opus

node_modules/.bin/detect-libc

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../detect-libc/bin/detect-libc.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../detect-libc/bin/detect-libc.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/detect-libc.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\detect-libc\bin\detect-libc.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/detect-libc.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../detect-libc/bin/detect-libc.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../detect-libc/bin/detect-libc.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/mkdirp

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../mkdirp/bin/cmd.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../mkdirp/bin/cmd.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/mkdirp.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\mkdirp\bin\cmd.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/mkdirp.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../mkdirp/bin/cmd.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../mkdirp/bin/cmd.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/needle

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../needle/bin/needle" "$@"
+  ret=$?
+else 
+  node  "$basedir/../needle/bin/needle" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/needle.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\needle\bin\needle" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/needle.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../needle/bin/needle" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../needle/bin/needle" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/node-pre-gyp

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../node-pre-gyp/bin/node-pre-gyp" "$@"
+  ret=$?
+else 
+  node  "$basedir/../node-pre-gyp/bin/node-pre-gyp" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/node-pre-gyp.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\node-pre-gyp\bin\node-pre-gyp" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/node-pre-gyp.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../node-pre-gyp/bin/node-pre-gyp" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../node-pre-gyp/bin/node-pre-gyp" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/nopt

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../nopt/bin/nopt.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../nopt/bin/nopt.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/nopt.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\nopt\bin\nopt.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/nopt.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/rc

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../rc/cli.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../rc/cli.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/rc.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\rc\cli.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/rc.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../rc/cli.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../rc/cli.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/rimraf

@@ -0,0 +1,15 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../rimraf/bin.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../rimraf/bin.js" "$@"
+  ret=$?
+fi
+exit $ret

node_modules/.bin/rimraf.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+"%_prog%"  "%dp0%\..\rimraf\bin.js" %*
+ENDLOCAL
+EXIT /b %errorlevel%
+:find_dp0
+SET dp0=%~dp0
+EXIT /b

node_modules/.bin/rimraf.ps1

@@ -0,0 +1,18 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  & "$basedir/node$exe"  "$basedir/../rimraf/bin.js" $args
+  $ret=$LASTEXITCODE
+} else {
+  & "node$exe"  "$basedir/../rimraf/bin.js" $args
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/@discordjs/opus/.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

node_modules/@discordjs/opus/.github/workflows/build.yml

@@ -0,0 +1,22 @@
+name: Build
+on: [push, pull_request]
+jobs:
+  build:
+    name: Build
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+        node: [12, 13]
+      fail-fast: true
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Node v${{ matrix.node }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+          
+      - name: Install dependencies
+        run: yarn install

node_modules/@discordjs/opus/.github/workflows/release.yml

@@ -0,0 +1,34 @@
+name: Prebuild
+on:
+  release:
+    types: [published]
+jobs:
+  build:
+    name: Prebuild
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+        node: [12, 13]
+      fail-fast: true
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Node v${{ matrix.node }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+          
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Package prebuild
+        run: yarn build
+
+      - name: Upload prebuild asset
+        uses: icrawl/action-artifact@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          path: 'build/stage/**/*.tar.gz'

node_modules/@discordjs/opus/LICENSE

@@ -1,6 +1,7 @@
-The MIT License (MIT)
+MIT License
 
-Copyright (c) 2016 Zeit, Inc.
+Copyright (c) 2020 iCrawl
+Copyright (c) 2013-2019 Mikko Rantanen
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

node_modules/@discordjs/opus/binding.gyp

@@ -0,0 +1,51 @@
+{
+	"targets": [
+		{
+			"target_name": "<(module_name)",
+			"product_dir": "<(module_path)",
+			"dependencies": [
+				"deps/binding.gyp:libopus",
+			],
+			"cflags!": [
+				"-fno-exceptions",
+			],
+			"cflags_cc!": [
+				"-fno-exceptions",
+			],
+			"cflags": [
+				"-pthread",
+				"-fno-strict-aliasing",
+				"-Wall",
+				"-Wno-unused-parameter",
+				"-Wno-missing-field-initializers",
+				"-Wextra",
+				"-pipe",
+				"-fno-ident",
+				"-fdata-sections",
+				"-ffunction-sections",
+				"-fPIC",
+			],
+			"defines": [
+				"LARGEFILE_SOURCE",
+				"_FILE_OFFSET_BITS=64",
+				"WEBRTC_TARGET_PC",
+				"WEBRTC_LINUX",
+				"WEBRTC_THREAD_RR",
+				"EXPAT_RELATIVE_PATH",
+				"GTEST_RELATIVE_PATH",
+				"JSONCPP_RELATIVE_PATH",
+				"WEBRTC_RELATIVE_PATH",
+				"POSIX,"
+				"__STDC_FORMAT_MACROS",
+				"DYNAMIC_ANNOTATIONS_ENABLED=0",
+				"NAPI_DISABLE_CPP_EXCEPTIONS",
+			],
+			"include_dirs": [
+				"<!@(node -p \"require('node-addon-api').include\")"
+			],
+			"sources": [
+				"src/node-opus.cc",
+			],
+		},
+	],
+}

node_modules/@discordjs/opus/deps/binding.gyp

@@ -0,0 +1,224 @@
+{
+	"variables": {
+		"target_arch%": "x64"
+	},
+	"target_defaults": {
+		"default_configuration": "Debug",
+		"configuration": {
+			"Debug": {
+				"defines": [ "DEBUG", "_DEBUG" ],
+				"msvs_settings": {
+					"VSSLCompilerTool": {
+						"RuntimeLibrary": 1,
+					},
+				},
+			},
+			"Release": {
+				"defines": [ "NODEBUG" ],
+				"msvs_settings": {
+					"VSSLCompilerTool": {
+						"RuntimeLibrary": 0,
+					},
+				},
+			},
+		},
+		"msvs_settings": {
+			"VCLinkerTool": {
+				"GenerateDebugInformation": "true",
+			},
+		},
+	},
+	"targets": [
+		{
+			"target_name": "libopus",
+			"type": "static_library",
+			"sources": [
+				"opus/src/opus_multistream.c",
+				"opus/src/opus_projection_encoder.c",
+				"opus/src/analysis.c",
+				"opus/src/mlp_data.c",
+				"opus/src/opus_multistream_encoder.c",
+				"opus/src/opus_projection_decoder.c",
+				"opus/src/mapping_matrix.c",
+				"opus/src/opus_compare.c",
+				"opus/src/mlp.c",
+				"opus/src/opus.c",
+				"opus/src/opus_multistream_decoder.c",
+				"opus/src/opus_decoder.c",
+				"opus/src/repacketizer.c",
+				"opus/src/opus_encoder.c",
+				"opus/silk/decode_frame.c",
+				"opus/silk/float/inner_product_FLP.c",
+				"opus/silk/float/scale_vector_FLP.c",
+				"opus/silk/float/find_pred_coefs_FLP.c",
+				"opus/silk/float/schur_FLP.c",
+				"opus/silk/float/warped_autocorrelation_FLP.c",
+				"opus/silk/float/burg_modified_FLP.c",
+				"opus/silk/float/find_LPC_FLP.c",
+				"opus/silk/float/LPC_inv_pred_gain_FLP.c",
+				"opus/silk/float/scale_copy_vector_FLP.c",
+				"opus/silk/float/noise_shape_analysis_FLP.c",
+				"opus/silk/float/pitch_analysis_core_FLP.c",
+				"opus/silk/float/bwexpander_FLP.c",
+				"opus/silk/float/LTP_analysis_filter_FLP.c",
+				"opus/silk/float/LTP_scale_ctrl_FLP.c",
+				"opus/silk/float/corrMatrix_FLP.c",
+				"opus/silk/float/encode_frame_FLP.c",
+				"opus/silk/float/sort_FLP.c",
+				"opus/silk/float/find_pitch_lags_FLP.c",
+				"opus/silk/float/residual_energy_FLP.c",
+				"opus/silk/float/LPC_analysis_filter_FLP.c",
+				"opus/silk/float/autocorrelation_FLP.c",
+				"opus/silk/float/k2a_FLP.c",
+				"opus/silk/float/regularize_correlations_FLP.c",
+				"opus/silk/float/find_LTP_FLP.c",
+				"opus/silk/float/energy_FLP.c",
+				"opus/silk/float/apply_sine_window_FLP.c",
+				"opus/silk/float/wrappers_FLP.c",
+				"opus/silk/float/process_gains_FLP.c",
+				"opus/silk/stereo_quant_pred.c",
+				"opus/silk/LPC_inv_pred_gain.c",
+				"opus/silk/process_NLSFs.c",
+				"opus/silk/NSQ.c",
+				"opus/silk/check_control_input.c",
+				"opus/silk/NLSF_del_dec_quant.c",
+				"opus/silk/LPC_analysis_filter.c",
+				"opus/silk/dec_API.c",
+				"opus/silk/resampler.c",
+				"opus/silk/sort.c",
+				"opus/silk/VAD.c",
+				"opus/silk/resampler_private_AR2.c",
+				"opus/silk/LPC_fit.c",
+				"opus/silk/control_SNR.c",
+				"opus/silk/decode_parameters.c",
+				"opus/silk/pitch_est_tables.c",
+				"opus/silk/fixed/warped_autocorrelation_FIX.c",
+				"opus/silk/fixed/apply_sine_window_FIX.c",
+				"opus/silk/fixed/residual_energy16_FIX.c",
+				"opus/silk/fixed/schur64_FIX.c",
+				"opus/silk/fixed/residual_energy_FIX.c",
+				"opus/silk/fixed/noise_shape_analysis_FIX.c",
+				"opus/silk/fixed/encode_frame_FIX.c",
+				"opus/silk/fixed/schur_FIX.c",
+				"opus/silk/fixed/autocorr_FIX.c",
+				"opus/silk/fixed/burg_modified_FIX.c",
+				"opus/silk/fixed/pitch_analysis_core_FIX.c",
+				"opus/silk/fixed/find_LTP_FIX.c",
+				"opus/silk/fixed/find_LPC_FIX.c",
+				"opus/silk/fixed/corrMatrix_FIX.c",
+				"opus/silk/fixed/k2a_FIX.c",
+				"opus/silk/fixed/LTP_scale_ctrl_FIX.c",
+				"opus/silk/fixed/process_gains_FIX.c",
+				"opus/silk/fixed/k2a_Q16_FIX.c",
+				"opus/silk/fixed/regularize_correlations_FIX.c",
+				"opus/silk/fixed/LTP_analysis_filter_FIX.c",
+				"opus/silk/fixed/vector_ops_FIX.c",
+				"opus/silk/fixed/find_pitch_lags_FIX.c",
+				"opus/silk/fixed/find_pred_coefs_FIX.c",
+				"opus/silk/control_audio_bandwidth.c",
+				"opus/silk/decoder_set_fs.c",
+				"opus/silk/NLSF_unpack.c",
+				"opus/silk/bwexpander.c",
+				"opus/silk/resampler_rom.c",
+				"opus/silk/shell_coder.c",
+				"opus/silk/decode_pulses.c",
+				"opus/silk/bwexpander_32.c",
+				"opus/silk/decode_core.c",
+				"opus/silk/PLC.c",
+				"opus/silk/tables_NLSF_CB_WB.c",
+				"opus/silk/table_LSF_cos.c",
+				"opus/silk/tables_pulses_per_block.c",
+				"opus/silk/tables_gain.c",
+				"opus/silk/inner_prod_aligned.c",
+				"opus/silk/resampler_down2_3.c",
+				"opus/silk/NSQ_del_dec.c",
+				"opus/silk/decode_pitch.c",
+				"opus/silk/NLSF_VQ_weights_laroia.c",
+				"opus/silk/interpolate.c",
+				"opus/silk/debug.c",
+				"opus/silk/tables_other.c",
+				"opus/silk/LP_variable_cutoff.c",
+				"opus/silk/NLSF_decode.c",
+				"opus/silk/encode_pulses.c",
+				"opus/silk/control_codec.c",
+				"opus/silk/stereo_LR_to_MS.c",
+				"opus/silk/HP_variable_cutoff.c",
+				"opus/silk/encode_indices.c",
+				"opus/silk/init_decoder.c",
+				"opus/silk/stereo_encode_pred.c",
+				"opus/silk/NLSF_VQ.c",
+				"opus/silk/init_encoder.c",
+				"opus/silk/resampler_private_IIR_FIR.c",
+				"opus/silk/resampler_private_up2_HQ.c",
+				"opus/silk/sigm_Q15.c",
+				"opus/silk/sum_sqr_shift.c",
+				"opus/silk/tables_LTP.c",
+				"opus/silk/resampler_down2.c",
+				"opus/silk/code_signs.c",
+				"opus/silk/tables_NLSF_CB_NB_MB.c",
+				"opus/silk/gain_quant.c",
+				"opus/silk/tables_pitch_lag.c",
+				"opus/silk/NLSF_stabilize.c",
+				"opus/silk/stereo_find_predictor.c",
+				"opus/silk/A2NLSF.c",
+				"opus/silk/NLSF2A.c",
+				"opus/silk/VQ_WMat_EC.c",
+				"opus/silk/NLSF_encode.c",
+				"opus/silk/log2lin.c",
+				"opus/silk/stereo_decode_pred.c",
+				"opus/silk/lin2log.c",
+				"opus/silk/CNG.c",
+				"opus/silk/enc_API.c",
+				"opus/silk/biquad_alt.c",
+				"opus/silk/quant_LTP_gains.c",
+				"opus/silk/resampler_private_down_FIR.c",
+				"opus/silk/ana_filt_bank_1.c",
+				"opus/silk/stereo_MS_to_LR.c",
+				"opus/silk/decode_indices.c",
+				"opus/celt/rate.c",
+				"opus/celt/entdec.c",
+				"opus/celt/modes.c",
+				"opus/celt/celt_lpc.c",
+				"opus/celt/laplace.c",
+				"opus/celt/cwrs.c",
+				"opus/celt/celt.c",
+				"opus/celt/entcode.c",
+				"opus/celt/celt_decoder.c",
+				"opus/celt/celt_encoder.c",
+				"opus/celt/mdct.c",
+				"opus/celt/quant_bands.c",
+				"opus/celt/vq.c",
+				"opus/celt/bands.c",
+				"opus/celt/kiss_fft.c",
+				"opus/celt/entenc.c",
+				"opus/celt/mathops.c",
+				"opus/celt/pitch.c",
+			],
+			"cflags": [
+				"-fvisibility=hidden",
+				"-W",
+				"-Wstrict-prototypes",
+				"-Wall",
+				"-Wextra",
+				"-Wcast-align",
+				"-Wnested-externs",
+				"-Wshadow",
+				"-Wno-parentheses",
+				"-Wno-unused-parameter",
+				"-Wno-sign-compare",
+				"-Wno-maybe-uninitialized",
+			],
+			"include_dirs": [
+				"config/opus/<(OS)/<(target_arch)",
+				"opus/include",
+				"opus/celt",
+				"opus/silk",
+				"opus/silk/float",
+			],
+			"defines": [
+				"PIC",
+				"HAVE_CONFIG_H",
+			],
+		},
+	],
+}

node_modules/@discordjs/opus/deps/config/opus/android/arm/config.h

@@ -152,7 +152,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.2"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -161,7 +161,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.2"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/freebsd/x64/config.h

@@ -153,7 +153,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.2"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -162,7 +162,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.2"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/linux/arm/config.h

@@ -132,7 +132,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -141,7 +141,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/linux/arm64/config.h

@@ -152,7 +152,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.2"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -161,7 +161,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.2"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/linux/ia32/config.h

@@ -128,7 +128,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus unknown"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -137,7 +137,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "unknown"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/linux/x64/config.h

@@ -129,7 +129,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -138,7 +138,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/mac/x64/config.h

@@ -128,7 +128,7 @@
 #define PACKAGE_NAME "opus"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "opus 1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_STRING "opus 1.3.1"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "opus"
@@ -137,7 +137,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.1-beta-34-g5b20cb0"
+#define PACKAGE_VERSION "1.3.1"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1

node_modules/@discordjs/opus/deps/config/opus/win/x64/config.h

@@ -28,8 +28,6 @@ POSSIBILITY OF SUCH DAMAGE.
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define inline __inline
-
 #define USE_ALLOCA            1
 
 /* Comment out the next line for floating-point code */
@@ -37,16 +35,30 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #define OPUS_BUILD            1
 
-/* Get rid of the CELT VS compile warnings */
-#if 1
-#pragma warning(disable : 4996)/* This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. */
+#if defined(_M_IX86) || defined(_M_X64)
+/* Can always compile SSE intrinsics (no special compiler flags necessary) */
+/* #define OPUS_X86_MAY_HAVE_SSE
+#define OPUS_X86_MAY_HAVE_SSE2
+#define OPUS_X86_MAY_HAVE_SSE4_1 */
+
+/* Presume SSE functions, if compiled to use SSE/SSE2/AVX (note that AMD64 implies SSE2, and AVX
+   implies SSE4.1) */
+#if defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP >= 1)) || defined(__AVX__)
+#define OPUS_X86_PRESUME_SSE 1
+#endif
+#if defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP >= 2)) || defined(__AVX__)
+#define OPUS_X86_PRESUME_SSE2 1
+#endif
+#if defined(__AVX__)
+#define OPUS_X86_PRESUME_SSE4_1 1
 #endif
 
-/* Enable SSE functions, if compiled with SSE/SSE2 (note that AMD64 implies SSE2) */
-#if defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP >= 1))
-#define __SSE__               1
+#if !defined(OPUS_X86_PRESUME_SSE4_1) || !defined(OPUS_X86_PRESUME_SSE2) || !defined(OPUS_X86_PRESUME_SSE)
+#define OPUS_HAVE_RTCD 1
 #endif
 
-#include "version.h"
+#endif
+
+#define PACKAGE_VERSION "1.3.1"
 
 #endif /* CONFIG_H */

node_modules/@discordjs/opus/deps/opus/CMakeLists.txt

@@ -0,0 +1,411 @@
+cmake_minimum_required(VERSION 3.1)
+
+include(opus_functions.cmake)
+
+get_library_version(OPUS_LIBRARY_VERSION OPUS_LIBRARY_VERSION_MAJOR)
+message(STATUS "Opus library version: ${OPUS_LIBRARY_VERSION}")
+
+get_package_version(PACKAGE_VERSION)
+message(STATUS "Opus package version: ${PACKAGE_VERSION}")
+
+string(REGEX
+       REPLACE "^([0-9]+.[0-9]+\\.?([0-9]+)?).*"
+               "\\1"
+               PROJECT_VERSION
+               ${PACKAGE_VERSION})
+message(STATUS "Opus project version: ${PROJECT_VERSION}")
+
+project(Opus LANGUAGES C VERSION ${PROJECT_VERSION})
+include(opus_buildtype.cmake)
+
+option(OPUS_STACK_PROTECTOR "Use stack protection" ON)
+option(OPUS_USE_ALLOCA "Use alloca for stack arrays (on non-C99 compilers)" OFF)
+option(OPUS_CUSTOM_MODES "Enable non-Opus modes, e.g. 44.1 kHz & 2^n frames"
+       OFF)
+option(OPUS_BUILD_PROGRAMS "Build programs" OFF)
+option(OPUS_FIXED_POINT
+       "Compile as fixed-point (for machines without a fast enough FPU)" OFF)
+option(OPUS_ENABLE_FLOAT_API
+       "Compile with the floating point API (for machines with float library"
+       ON)
+option(OPUS_INSTALL_PKG_CONFIG_MODULE "Install PkgConfig module" ON)
+option(OPUS_INSTALL_CMAKE_CONFIG_MODULE "Install CMake package config module"
+       ON)
+
+include(opus_config.cmake)
+include(opus_sources.cmake)
+include(GNUInstallDirs)
+include(CMakeDependentOption)
+include(FeatureSummary)
+
+if(OPUS_STACK_PROTECTOR)
+  if(NOT MSVC) # GC on by default on MSVC
+    check_and_set_flag(STACK_PROTECTION_STRONG -fstack-protector-strong)
+  endif()
+else()
+  if(MSVC)
+    check_and_set_flag(BUFFER_SECURITY_CHECK /GS-)
+  endif()
+endif()
+
+if(OPUS_CPU_X86 OR OPUS_CPU_X64)
+  cmake_dependent_option(OPUS_X86_MAY_HAVE_SSE
+                         "Does runtime check for SSE1 support"
+                         ON
+                         "SSE1_SUPPORTED"
+                         OFF)
+  cmake_dependent_option(OPUS_X86_MAY_HAVE_SSE2
+                         "Does runtime check for SSE2 support"
+                         ON
+                         "SSE2_SUPPORTED"
+                         OFF)
+  cmake_dependent_option(OPUS_X86_MAY_HAVE_SSE4_1
+                         "Does runtime check for SSE4.1 support"
+                         ON
+                         "SSE4_1_SUPPORTED"
+                         OFF)
+  cmake_dependent_option(OPUS_X86_MAY_HAVE_AVX
+                         "Does runtime check for AVX support"
+                         ON
+                         "AVX_SUPPORTED"
+                         OFF)
+
+  if(OPUS_CPU_X64) # Assume 64 bit has SSE2 support
+    cmake_dependent_option(OPUS_X86_PRESUME_SSE
+                           "Assume target CPU has SSE1 support"
+                           ON
+                           "OPUS_X86_MAY_HAVE_SSE"
+                           OFF)
+    cmake_dependent_option(OPUS_X86_PRESUME_SSE2
+                           "Assume target CPU has SSE2 support"
+                           ON
+                           "OPUS_X86_MAY_HAVE_SSE2"
+                           OFF)
+  else()
+    cmake_dependent_option(OPUS_X86_PRESUME_SSE
+                           "Assume target CPU has SSE1 support"
+                           OFF
+                           "OPUS_X86_MAY_HAVE_SSE"
+                           OFF)
+    cmake_dependent_option(OPUS_X86_PRESUME_SSE2
+                           "Assume target CPU has SSE2 support"
+                           OFF
+                           "OPUS_X86_MAY_HAVE_SSE2"
+                           OFF)
+  endif()
+  cmake_dependent_option(OPUS_X86_PRESUME_SSE4_1
+                         "Assume target CPU has SSE4.1 support"
+                         OFF
+                         "OPUS_X86_MAY_HAVE_SSE4_1"
+                         OFF)
+  cmake_dependent_option(OPUS_X86_PRESUME_AVX
+                         "Assume target CPU has AVX support"
+                         OFF
+                         "OPUS_X86_MAY_HAVE_AVX"
+                         OFF)
+endif()
+
+set_package_properties(Git
+                       PROPERTIES
+                       TYPE
+                       REQUIRED
+                       DESCRIPTION
+                       "fast, scalable, distributed revision control system"
+                       URL
+                       "https://git-scm.com/"
+                       PURPOSE
+                       "required to set up package version")
+
+add_feature_info(STACK_PROTECTOR OPUS_STACK_PROTECTOR "Use stack protection")
+add_feature_info(USE_ALLOCA OPUS_USE_ALLOCA
+                 "Use alloca for stack arrays (on non-C99 compilers)")
+add_feature_info(CUSTOM_MODES OPUS_CUSTOM_MODES
+                 "Enable non-Opus modes, e.g. 44.1 kHz & 2^n frames")
+add_feature_info(BUILD_PROGRAMS OPUS_BUILD_PROGRAMS "Build programs")
+add_feature_info(
+  FIXED_POINT OPUS_FIXED_POINT
+  "compile as fixed-point (for machines without a fast enough FPU)")
+add_feature_info(
+  FLOAT_API OPUS_ENABLE_FLOAT_API
+  "compile with the floating point API (for machines with float library)")
+
+add_feature_info(INSTALL_PKG_CONFIG_MODULE OPUS_INSTALL_PKG_CONFIG_MODULE
+                 "install PkgConfig module")
+add_feature_info(INSTALL_CMAKE_CONFIG_MODULE OPUS_INSTALL_CMAKE_CONFIG_MODULE
+                 "install CMake package config module")
+
+if(OPUS_CPU_X86 OR OPUS_CPU_X64)
+  add_feature_info(X86_MAY_HAVE_SSE OPUS_X86_MAY_HAVE_SSE
+                   "does runtime check for SSE1 support")
+  add_feature_info(X86_MAY_HAVE_SSE2 OPUS_X86_MAY_HAVE_SSE2
+                   "does runtime check for SSE2 support")
+  add_feature_info(X86_MAY_HAVE_SSE4_1 OPUS_X86_MAY_HAVE_SSE4_1
+                   "does runtime check for SSE4_1 support")
+  add_feature_info(X86_MAY_HAVE_AVX OPUS_X86_MAY_HAVE_AVX
+                   "does runtime check for AVX support")
+  add_feature_info(X86_PRESUME_SSE OPUS_X86_PRESUME_SSE
+                   "assume target CPU has SSE1 support")
+  add_feature_info(X86_PRESUME_SSE2 OPUS_X86_PRESUME_SSE2
+                   "assume target CPU has SSE2 support")
+  add_feature_info(X86_PRESUME_SSE4_1 OPUS_X86_PRESUME_SSE4_1
+                   "assume target CPU has SSE4_1 support")
+  add_feature_info(X86_PRESUME_AVX OPUS_X86_PRESUME_AVX
+                   "assume target CPU has AVX support")
+endif()
+
+feature_summary(WHAT ALL)
+
+add_library(opus ${opus_sources} ${opus_sources_float})
+
+set(Opus_PUBLIC_HEADER
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus_custom.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus_defines.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus_multistream.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus_projection.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/opus_types.h)
+
+set_target_properties(opus
+                      PROPERTIES SOVERSION
+                                 ${OPUS_LIBRARY_VERSION_MAJOR}
+                                 VERSION
+                                 ${OPUS_LIBRARY_VERSION}
+                                 PUBLIC_HEADER
+                                 "${Opus_PUBLIC_HEADER}")
+
+target_include_directories(
+  opus
+  PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
+          ${CMAKE_CURRENT_SOURCE_DIR}
+          celt
+          silk)
+
+target_link_libraries(opus PRIVATE ${OPUS_REQUIRED_LIBRARIES})
+target_compile_definitions(opus PRIVATE OPUS_BUILD ENABLE_HARDENING)
+
+if(NOT MSVC)
+  target_compile_definitions(opus PRIVATE FORTIFY_SOURCE=2)
+endif()
+
+# It is strongly recommended to uncomment one of these VAR_ARRAYS: Use C99
+# variable-length arrays for stack allocation USE_ALLOCA: Use alloca() for stack
+# allocation If none is defined, then the fallback is a non-threadsafe global
+# array
+if(OPUS_USE_ALLOCA OR MSVC)
+  target_compile_definitions(opus PRIVATE USE_ALLOCA)
+else()
+  target_compile_definitions(opus PRIVATE VAR_ARRAYS)
+endif()
+
+if(OPUS_CUSTOM_MODES)
+  target_compile_definitions(opus PRIVATE CUSTOM_MODES)
+endif()
+
+if(BUILD_SHARED_LIBS)
+  if(WIN32)
+    target_compile_definitions(opus PRIVATE DLL_EXPORT)
+  else()
+    include(CheckCCompilerFlag)
+    check_c_compiler_flag(-fvisibility=hidden COMPILER_HAS_HIDDEN_VISIBILITY)
+    if(COMPILER_HAS_HIDDEN_VISIBILITY)
+      set_target_properties(opus PROPERTIES C_VISIBILITY_PRESET hidden)
+    endif()
+  endif()
+endif()
+
+add_sources_group(opus silk ${silk_sources})
+add_sources_group(opus celt ${celt_sources})
+
+if(OPUS_FIXED_POINT)
+  add_sources_group(opus silk ${silk_sources_fixed})
+  target_include_directories(opus PRIVATE silk/fixed)
+  target_compile_definitions(opus PRIVATE FIXED_POINT=1)
+else()
+  add_sources_group(opus silk ${silk_sources_float})
+  target_include_directories(opus PRIVATE silk/float)
+endif()
+
+if(NOT OPUS_ENABLE_FLOAT_API)
+  target_compile_definitions(opus PRIVATE DISABLE_FLOAT_API)
+endif()
+
+if(OPUS_X86_MAY_HAVE_SSE
+   OR OPUS_X86_MAY_HAVE_SSE2
+   OR OPUS_X86_MAY_HAVE_SSE4_1
+   OR OPUS_X86_MAY_HAVE_AVX)
+  target_compile_definitions(opus PRIVATE OPUS_HAVE_RTCD)
+endif()
+
+if(OPUS_X86_MAY_HAVE_SSE)
+  add_sources_group(opus celt ${celt_sources_sse})
+  target_compile_definitions(opus PRIVATE OPUS_X86_MAY_HAVE_SSE)
+endif()
+if(OPUS_X86_PRESUME_SSE)
+  target_compile_definitions(opus PRIVATE OPUS_X86_PRESUME_SSE)
+endif()
+
+if(OPUS_X86_MAY_HAVE_SSE2)
+  add_sources_group(opus celt ${celt_sources_sse2})
+  target_compile_definitions(opus PRIVATE OPUS_X86_MAY_HAVE_SSE2)
+endif()
+if(OPUS_X86_PRESUME_SSE2)
+  target_compile_definitions(opus PRIVATE OPUS_X86_PRESUME_SSE2)
+endif()
+
+if(OPUS_X86_MAY_HAVE_SSE)
+  add_sources_group(opus celt ${celt_sources_sse4_1})
+  add_sources_group(opus silk ${silk_sources_sse4_1})
+  if(OPUS_FIXED_POINT)
+    add_sources_group(opus silk ${silk_sources_fixed_sse4_1})
+  endif()
+  target_compile_definitions(opus PRIVATE OPUS_X86_MAY_HAVE_SSE4_1)
+endif()
+if(OPUS_X86_PRESUME_SSE4_1)
+  target_compile_definitions(opus PRIVATE OPUS_X86_PRESUME_SSE4_1)
+endif()
+
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "(armv7-a)")
+  add_sources_group(opus celt ${celt_sources_arm})
+endif()
+
+if(COMPILER_SUPPORT_NEON AND OPUS_USE_NEON)
+
+  if(OPUS_MAY_HAVE_NEON)
+    if(RUNTIME_CPU_CAPABILITY_DETECTION)
+      message(STATUS "OPUS_MAY_HAVE_NEON enabling runtime detection")
+      target_compile_definitions(opus PRIVATE OPUS_HAVE_RTCD)
+    else()
+      message(ERROR "Runtime cpu capability detection needed for MAY_HAVE_NEON")
+    endif()
+    # Do runtime check for NEON
+    target_compile_definitions(opus
+                               PRIVATE
+                               OPUS_ARM_MAY_HAVE_NEON
+                               OPUS_ARM_MAY_HAVE_NEON_INTR)
+  endif()
+
+  add_sources_group(opus celt ${celt_sources_arm_neon_intr})
+  add_sources_group(opus silk ${silk_sources_arm_neon_intr})
+
+  # silk arm neon depends on main_Fix.h
+  target_include_directories(opus PRIVATE silk/fixed)
+
+  if(OPUS_FIXED_POINT)
+    add_sources_group(opus silk ${silk_sources_fixed_arm_neon_intr})
+  endif()
+
+  if(OPUS_PRESUME_NEON)
+    target_compile_definitions(opus
+                               PRIVATE
+                               OPUS_ARM_PRESUME_NEON
+                               OPUS_ARM_PRESUME_NEON_INTR)
+  endif()
+endif()
+
+install(TARGETS opus
+        EXPORT OpusTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/opus)
+
+if(OPUS_INSTALL_PKG_CONFIG_MODULE)
+  set(prefix ${CMAKE_INSTALL_PREFIX})
+  set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+  set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+  set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+  set(VERSION ${OPUS_LIBRARY_VERSION})
+  set(VERSION ${OPUS_LIBRARY_VERSION})
+  if(HAVE_LIBM)
+    set(LIBM "-lm")
+  endif()
+  configure_file(opus.pc.in opus.pc)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/opus.pc
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+endif()
+
+if(OPUS_INSTALL_CMAKE_CONFIG_MODULE)
+  set(CMAKE_INSTALL_PACKAGEDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+  install(EXPORT OpusTargets
+          NAMESPACE Opus::
+          DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+
+  include(CMakePackageConfigHelpers)
+
+  set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+  configure_package_config_file(OpusConfig.cmake.in
+                                OpusConfig.cmake
+                                INSTALL_DESTINATION
+                                ${CMAKE_INSTALL_PACKAGEDIR}
+                                PATH_VARS
+                                INCLUDE_INSTALL_DIR
+                                INSTALL_PREFIX
+                                ${CMAKE_INSTALL_PREFIX})
+  write_basic_package_version_file(OpusConfigVersion.cmake
+                                   VERSION ${PROJECT_VERSION}
+                                   COMPATIBILITY SameMajorVersion)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/OpusConfig.cmake
+                ${CMAKE_CURRENT_BINARY_DIR}/OpusConfigVersion.cmake
+          DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+endif()
+
+if(OPUS_BUILD_PROGRAMS)
+  # demo
+  if(OPUS_CUSTOM_MODES)
+    add_executable(opus_custom_demo ${opus_custom_demo_sources})
+    target_include_directories(opus_custom_demo
+                               PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+    target_link_libraries(opus_custom_demo PRIVATE opus)
+  endif()
+
+  add_executable(opus_demo ${opus_demo_sources})
+  target_include_directories(opus_demo PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+  target_include_directories(opus_demo PRIVATE silk) # debug.h
+  target_include_directories(opus_demo PRIVATE celt) # arch.h
+  target_link_libraries(opus_demo PRIVATE opus)
+
+  # compare
+  add_executable(opus_compare ${opus_compare_sources})
+  target_include_directories(opus_compare PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+  target_link_libraries(opus_compare PRIVATE opus)
+endif()
+
+if(BUILD_TESTING)
+  enable_testing()
+
+  # tests
+  add_executable(test_opus_decode ${test_opus_decode_sources})
+  target_include_directories(test_opus_decode
+                             PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+  target_link_libraries(test_opus_decode PRIVATE opus)
+  if(OPUS_FIXED_POINT)
+    target_compile_definitions(test_opus_decode PRIVATE DISABLE_FLOAT_API)
+  endif()
+  add_test(test_opus_decode test_opus_decode)
+
+  add_executable(test_opus_padding ${test_opus_padding_sources})
+  target_include_directories(test_opus_padding
+                             PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+  target_link_libraries(test_opus_padding PRIVATE opus)
+  add_test(test_opus_padding test_opus_padding)
+
+  if(NOT BUILD_SHARED_LIBS)
+    # disable tests that depends on private API when building shared lib
+    add_executable(test_opus_api ${test_opus_api_sources})
+    target_include_directories(test_opus_api
+                               PRIVATE ${CMAKE_CURRENT_BINARY_DIR} celt)
+    target_link_libraries(test_opus_api PRIVATE opus)
+    if(OPUS_FIXED_POINT)
+      target_compile_definitions(test_opus_api PRIVATE DISABLE_FLOAT_API)
+    endif()
+    add_test(test_opus_api test_opus_api)
+
+    add_executable(test_opus_encode ${test_opus_encode_sources})
+    target_include_directories(test_opus_encode
+                               PRIVATE ${CMAKE_CURRENT_BINARY_DIR} celt)
+    target_link_libraries(test_opus_encode PRIVATE opus)
+    add_test(test_opus_encode test_opus_encode)
+  endif()
+endif()

node_modules/@discordjs/opus/deps/opus/INSTALL

@@ -0,0 +1,368 @@
+Installation Instructions
+*************************
+
+   Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software
+Foundation, Inc.
+
+   Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.  This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+   Briefly, the shell command './configure && make && make install'
+should configure, build, and install this package.  The following
+more-detailed instructions are generic; see the 'README' file for
+instructions specific to this package.  Some packages provide this
+'INSTALL' file but do not implement all of the features documented
+below.  The lack of an optional feature in a given package is not
+necessarily a bug.  More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+   The 'configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a 'Makefile' in each directory of the package.
+It may also create one or more '.h' files containing system-dependent
+definitions.  Finally, it creates a shell script 'config.status' that
+you can run in the future to recreate the current configuration, and a
+file 'config.log' containing compiler output (useful mainly for
+debugging 'configure').
+
+   It can also use an optional file (typically called 'config.cache' and
+enabled with '--cache-file=config.cache' or simply '-C') that saves the
+results of its tests to speed up reconfiguring.  Caching is disabled by
+default to prevent problems with accidental use of stale cache files.
+
+   If you need to do unusual things to compile the package, please try
+to figure out how 'configure' could check whether to do them, and mail
+diffs or instructions to the address given in the 'README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point 'config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file 'configure.ac' (or 'configure.in') is used to create
+'configure' by a program called 'autoconf'.  You need 'configure.ac' if
+you want to change it or regenerate 'configure' using a newer version of
+'autoconf'.
+
+   The simplest way to compile this package is:
+
+  1. 'cd' to the directory containing the package's source code and type
+     './configure' to configure the package for your system.
+
+     Running 'configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
+
+  2. Type 'make' to compile the package.
+
+  3. Optionally, type 'make check' to run any self-tests that come with
+     the package, generally using the just-built uninstalled binaries.
+
+  4. Type 'make install' to install the programs and any data files and
+     documentation.  When installing into a prefix owned by root, it is
+     recommended that the package be configured and built as a regular
+     user, and only the 'make install' phase executed with root
+     privileges.
+
+  5. Optionally, type 'make installcheck' to repeat any self-tests, but
+     this time using the binaries in their final installed location.
+     This target does not install anything.  Running this target as a
+     regular user, particularly if the prior 'make install' required
+     root privileges, verifies that the installation completed
+     correctly.
+
+  6. You can remove the program binaries and object files from the
+     source code directory by typing 'make clean'.  To also remove the
+     files that 'configure' created (so you can compile the package for
+     a different kind of computer), type 'make distclean'.  There is
+     also a 'make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+  7. Often, you can also type 'make uninstall' to remove the installed
+     files again.  In practice, not all packages have tested that
+     uninstallation works correctly, even though it is required by the
+     GNU Coding Standards.
+
+  8. Some packages, particularly those that use Automake, provide 'make
+     distcheck', which can by used by developers to test that all other
+     targets like 'make install' and 'make uninstall' work correctly.
+     This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the 'configure' script does not know about.  Run './configure --help'
+for details on some of the pertinent environment variables.
+
+   You can give 'configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here is
+an example:
+
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you can use GNU 'make'.  'cd' to the
+directory where you want the object files and executables to go and run
+the 'configure' script.  'configure' automatically checks for the source
+code in the directory that 'configure' is in and in '..'.  This is known
+as a "VPATH" build.
+
+   With a non-GNU 'make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use 'make distclean' before
+reconfiguring for another architecture.
+
+   On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple '-arch' options to the
+compiler but only a single '-arch' option to the preprocessor.  Like
+this:
+
+     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CPP="gcc -E" CXXCPP="g++ -E"
+
+   This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the 'lipo' tool if you have problems.
+
+Installation Names
+==================
+
+   By default, 'make install' installs the package's commands under
+'/usr/local/bin', include files under '/usr/local/include', etc.  You
+can specify an installation prefix other than '/usr/local' by giving
+'configure' the option '--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+pass the option '--exec-prefix=PREFIX' to 'configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like '--bindir=DIR' to specify different values for particular
+kinds of files.  Run 'configure --help' for a list of the directories
+you can set and what kinds of files go in them.  In general, the default
+for these options is expressed in terms of '${prefix}', so that
+specifying just '--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+   The most portable way to affect installation locations is to pass the
+correct locations to 'configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+'make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+   The first method involves providing an override variable for each
+affected directory.  For example, 'make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+'${prefix}'.  Any directories that were specified during 'configure',
+but not in terms of '${prefix}', must each be overridden at install time
+for the entire installation to be relocated.  The approach of makefile
+variable overrides for each directory variable is required by the GNU
+Coding Standards, and ideally causes no recompilation.  However, some
+platforms have known limitations with the semantics of shared libraries
+that end up requiring recompilation when using this method, particularly
+noticeable in packages that use GNU Libtool.
+
+   The second method involves providing the 'DESTDIR' variable.  For
+example, 'make install DESTDIR=/alternate/directory' will prepend
+'/alternate/directory' before all installation names.  The approach of
+'DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters.  On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of '${prefix}'
+at 'configure' time.
+
+Optional Features
+=================
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving 'configure' the
+option '--program-prefix=PREFIX' or '--program-suffix=SUFFIX'.
+
+   Some packages pay attention to '--enable-FEATURE' options to
+'configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to '--with-PACKAGE' options, where PACKAGE
+is something like 'gnu-as' or 'x' (for the X Window System).  The
+'README' should mention any '--enable-' and '--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, 'configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the 'configure' options '--x-includes=DIR' and
+'--x-libraries=DIR' to specify their locations.
+
+   Some packages offer the ability to configure how verbose the
+execution of 'make' will be.  For these packages, running './configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with 'make V=1'; while running './configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with 'make V=0'.
+
+Particular systems
+==================
+
+   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU CC
+is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+   HP-UX 'make' updates targets which have the same time stamps as their
+prerequisites, which makes it generally unusable when shipped generated
+files such as 'configure' are involved.  Use GNU 'make' instead.
+
+   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its '<wchar.h>' header file.  The option '-nodtk' can be used as a
+workaround.  If GNU CC is not installed, it is therefore recommended to
+try
+
+     ./configure CC="cc"
+
+and if that doesn't work, try
+
+     ./configure CC="cc -nodtk"
+
+   On Solaris, don't put '/usr/ucb' early in your 'PATH'.  This
+directory contains several dysfunctional programs; working variants of
+these programs are available in '/usr/bin'.  So, if you need '/usr/ucb'
+in your 'PATH', put it _after_ '/usr/bin'.
+
+   On Haiku, software installed for all users goes in '/boot/common',
+not '/usr/local'.  It is recommended to use the following options:
+
+     ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+   There may be some features 'configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on.  Usually, assuming the package is built to be run on the
+_same_ architectures, 'configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+'--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as 'sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS
+     KERNEL-OS
+
+   See the file 'config.sub' for the possible values of each field.  If
+'config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the option '--target=TYPE' to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with '--host=TYPE'.
+
+Sharing Defaults
+================
+
+   If you want to set default values for 'configure' scripts to share,
+you can create a site shell script called 'config.site' that gives
+default values for variables like 'CC', 'cache_file', and 'prefix'.
+'configure' looks for 'PREFIX/share/config.site' if it exists, then
+'PREFIX/etc/config.site' if it exists.  Or, you can set the
+'CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all 'configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+   Variables not defined in a site shell script can be set in the
+environment passed to 'configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the 'configure' command line, using 'VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+causes the specified 'gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for 'CONFIG_SHELL' due to an
+Autoconf limitation.  Until the limitation is lifted, you can use this
+workaround:
+
+     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+'configure' Invocation
+======================
+
+   'configure' recognizes the following options to control how it
+operates.
+
+'--help'
+'-h'
+     Print a summary of all of the options to 'configure', and exit.
+
+'--help=short'
+'--help=recursive'
+     Print a summary of the options unique to this package's
+     'configure', and exit.  The 'short' variant lists options used only
+     in the top level, while the 'recursive' variant lists options also
+     present in any nested packages.
+
+'--version'
+'-V'
+     Print the version of Autoconf used to generate the 'configure'
+     script, and exit.
+
+'--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally 'config.cache'.  FILE defaults to '/dev/null' to
+     disable caching.
+
+'--config-cache'
+'-C'
+     Alias for '--cache-file=config.cache'.
+
+'--quiet'
+'--silent'
+'-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to '/dev/null' (any error
+     messages will still be shown).
+
+'--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     'configure' can determine that directory automatically.
+
+'--prefix=DIR'
+     Use DIR as the installation prefix.  *note Installation Names:: for
+     more details, including other options available for fine-tuning the
+     installation locations.
+
+'--no-create'
+'-n'
+     Run the configure checks, but stop before creating any output
+     files.
+
+'configure' also accepts some other, not widely useful, options.  Run
+'configure --help' for more details.

node_modules/@discordjs/opus/deps/opus/Makefile.am

@@ -21,6 +21,9 @@ SILK_SOURCES += $(SILK_SOURCES_FIXED)
 if HAVE_SSE4_1
 SILK_SOURCES += $(SILK_SOURCES_SSE4_1) $(SILK_SOURCES_FIXED_SSE4_1)
 endif
+if HAVE_ARM_NEON_INTR
+SILK_SOURCES += $(SILK_SOURCES_FIXED_ARM_NEON_INTR)
+endif
 else
 SILK_SOURCES += $(SILK_SOURCES_FLOAT)
 if HAVE_SSE4_1
@@ -47,8 +50,9 @@ if CPU_ARM
 CELT_SOURCES += $(CELT_SOURCES_ARM)
 SILK_SOURCES += $(SILK_SOURCES_ARM)
 
-if OPUS_ARM_NEON_INTR
+if HAVE_ARM_NEON_INTR
 CELT_SOURCES += $(CELT_SOURCES_ARM_NEON_INTR)
+SILK_SOURCES += $(SILK_SOURCES_ARM_NEON_INTR)
 endif
 
 if HAVE_ARM_NE10
@@ -78,14 +82,43 @@ if OPUS_ARM_EXTERNAL_ASM
 libopus_la_LIBADD += libarmasm.la
 endif
 
-pkginclude_HEADERS = include/opus.h include/opus_multistream.h include/opus_types.h include/opus_defines.h
+pkginclude_HEADERS = include/opus.h include/opus_multistream.h include/opus_types.h include/opus_defines.h include/opus_projection.h
 
 noinst_HEADERS = $(OPUS_HEAD) $(SILK_HEAD) $(CELT_HEAD)
 
 if EXTRA_PROGRAMS
-noinst_PROGRAMS = opus_demo repacketizer_demo opus_compare tests/test_opus_api tests/test_opus_encode tests/test_opus_decode tests/test_opus_padding celt/tests/test_unit_cwrs32 celt/tests/test_unit_dft celt/tests/test_unit_entropy celt/tests/test_unit_laplace celt/tests/test_unit_mathops celt/tests/test_unit_mdct celt/tests/test_unit_rotation celt/tests/test_unit_types
+noinst_PROGRAMS = celt/tests/test_unit_cwrs32 \
+                  celt/tests/test_unit_dft \
+                  celt/tests/test_unit_entropy \
+                  celt/tests/test_unit_laplace \
+                  celt/tests/test_unit_mathops \
+                  celt/tests/test_unit_mdct \
+                  celt/tests/test_unit_rotation \
+                  celt/tests/test_unit_types \
+                  opus_compare \
+                  opus_demo \
+                  repacketizer_demo \
+                  silk/tests/test_unit_LPC_inv_pred_gain \
+                  tests/test_opus_api \
+                  tests/test_opus_decode \
+                  tests/test_opus_encode \
+                  tests/test_opus_padding \
+                  tests/test_opus_projection
 
-TESTS = celt/tests/test_unit_types celt/tests/test_unit_mathops celt/tests/test_unit_entropy celt/tests/test_unit_laplace celt/tests/test_unit_dft celt/tests/test_unit_mdct celt/tests/test_unit_rotation celt/tests/test_unit_cwrs32 tests/test_opus_api tests/test_opus_decode tests/test_opus_encode tests/test_opus_padding
+TESTS = celt/tests/test_unit_cwrs32 \
+        celt/tests/test_unit_dft \
+        celt/tests/test_unit_entropy \
+        celt/tests/test_unit_laplace \
+        celt/tests/test_unit_mathops \
+        celt/tests/test_unit_mdct \
+        celt/tests/test_unit_rotation \
+        celt/tests/test_unit_types \
+        silk/tests/test_unit_LPC_inv_pred_gain \
+        tests/test_opus_api \
+        tests/test_opus_decode \
+        tests/test_opus_encode \
+        tests/test_opus_padding \
+        tests/test_opus_projection
 
 opus_demo_SOURCES = src/opus_demo.c
 
@@ -101,7 +134,7 @@ opus_compare_LDADD = $(LIBM)
 tests_test_opus_api_SOURCES = tests/test_opus_api.c tests/test_opus_common.h
 tests_test_opus_api_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
 
-tests_test_opus_encode_SOURCES = tests/test_opus_encode.c tests/test_opus_common.h
+tests_test_opus_encode_SOURCES = tests/test_opus_encode.c tests/opus_encode_regressions.c tests/test_opus_common.h
 tests_test_opus_encode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
 
 tests_test_opus_decode_SOURCES = tests/test_opus_decode.c tests/test_opus_common.h
@@ -110,11 +143,27 @@ tests_test_opus_decode_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
 tests_test_opus_padding_SOURCES = tests/test_opus_padding.c tests/test_opus_common.h
 tests_test_opus_padding_LDADD = libopus.la $(NE10_LIBS) $(LIBM)
 
+CELT_OBJ = $(CELT_SOURCES:.c=.lo)
+SILK_OBJ = $(SILK_SOURCES:.c=.lo)
+OPUS_OBJ = $(OPUS_SOURCES:.c=.lo)
+
+tests_test_opus_projection_SOURCES = tests/test_opus_projection.c tests/test_opus_common.h
+tests_test_opus_projection_LDADD = $(OPUS_OBJ) $(SILK_OBJ) $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+tests_test_opus_projection_LDADD += libarmasm.la
+endif
+
+silk_tests_test_unit_LPC_inv_pred_gain_SOURCES = silk/tests/test_unit_LPC_inv_pred_gain.c
+silk_tests_test_unit_LPC_inv_pred_gain_LDADD = $(SILK_OBJ) $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
+if OPUS_ARM_EXTERNAL_ASM
+silk_tests_test_unit_LPC_inv_pred_gain_LDADD += libarmasm.la
+endif
+
 celt_tests_test_unit_cwrs32_SOURCES = celt/tests/test_unit_cwrs32.c
 celt_tests_test_unit_cwrs32_LDADD = $(LIBM)
 
 celt_tests_test_unit_dft_SOURCES = celt/tests/test_unit_dft.c
-celt_tests_test_unit_dft_LDADD = $(NE10_LIBS) $(LIBM)
+celt_tests_test_unit_dft_LDADD = $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
 if OPUS_ARM_EXTERNAL_ASM
 celt_tests_test_unit_dft_LDADD += libarmasm.la
 endif
@@ -126,19 +175,19 @@ celt_tests_test_unit_laplace_SOURCES = celt/tests/test_unit_laplace.c
 celt_tests_test_unit_laplace_LDADD = $(LIBM)
 
 celt_tests_test_unit_mathops_SOURCES = celt/tests/test_unit_mathops.c
-celt_tests_test_unit_mathops_LDADD = $(NE10_LIBS) $(LIBM)
+celt_tests_test_unit_mathops_LDADD = $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
 if OPUS_ARM_EXTERNAL_ASM
 celt_tests_test_unit_mathops_LDADD += libarmasm.la
 endif
 
 celt_tests_test_unit_mdct_SOURCES = celt/tests/test_unit_mdct.c
-celt_tests_test_unit_mdct_LDADD = $(NE10_LIBS) $(LIBM)
+celt_tests_test_unit_mdct_LDADD = $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
 if OPUS_ARM_EXTERNAL_ASM
 celt_tests_test_unit_mdct_LDADD += libarmasm.la
 endif
 
 celt_tests_test_unit_rotation_SOURCES = celt/tests/test_unit_rotation.c
-celt_tests_test_unit_rotation_LDADD = $(NE10_LIBS) $(LIBM)
+celt_tests_test_unit_rotation_LDADD = $(CELT_OBJ) $(NE10_LIBS) $(LIBM)
 if OPUS_ARM_EXTERNAL_ASM
 celt_tests_test_unit_rotation_LDADD += libarmasm.la
 endif
@@ -156,34 +205,32 @@ opus_custom_demo_LDADD = libopus.la $(LIBM)
 endif
 endif
 
-EXTRA_DIST = version.mk \
-             opus.pc.in \
+EXTRA_DIST = opus.pc.in \
              opus-uninstalled.pc.in \
              opus.m4 \
              Makefile.mips \
              Makefile.unix \
+             CMakeLists.txt \
+             config.h.cmake.in \
+             opus_config.cmake \
+             opus_functions.cmake \
+             opus_sources.cmake \
+             OpusConfig.cmake.in \
              tests/run_vectors.sh \
              celt/arm/arm2gnu.pl \
              celt/arm/celt_pitch_xcorr_arm.s \
-             win32/VS2010/silk_float.vcxproj \
-             win32/VS2010/celt.vcxproj.filters \
-             win32/VS2010/opus.vcxproj \
-             win32/VS2010/silk_common.vcxproj.filters \
-             win32/VS2010/silk_float.vcxproj.filters \
-             win32/VS2010/test_opus_encode.vcxproj.filters \
-             win32/VS2010/silk_common.vcxproj \
-             win32/VS2010/test_opus_encode.vcxproj \
-             win32/VS2010/opus_demo.vcxproj \
-             win32/VS2010/test_opus_api.vcxproj.filters \
-             win32/VS2010/test_opus_api.vcxproj \
-             win32/VS2010/test_opus_decode.vcxproj.filters \
-             win32/VS2010/silk_fixed.vcxproj.filters \
-             win32/VS2010/opus_demo.vcxproj.filters \
-             win32/VS2010/silk_fixed.vcxproj \
-             win32/VS2010/opus.vcxproj.filters \
-             win32/VS2010/test_opus_decode.vcxproj \
-             win32/VS2010/celt.vcxproj \
-             win32/VS2010/opus.sln \
+             win32/VS2015/opus.vcxproj \
+             win32/VS2015/test_opus_encode.vcxproj.filters \
+             win32/VS2015/test_opus_encode.vcxproj \
+             win32/VS2015/opus_demo.vcxproj \
+             win32/VS2015/test_opus_api.vcxproj.filters \
+             win32/VS2015/test_opus_api.vcxproj \
+             win32/VS2015/test_opus_decode.vcxproj.filters \
+             win32/VS2015/opus_demo.vcxproj.filters \
+             win32/VS2015/opus.vcxproj.filters \
+             win32/VS2015/test_opus_decode.vcxproj \
+             win32/VS2015/opus.sln \
+             win32/VS2015/common.props \
              win32/genversion.bat \
              win32/config.h
 
@@ -275,27 +322,30 @@ $(CELT_SOURCES_ARM_ASM:%.s=%-gnu.S): $(top_srcdir)/celt/arm/arm2gnu.pl
 OPT_UNIT_TEST_OBJ = $(celt_tests_test_unit_mathops_SOURCES:.c=.o) \
                     $(celt_tests_test_unit_rotation_SOURCES:.c=.o) \
                     $(celt_tests_test_unit_mdct_SOURCES:.c=.o) \
-                    $(celt_tests_test_unit_dft_SOURCES:.c=.o)
+                    $(celt_tests_test_unit_dft_SOURCES:.c=.o) \
+                    $(silk_tests_test_unit_LPC_inv_pred_gain_SOURCES:.c=.o)
 
 if HAVE_SSE
 SSE_OBJ = $(CELT_SOURCES_SSE:.c=.lo)
-$(SSE_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE_CFLAGS)
+$(SSE_OBJ): CFLAGS += $(OPUS_X86_SSE_CFLAGS)
 endif
 
 if HAVE_SSE2
 SSE2_OBJ = $(CELT_SOURCES_SSE2:.c=.lo)
-$(SSE2_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE2_CFLAGS)
+$(SSE2_OBJ): CFLAGS += $(OPUS_X86_SSE2_CFLAGS)
 endif
 
 if HAVE_SSE4_1
 SSE4_1_OBJ = $(CELT_SOURCES_SSE4_1:.c=.lo) \
              $(SILK_SOURCES_SSE4_1:.c=.lo) \
              $(SILK_SOURCES_FIXED_SSE4_1:.c=.lo)
-$(SSE4_1_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += $(OPUS_X86_SSE4_1_CFLAGS)
+$(SSE4_1_OBJ): CFLAGS += $(OPUS_X86_SSE4_1_CFLAGS)
 endif
 
-if OPUS_ARM_NEON_INTR
-CELT_ARM_NEON_INTR_OBJ = $(CELT_SOURCES_ARM_NEON_INTR:.c=.lo)
-$(CELT_ARM_NEON_INTR_OBJ) $(OPT_UNIT_TEST_OBJ): CFLAGS += \
+if HAVE_ARM_NEON_INTR
+ARM_NEON_INTR_OBJ = $(CELT_SOURCES_ARM_NEON_INTR:.c=.lo) \
+                    $(SILK_SOURCES_ARM_NEON_INTR:.c=.lo) \
+                    $(SILK_SOURCES_FIXED_ARM_NEON_INTR:.c=.lo)
+$(ARM_NEON_INTR_OBJ): CFLAGS += \
  $(OPUS_ARM_NEON_INTR_CFLAGS)  $(NE10_CFLAGS)
 endif

node_modules/@discordjs/opus/deps/opus/Makefile.mips

@@ -12,7 +12,7 @@ CFLAGS := -DUSE_ALLOCA $(CFLAGS)
 
 # These options affect performance
 # HAVE_LRINTF: Use C99 intrinsics to speed up float-to-int conversion
-#CFLAGS := -DHAVE_LRINTF $(CFLAGS)
+CFLAGS := -DHAVE_LRINTF $(CFLAGS)
 
 ###################### END OF OPTIONS ######################
 
@@ -99,7 +99,7 @@ TESTOPUSAPI_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSAPI_SRCS_C))
 TESTOPUSDECODE_SRCS_C = tests/test_opus_decode.c
 TESTOPUSDECODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSDECODE_SRCS_C))
 
-TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c
+TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c tests/opus_encode_regressions.c
 TESTOPUSENCODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSENCODE_SRCS_C))
 
 TESTOPUSPADDING_SRCS_C = tests/test_opus_padding.c

node_modules/@discordjs/opus/deps/opus/Makefile.unix

@@ -97,7 +97,7 @@ TESTOPUSAPI_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSAPI_SRCS_C))
 TESTOPUSDECODE_SRCS_C = tests/test_opus_decode.c
 TESTOPUSDECODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSDECODE_SRCS_C))
 
-TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c
+TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c tests/opus_encode_regressions.c
 TESTOPUSENCODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSENCODE_SRCS_C))
 
 TESTOPUSPADDING_SRCS_C = tests/test_opus_padding.c

node_modules/@discordjs/opus/deps/opus/OpusConfig.cmake.in

@@ -0,0 +1,19 @@
+set(OPUS_VERSION @PROJECT_VERSION@)
+set(OPUS_VERSION_STRING @PROJECT_VERSION@)
+set(OPUS_VERSION_MAJOR @PROJECT_VERSION_MAJOR@)
+set(OPUS_VERSION_MINOR @PROJECT_VERSION_MINOR@)
+set(OPUS_VERSION_PATCH @PROJECT_VERSION_PATCH@)
+
+@PACKAGE_INIT@
+
+set_and_check(OPUS_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
+set_and_check(OPUS_INCLUDE_DIRS "@PACKAGE_INCLUDE_INSTALL_DIR@")
+
+include(${CMAKE_CURRENT_LIST_DIR}/OpusTargets.cmake)
+
+set(OPUS_LIBRARY Opus::opus)
+set(OPUS_LIBRARIES Opus::opus)
+
+check_required_components(Opus)
+
+set(OPUS_FOUND 1)

node_modules/@discordjs/opus/deps/opus/README

@@ -29,7 +29,7 @@ additional debugging data and cannot support seeking.
 
 Opus stored in files should use the Ogg encapsulation for Opus which is
 described at:
- https://wiki.xiph.org/OggOpus
+ https://tools.ietf.org/html/rfc7845
 
 An opus-tools package is available which provides encoding and decoding of
 Ogg encapsulated Opus files and includes a number of useful features.
@@ -43,25 +43,43 @@ or on the main Opus website:
 
 To build from a distribution tarball, you only need to do the following:
 
-% ./configure
-% make
+    % ./configure
+    % make
 
 To build from the git repository, the following steps are necessary:
 
+0) Set up a development environment:
+
+On an Ubuntu or Debian family Linux distribution:
+
+    % sudo apt-get install git autoconf automake libtool gcc make
+
+On a Fedora/Redhat based Linux:
+
+    % sudo dnf install git autoconf automake libtool gcc make
+
+Or for older Redhat/Centos Linux releases:
+
+    % sudo yum install git autoconf automake libtool gcc make
+
+On Apple macOS, install Xcode and brew.sh, then in the Terminal enter:
+
+    % brew install autoconf automake libtool
+
 1) Clone the repository:
 
-% git clone https://git.xiph.org/opus.git
-% cd opus
+    % git clone https://git.xiph.org/opus.git
+    % cd opus
 
 2) Compiling the source
 
-% ./autogen.sh
-% ./configure
-% make
+    % ./autogen.sh
+    % ./configure
+    % make
 
 3) Install the codec libraries (optional)
 
-% sudo make install
+    % sudo make install
 
 Once you have compiled the codec, there will be a opus_demo executable
 in the top directory.
@@ -102,17 +120,18 @@ which SHOULD be run after compiling the package especially the first
 time it is run on a new platform.
 
 To run the integrated tests:
-% make check
+
+    % make check
 
 There is also collection of standard test vectors which are not
 included in this package for size reasons but can be obtained from:
-https://opus-codec.org/testvectors/opus_testvectors.tar.gz
+https://opus-codec.org/docs/opus_testvectors-rfc8251.tar.gz
 
 To run compare the code to these test vectors:
 
-% curl -O https://opus-codec.org/testvectors/opus_testvectors.tar.gz
-% tar -zxf opus_testvectors.tar.gz
-% ./tests/run_vectors.sh ./ opus_testvectors 48000
+    % curl -OL https://opus-codec.org/docs/opus_testvectors-rfc8251.tar.gz
+    % tar -zxf opus_testvectors-rfc8251.tar.gz
+    % ./tests/run_vectors.sh ./ opus_newvectors 48000
 
 == Portability notes ==
 

node_modules/@discordjs/opus/deps/opus/aclocal.m4

@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.15 -*- Autoconf -*-
+# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
 
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -20,7 +20,7 @@ You have another version of autoconf.  It may work, but is not guaranteed to.
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
 
-# Copyright (C) 2002-2014 Free Software Foundation, Inc.
+# Copyright (C) 2002-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -35,7 +35,7 @@ AC_DEFUN([AM_AUTOMAKE_VERSION],
 [am__api_version='1.15'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.15], [],
+m4_if([$1], [1.15.1], [],
       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])
 
@@ -51,14 +51,14 @@ m4_define([_AM_AUTOCONF_VERSION], [])
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.15])dnl
+[AM_AUTOMAKE_VERSION([1.15.1])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 
 # Figure out how to run the assembler.                      -*- Autoconf -*-
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -78,7 +78,7 @@ _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
 
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -130,7 +130,7 @@ am_aux_dir=`cd "$ac_aux_dir" && pwd`
 
 # AM_CONDITIONAL                                            -*- Autoconf -*-
 
-# Copyright (C) 1997-2014 Free Software Foundation, Inc.
+# Copyright (C) 1997-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -161,7 +161,7 @@ AC_CONFIG_COMMANDS_PRE(
 Usually this means the macro was only invoked conditionally.]])
 fi])])
 
-# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -352,7 +352,7 @@ _AM_SUBST_NOTMAKE([am__nodep])dnl
 
 # Generate code to set up dependency tracking.              -*- Autoconf -*-
 
-# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -428,7 +428,7 @@ AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
 
 # Do all the work for Automake.                             -*- Autoconf -*-
 
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -625,7 +625,7 @@ for _am_header in $config_headers :; do
 done
 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -646,7 +646,7 @@ if test x"${install_sh+set}" != xset; then
 fi
 AC_SUBST([install_sh])])
 
-# Copyright (C) 2003-2014 Free Software Foundation, Inc.
+# Copyright (C) 2003-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -668,7 +668,7 @@ AC_SUBST([am__leading_dot])])
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering
 
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -703,7 +703,7 @@ AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
 
 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -753,7 +753,7 @@ rm -f confinc confmf
 
 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 
-# Copyright (C) 1997-2014 Free Software Foundation, Inc.
+# Copyright (C) 1997-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -792,7 +792,7 @@ fi
 
 # Helper functions for option handling.                     -*- Autoconf -*-
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -821,7 +821,7 @@ AC_DEFUN([_AM_SET_OPTIONS],
 AC_DEFUN([_AM_IF_OPTION],
 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 
-# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -868,7 +868,7 @@ AC_LANG_POP([C])])
 # For backward compatibility.
 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -887,7 +887,7 @@ AC_DEFUN([AM_RUN_LOG],
 
 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -968,7 +968,7 @@ AC_CONFIG_COMMANDS_PRE(
 rm -f conftest.file
 ])
 
-# Copyright (C) 2009-2014 Free Software Foundation, Inc.
+# Copyright (C) 2009-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1028,7 +1028,7 @@ AC_SUBST([AM_BACKSLASH])dnl
 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 ])
 
-# Copyright (C) 2001-2014 Free Software Foundation, Inc.
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1056,7 +1056,7 @@ fi
 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 
-# Copyright (C) 2006-2014 Free Software Foundation, Inc.
+# Copyright (C) 2006-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1075,7 +1075,7 @@ AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 
 # Check how to create a tarball.                            -*- Autoconf -*-
 
-# Copyright (C) 2004-2014 Free Software Foundation, Inc.
+# Copyright (C) 2004-2017 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -1207,6 +1207,7 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([m4/as-gcc-inline-assembly.m4])
+m4_include([m4/ax_add_fortify_source.m4])
 m4_include([m4/libtool.m4])
 m4_include([m4/ltoptions.m4])
 m4_include([m4/ltsugar.m4])

node_modules/@discordjs/opus/deps/opus/celt/_kiss_fft_guts.h

@@ -58,12 +58,12 @@
 #   define S_MUL(a,b) MULT16_32_Q15(b, a)
 
 #   define C_MUL(m,a,b) \
-      do{ (m).r = SUB32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
-          (m).i = ADD32(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
+      do{ (m).r = SUB32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+          (m).i = ADD32_ovflw(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
 
 #   define C_MULC(m,a,b) \
-      do{ (m).r = ADD32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
-          (m).i = SUB32(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
+      do{ (m).r = ADD32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+          (m).i = SUB32_ovflw(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
 
 #   define C_MULBYSCALAR( c, s ) \
       do{ (c).r =  S_MUL( (c).r , s ) ;\
@@ -77,17 +77,17 @@
                 DIVSCALAR( (c).i  , div); }while (0)
 
 #define  C_ADD( res, a,b)\
-    do {(res).r=ADD32((a).r,(b).r);  (res).i=ADD32((a).i,(b).i); \
+    do {(res).r=ADD32_ovflw((a).r,(b).r);  (res).i=ADD32_ovflw((a).i,(b).i); \
     }while(0)
 #define  C_SUB( res, a,b)\
-    do {(res).r=SUB32((a).r,(b).r);  (res).i=SUB32((a).i,(b).i); \
+    do {(res).r=SUB32_ovflw((a).r,(b).r);  (res).i=SUB32_ovflw((a).i,(b).i); \
     }while(0)
 #define C_ADDTO( res , a)\
-    do {(res).r = ADD32((res).r, (a).r);  (res).i = ADD32((res).i,(a).i);\
+    do {(res).r = ADD32_ovflw((res).r, (a).r);  (res).i = ADD32_ovflw((res).i,(a).i);\
     }while(0)
 
 #define C_SUBFROM( res , a)\
-    do {(res).r = ADD32((res).r,(a).r);  (res).i = SUB32((res).i,(a).i); \
+    do {(res).r = ADD32_ovflw((res).r,(a).r);  (res).i = SUB32_ovflw((res).i,(a).i); \
     }while(0)
 
 #if defined(OPUS_ARM_INLINE_ASM)

node_modules/@discordjs/opus/deps/opus/celt/arch.h

@@ -46,25 +46,50 @@
 #  endif
 # endif
 
+#if OPUS_GNUC_PREREQ(3, 0)
+#define opus_likely(x)       (__builtin_expect(!!(x), 1))
+#define opus_unlikely(x)     (__builtin_expect(!!(x), 0))
+#else
+#define opus_likely(x)       (!!(x))
+#define opus_unlikely(x)     (!!(x))
+#endif
+
 #define CELT_SIG_SCALE 32768.f
 
-#define celt_fatal(str) _celt_fatal(str, __FILE__, __LINE__);
-#ifdef ENABLE_ASSERTIONS
+#define CELT_FATAL(str) celt_fatal(str, __FILE__, __LINE__);
+
+#if defined(ENABLE_ASSERTIONS) || defined(ENABLE_HARDENING)
+#ifdef __GNUC__
+__attribute__((noreturn))
+#endif
+void celt_fatal(const char *str, const char *file, int line);
+
+#if defined(CELT_C) && !defined(OVERRIDE_celt_fatal)
 #include <stdio.h>
 #include <stdlib.h>
 #ifdef __GNUC__
 __attribute__((noreturn))
 #endif
-static OPUS_INLINE void _celt_fatal(const char *str, const char *file, int line)
+void celt_fatal(const char *str, const char *file, int line)
 {
    fprintf (stderr, "Fatal (internal) error in %s, line %d: %s\n", file, line, str);
    abort();
 }
-#define celt_assert(cond) {if (!(cond)) {celt_fatal("assertion failed: " #cond);}}
-#define celt_assert2(cond, message) {if (!(cond)) {celt_fatal("assertion failed: " #cond "\n" message);}}
+#endif
+
+#define celt_assert(cond) {if (!(cond)) {CELT_FATAL("assertion failed: " #cond);}}
+#define celt_assert2(cond, message) {if (!(cond)) {CELT_FATAL("assertion failed: " #cond "\n" message);}}
+#define MUST_SUCCEED(call) celt_assert((call) == OPUS_OK)
 #else
 #define celt_assert(cond)
 #define celt_assert2(cond, message)
+#define MUST_SUCCEED(call) do {if((call) != OPUS_OK) {RESTORE_STACK; return OPUS_INTERNAL_ERROR;} } while (0)
+#endif
+
+#if defined(ENABLE_ASSERTIONS)
+#define celt_sig_assert(cond) {if (!(cond)) {CELT_FATAL("signal assertion failed: " #cond);}}
+#else
+#define celt_sig_assert(cond)
 #endif
 
 #define IMUL32(a,b) ((a)*(b))
@@ -78,20 +103,35 @@ static OPUS_INLINE void _celt_fatal(const char *str, const char *file, int line)
 #define UADD32(a,b) ((a)+(b))
 #define USUB32(a,b) ((a)-(b))
 
+/* Set this if opus_int64 is a native type of the CPU. */
+/* Assume that all LP64 architectures have fast 64-bit types; also x86_64
+   (which can be ILP32 for x32) and Win64 (which is LLP64). */
+#if defined(__x86_64__) || defined(__LP64__) || defined(_WIN64)
+#define OPUS_FAST_INT64 1
+#else
+#define OPUS_FAST_INT64 0
+#endif
+
 #define PRINT_MIPS(file)
 
 #ifdef FIXED_POINT
 
 typedef opus_int16 opus_val16;
 typedef opus_int32 opus_val32;
+typedef opus_int64 opus_val64;
 
 typedef opus_val32 celt_sig;
 typedef opus_val16 celt_norm;
 typedef opus_val32 celt_ener;
 
+#define celt_isnan(x) 0
+
 #define Q15ONE 32767
 
 #define SIG_SHIFT 12
+/* Safe saturation value for 32-bit signals. Should be less than
+   2^31*(1-0.85) to avoid blowing up on DC at deemphasis.*/
+#define SIG_SAT (300000000)
 
 #define NORM_SCALING 16384
 
@@ -118,7 +158,9 @@ static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
 
 #include "fixed_generic.h"
 
-#ifdef OPUS_ARM_INLINE_EDSP
+#ifdef OPUS_ARM_PRESUME_AARCH64_NEON_INTR
+#include "arm/fixed_arm64.h"
+#elif defined (OPUS_ARM_INLINE_EDSP)
 #include "arm/fixed_armv5e.h"
 #elif defined (OPUS_ARM_INLINE_ASM)
 #include "arm/fixed_armv4.h"
@@ -136,6 +178,7 @@ static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
 
 typedef float opus_val16;
 typedef float opus_val32;
+typedef float opus_val64;
 
 typedef float celt_sig;
 typedef float celt_norm;
@@ -175,6 +218,7 @@ static OPUS_INLINE int celt_isnan(float x)
 
 #define NEG16(x) (-(x))
 #define NEG32(x) (-(x))
+#define NEG32_ovflw(x) (-(x))
 #define EXTRACT16(x) (x)
 #define EXTEND32(x) (x)
 #define SHR16(a,shift) (a)
@@ -191,6 +235,7 @@ static OPUS_INLINE int celt_isnan(float x)
 #define SATURATE16(x)   (x)
 
 #define ROUND16(a,shift)  (a)
+#define SROUND16(a,shift) (a)
 #define HALF16(x)       (.5f*(x))
 #define HALF32(x)       (.5f*(x))
 
@@ -198,6 +243,8 @@ static OPUS_INLINE int celt_isnan(float x)
 #define SUB16(a,b) ((a)-(b))
 #define ADD32(a,b) ((a)+(b))
 #define SUB32(a,b) ((a)-(b))
+#define ADD32_ovflw(a,b) ((a)+(b))
+#define SUB32_ovflw(a,b) ((a)-(b))
 #define MULT16_16_16(a,b)     ((a)*(b))
 #define MULT16_16(a,b)     ((opus_val32)(a)*(opus_val32)(b))
 #define MAC16_16(c,a,b)     ((c)+(opus_val32)(a)*(opus_val32)(b))
@@ -232,9 +279,9 @@ static OPUS_INLINE int celt_isnan(float x)
 
 #ifndef GLOBAL_STACK_SIZE
 #ifdef FIXED_POINT
-#define GLOBAL_STACK_SIZE 100000
+#define GLOBAL_STACK_SIZE 120000
 #else
-#define GLOBAL_STACK_SIZE 100000
+#define GLOBAL_STACK_SIZE 120000
 #endif
 #endif
 

node_modules/@discordjs/opus/deps/opus/celt/arm/arm2gnu.pl

@@ -164,11 +164,11 @@ while (<>) {
         $prefix = "";
         if ($proc)
         {
-            $prefix = $prefix.sprintf("\t.type\t%s, %%function; ",$proc) unless ($apple);
+            $prefix = $prefix.sprintf("\t.type\t%s, %%function", $proc) unless ($apple);
             # Make sure we $prefix isn't empty here (for the $apple case).
             # We handle mangling the label here, make sure it doesn't match
             # the label handling below (if $prefix would be empty).
-            $prefix = "; ";
+            $prefix = $prefix."; ";
             push(@proc_stack, $proc);
             s/^[A-Za-z_\.]\w+/$symprefix$&:/;
         }

node_modules/@discordjs/opus/deps/opus/celt/arm/arm_celt_map.c

@@ -35,18 +35,40 @@
 
 #if defined(OPUS_HAVE_RTCD)
 
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR)
+opus_val32 (*const CELT_INNER_PROD_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *x, const opus_val16 *y, int N) = {
+  celt_inner_prod_c,   /* ARMv4 */
+  celt_inner_prod_c,   /* EDSP */
+  celt_inner_prod_c,   /* Media */
+  celt_inner_prod_neon /* NEON */
+};
+
+void (*const DUAL_INNER_PROD_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+      int N, opus_val32 *xy1, opus_val32 *xy2) = {
+  dual_inner_prod_c,   /* ARMv4 */
+  dual_inner_prod_c,   /* EDSP */
+  dual_inner_prod_c,   /* Media */
+  dual_inner_prod_neon /* NEON */
+};
+# endif
+
 # if defined(FIXED_POINT)
+#  if ((defined(OPUS_ARM_MAY_HAVE_NEON) && !defined(OPUS_ARM_PRESUME_NEON)) || \
+    (defined(OPUS_ARM_MAY_HAVE_MEDIA) && !defined(OPUS_ARM_PRESUME_MEDIA)) || \
+    (defined(OPUS_ARM_MAY_HAVE_EDSP) && !defined(OPUS_ARM_PRESUME_EDSP)))
 opus_val32 (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
-    const opus_val16 *, opus_val32 *, int , int) = {
+    const opus_val16 *, opus_val32 *, int, int, int) = {
   celt_pitch_xcorr_c,               /* ARMv4 */
   MAY_HAVE_EDSP(celt_pitch_xcorr),  /* EDSP */
   MAY_HAVE_MEDIA(celt_pitch_xcorr), /* Media */
   MAY_HAVE_NEON(celt_pitch_xcorr)   /* NEON */
 };
+
+#  endif
 # else /* !FIXED_POINT */
-#  if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+#  if defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR)
 void (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
-    const opus_val16 *, opus_val32 *, int, int) = {
+    const opus_val16 *, opus_val32 *, int, int, int) = {
   celt_pitch_xcorr_c,              /* ARMv4 */
   celt_pitch_xcorr_c,              /* EDSP */
   celt_pitch_xcorr_c,              /* Media */
@@ -55,6 +77,23 @@ void (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
 #  endif
 # endif /* FIXED_POINT */
 
+#if defined(FIXED_POINT) && defined(OPUS_HAVE_RTCD) && \
+ defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR)
+
+void (*const XCORR_KERNEL_IMPL[OPUS_ARCHMASK + 1])(
+         const opus_val16 *x,
+         const opus_val16 *y,
+         opus_val32       sum[4],
+         int              len
+) = {
+  xcorr_kernel_c,                /* ARMv4 */
+  xcorr_kernel_c,                /* EDSP */
+  xcorr_kernel_c,                /* Media */
+  xcorr_kernel_neon_fixed,       /* Neon */
+};
+
+#endif
+
 # if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
 #  if defined(HAVE_ARM_NE10)
 #   if defined(CUSTOM_MODES)

node_modules/@discordjs/opus/deps/opus/celt/arm/armcpu.c

@@ -37,11 +37,12 @@
 #include "cpu_support.h"
 #include "os_support.h"
 #include "opus_types.h"
+#include "arch.h"
 
-#define OPUS_CPU_ARM_V4    (1)
-#define OPUS_CPU_ARM_EDSP  (1<<1)
-#define OPUS_CPU_ARM_MEDIA (1<<2)
-#define OPUS_CPU_ARM_NEON  (1<<3)
+#define OPUS_CPU_ARM_V4_FLAG    (1<<OPUS_ARCH_ARM_V4)
+#define OPUS_CPU_ARM_EDSP_FLAG  (1<<OPUS_ARCH_ARM_EDSP)
+#define OPUS_CPU_ARM_MEDIA_FLAG (1<<OPUS_ARCH_ARM_MEDIA)
+#define OPUS_CPU_ARM_NEON_FLAG  (1<<OPUS_ARCH_ARM_NEON)
 
 #if defined(_MSC_VER)
 /*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
@@ -55,20 +56,22 @@ static OPUS_INLINE opus_uint32 opus_cpu_capabilities(void){
   /* MSVC has no OPUS_INLINE __asm support for ARM, but it does let you __emit
    * instructions via their assembled hex code.
    * All of these instructions should be essentially nops. */
-# if defined(OPUS_ARM_MAY_HAVE_EDSP)
+# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
   __try{
     /*PLD [r13]*/
     __emit(0xF5DDF000);
-    flags|=OPUS_CPU_ARM_EDSP;
+    flags|=OPUS_CPU_ARM_EDSP_FLAG;
   }
   __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
     /*Ignore exception.*/
   }
-#  if defined(OPUS_ARM_MAY_HAVE_MEDIA)
+#  if defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
   __try{
     /*SHADD8 r3,r3,r3*/
     __emit(0xE6333F93);
-    flags|=OPUS_CPU_ARM_MEDIA;
+    flags|=OPUS_CPU_ARM_MEDIA_FLAG;
   }
   __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
     /*Ignore exception.*/
@@ -77,7 +80,7 @@ static OPUS_INLINE opus_uint32 opus_cpu_capabilities(void){
   __try{
     /*VORR q0,q0,q0*/
     __emit(0xF2200150);
-    flags|=OPUS_CPU_ARM_NEON;
+    flags|=OPUS_CPU_ARM_NEON_FLAG;
   }
   __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
     /*Ignore exception.*/
@@ -107,26 +110,26 @@ opus_uint32 opus_cpu_capabilities(void)
 
     while(fgets(buf, 512, cpuinfo) != NULL)
     {
-# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
       /* Search for edsp and neon flag */
       if(memcmp(buf, "Features", 8) == 0)
       {
         char *p;
-#  if defined(OPUS_ARM_MAY_HAVE_EDSP)
         p = strstr(buf, " edsp");
         if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
-          flags |= OPUS_CPU_ARM_EDSP;
-#  endif
+          flags |= OPUS_CPU_ARM_EDSP_FLAG;
 
 #  if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
         p = strstr(buf, " neon");
         if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
-          flags |= OPUS_CPU_ARM_NEON;
+          flags |= OPUS_CPU_ARM_NEON_FLAG;
 #  endif
       }
 # endif
 
-# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
+# if defined(OPUS_ARM_MAY_HAVE_MEDIA) \
+ || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
       /* Search for media capabilities (>= ARMv6) */
       if(memcmp(buf, "CPU architecture:", 17) == 0)
       {
@@ -134,7 +137,7 @@ opus_uint32 opus_cpu_capabilities(void)
         version = atoi(buf+17);
 
         if(version >= 6)
-          flags |= OPUS_CPU_ARM_MEDIA;
+          flags |= OPUS_CPU_ARM_MEDIA_FLAG;
       }
 # endif
     }
@@ -156,18 +159,26 @@ int opus_select_arch(void)
   opus_uint32 flags = opus_cpu_capabilities();
   int arch = 0;
 
-  if(!(flags & OPUS_CPU_ARM_EDSP))
+  if(!(flags & OPUS_CPU_ARM_EDSP_FLAG)) {
+    /* Asserts ensure arch values are sequential */
+    celt_assert(arch == OPUS_ARCH_ARM_V4);
     return arch;
+  }
   arch++;
 
-  if(!(flags & OPUS_CPU_ARM_MEDIA))
+  if(!(flags & OPUS_CPU_ARM_MEDIA_FLAG)) {
+    celt_assert(arch == OPUS_ARCH_ARM_EDSP);
     return arch;
+  }
   arch++;
 
-  if(!(flags & OPUS_CPU_ARM_NEON))
+  if(!(flags & OPUS_CPU_ARM_NEON_FLAG)) {
+    celt_assert(arch == OPUS_ARCH_ARM_MEDIA);
     return arch;
+  }
   arch++;
 
+  celt_assert(arch == OPUS_ARCH_ARM_NEON);
   return arch;
 }
 

node_modules/@discordjs/opus/deps/opus/celt/arm/armcpu.h

@@ -66,6 +66,12 @@
 
 # if defined(OPUS_HAVE_RTCD)
 int opus_select_arch(void);
+
+#define OPUS_ARCH_ARM_V4    (0)
+#define OPUS_ARCH_ARM_EDSP  (1)
+#define OPUS_ARCH_ARM_MEDIA (2)
+#define OPUS_ARCH_ARM_NEON  (3)
+
 # endif
 
 #endif

node_modules/@discordjs/opus/deps/opus/celt/arm/celt_fft_ne10.c

@@ -1,7 +1,7 @@
 /* Copyright (c) 2015 Xiph.Org Foundation
    Written by Viswanath Puttagunta */
 /**
-   @file celt_ne10_fft.c
+   @file celt_fft_ne10.c
    @brief ARM Neon optimizations for fft using NE10 library
  */
 
@@ -36,7 +36,6 @@
 #endif
 #endif
 
-#include <NE10_init.h>
 #include <NE10_dsp.h>
 #include "os_support.h"
 #include "kiss_fft.h"

node_modules/@discordjs/opus/deps/opus/celt/arm/celt_mdct_ne10.c

@@ -1,7 +1,7 @@
 /* Copyright (c) 2015 Xiph.Org Foundation
    Written by Viswanath Puttagunta */
 /**
-   @file celt_ne10_mdct.c
+   @file celt_mdct_ne10.c
    @brief ARM Neon optimizations for mdct using NE10 library
  */
 

node_modules/@discordjs/opus/deps/opus/celt/arm/celt_neon_intr.c

@@ -37,7 +37,66 @@
 #include <arm_neon.h>
 #include "../pitch.h"
 
-#if !defined(FIXED_POINT)
+#if defined(FIXED_POINT)
+void xcorr_kernel_neon_fixed(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len)
+{
+   int j;
+   int32x4_t a = vld1q_s32(sum);
+   /* Load y[0...3] */
+   /* This requires len>0 to always be valid (which we assert in the C code). */
+   int16x4_t y0 = vld1_s16(y);
+   y += 4;
+
+   for (j = 0; j + 8 <= len; j += 8)
+   {
+      /* Load x[0...7] */
+      int16x8_t xx = vld1q_s16(x);
+      int16x4_t x0 = vget_low_s16(xx);
+      int16x4_t x4 = vget_high_s16(xx);
+      /* Load y[4...11] */
+      int16x8_t yy = vld1q_s16(y);
+      int16x4_t y4 = vget_low_s16(yy);
+      int16x4_t y8 = vget_high_s16(yy);
+      int32x4_t a0 = vmlal_lane_s16(a, y0, x0, 0);
+      int32x4_t a1 = vmlal_lane_s16(a0, y4, x4, 0);
+
+      int16x4_t y1 = vext_s16(y0, y4, 1);
+      int16x4_t y5 = vext_s16(y4, y8, 1);
+      int32x4_t a2 = vmlal_lane_s16(a1, y1, x0, 1);
+      int32x4_t a3 = vmlal_lane_s16(a2, y5, x4, 1);
+
+      int16x4_t y2 = vext_s16(y0, y4, 2);
+      int16x4_t y6 = vext_s16(y4, y8, 2);
+      int32x4_t a4 = vmlal_lane_s16(a3, y2, x0, 2);
+      int32x4_t a5 = vmlal_lane_s16(a4, y6, x4, 2);
+
+      int16x4_t y3 = vext_s16(y0, y4, 3);
+      int16x4_t y7 = vext_s16(y4, y8, 3);
+      int32x4_t a6 = vmlal_lane_s16(a5, y3, x0, 3);
+      int32x4_t a7 = vmlal_lane_s16(a6, y7, x4, 3);
+
+      y0 = y8;
+      a = a7;
+      x += 8;
+      y += 8;
+   }
+
+   for (; j < len; j++)
+   {
+      int16x4_t x0 = vld1_dup_s16(x);  /* load next x */
+      int32x4_t a0 = vmlal_s16(a, y0, x0);
+
+      int16x4_t y4 = vld1_dup_s16(y);  /* load next y */
+      y0 = vext_s16(y0, y4, 1);
+      a = a0;
+      x++;
+      y++;
+   }
+
+   vst1q_s32(sum, a);
+}
+
+#else
 /*
  * Function: xcorr_kernel_neon_float
  * ---------------------------------
@@ -132,121 +191,21 @@ static void xcorr_kernel_neon_float(const float32_t *x, const float32_t *y,
    vst1q_f32(sum, SUMM);
 }
 
-/*
- * Function: xcorr_kernel_neon_float_process1
- * ---------------------------------
- * Computes single correlation values and stores in *sum
- */
-static void xcorr_kernel_neon_float_process1(const float32_t *x,
-      const float32_t *y, float32_t *sum, int len) {
-   float32x4_t XX[4];
-   float32x4_t YY[4];
-   float32x2_t XX_2;
-   float32x2_t YY_2;
-   float32x4_t SUMM;
-   float32x2_t SUMM_2[2];
-   const float32_t *xi = x;
-   const float32_t *yi = y;
-
-   SUMM = vdupq_n_f32(0);
-
-   /* Work on 16 values per iteration */
-   while (len >= 16) {
-      XX[0] = vld1q_f32(xi);
-      xi += 4;
-      XX[1] = vld1q_f32(xi);
-      xi += 4;
-      XX[2] = vld1q_f32(xi);
-      xi += 4;
-      XX[3] = vld1q_f32(xi);
-      xi += 4;
-
-      YY[0] = vld1q_f32(yi);
-      yi += 4;
-      YY[1] = vld1q_f32(yi);
-      yi += 4;
-      YY[2] = vld1q_f32(yi);
-      yi += 4;
-      YY[3] = vld1q_f32(yi);
-      yi += 4;
-
-      SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
-      SUMM = vmlaq_f32(SUMM, YY[1], XX[1]);
-      SUMM = vmlaq_f32(SUMM, YY[2], XX[2]);
-      SUMM = vmlaq_f32(SUMM, YY[3], XX[3]);
-      len -= 16;
-   }
-
-   /* Work on 8 values */
-   if (len >= 8) {
-      XX[0] = vld1q_f32(xi);
-      xi += 4;
-      XX[1] = vld1q_f32(xi);
-      xi += 4;
-
-      YY[0] = vld1q_f32(yi);
-      yi += 4;
-      YY[1] = vld1q_f32(yi);
-      yi += 4;
-
-      SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
-      SUMM = vmlaq_f32(SUMM, YY[1], XX[1]);
-      len -= 8;
-   }
-
-   /* Work on 4 values */
-   if (len >= 4) {
-      XX[0] = vld1q_f32(xi);
-      xi += 4;
-      YY[0] = vld1q_f32(yi);
-      yi += 4;
-      SUMM = vmlaq_f32(SUMM, YY[0], XX[0]);
-      len -= 4;
-   }
-
-   /* Start accumulating results */
-   SUMM_2[0] = vget_low_f32(SUMM);
-   if (len >= 2) {
-      /* While at it, consume 2 more values if available */
-      XX_2 = vld1_f32(xi);
-      xi += 2;
-      YY_2 = vld1_f32(yi);
-      yi += 2;
-      SUMM_2[0] = vmla_f32(SUMM_2[0], YY_2, XX_2);
-      len -= 2;
-   }
-   SUMM_2[1] = vget_high_f32(SUMM);
-   SUMM_2[0] = vadd_f32(SUMM_2[0], SUMM_2[1]);
-   SUMM_2[0] = vpadd_f32(SUMM_2[0], SUMM_2[0]);
-   /* Ok, now we have result accumulated in SUMM_2[0].0 */
-
-   if (len > 0) {
-      /* Case when you have one value left */
-      XX_2 = vld1_dup_f32(xi);
-      YY_2 = vld1_dup_f32(yi);
-      SUMM_2[0] = vmla_f32(SUMM_2[0], XX_2, YY_2);
-   }
-
-   vst1_lane_f32(sum, SUMM_2[0], 0);
-}
-
 void celt_pitch_xcorr_float_neon(const opus_val16 *_x, const opus_val16 *_y,
-                        opus_val32 *xcorr, int len, int max_pitch) {
+                        opus_val32 *xcorr, int len, int max_pitch, int arch) {
    int i;
+   (void)arch;
    celt_assert(max_pitch > 0);
-   celt_assert((((unsigned char *)_x-(unsigned char *)NULL)&3)==0);
+   celt_sig_assert((((unsigned char *)_x-(unsigned char *)NULL)&3)==0);
 
    for (i = 0; i < (max_pitch-3); i += 4) {
       xcorr_kernel_neon_float((const float32_t *)_x, (const float32_t *)_y+i,
             (float32_t *)xcorr+i, len);
    }
 
-   /* In case max_pitch isn't multiple of 4
-    * compute single correlation value per iteration
-    */
+   /* In case max_pitch isn't a multiple of 4, do non-unrolled version. */
    for (; i < max_pitch; i++) {
-      xcorr_kernel_neon_float_process1((const float32_t *)_x,
-            (const float32_t *)_y+i, (float32_t *)xcorr+i, len);
+      xcorr[i] = celt_inner_prod_neon(_x, _y+i, len);
    }
 }
 #endif

node_modules/@discordjs/opus/deps/opus/celt/arm/celt_pitch_xcorr_arm-gnu.S

@@ -44,7 +44,7 @@
  .if OPUS_ARM_MAY_HAVE_NEON
 
 @ Compute sum[k]=sum(x[j]*y[j+k],j=0...len-1), k=0...3
-; xcorr_kernel_neon: @ PROC
+	.type	xcorr_kernel_neon, %function; xcorr_kernel_neon: @ PROC
 xcorr_kernel_neon_start:
   @ input:
   @   r3     = int         len
@@ -156,8 +156,8 @@ xcorr_kernel_neon_process1:
 	.size xcorr_kernel_neon, .-xcorr_kernel_neon  @ ENDP
 
 @ opus_val32 celt_pitch_xcorr_neon(opus_val16 *_x, opus_val16 *_y,
-@  opus_val32 *xcorr, int len, int max_pitch)
-; celt_pitch_xcorr_neon: @ PROC
+@  opus_val32 *xcorr, int len, int max_pitch, int arch)
+	.type	celt_pitch_xcorr_neon, %function; celt_pitch_xcorr_neon: @ PROC
   @ input:
   @   r0  = opus_val16 *_x
   @   r1  = opus_val16 *_y
@@ -171,6 +171,8 @@ xcorr_kernel_neon_process1:
   @   r6  = int         max_pitch
   @   r12 = int         j
   @   q15 = int         maxcorr[4] (q15 is not used by xcorr_kernel_neon())
+  @ ignored:
+  @         int         arch
   STMFD        sp!, {r4-r6, lr}
   LDR          r6, [sp, #16]
   VMOV.S32     q15, #1
@@ -260,7 +262,7 @@ celt_pitch_xcorr_neon_done:
 
 @ This will get used on ARMv7 devices without NEON, so it has been optimized
 @ to take advantage of dual-issuing where possible.
-; xcorr_kernel_edsp: @ PROC
+	.type	xcorr_kernel_edsp, %function; xcorr_kernel_edsp: @ PROC
 xcorr_kernel_edsp_start:
   @ input:
   @   r3      = int         len
@@ -344,7 +346,7 @@ xcorr_kernel_edsp_done:
   LDMFD        sp!, {r2,r4,r5,pc}
 	.size xcorr_kernel_edsp, .-xcorr_kernel_edsp  @ ENDP
 
-; celt_pitch_xcorr_edsp: @ PROC
+	.type	celt_pitch_xcorr_edsp, %function; celt_pitch_xcorr_edsp: @ PROC
   @ input:
   @   r0  = opus_val16 *_x (must be 32-bit aligned)
   @   r1  = opus_val16 *_y (only needs to be 16-bit aligned)
@@ -361,6 +363,8 @@ xcorr_kernel_edsp_done:
   @   r9  = opus_val32  sum3
   @   r1  = int         max_pitch
   @   r12 = int         j
+  @ ignored:
+  @         int         arch
   STMFD        sp!, {r4-r11, lr}
   MOV          r5, r1
   LDR          r1, [sp, #36]

node_modules/@discordjs/opus/deps/opus/celt/arm/celt_pitch_xcorr_arm.s

@@ -153,7 +153,7 @@ xcorr_kernel_neon_process1
   ENDP
 
 ; opus_val32 celt_pitch_xcorr_neon(opus_val16 *_x, opus_val16 *_y,
-;  opus_val32 *xcorr, int len, int max_pitch)
+;  opus_val32 *xcorr, int len, int max_pitch, int arch)
 celt_pitch_xcorr_neon PROC
   ; input:
   ;   r0  = opus_val16 *_x
@@ -168,6 +168,8 @@ celt_pitch_xcorr_neon PROC
   ;   r6  = int         max_pitch
   ;   r12 = int         j
   ;   q15 = int         maxcorr[4] (q15 is not used by xcorr_kernel_neon())
+  ; ignored:
+  ;         int         arch
   STMFD        sp!, {r4-r6, lr}
   LDR          r6, [sp, #16]
   VMOV.S32     q15, #1
@@ -358,6 +360,8 @@ celt_pitch_xcorr_edsp PROC
   ;   r9  = opus_val32  sum3
   ;   r1  = int         max_pitch
   ;   r12 = int         j
+  ; ignored:
+  ;         int         arch
   STMFD        sp!, {r4-r11, lr}
   MOV          r5, r1
   LDR          r1, [sp, #36]

node_modules/@discordjs/opus/deps/opus/celt/arm/fft_arm.h

@@ -34,7 +34,6 @@
 #if !defined(FFT_ARM_H)
 #define FFT_ARM_H
 
-#include "config.h"
 #include "kiss_fft.h"
 
 #if defined(HAVE_ARM_NE10)

node_modules/@discordjs/opus/deps/opus/celt/arm/fixed_arm64.h

@@ -1,5 +1,4 @@
-/* Copyright (c) 2008-2011 Octasic Inc.
-   Written by Jean-Marc Valin */
+/* Copyright (C) 2015 Vidyo */
 /*
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
@@ -15,8 +14,8 @@
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
-   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
@@ -25,19 +24,12 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#ifndef _MLP_H_
-#define _MLP_H_
+#ifndef FIXED_ARM64_H
+#define FIXED_ARM64_H
 
-#include "arch.h"
+#include <arm_neon.h>
 
-typedef struct {
-    int layers;
-    const int *topo;
-    const float *weights;
-} MLP;
+#undef SIG2WORD16
+#define SIG2WORD16(x) (vqmovns_s32(PSHR32((x), SIG_SHIFT)))
 
-extern const MLP net;
-
-void mlp_process(const MLP *m, const float *in, float *out);
-
-#endif /* _MLP_H_ */
+#endif

node_modules/@discordjs/opus/deps/opus/celt/arm/fixed_armv4.h

@@ -37,7 +37,7 @@ static OPUS_INLINE opus_val32 MULT16_32_Q16_armv4(opus_val16 a, opus_val32 b)
       "#MULT16_32_Q16\n\t"
       "smull %0, %1, %2, %3\n\t"
       : "=&r"(rd_lo), "=&r"(rd_hi)
-      : "%r"(b),"r"(a<<16)
+      : "%r"(b),"r"(SHL32(a,16))
   );
   return rd_hi;
 }
@@ -54,10 +54,10 @@ static OPUS_INLINE opus_val32 MULT16_32_Q15_armv4(opus_val16 a, opus_val32 b)
       "#MULT16_32_Q15\n\t"
       "smull %0, %1, %2, %3\n\t"
       : "=&r"(rd_lo), "=&r"(rd_hi)
-      : "%r"(b), "r"(a<<16)
+      : "%r"(b), "r"(SHL32(a,16))
   );
   /*We intentionally don't OR in the high bit of rd_lo for speed.*/
-  return rd_hi<<1;
+  return SHL32(rd_hi,1);
 }
 #define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv4(a, b))
 

node_modules/@discordjs/opus/deps/opus/celt/arm/fixed_armv5e.h

@@ -59,7 +59,7 @@ static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
       : "=r"(res)
       : "r"(b), "r"(a)
   );
-  return res<<1;
+  return SHL32(res,1);
 }
 #define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
 
@@ -76,7 +76,7 @@ static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
       "#MAC16_32_Q15\n\t"
       "smlawb %0, %1, %2, %3;\n"
       : "=r"(res)
-      : "r"(b<<1), "r"(a), "r"(c)
+      : "r"(SHL32(b,1)), "r"(a), "r"(c)
   );
   return res;
 }

node_modules/@discordjs/opus/deps/opus/celt/arm/mdct_arm.h

@@ -33,7 +33,6 @@
 #if !defined(MDCT_ARM_H)
 #define MDCT_ARM_H
 
-#include "config.h"
 #include "mdct.h"
 
 #if defined(HAVE_ARM_NE10)

node_modules/@discordjs/opus/deps/opus/celt/arm/pitch_arm.h

@@ -0,0 +1,160 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#if !defined(PITCH_ARM_H)
+# define PITCH_ARM_H
+
+# include "armcpu.h"
+
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+opus_val32 celt_inner_prod_neon(const opus_val16 *x, const opus_val16 *y, int N);
+void dual_inner_prod_neon(const opus_val16 *x, const opus_val16 *y01,
+        const opus_val16 *y02, int N, opus_val32 *xy1, opus_val32 *xy2);
+
+#  if !defined(OPUS_HAVE_RTCD) && defined(OPUS_ARM_PRESUME_NEON)
+#   define OVERRIDE_CELT_INNER_PROD (1)
+#   define OVERRIDE_DUAL_INNER_PROD (1)
+#   define celt_inner_prod(x, y, N, arch) ((void)(arch), PRESUME_NEON(celt_inner_prod)(x, y, N))
+#   define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) ((void)(arch), PRESUME_NEON(dual_inner_prod)(x, y01, y02, N, xy1, xy2))
+#  endif
+# endif
+
+# if !defined(OVERRIDE_CELT_INNER_PROD)
+#  if defined(OPUS_HAVE_RTCD) && (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+extern opus_val32 (*const CELT_INNER_PROD_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *x, const opus_val16 *y, int N);
+#   define OVERRIDE_CELT_INNER_PROD (1)
+#   define celt_inner_prod(x, y, N, arch) ((*CELT_INNER_PROD_IMPL[(arch)&OPUS_ARCHMASK])(x, y, N))
+#  elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+#   define OVERRIDE_CELT_INNER_PROD (1)
+#   define celt_inner_prod(x, y, N, arch) ((void)(arch), celt_inner_prod_neon(x, y, N))
+#  endif
+# endif
+
+# if !defined(OVERRIDE_DUAL_INNER_PROD)
+#  if defined(OPUS_HAVE_RTCD) && (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+extern void (*const DUAL_INNER_PROD_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *x,
+        const opus_val16 *y01, const opus_val16 *y02, int N, opus_val32 *xy1, opus_val32 *xy2);
+#   define OVERRIDE_DUAL_INNER_PROD (1)
+#   define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) ((*DUAL_INNER_PROD_IMPL[(arch)&OPUS_ARCHMASK])(x, y01, y02, N, xy1, xy2))
+#  elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+#   define OVERRIDE_DUAL_INNER_PROD (1)
+#   define dual_inner_prod(x, y01, y02, N, xy1, xy2, arch) ((void)(arch), dual_inner_prod_neon(x, y01, y02, N, xy1, xy2))
+#  endif
+# endif
+
+# if defined(FIXED_POINT)
+
+#  if defined(OPUS_ARM_MAY_HAVE_NEON)
+opus_val32 celt_pitch_xcorr_neon(const opus_val16 *_x, const opus_val16 *_y,
+    opus_val32 *xcorr, int len, int max_pitch, int arch);
+#  endif
+
+#  if defined(OPUS_ARM_MAY_HAVE_MEDIA)
+#   define celt_pitch_xcorr_media MAY_HAVE_EDSP(celt_pitch_xcorr)
+#  endif
+
+#  if defined(OPUS_ARM_MAY_HAVE_EDSP)
+opus_val32 celt_pitch_xcorr_edsp(const opus_val16 *_x, const opus_val16 *_y,
+    opus_val32 *xcorr, int len, int max_pitch, int arch);
+#  endif
+
+#  if defined(OPUS_HAVE_RTCD) && \
+    ((defined(OPUS_ARM_MAY_HAVE_NEON) && !defined(OPUS_ARM_PRESUME_NEON)) || \
+     (defined(OPUS_ARM_MAY_HAVE_MEDIA) && !defined(OPUS_ARM_PRESUME_MEDIA)) || \
+     (defined(OPUS_ARM_MAY_HAVE_EDSP) && !defined(OPUS_ARM_PRESUME_EDSP)))
+extern opus_val32
+(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+      const opus_val16 *, opus_val32 *, int, int, int);
+#   define OVERRIDE_PITCH_XCORR (1)
+#   define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+  ((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
+        xcorr, len, max_pitch, arch))
+
+#  elif defined(OPUS_ARM_PRESUME_EDSP) || \
+    defined(OPUS_ARM_PRESUME_MEDIA) || \
+    defined(OPUS_ARM_PRESUME_NEON)
+#   define OVERRIDE_PITCH_XCORR (1)
+#   define celt_pitch_xcorr (PRESUME_NEON(celt_pitch_xcorr))
+
+#  endif
+
+#  if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+void xcorr_kernel_neon_fixed(
+                    const opus_val16 *x,
+                    const opus_val16 *y,
+                    opus_val32       sum[4],
+                    int              len);
+#  endif
+
+#  if defined(OPUS_HAVE_RTCD) && \
+    (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+
+extern void (*const XCORR_KERNEL_IMPL[OPUS_ARCHMASK + 1])(
+                    const opus_val16 *x,
+                    const opus_val16 *y,
+                    opus_val32       sum[4],
+                    int              len);
+
+#   define OVERRIDE_XCORR_KERNEL (1)
+#   define xcorr_kernel(x, y, sum, len, arch) \
+     ((*XCORR_KERNEL_IMPL[(arch) & OPUS_ARCHMASK])(x, y, sum, len))
+
+#  elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+#   define OVERRIDE_XCORR_KERNEL (1)
+#   define xcorr_kernel(x, y, sum, len, arch) \
+      ((void)arch, xcorr_kernel_neon_fixed(x, y, sum, len))
+
+#  endif
+
+#else /* Start !FIXED_POINT */
+/* Float case */
+#if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+void celt_pitch_xcorr_float_neon(const opus_val16 *_x, const opus_val16 *_y,
+                                 opus_val32 *xcorr, int len, int max_pitch, int arch);
+#endif
+
+#  if defined(OPUS_HAVE_RTCD) && \
+    (defined(OPUS_ARM_MAY_HAVE_NEON_INTR) && !defined(OPUS_ARM_PRESUME_NEON_INTR))
+extern void
+(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
+      const opus_val16 *, opus_val32 *, int, int, int);
+
+#  define OVERRIDE_PITCH_XCORR (1)
+#  define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
+  ((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
+        xcorr, len, max_pitch, arch))
+
+#  elif defined(OPUS_ARM_PRESUME_NEON_INTR)
+
+#   define OVERRIDE_PITCH_XCORR (1)
+#   define celt_pitch_xcorr celt_pitch_xcorr_float_neon
+
+#  endif
+
+#endif /* end !FIXED_POINT */
+
+#endif

node_modules/@discordjs/opus/deps/opus/celt/arm/pitch_neon_intr.c

@@ -0,0 +1,290 @@
+/***********************************************************************
+Copyright (c) 2017 Google Inc.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <arm_neon.h>
+#include "pitch.h"
+
+#ifdef FIXED_POINT
+
+opus_val32 celt_inner_prod_neon(const opus_val16 *x, const opus_val16 *y, int N)
+{
+    int i;
+    opus_val32 xy;
+    int16x8_t x_s16x8, y_s16x8;
+    int32x4_t xy_s32x4 = vdupq_n_s32(0);
+    int64x2_t xy_s64x2;
+    int64x1_t xy_s64x1;
+
+    for (i = 0; i < N - 7; i += 8) {
+        x_s16x8  = vld1q_s16(&x[i]);
+        y_s16x8  = vld1q_s16(&y[i]);
+        xy_s32x4 = vmlal_s16(xy_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y_s16x8));
+        xy_s32x4 = vmlal_s16(xy_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y_s16x8));
+    }
+
+    if (N - i >= 4) {
+        const int16x4_t x_s16x4 = vld1_s16(&x[i]);
+        const int16x4_t y_s16x4 = vld1_s16(&y[i]);
+        xy_s32x4 = vmlal_s16(xy_s32x4, x_s16x4, y_s16x4);
+        i += 4;
+    }
+
+    xy_s64x2 = vpaddlq_s32(xy_s32x4);
+    xy_s64x1 = vadd_s64(vget_low_s64(xy_s64x2), vget_high_s64(xy_s64x2));
+    xy       = vget_lane_s32(vreinterpret_s32_s64(xy_s64x1), 0);
+
+    for (; i < N; i++) {
+        xy = MAC16_16(xy, x[i], y[i]);
+    }
+
+#ifdef OPUS_CHECK_ASM
+    celt_assert(celt_inner_prod_c(x, y, N) == xy);
+#endif
+
+    return xy;
+}
+
+void dual_inner_prod_neon(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+        int N, opus_val32 *xy1, opus_val32 *xy2)
+{
+    int i;
+    opus_val32 xy01, xy02;
+    int16x8_t x_s16x8, y01_s16x8, y02_s16x8;
+    int32x4_t xy01_s32x4 = vdupq_n_s32(0);
+    int32x4_t xy02_s32x4 = vdupq_n_s32(0);
+    int64x2_t xy01_s64x2, xy02_s64x2;
+    int64x1_t xy01_s64x1, xy02_s64x1;
+
+    for (i = 0; i < N - 7; i += 8) {
+        x_s16x8    = vld1q_s16(&x[i]);
+        y01_s16x8  = vld1q_s16(&y01[i]);
+        y02_s16x8  = vld1q_s16(&y02[i]);
+        xy01_s32x4 = vmlal_s16(xy01_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y01_s16x8));
+        xy02_s32x4 = vmlal_s16(xy02_s32x4, vget_low_s16 (x_s16x8), vget_low_s16 (y02_s16x8));
+        xy01_s32x4 = vmlal_s16(xy01_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y01_s16x8));
+        xy02_s32x4 = vmlal_s16(xy02_s32x4, vget_high_s16(x_s16x8), vget_high_s16(y02_s16x8));
+    }
+
+    if (N - i >= 4) {
+        const int16x4_t x_s16x4   = vld1_s16(&x[i]);
+        const int16x4_t y01_s16x4 = vld1_s16(&y01[i]);
+        const int16x4_t y02_s16x4 = vld1_s16(&y02[i]);
+        xy01_s32x4 = vmlal_s16(xy01_s32x4, x_s16x4, y01_s16x4);
+        xy02_s32x4 = vmlal_s16(xy02_s32x4, x_s16x4, y02_s16x4);
+        i += 4;
+    }
+
+    xy01_s64x2 = vpaddlq_s32(xy01_s32x4);
+    xy02_s64x2 = vpaddlq_s32(xy02_s32x4);
+    xy01_s64x1 = vadd_s64(vget_low_s64(xy01_s64x2), vget_high_s64(xy01_s64x2));
+    xy02_s64x1 = vadd_s64(vget_low_s64(xy02_s64x2), vget_high_s64(xy02_s64x2));
+    xy01       = vget_lane_s32(vreinterpret_s32_s64(xy01_s64x1), 0);
+    xy02       = vget_lane_s32(vreinterpret_s32_s64(xy02_s64x1), 0);
+
+    for (; i < N; i++) {
+        xy01 = MAC16_16(xy01, x[i], y01[i]);
+        xy02 = MAC16_16(xy02, x[i], y02[i]);
+    }
+    *xy1 = xy01;
+    *xy2 = xy02;
+
+#ifdef OPUS_CHECK_ASM
+    {
+        opus_val32 xy1_c, xy2_c;
+        dual_inner_prod_c(x, y01, y02, N, &xy1_c, &xy2_c);
+        celt_assert(xy1_c == *xy1);
+        celt_assert(xy2_c == *xy2);
+    }
+#endif
+}
+
+#else /* !FIXED_POINT */
+
+/* ========================================================================== */
+
+#ifdef OPUS_CHECK_ASM
+
+/* This part of code simulates floating-point NEON operations. */
+
+/* celt_inner_prod_neon_float_c_simulation() simulates the floating-point   */
+/* operations of celt_inner_prod_neon(), and both functions should have bit */
+/* exact output.                                                            */
+static opus_val32 celt_inner_prod_neon_float_c_simulation(const opus_val16 *x, const opus_val16 *y, int N)
+{
+   int i;
+   opus_val32 xy, xy0 = 0, xy1 = 0, xy2 = 0, xy3 = 0;
+   for (i = 0; i < N - 3; i += 4) {
+      xy0 = MAC16_16(xy0, x[i + 0], y[i + 0]);
+      xy1 = MAC16_16(xy1, x[i + 1], y[i + 1]);
+      xy2 = MAC16_16(xy2, x[i + 2], y[i + 2]);
+      xy3 = MAC16_16(xy3, x[i + 3], y[i + 3]);
+   }
+   xy0 += xy2;
+   xy1 += xy3;
+   xy = xy0 + xy1;
+   for (; i < N; i++) {
+      xy = MAC16_16(xy, x[i], y[i]);
+   }
+   return xy;
+}
+
+/* dual_inner_prod_neon_float_c_simulation() simulates the floating-point   */
+/* operations of dual_inner_prod_neon(), and both functions should have bit */
+/* exact output.                                                            */
+static void dual_inner_prod_neon_float_c_simulation(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+      int N, opus_val32 *xy1, opus_val32 *xy2)
+{
+   int i;
+   opus_val32 xy01, xy02, xy01_0 = 0, xy01_1 = 0, xy01_2 = 0, xy01_3 = 0, xy02_0 = 0, xy02_1 = 0, xy02_2 = 0, xy02_3 = 0;
+   for (i = 0; i < N - 3; i += 4) {
+      xy01_0 = MAC16_16(xy01_0, x[i + 0], y01[i + 0]);
+      xy01_1 = MAC16_16(xy01_1, x[i + 1], y01[i + 1]);
+      xy01_2 = MAC16_16(xy01_2, x[i + 2], y01[i + 2]);
+      xy01_3 = MAC16_16(xy01_3, x[i + 3], y01[i + 3]);
+      xy02_0 = MAC16_16(xy02_0, x[i + 0], y02[i + 0]);
+      xy02_1 = MAC16_16(xy02_1, x[i + 1], y02[i + 1]);
+      xy02_2 = MAC16_16(xy02_2, x[i + 2], y02[i + 2]);
+      xy02_3 = MAC16_16(xy02_3, x[i + 3], y02[i + 3]);
+   }
+   xy01_0 += xy01_2;
+   xy02_0 += xy02_2;
+   xy01_1 += xy01_3;
+   xy02_1 += xy02_3;
+   xy01 = xy01_0 + xy01_1;
+   xy02 = xy02_0 + xy02_1;
+   for (; i < N; i++) {
+      xy01 = MAC16_16(xy01, x[i], y01[i]);
+      xy02 = MAC16_16(xy02, x[i], y02[i]);
+   }
+   *xy1 = xy01;
+   *xy2 = xy02;
+}
+
+#endif /* OPUS_CHECK_ASM */
+
+/* ========================================================================== */
+
+opus_val32 celt_inner_prod_neon(const opus_val16 *x, const opus_val16 *y, int N)
+{
+    int i;
+    opus_val32 xy;
+    float32x4_t xy_f32x4 = vdupq_n_f32(0);
+    float32x2_t xy_f32x2;
+
+    for (i = 0; i < N - 7; i += 8) {
+        float32x4_t x_f32x4, y_f32x4;
+        x_f32x4  = vld1q_f32(&x[i]);
+        y_f32x4  = vld1q_f32(&y[i]);
+        xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
+        x_f32x4  = vld1q_f32(&x[i + 4]);
+        y_f32x4  = vld1q_f32(&y[i + 4]);
+        xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
+    }
+
+    if (N - i >= 4) {
+        const float32x4_t x_f32x4 = vld1q_f32(&x[i]);
+        const float32x4_t y_f32x4 = vld1q_f32(&y[i]);
+        xy_f32x4 = vmlaq_f32(xy_f32x4, x_f32x4, y_f32x4);
+        i += 4;
+    }
+
+    xy_f32x2 = vadd_f32(vget_low_f32(xy_f32x4), vget_high_f32(xy_f32x4));
+    xy_f32x2 = vpadd_f32(xy_f32x2, xy_f32x2);
+    xy       = vget_lane_f32(xy_f32x2, 0);
+
+    for (; i < N; i++) {
+        xy = MAC16_16(xy, x[i], y[i]);
+    }
+
+#ifdef OPUS_CHECK_ASM
+    celt_assert(ABS32(celt_inner_prod_neon_float_c_simulation(x, y, N) - xy) <= VERY_SMALL);
+#endif
+
+    return xy;
+}
+
+void dual_inner_prod_neon(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+        int N, opus_val32 *xy1, opus_val32 *xy2)
+{
+    int i;
+    opus_val32 xy01, xy02;
+    float32x4_t xy01_f32x4 = vdupq_n_f32(0);
+    float32x4_t xy02_f32x4 = vdupq_n_f32(0);
+    float32x2_t xy01_f32x2, xy02_f32x2;
+
+    for (i = 0; i < N - 7; i += 8) {
+        float32x4_t x_f32x4, y01_f32x4, y02_f32x4;
+        x_f32x4    = vld1q_f32(&x[i]);
+        y01_f32x4  = vld1q_f32(&y01[i]);
+        y02_f32x4  = vld1q_f32(&y02[i]);
+        xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
+        xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
+        x_f32x4    = vld1q_f32(&x[i + 4]);
+        y01_f32x4  = vld1q_f32(&y01[i + 4]);
+        y02_f32x4  = vld1q_f32(&y02[i + 4]);
+        xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
+        xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
+    }
+
+    if (N - i >= 4) {
+        const float32x4_t x_f32x4   = vld1q_f32(&x[i]);
+        const float32x4_t y01_f32x4 = vld1q_f32(&y01[i]);
+        const float32x4_t y02_f32x4 = vld1q_f32(&y02[i]);
+        xy01_f32x4 = vmlaq_f32(xy01_f32x4, x_f32x4, y01_f32x4);
+        xy02_f32x4 = vmlaq_f32(xy02_f32x4, x_f32x4, y02_f32x4);
+        i += 4;
+    }
+
+    xy01_f32x2 = vadd_f32(vget_low_f32(xy01_f32x4), vget_high_f32(xy01_f32x4));
+    xy02_f32x2 = vadd_f32(vget_low_f32(xy02_f32x4), vget_high_f32(xy02_f32x4));
+    xy01_f32x2 = vpadd_f32(xy01_f32x2, xy01_f32x2);
+    xy02_f32x2 = vpadd_f32(xy02_f32x2, xy02_f32x2);
+    xy01       = vget_lane_f32(xy01_f32x2, 0);
+    xy02       = vget_lane_f32(xy02_f32x2, 0);
+
+    for (; i < N; i++) {
+        xy01 = MAC16_16(xy01, x[i], y01[i]);
+        xy02 = MAC16_16(xy02, x[i], y02[i]);
+    }
+    *xy1 = xy01;
+    *xy2 = xy02;
+
+#ifdef OPUS_CHECK_ASM
+    {
+        opus_val32 xy1_c, xy2_c;
+        dual_inner_prod_neon_float_c_simulation(x, y01, y02, N, &xy1_c, &xy2_c);
+        celt_assert(ABS32(xy1_c - *xy1) <= VERY_SMALL);
+        celt_assert(ABS32(xy2_c - *xy2) <= VERY_SMALL);
+    }
+#endif
+}
+
+#endif /* FIXED_POINT */

node_modules/@discordjs/opus/deps/opus/celt/bands.c

@@ -65,19 +65,19 @@ opus_uint32 celt_lcg_rand(opus_uint32 seed)
 
 /* This is a cos() approximation designed to be bit-exact on any platform. Bit exactness
    with this approximation is important because it has an impact on the bit allocation */
-static opus_int16 bitexact_cos(opus_int16 x)
+opus_int16 bitexact_cos(opus_int16 x)
 {
    opus_int32 tmp;
    opus_int16 x2;
    tmp = (4096+((opus_int32)(x)*(x)))>>13;
-   celt_assert(tmp<=32767);
+   celt_sig_assert(tmp<=32767);
    x2 = tmp;
    x2 = (32767-x2) + FRAC_MUL16(x2, (-7651 + FRAC_MUL16(x2, (8277 + FRAC_MUL16(-626, x2)))));
-   celt_assert(x2<=32766);
+   celt_sig_assert(x2<=32766);
    return 1+x2;
 }
 
-static int bitexact_log2tan(int isin,int icos)
+int bitexact_log2tan(int isin,int icos)
 {
    int lc;
    int ls;
@@ -92,10 +92,11 @@ static int bitexact_log2tan(int isin,int icos)
 
 #ifdef FIXED_POINT
 /* Compute the amplitude (sqrt energy) in each of the bands */
-void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM)
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM, int arch)
 {
    int i, c, N;
    const opus_int16 *eBands = m->eBands;
+   (void)arch;
    N = m->shortMdctSize<<LM;
    c=0; do {
       for (i=0;i<end;i++)
@@ -155,7 +156,7 @@ void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, cel
 
 #else /* FIXED_POINT */
 /* Compute the amplitude (sqrt energy) in each of the bands */
-void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM)
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM, int arch)
 {
    int i, c, N;
    const opus_int16 *eBands = m->eBands;
@@ -164,7 +165,7 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *band
       for (i=0;i<end;i++)
       {
          opus_val32 sum;
-         sum = 1e-27f + celt_inner_prod_c(&X[c*N+(eBands[i]<<LM)], &X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM);
+         sum = 1e-27f + celt_inner_prod(&X[c*N+(eBands[i]<<LM)], &X[c*N+(eBands[i]<<LM)], (eBands[i+1]-eBands[i])<<LM, arch);
          bandE[i+c*m->nbEBands] = celt_sqrt(sum);
          /*printf ("%f ", bandE[i+c*m->nbEBands]);*/
       }
@@ -224,9 +225,9 @@ void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
 #endif
       j=M*eBands[i];
       band_end = M*eBands[i+1];
-      lg = ADD16(bandLogE[i], SHL16((opus_val16)eMeans[i],6));
+      lg = SATURATE16(ADD32(bandLogE[i], SHL32((opus_val32)eMeans[i],6)));
 #ifndef FIXED_POINT
-      g = celt_exp2(lg);
+      g = celt_exp2(MIN32(32.f, lg));
 #else
       /* Handle the integer part of the log energy */
       shift = 16-(lg>>DB_SHIFT);
@@ -241,12 +242,12 @@ void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
       /* Handle extreme gains with negative shift. */
       if (shift<0)
       {
-         /* For shift < -2 we'd be likely to overflow, so we're capping
-               the gain here. This shouldn't happen unless the bitstream is
-               already corrupted. */
-         if (shift < -2)
+         /* For shift <= -2 and g > 16384 we'd be likely to overflow, so we're
+            capping the gain here, which is equivalent to a cap of 18 on lg.
+            This shouldn't trigger unless the bitstream is already corrupted. */
+         if (shift <= -2)
          {
-            g = 32767;
+            g = 16384;
             shift = -2;
          }
          do {
@@ -281,7 +282,7 @@ void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_mas
 
       N0 = m->eBands[i+1]-m->eBands[i];
       /* depth in 1/8 bits */
-      celt_assert(pulses[i]>=0);
+      celt_sig_assert(pulses[i]>=0);
       depth = celt_udiv(1+pulses[i], (m->eBands[i+1]-m->eBands[i]))>>LM;
 
 #ifdef FIXED_POINT
@@ -360,6 +361,30 @@ void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_mas
    }
 }
 
+/* Compute the weights to use for optimizing normalized distortion across
+   channels. We use the amplitude to weight square distortion, which means
+   that we use the square root of the value we would have been using if we
+   wanted to minimize the MSE in the non-normalized domain. This roughly
+   corresponds to some quick-and-dirty perceptual experiments I ran to
+   measure inter-aural masking (there doesn't seem to be any published data
+   on the topic). */
+static void compute_channel_weights(celt_ener Ex, celt_ener Ey, opus_val16 w[2])
+{
+   celt_ener minE;
+#ifdef FIXED_POINT
+   int shift;
+#endif
+   minE = MIN32(Ex, Ey);
+   /* Adjustment to make the weights a bit more conservative. */
+   Ex = ADD32(Ex, minE/3);
+   Ey = ADD32(Ey, minE/3);
+#ifdef FIXED_POINT
+   shift = celt_ilog2(EPSILON+MAX32(Ex, Ey))-14;
+#endif
+   w[0] = VSHR32(Ex, shift);
+   w[1] = VSHR32(Ey, shift);
+}
+
 static void intensity_stereo(const CELTMode *m, celt_norm * OPUS_RESTRICT X, const celt_norm * OPUS_RESTRICT Y, const celt_ener *bandE, int bandID, int N)
 {
    int i = bandID;
@@ -414,7 +439,7 @@ static void stereo_merge(celt_norm * OPUS_RESTRICT X, celt_norm * OPUS_RESTRICT
    /* Compensating for the mid normalization */
    xp = MULT16_32_Q15(mid, xp);
    /* mid and side are in Q15, not Q14 like X and Y */
-   mid2 = SHR32(mid, 1);
+   mid2 = SHR16(mid, 1);
    El = MULT16_16(mid2, mid2) + side - 2*xp;
    Er = MULT16_16(mid2, mid2) + side + 2*xp;
    if (Er < QCONST32(6e-4f, 28) || El < QCONST32(6e-4f, 28))
@@ -453,7 +478,7 @@ static void stereo_merge(celt_norm * OPUS_RESTRICT X, celt_norm * OPUS_RESTRICT
 /* Decide whether we should spread the pulses in the current frame */
 int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
       int last_decision, int *hf_average, int *tapset_decision, int update_hf,
-      int end, int C, int M)
+      int end, int C, int M, const int *spread_weight)
 {
    int i, c, N0;
    int sum = 0, nbBands=0;
@@ -494,8 +519,8 @@ int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
          if (i>m->nbEBands-4)
             hf_sum += celt_udiv(32*(tcount[1]+tcount[0]), N);
          tmp = (2*tcount[2] >= N) + (2*tcount[1] >= N) + (2*tcount[0] >= N);
-         sum += tmp*256;
-         nbBands++;
+         sum += tmp*spread_weight[i];
+         nbBands+=spread_weight[i];
       }
    } while (++c<C);
 
@@ -519,7 +544,7 @@ int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
    /*printf("%d %d %d\n", hf_sum, *hf_average, *tapset_decision);*/
    celt_assert(nbBands>0); /* end has to be non-zero */
    celt_assert(sum>=0);
-   sum = celt_udiv(sum, nbBands);
+   sum = celt_udiv((opus_int32)sum<<8, nbBands);
    /* Recursive averaging */
    sum = (sum+*average)>>1;
    *average = sum;
@@ -647,6 +672,7 @@ static int compute_qn(int N, int b, int offset, int pulse_cap, int stereo)
 
 struct band_ctx {
    int encode;
+   int resynth;
    const CELTMode *m;
    int i;
    int intensity;
@@ -657,6 +683,9 @@ struct band_ctx {
    const celt_ener *bandE;
    opus_uint32 seed;
    int arch;
+   int theta_round;
+   int disable_inv;
+   int avoid_split_noise;
 };
 
 struct split_ctx {
@@ -714,8 +743,35 @@ static void compute_theta(struct band_ctx *ctx, struct split_ctx *sctx,
    if (qn!=1)
    {
       if (encode)
-         itheta = (itheta*qn+8192)>>14;
-
+      {
+         if (!stereo || ctx->theta_round == 0)
+         {
+            itheta = (itheta*(opus_int32)qn+8192)>>14;
+            if (!stereo && ctx->avoid_split_noise && itheta > 0 && itheta < qn)
+            {
+               /* Check if the selected value of theta will cause the bit allocation
+                  to inject noise on one side. If so, make sure the energy of that side
+                  is zero. */
+               int unquantized = celt_udiv((opus_int32)itheta*16384, qn);
+               imid = bitexact_cos((opus_int16)unquantized);
+               iside = bitexact_cos((opus_int16)(16384-unquantized));
+               delta = FRAC_MUL16((N-1)<<7,bitexact_log2tan(iside,imid));
+               if (delta > *b)
+                  itheta = qn;
+               else if (delta < -*b)
+                  itheta = 0;
+            }
+         } else {
+            int down;
+            /* Bias quantization towards itheta=0 and itheta=16384. */
+            int bias = itheta > 8192 ? 32767/qn : -32767/qn;
+            down = IMIN(qn-1, IMAX(0, (itheta*(opus_int32)qn + bias)>>14));
+            if (ctx->theta_round < 0)
+               itheta = down;
+            else
+               itheta = down+1;
+         }
+      }
       /* Entropy coding of the angle. We use a uniform pdf for the
          time split, a step for stereo, and a triangular one for the rest. */
       if (stereo && N>2)
@@ -793,7 +849,7 @@ static void compute_theta(struct band_ctx *ctx, struct split_ctx *sctx,
    } else if (stereo) {
       if (encode)
       {
-         inv = itheta > 8192;
+         inv = itheta > 8192 && !ctx->disable_inv;
          if (inv)
          {
             int j;
@@ -810,6 +866,9 @@ static void compute_theta(struct band_ctx *ctx, struct split_ctx *sctx,
             inv = ec_dec_bit_logp(ec, 2);
       } else
          inv = 0;
+      /* inv flag override to avoid problems with downmixing. */
+      if (ctx->disable_inv)
+         inv = 0;
       itheta = 0;
    }
    qalloc = ec_tell_frac(ec) - tell;
@@ -845,11 +904,6 @@ static void compute_theta(struct band_ctx *ctx, struct split_ctx *sctx,
 static unsigned quant_band_n1(struct band_ctx *ctx, celt_norm *X, celt_norm *Y, int b,
       celt_norm *lowband_out)
 {
-#ifdef RESYNTH
-   int resynth = 1;
-#else
-   int resynth = !ctx->encode;
-#endif
    int c;
    int stereo;
    celt_norm *x = X;
@@ -874,7 +928,7 @@ static unsigned quant_band_n1(struct band_ctx *ctx, celt_norm *X, celt_norm *Y,
          ctx->remaining_bits -= 1<<BITRES;
          b-=1<<BITRES;
       }
-      if (resynth)
+      if (ctx->resynth)
          x[0] = sign ? -NORM_SCALING : NORM_SCALING;
       x = Y;
    } while (++c<1+stereo);
@@ -899,11 +953,6 @@ static unsigned quant_partition(struct band_ctx *ctx, celt_norm *X,
    int B0=B;
    opus_val16 mid=0, side=0;
    unsigned cm=0;
-#ifdef RESYNTH
-   int resynth = 1;
-#else
-   int resynth = !ctx->encode;
-#endif
    celt_norm *Y=NULL;
    int encode;
    const CELTMode *m;
@@ -935,8 +984,7 @@ static unsigned quant_partition(struct band_ctx *ctx, celt_norm *X,
          fill = (fill&1)|(fill<<1);
       B = (B+1)>>1;
 
-      compute_theta(ctx, &sctx, X, Y, N, &b, B, B0,
-            LM, 0, &fill);
+      compute_theta(ctx, &sctx, X, Y, N, &b, B, B0, LM, 0, &fill);
       imid = sctx.imid;
       iside = sctx.iside;
       delta = sctx.delta;
@@ -970,24 +1018,20 @@ static unsigned quant_partition(struct band_ctx *ctx, celt_norm *X,
       rebalance = ctx->remaining_bits;
       if (mbits >= sbits)
       {
-         cm = quant_partition(ctx, X, N, mbits, B,
-               lowband, LM,
+         cm = quant_partition(ctx, X, N, mbits, B, lowband, LM,
                MULT16_16_P15(gain,mid), fill);
          rebalance = mbits - (rebalance-ctx->remaining_bits);
          if (rebalance > 3<<BITRES && itheta!=0)
             sbits += rebalance - (3<<BITRES);
-         cm |= quant_partition(ctx, Y, N, sbits, B,
-               next_lowband2, LM,
+         cm |= quant_partition(ctx, Y, N, sbits, B, next_lowband2, LM,
                MULT16_16_P15(gain,side), fill>>B)<<(B0>>1);
       } else {
-         cm = quant_partition(ctx, Y, N, sbits, B,
-               next_lowband2, LM,
+         cm = quant_partition(ctx, Y, N, sbits, B, next_lowband2, LM,
                MULT16_16_P15(gain,side), fill>>B)<<(B0>>1);
          rebalance = sbits - (rebalance-ctx->remaining_bits);
          if (rebalance > 3<<BITRES && itheta!=16384)
             mbits += rebalance - (3<<BITRES);
-         cm |= quant_partition(ctx, X, N, mbits, B,
-               lowband, LM,
+         cm |= quant_partition(ctx, X, N, mbits, B, lowband, LM,
                MULT16_16_P15(gain,mid), fill);
       }
    } else {
@@ -1012,18 +1056,14 @@ static unsigned quant_partition(struct band_ctx *ctx, celt_norm *X,
          /* Finally do the actual quantization */
          if (encode)
          {
-            cm = alg_quant(X, N, K, spread, B, ec
-#ifdef RESYNTH
-                 , gain
-#endif
-                 );
+            cm = alg_quant(X, N, K, spread, B, ec, gain, ctx->resynth, ctx->arch);
          } else {
             cm = alg_unquant(X, N, K, spread, B, ec, gain);
          }
       } else {
          /* If there's no pulse, fill the band anyway */
          int j;
-         if (resynth)
+         if (ctx->resynth)
          {
             unsigned cm_mask;
             /* B can be as large as 16, so this shift might overflow an int on a
@@ -1080,11 +1120,6 @@ static unsigned quant_band(struct band_ctx *ctx, celt_norm *X,
    int recombine=0;
    int longBlocks;
    unsigned cm=0;
-#ifdef RESYNTH
-   int resynth = 1;
-#else
-   int resynth = !ctx->encode;
-#endif
    int k;
    int encode;
    int tf_change;
@@ -1151,11 +1186,10 @@ static unsigned quant_band(struct band_ctx *ctx, celt_norm *X,
          deinterleave_hadamard(lowband, N_B>>recombine, B0<<recombine, longBlocks);
    }
 
-   cm = quant_partition(ctx, X, N, b, B, lowband,
-         LM, gain, fill);
+   cm = quant_partition(ctx, X, N, b, B, lowband, LM, gain, fill);
 
    /* This code is used by the decoder and by the resynthesis-enabled encoder */
-   if (resynth)
+   if (ctx->resynth)
    {
       /* Undo the sample reorganization going from time order to frequency order */
       if (B0>1)
@@ -1208,11 +1242,6 @@ static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm
    int inv = 0;
    opus_val16 mid=0, side=0;
    unsigned cm=0;
-#ifdef RESYNTH
-   int resynth = 1;
-#else
-   int resynth = !ctx->encode;
-#endif
    int mbits, sbits, delta;
    int itheta;
    int qalloc;
@@ -1232,8 +1261,7 @@ static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm
 
    orig_fill = fill;
 
-   compute_theta(ctx, &sctx, X, Y, N, &b, B, B,
-         LM, 1, &fill);
+   compute_theta(ctx, &sctx, X, Y, N, &b, B, B, LM, 1, &fill);
    inv = sctx.inv;
    imid = sctx.imid;
    iside = sctx.iside;
@@ -1281,13 +1309,13 @@ static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm
       sign = 1-2*sign;
       /* We use orig_fill here because we want to fold the side, but if
          itheta==16384, we'll have cleared the low bits of fill. */
-      cm = quant_band(ctx, x2, N, mbits, B, lowband,
-            LM, lowband_out, Q15ONE, lowband_scratch, orig_fill);
+      cm = quant_band(ctx, x2, N, mbits, B, lowband, LM, lowband_out, Q15ONE,
+            lowband_scratch, orig_fill);
       /* We don't split N=2 bands, so cm is either 1 or 0 (for a fold-collapse),
          and there's no need to worry about mixing with the other channel. */
       y2[0] = -sign*x2[1];
       y2[1] = sign*x2[0];
-      if (resynth)
+      if (ctx->resynth)
       {
          celt_norm tmp;
          X[0] = MULT16_16_Q15(mid, X[0]);
@@ -1314,38 +1342,32 @@ static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm
       {
          /* In stereo mode, we do not apply a scaling to the mid because we need the normalized
             mid for folding later. */
-         cm = quant_band(ctx, X, N, mbits, B,
-               lowband, LM, lowband_out,
-               Q15ONE, lowband_scratch, fill);
+         cm = quant_band(ctx, X, N, mbits, B, lowband, LM, lowband_out, Q15ONE,
+               lowband_scratch, fill);
          rebalance = mbits - (rebalance-ctx->remaining_bits);
          if (rebalance > 3<<BITRES && itheta!=0)
             sbits += rebalance - (3<<BITRES);
 
          /* For a stereo split, the high bits of fill are always zero, so no
             folding will be done to the side. */
-         cm |= quant_band(ctx, Y, N, sbits, B,
-               NULL, LM, NULL,
-               side, NULL, fill>>B);
+         cm |= quant_band(ctx, Y, N, sbits, B, NULL, LM, NULL, side, NULL, fill>>B);
       } else {
          /* For a stereo split, the high bits of fill are always zero, so no
             folding will be done to the side. */
-         cm = quant_band(ctx, Y, N, sbits, B,
-               NULL, LM, NULL,
-               side, NULL, fill>>B);
+         cm = quant_band(ctx, Y, N, sbits, B, NULL, LM, NULL, side, NULL, fill>>B);
          rebalance = sbits - (rebalance-ctx->remaining_bits);
          if (rebalance > 3<<BITRES && itheta!=16384)
             mbits += rebalance - (3<<BITRES);
          /* In stereo mode, we do not apply a scaling to the mid because we need the normalized
             mid for folding later. */
-         cm |= quant_band(ctx, X, N, mbits, B,
-               lowband, LM, lowband_out,
-               Q15ONE, lowband_scratch, fill);
+         cm |= quant_band(ctx, X, N, mbits, B, lowband, LM, lowband_out, Q15ONE,
+               lowband_scratch, fill);
       }
    }
 
 
    /* This code is used by the decoder and by the resynthesis-enabled encoder */
-   if (resynth)
+   if (ctx->resynth)
    {
       if (N!=2)
          stereo_merge(X, Y, mid, N, ctx->arch);
@@ -1359,19 +1381,38 @@ static unsigned quant_band_stereo(struct band_ctx *ctx, celt_norm *X, celt_norm
    return cm;
 }
 
+static void special_hybrid_folding(const CELTMode *m, celt_norm *norm, celt_norm *norm2, int start, int M, int dual_stereo)
+{
+   int n1, n2;
+   const opus_int16 * OPUS_RESTRICT eBands = m->eBands;
+   n1 = M*(eBands[start+1]-eBands[start]);
+   n2 = M*(eBands[start+2]-eBands[start+1]);
+   /* Duplicate enough of the first band folding data to be able to fold the second band.
+      Copies no data for CELT-only mode. */
+   OPUS_COPY(&norm[n1], &norm[2*n1 - n2], n2-n1);
+   if (dual_stereo)
+      OPUS_COPY(&norm2[n1], &norm2[2*n1 - n2], n2-n1);
+}
 
 void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       celt_norm *X_, celt_norm *Y_, unsigned char *collapse_masks,
       const celt_ener *bandE, int *pulses, int shortBlocks, int spread,
       int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits,
       opus_int32 balance, ec_ctx *ec, int LM, int codedBands,
-      opus_uint32 *seed, int arch)
+      opus_uint32 *seed, int complexity, int arch, int disable_inv)
 {
    int i;
    opus_int32 remaining_bits;
    const opus_int16 * OPUS_RESTRICT eBands = m->eBands;
    celt_norm * OPUS_RESTRICT norm, * OPUS_RESTRICT norm2;
    VARDECL(celt_norm, _norm);
+   VARDECL(celt_norm, _lowband_scratch);
+   VARDECL(celt_norm, X_save);
+   VARDECL(celt_norm, Y_save);
+   VARDECL(celt_norm, X_save2);
+   VARDECL(celt_norm, Y_save2);
+   VARDECL(celt_norm, norm_save2);
+   int resynth_alloc;
    celt_norm *lowband_scratch;
    int B;
    int M;
@@ -1379,10 +1420,11 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
    int update_lowband = 1;
    int C = Y_ != NULL ? 2 : 1;
    int norm_offset;
+   int theta_rdo = encode && Y_!=NULL && !dual_stereo && complexity>=8;
 #ifdef RESYNTH
    int resynth = 1;
 #else
-   int resynth = !encode;
+   int resynth = !encode || theta_rdo;
 #endif
    struct band_ctx ctx;
    SAVE_STACK;
@@ -1395,9 +1437,24 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
    ALLOC(_norm, C*(M*eBands[m->nbEBands-1]-norm_offset), celt_norm);
    norm = _norm;
    norm2 = norm + M*eBands[m->nbEBands-1]-norm_offset;
-   /* We can use the last band as scratch space because we don't need that
-      scratch space for the last band. */
+
+   /* For decoding, we can use the last band as scratch space because we don't need that
+      scratch space for the last band and we don't care about the data there until we're
+      decoding the last band. */
+   if (encode && resynth)
+      resynth_alloc = M*(eBands[m->nbEBands]-eBands[m->nbEBands-1]);
+   else
+      resynth_alloc = ALLOC_NONE;
+   ALLOC(_lowband_scratch, resynth_alloc, celt_norm);
+   if (encode && resynth)
+      lowband_scratch = _lowband_scratch;
+   else
       lowband_scratch = X_+M*eBands[m->nbEBands-1];
+   ALLOC(X_save, resynth_alloc, celt_norm);
+   ALLOC(Y_save, resynth_alloc, celt_norm);
+   ALLOC(X_save2, resynth_alloc, celt_norm);
+   ALLOC(Y_save2, resynth_alloc, celt_norm);
+   ALLOC(norm_save2, resynth_alloc, celt_norm);
 
    lowband_offset = 0;
    ctx.bandE = bandE;
@@ -1408,6 +1465,11 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
    ctx.seed = *seed;
    ctx.spread = spread;
    ctx.arch = arch;
+   ctx.disable_inv = disable_inv;
+   ctx.resynth = resynth;
+   ctx.theta_round = 0;
+   /* Avoid injecting noise in the first band on transients. */
+   ctx.avoid_split_noise = B > 1;
    for (i=start;i<end;i++)
    {
       opus_int32 tell;
@@ -1430,6 +1492,7 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       else
          Y = NULL;
       N = M*eBands[i+1]-M*eBands[i];
+      celt_assert(N > 0);
       tell = ec_tell_frac(ec);
 
       /* Compute how many bits we want to allocate to this band */
@@ -1445,8 +1508,15 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
          b = 0;
       }
 
+#ifndef DISABLE_UPDATE_DRAFT
+      if (resynth && (M*eBands[i]-N >= M*eBands[start] || i==start+1) && (update_lowband || lowband_offset==0))
+            lowband_offset = i;
+      if (i == start+1)
+         special_hybrid_folding(m, norm, norm2, start, M, dual_stereo);
+#else
       if (resynth && M*eBands[i]-N >= M*eBands[start] && (update_lowband || lowband_offset==0))
             lowband_offset = i;
+#endif
 
       tf_change = tf_res[i];
       ctx.tf_change = tf_change;
@@ -1457,7 +1527,7 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
             Y = norm;
          lowband_scratch = NULL;
       }
-      if (i==end-1)
+      if (last && !theta_rdo)
          lowband_scratch = NULL;
 
       /* Get a conservative estimate of the collapse_mask's for the bands we're
@@ -1472,7 +1542,11 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
          fold_start = lowband_offset;
          while(M*eBands[--fold_start] > effective_lowband+norm_offset);
          fold_end = lowband_offset-1;
+#ifndef DISABLE_UPDATE_DRAFT
+         while(++fold_end < i && M*eBands[fold_end] < effective_lowband+norm_offset+N);
+#else
          while(M*eBands[++fold_end] < effective_lowband+norm_offset+N);
+#endif
          x_cm = y_cm = 0;
          fold_i = fold_start; do {
            x_cm |= collapse_masks[fold_i*C+0];
@@ -1505,9 +1579,75 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       } else {
          if (Y!=NULL)
          {
+            if (theta_rdo && i < intensity)
+            {
+               ec_ctx ec_save, ec_save2;
+               struct band_ctx ctx_save, ctx_save2;
+               opus_val32 dist0, dist1;
+               unsigned cm, cm2;
+               int nstart_bytes, nend_bytes, save_bytes;
+               unsigned char *bytes_buf;
+               unsigned char bytes_save[1275];
+               opus_val16 w[2];
+               compute_channel_weights(bandE[i], bandE[i+m->nbEBands], w);
+               /* Make a copy. */
+               cm = x_cm|y_cm;
+               ec_save = *ec;
+               ctx_save = ctx;
+               OPUS_COPY(X_save, X, N);
+               OPUS_COPY(Y_save, Y, N);
+               /* Encode and round down. */
+               ctx.theta_round = -1;
+               x_cm = quant_band_stereo(&ctx, X, Y, N, b, B,
+                     effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
+                     last?NULL:norm+M*eBands[i]-norm_offset, lowband_scratch, cm);
+               dist0 = MULT16_32_Q15(w[0], celt_inner_prod(X_save, X, N, arch)) + MULT16_32_Q15(w[1], celt_inner_prod(Y_save, Y, N, arch));
+
+               /* Save first result. */
+               cm2 = x_cm;
+               ec_save2 = *ec;
+               ctx_save2 = ctx;
+               OPUS_COPY(X_save2, X, N);
+               OPUS_COPY(Y_save2, Y, N);
+               if (!last)
+                  OPUS_COPY(norm_save2, norm+M*eBands[i]-norm_offset, N);
+               nstart_bytes = ec_save.offs;
+               nend_bytes = ec_save.storage;
+               bytes_buf = ec_save.buf+nstart_bytes;
+               save_bytes = nend_bytes-nstart_bytes;
+               OPUS_COPY(bytes_save, bytes_buf, save_bytes);
+
+               /* Restore */
+               *ec = ec_save;
+               ctx = ctx_save;
+               OPUS_COPY(X, X_save, N);
+               OPUS_COPY(Y, Y_save, N);
+#ifndef DISABLE_UPDATE_DRAFT
+               if (i == start+1)
+                  special_hybrid_folding(m, norm, norm2, start, M, dual_stereo);
+#endif
+               /* Encode and round up. */
+               ctx.theta_round = 1;
+               x_cm = quant_band_stereo(&ctx, X, Y, N, b, B,
+                     effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
+                     last?NULL:norm+M*eBands[i]-norm_offset, lowband_scratch, cm);
+               dist1 = MULT16_32_Q15(w[0], celt_inner_prod(X_save, X, N, arch)) + MULT16_32_Q15(w[1], celt_inner_prod(Y_save, Y, N, arch));
+               if (dist0 >= dist1) {
+                  x_cm = cm2;
+                  *ec = ec_save2;
+                  ctx = ctx_save2;
+                  OPUS_COPY(X, X_save2, N);
+                  OPUS_COPY(Y, Y_save2, N);
+                  if (!last)
+                     OPUS_COPY(norm+M*eBands[i]-norm_offset, norm_save2, N);
+                  OPUS_COPY(bytes_buf, bytes_save, save_bytes);
+               }
+            } else {
+               ctx.theta_round = 0;
                x_cm = quant_band_stereo(&ctx, X, Y, N, b, B,
                      effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
                      last?NULL:norm+M*eBands[i]-norm_offset, lowband_scratch, x_cm|y_cm);
+            }
          } else {
             x_cm = quant_band(&ctx, X, N, b, B,
                   effective_lowband != -1 ? norm+effective_lowband : NULL, LM,
@@ -1521,6 +1661,9 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
 
       /* Update the folding position only as long as we have 1 bit/sample depth. */
       update_lowband = b>(N<<BITRES);
+      /* We only need to avoid noise on a split for the first band. After that, we
+         have folding. */
+      ctx.avoid_split_noise = 0;
    }
    *seed = ctx.seed;
 

node_modules/@discordjs/opus/deps/opus/celt/bands.h

@@ -36,12 +36,15 @@
 #include "entdec.h"
 #include "rate.h"
 
+opus_int16 bitexact_cos(opus_int16 x);
+int bitexact_log2tan(int isin,int icos);
+
 /** Compute the amplitude (sqrt energy) in each of the bands
  * @param m Mode data
  * @param X Spectrum
  * @param bandE Square root of the energy for each band (returned)
  */
-void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM);
+void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int LM, int arch);
 
 /*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/
 
@@ -69,7 +72,7 @@ void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
 
 int spreading_decision(const CELTMode *m, const celt_norm *X, int *average,
       int last_decision, int *hf_average, int *tapset_decision, int update_hf,
-      int end, int C, int M);
+      int end, int C, int M, const int *spread_weight);
 
 #ifdef MEASURE_NORM_MSE
 void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C);
@@ -105,7 +108,7 @@ void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       const celt_ener *bandE, int *pulses, int shortBlocks, int spread,
       int dual_stereo, int intensity, int *tf_res, opus_int32 total_bits,
       opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed,
-      int arch);
+      int complexity, int arch, int disable_inv);
 
 void anti_collapse(const CELTMode *m, celt_norm *X_,
       unsigned char *collapse_masks, int LM, int C, int size, int start,

node_modules/@discordjs/opus/deps/opus/celt/celt.c

@@ -111,26 +111,31 @@ void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
       t = MAC16_32_Q16(x[i], g10, x2);
       t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
       t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
+      t = SATURATE(t, SIG_SAT);
       y[i] = t;
       x4=SHL32(x[i-T+3],1);
       t = MAC16_32_Q16(x[i+1], g10, x1);
       t = MAC16_32_Q16(t, g11, ADD32(x0,x2));
       t = MAC16_32_Q16(t, g12, ADD32(x4,x3));
+      t = SATURATE(t, SIG_SAT);
       y[i+1] = t;
       x3=SHL32(x[i-T+4],1);
       t = MAC16_32_Q16(x[i+2], g10, x0);
       t = MAC16_32_Q16(t, g11, ADD32(x4,x1));
       t = MAC16_32_Q16(t, g12, ADD32(x3,x2));
+      t = SATURATE(t, SIG_SAT);
       y[i+2] = t;
       x2=SHL32(x[i-T+5],1);
       t = MAC16_32_Q16(x[i+3], g10, x4);
       t = MAC16_32_Q16(t, g11, ADD32(x3,x0));
       t = MAC16_32_Q16(t, g12, ADD32(x2,x1));
+      t = SATURATE(t, SIG_SAT);
       y[i+3] = t;
       x1=SHL32(x[i-T+6],1);
       t = MAC16_32_Q16(x[i+4], g10, x3);
       t = MAC16_32_Q16(t, g11, ADD32(x2,x4));
       t = MAC16_32_Q16(t, g12, ADD32(x1,x0));
+      t = SATURATE(t, SIG_SAT);
       y[i+4] = t;
    }
 #ifdef CUSTOM_MODES
@@ -141,6 +146,7 @@ void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
       t = MAC16_32_Q16(x[i], g10, x2);
       t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
       t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
+      t = SATURATE(t, SIG_SAT);
       y[i] = t;
       x4=x3;
       x3=x2;
@@ -169,6 +175,7 @@ void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
                + MULT16_32_Q15(g10,x2)
                + MULT16_32_Q15(g11,ADD32(x1,x3))
                + MULT16_32_Q15(g12,ADD32(x0,x4));
+      y[i] = SATURATE(y[i], SIG_SAT);
       x4=x3;
       x3=x2;
       x2=x1;
@@ -200,6 +207,10 @@ void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
          OPUS_MOVE(y, x, N);
       return;
    }
+   /* When the gain is zero, T0 and/or T1 is set to zero. We need
+      to have then be at least 2 to avoid processing garbage data. */
+   T0 = IMAX(T0, COMBFILTER_MINPERIOD);
+   T1 = IMAX(T1, COMBFILTER_MINPERIOD);
    g00 = MULT16_16_P15(g0, gains[tapset0][0]);
    g01 = MULT16_16_P15(g0, gains[tapset0][1]);
    g02 = MULT16_16_P15(g0, gains[tapset0][2]);
@@ -225,6 +236,7 @@ void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
                + MULT16_32_Q15(MULT16_16_Q15(f,g10),x2)
                + MULT16_32_Q15(MULT16_16_Q15(f,g11),ADD32(x1,x3))
                + MULT16_32_Q15(MULT16_16_Q15(f,g12),ADD32(x0,x4));
+      y[i] = SATURATE(y[i], SIG_SAT);
       x4=x3;
       x3=x2;
       x2=x1;
@@ -244,11 +256,16 @@ void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
 }
 #endif /* OVERRIDE_comb_filter */
 
+/* TF change table. Positive values mean better frequency resolution (longer
+   effective window), whereas negative values mean better time resolution
+   (shorter effective window). The second index is computed as:
+   4*isTransient + 2*tf_select + per_band_flag */
 const signed char tf_select_table[4][8] = {
-      {0, -1, 0, -1,    0,-1, 0,-1},
-      {0, -1, 0, -2,    1, 0, 1,-1},
-      {0, -2, 0, -3,    2, 0, 1,-1},
-      {0, -2, 0, -3,    3, 0, 1,-1},
+    /*isTransient=0     isTransient=1 */
+      {0, -1, 0, -1,    0,-1, 0,-1}, /* 2.5 ms */
+      {0, -1, 0, -2,    1, 0, 1,-1}, /* 5 ms */
+      {0, -2, 0, -3,    2, 0, 1,-1}, /* 10 ms */
+      {0, -2, 0, -3,    3, 0, 1,-1}, /* 20 ms */
 };
 
 

node_modules/@discordjs/opus/deps/opus/celt/celt.h

@@ -50,6 +50,8 @@ extern "C" {
 #define CELTDecoder OpusCustomDecoder
 #define CELTMode OpusCustomMode
 
+#define LEAK_BANDS 19
+
 typedef struct {
    int valid;
    float tonality;
@@ -57,17 +59,27 @@ typedef struct {
    float noisiness;
    float activity;
    float music_prob;
+   float music_prob_min;
+   float music_prob_max;
    int   bandwidth;
-}AnalysisInfo;
+   float activity_probability;
+   float max_pitch_ratio;
+   /* Store as Q6 char to save space. */
+   unsigned char leak_boost[LEAK_BANDS];
+} AnalysisInfo;
+
+typedef struct {
+   int signalType;
+   int offset;
+} SILKInfo;
 
 #define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
 
 #define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
 
-/* Encoder/decoder Requests */
+#define __celt_check_silkinfo_ptr(ptr) ((ptr) + ((ptr) - (const SILKInfo*)(ptr)))
 
-/* Expose this option again when variable framesize actually works */
-#define OPUS_FRAMESIZE_VARIABLE              5010 /**< Optimize the frame size dynamically */
+/* Encoder/decoder Requests */
 
 
 #define CELT_SET_PREDICTION_REQUEST    10002
@@ -116,6 +128,9 @@ typedef struct {
 #define OPUS_SET_ENERGY_MASK_REQUEST    10026
 #define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
 
+#define CELT_SET_SILK_INFO_REQUEST    10028
+#define CELT_SET_SILK_INFO(x) CELT_SET_SILK_INFO_REQUEST, __celt_check_silkinfo_ptr(x)
+
 /* Encoder stuff */
 
 int celt_encoder_get_size(int channels);
@@ -194,6 +209,13 @@ static OPUS_INLINE int fromOpus(unsigned char c)
 
 extern const signed char tf_select_table[4][8];
 
+#if defined(ENABLE_HARDENING) || defined(ENABLE_ASSERTIONS)
+void validate_celt_decoder(CELTDecoder *st);
+#define VALIDATE_CELT_DECODER(st) validate_celt_decoder(st)
+#else
+#define VALIDATE_CELT_DECODER(st)
+#endif
+
 int resampling_factor(opus_int32 rate);
 
 void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,

node_modules/@discordjs/opus/deps/opus/celt/celt_decoder.c

@@ -51,6 +51,14 @@
 #include "celt_lpc.h"
 #include "vq.h"
 
+/* The maximum pitch lag to allow in the pitch-based PLC. It's possible to save
+   CPU time in the PLC pitch search by making this smaller than MAX_PERIOD. The
+   current value corresponds to a pitch of 66.67 Hz. */
+#define PLC_PITCH_LAG_MAX (720)
+/* The minimum pitch lag to allow in the pitch-based PLC. This corresponds to a
+   pitch of 480 Hz. */
+#define PLC_PITCH_LAG_MIN (100)
+
 #if defined(SMALL_FOOTPRINT) && defined(FIXED_POINT)
 #define NORM_ALIASING_HACK
 #endif
@@ -73,6 +81,7 @@ struct OpusCustomDecoder {
    int downsample;
    int start, end;
    int signalling;
+   int disable_inv;
    int arch;
 
    /* Everything beyond this point gets cleared on a reset */
@@ -82,6 +91,7 @@ struct OpusCustomDecoder {
    int error;
    int last_pitch_index;
    int loss_count;
+   int skip_plc;
    int postfilter_period;
    int postfilter_period_old;
    opus_val16 postfilter_gain;
@@ -99,6 +109,38 @@ struct OpusCustomDecoder {
    /* opus_val16 backgroundLogE[], Size = 2*mode->nbEBands */
 };
 
+#if defined(ENABLE_HARDENING) || defined(ENABLE_ASSERTIONS)
+/* Make basic checks on the CELT state to ensure we don't end
+   up writing all over memory. */
+void validate_celt_decoder(CELTDecoder *st)
+{
+#ifndef CUSTOM_MODES
+   celt_assert(st->mode == opus_custom_mode_create(48000, 960, NULL));
+   celt_assert(st->overlap == 120);
+#endif
+   celt_assert(st->channels == 1 || st->channels == 2);
+   celt_assert(st->stream_channels == 1 || st->stream_channels == 2);
+   celt_assert(st->downsample > 0);
+   celt_assert(st->start == 0 || st->start == 17);
+   celt_assert(st->start < st->end);
+   celt_assert(st->end <= 21);
+#ifdef OPUS_ARCHMASK
+   celt_assert(st->arch >= 0);
+   celt_assert(st->arch <= OPUS_ARCHMASK);
+#endif
+   celt_assert(st->last_pitch_index <= PLC_PITCH_LAG_MAX);
+   celt_assert(st->last_pitch_index >= PLC_PITCH_LAG_MIN || st->last_pitch_index == 0);
+   celt_assert(st->postfilter_period < MAX_PERIOD);
+   celt_assert(st->postfilter_period >= COMBFILTER_MINPERIOD || st->postfilter_period == 0);
+   celt_assert(st->postfilter_period_old < MAX_PERIOD);
+   celt_assert(st->postfilter_period_old >= COMBFILTER_MINPERIOD || st->postfilter_period_old == 0);
+   celt_assert(st->postfilter_tapset <= 2);
+   celt_assert(st->postfilter_tapset >= 0);
+   celt_assert(st->postfilter_tapset_old <= 2);
+   celt_assert(st->postfilter_tapset_old >= 0);
+}
+#endif
+
 int celt_decoder_get_size(int channels)
 {
    const CELTMode *mode = opus_custom_mode_create(48000, 960, NULL);
@@ -162,10 +204,13 @@ OPUS_CUSTOM_NOSTATIC int opus_custom_decoder_init(CELTDecoder *st, const CELTMod
    st->start = 0;
    st->end = st->mode->effEBands;
    st->signalling = 1;
+#ifndef DISABLE_UPDATE_DRAFT
+   st->disable_inv = channels == 1;
+#else
+   st->disable_inv = 0;
+#endif
    st->arch = opus_select_arch();
 
-   st->loss_count = 0;
-
    opus_custom_decoder_ctl(st, OPUS_RESET_STATE);
 
    return OPUS_OK;
@@ -178,6 +223,36 @@ void opus_custom_decoder_destroy(CELTDecoder *st)
 }
 #endif /* CUSTOM_MODES */
 
+#ifndef CUSTOM_MODES
+/* Special case for stereo with no downsampling and no accumulation. This is
+   quite common and we can make it faster by processing both channels in the
+   same loop, reducing overhead due to the dependency loop in the IIR filter. */
+static void deemphasis_stereo_simple(celt_sig *in[], opus_val16 *pcm, int N, const opus_val16 coef0,
+      celt_sig *mem)
+{
+   celt_sig * OPUS_RESTRICT x0;
+   celt_sig * OPUS_RESTRICT x1;
+   celt_sig m0, m1;
+   int j;
+   x0=in[0];
+   x1=in[1];
+   m0 = mem[0];
+   m1 = mem[1];
+   for (j=0;j<N;j++)
+   {
+      celt_sig tmp0, tmp1;
+      /* Add VERY_SMALL to x[] first to reduce dependency chain. */
+      tmp0 = x0[j] + VERY_SMALL + m0;
+      tmp1 = x1[j] + VERY_SMALL + m1;
+      m0 = MULT16_32_Q15(coef0, tmp0);
+      m1 = MULT16_32_Q15(coef0, tmp1);
+      pcm[2*j  ] = SCALEOUT(SIG2WORD16(tmp0));
+      pcm[2*j+1] = SCALEOUT(SIG2WORD16(tmp1));
+   }
+   mem[0] = m0;
+   mem[1] = m1;
+}
+#endif
 
 #ifndef RESYNTH
 static
@@ -191,6 +266,14 @@ void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, c
    opus_val16 coef0;
    VARDECL(celt_sig, scratch);
    SAVE_STACK;
+#ifndef CUSTOM_MODES
+   /* Short version for common case. */
+   if (downsample == 1 && C == 2 && !accum)
+   {
+      deemphasis_stereo_simple(in, pcm, N, coef[0], mem);
+      return;
+   }
+#endif
 #ifndef FIXED_POINT
    (void)accum;
    celt_assert(accum==0);
@@ -226,7 +309,7 @@ void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, c
          /* Shortcut for the standard (non-custom modes) case */
          for (j=0;j<N;j++)
          {
-            celt_sig tmp = x[j] + m + VERY_SMALL;
+            celt_sig tmp = x[j] + VERY_SMALL + m;
             m = MULT16_32_Q15(coef0, tmp);
             scratch[j] = tmp;
          }
@@ -247,7 +330,7 @@ void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, c
          {
             for (j=0;j<N;j++)
             {
-               celt_sig tmp = x[j] + m + VERY_SMALL;
+               celt_sig tmp = x[j] + VERY_SMALL + m;
                m = MULT16_32_Q15(coef0, tmp);
                y[j*C] = SCALEOUT(SIG2WORD16(tmp));
             }
@@ -334,7 +417,7 @@ void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[],
       denormalise_bands(mode, X+N, freq2, oldBandE+nbEBands, start, effEnd, M,
             downsample, silence);
       for (i=0;i<N;i++)
-         freq[i] = HALF32(ADD32(freq[i],freq2[i]));
+         freq[i] = ADD32(HALF32(freq[i]), HALF32(freq2[i]));
       for (b=0;b<B;b++)
          clt_mdct_backward(&mode->mdct, &freq[b], out_syn[0]+NB*b, mode->window, overlap, shift, B, arch);
    } else {
@@ -346,6 +429,12 @@ void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[],
             clt_mdct_backward(&mode->mdct, &freq[b], out_syn[c]+NB*b, mode->window, overlap, shift, B, arch);
       } while (++c<CC);
    }
+   /* Saturate IMDCT output so that we can't overflow in the pitch postfilter
+      or in the */
+   c=0; do {
+      for (i=0;i<N;i++)
+         out_syn[c][i] = SATURATE(out_syn[c][i], SIG_SAT);
+   } while (++c<CC);
    RESTORE_STACK;
 }
 
@@ -388,14 +477,6 @@ static void tf_decode(int start, int end, int isTransient, int *tf_res, int LM,
    }
 }
 
-/* The maximum pitch lag to allow in the pitch-based PLC. It's possible to save
-   CPU time in the PLC pitch search by making this smaller than MAX_PERIOD. The
-   current value corresponds to a pitch of 66.67 Hz. */
-#define PLC_PITCH_LAG_MAX (720)
-/* The minimum pitch lag to allow in the pitch-based PLC. This corresponds to a
-   pitch of 480 Hz. */
-#define PLC_PITCH_LAG_MIN (100)
-
 static int celt_plc_pitch_search(celt_sig *decode_mem[2], int C, int arch)
 {
    int pitch_index;
@@ -447,7 +528,7 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
 
    loss_count = st->loss_count;
    start = st->start;
-   noise_based = loss_count >= 5 || start != 0;
+   noise_based = loss_count >= 5 || start != 0 || st->skip_plc;
    if (noise_based)
    {
       /* Noise-based PLC/CNG */
@@ -505,12 +586,15 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
 
       celt_synthesis(mode, X, out_syn, oldBandE, start, effEnd, C, C, 0, LM, st->downsample, 0, st->arch);
    } else {
+      int exc_length;
       /* Pitch-based PLC */
       const opus_val16 *window;
+      opus_val16 *exc;
       opus_val16 fade = Q15ONE;
       int pitch_index;
       VARDECL(opus_val32, etmp);
-      VARDECL(opus_val16, exc);
+      VARDECL(opus_val16, _exc);
+      VARDECL(opus_val16, fir_tmp);
 
       if (loss_count == 0)
       {
@@ -520,8 +604,14 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
          fade = QCONST16(.8f,15);
       }
 
+      /* We want the excitation for 2 pitch periods in order to look for a
+         decaying signal, but we can't get more than MAX_PERIOD. */
+      exc_length = IMIN(2*pitch_index, MAX_PERIOD);
+
       ALLOC(etmp, overlap, opus_val32);
-      ALLOC(exc, MAX_PERIOD, opus_val16);
+      ALLOC(_exc, MAX_PERIOD+LPC_ORDER, opus_val16);
+      ALLOC(fir_tmp, exc_length, opus_val16);
+      exc = _exc+LPC_ORDER;
       window = mode->window;
       c=0; do {
          opus_val16 decay;
@@ -530,13 +620,11 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
          celt_sig *buf;
          int extrapolation_offset;
          int extrapolation_len;
-         int exc_length;
          int j;
 
          buf = decode_mem[c];
-         for (i=0;i<MAX_PERIOD;i++) {
-            exc[i] = ROUND16(buf[DECODE_BUFFER_SIZE-MAX_PERIOD+i], SIG_SHIFT);
-         }
+         for (i=0;i<MAX_PERIOD+LPC_ORDER;i++)
+            exc[i-LPC_ORDER] = ROUND16(buf[DECODE_BUFFER_SIZE-MAX_PERIOD-LPC_ORDER+i], SIG_SHIFT);
 
          if (loss_count == 0)
          {
@@ -562,22 +650,32 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
 #endif
             }
             _celt_lpc(lpc+c*LPC_ORDER, ac, LPC_ORDER);
+#ifdef FIXED_POINT
+         /* For fixed-point, apply bandwidth expansion until we can guarantee that
+            no overflow can happen in the IIR filter. This means:
+            32768*sum(abs(filter)) < 2^31 */
+         while (1) {
+            opus_val16 tmp=Q15ONE;
+            opus_val32 sum=QCONST16(1., SIG_SHIFT);
+            for (i=0;i<LPC_ORDER;i++)
+               sum += ABS16(lpc[c*LPC_ORDER+i]);
+            if (sum < 65535) break;
+            for (i=0;i<LPC_ORDER;i++)
+            {
+               tmp = MULT16_16_Q15(QCONST16(.99f,15), tmp);
+               lpc[c*LPC_ORDER+i] = MULT16_16_Q15(lpc[c*LPC_ORDER+i], tmp);
+            }
+         }
+#endif
          }
-         /* We want the excitation for 2 pitch periods in order to look for a
-            decaying signal, but we can't get more than MAX_PERIOD. */
-         exc_length = IMIN(2*pitch_index, MAX_PERIOD);
          /* Initialize the LPC history with the samples just before the start
             of the region for which we're computing the excitation. */
          {
-            opus_val16 lpc_mem[LPC_ORDER];
-            for (i=0;i<LPC_ORDER;i++)
-            {
-               lpc_mem[i] =
-                     ROUND16(buf[DECODE_BUFFER_SIZE-exc_length-1-i], SIG_SHIFT);
-            }
-            /* Compute the excitation for exc_length samples before the loss. */
+            /* Compute the excitation for exc_length samples before the loss. We need the copy
+               because celt_fir() cannot filter in-place. */
             celt_fir(exc+MAX_PERIOD-exc_length, lpc+c*LPC_ORDER,
-                  exc+MAX_PERIOD-exc_length, exc_length, LPC_ORDER, lpc_mem, st->arch);
+                  fir_tmp, exc_length, LPC_ORDER, st->arch);
+            OPUS_COPY(exc+MAX_PERIOD-exc_length, fir_tmp, exc_length);
          }
 
          /* Check if the waveform is decaying, and if so how fast.
@@ -631,9 +729,8 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
             tmp = ROUND16(
                   buf[DECODE_BUFFER_SIZE-MAX_PERIOD-N+extrapolation_offset+j],
                   SIG_SHIFT);
-            S1 += SHR32(MULT16_16(tmp, tmp), 8);
+            S1 += SHR32(MULT16_16(tmp, tmp), 10);
          }
-
          {
             opus_val16 lpc_mem[LPC_ORDER];
             /* Copy the last decoded samples (prior to the overlap region) to
@@ -645,6 +742,10 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
             celt_iir(buf+DECODE_BUFFER_SIZE-N, lpc+c*LPC_ORDER,
                   buf+DECODE_BUFFER_SIZE-N, extrapolation_len, LPC_ORDER,
                   lpc_mem, st->arch);
+#ifdef FIXED_POINT
+            for (i=0; i < extrapolation_len; i++)
+               buf[DECODE_BUFFER_SIZE-N+i] = SATURATE(buf[DECODE_BUFFER_SIZE-N+i], SIG_SAT);
+#endif
          }
 
          /* Check if the synthesis energy is higher than expected, which can
@@ -655,7 +756,7 @@ static void celt_decode_lost(CELTDecoder * OPUS_RESTRICT st, int N, int LM)
             for (i=0;i<extrapolation_len;i++)
             {
                opus_val16 tmp = ROUND16(buf[DECODE_BUFFER_SIZE-N+i], SIG_SHIFT);
-               S2 += SHR32(MULT16_16(tmp, tmp), 8);
+               S2 += SHR32(MULT16_16(tmp, tmp), 10);
             }
             /* This checks for an "explosion" in the synthesis. */
 #ifdef FIXED_POINT
@@ -763,6 +864,7 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat
    const opus_int16 *eBands;
    ALLOC_STACK;
 
+   VALIDATE_CELT_DECODER(st);
    mode = st->mode;
    nbEBands = mode->nbEBands;
    overlap = mode->overlap;
@@ -832,6 +934,10 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat
       return frame_size/st->downsample;
    }
 
+   /* Check if there are at least two packets received consecutively before
+    * turning on the pitch-based PLC */
+   st->skip_plc = st->loss_count != 0;
+
    if (dec == NULL)
    {
       ec_dec_init(&_dec,(unsigned char*)data,len);
@@ -953,7 +1059,7 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat
    ALLOC(pulses, nbEBands, int);
    ALLOC(fine_priority, nbEBands, int);
 
-   codedBands = compute_allocation(mode, start, end, offsets, cap,
+   codedBands = clt_compute_allocation(mode, start, end, offsets, cap,
          alloc_trim, &intensity, &dual_stereo, bits, &balance, pulses,
          fine_quant, fine_priority, C, LM, dec, 0, 0, 0);
 
@@ -976,7 +1082,8 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat
 
    quant_all_bands(0, mode, start, end, X, C==2 ? X+N : NULL, collapse_masks,
          NULL, pulses, shortBlocks, spread_decision, dual_stereo, intensity, tf_res,
-         len*(8<<BITRES)-anti_collapse_rsv, balance, dec, LM, codedBands, &st->rng, st->arch);
+         len*(8<<BITRES)-anti_collapse_rsv, balance, dec, LM, codedBands, &st->rng, 0,
+         st->arch, st->disable_inv);
 
    if (anti_collapse_rsv > 0)
    {
@@ -1198,6 +1305,7 @@ int opus_custom_decoder_ctl(CELTDecoder * OPUS_RESTRICT st, int request, ...)
                ((char*)&st->DECODER_RESET_START - (char*)st));
          for (i=0;i<2*st->mode->nbEBands;i++)
             oldLogE[i]=oldLogE2[i]=-QCONST16(28.f,DB_SHIFT);
+         st->skip_plc = 1;
       }
       break;
       case OPUS_GET_PITCH_REQUEST:
@@ -1230,6 +1338,26 @@ int opus_custom_decoder_ctl(CELTDecoder * OPUS_RESTRICT st, int request, ...)
          *value=st->rng;
       }
       break;
+      case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
+      {
+          opus_int32 value = va_arg(ap, opus_int32);
+          if(value<0 || value>1)
+          {
+             goto bad_arg;
+          }
+          st->disable_inv = value;
+      }
+      break;
+      case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+      {
+          opus_int32 *value = va_arg(ap, opus_int32*);
+          if (!value)
+          {
+             goto bad_arg;
+          }
+          *value = st->disable_inv;
+      }
+      break;
       default:
          goto bad_request;
    }

node_modules/@discordjs/opus/deps/opus/celt/celt_encoder.c

@@ -73,8 +73,8 @@ struct OpusCustomEncoder {
    int constrained_vbr;      /* If zero, VBR can do whatever it likes with the rate */
    int loss_rate;
    int lsb_depth;
-   int variable_duration;
    int lfe;
+   int disable_inv;
    int arch;
 
    /* Everything beyond this point gets cleared on a reset */
@@ -98,6 +98,7 @@ struct OpusCustomEncoder {
 #endif
    int consec_transient;
    AnalysisInfo analysis;
+   SILKInfo silk_info;
 
    opus_val32 preemph_memE[2];
    opus_val32 preemph_memD[2];
@@ -123,6 +124,7 @@ struct OpusCustomEncoder {
    /* opus_val16 oldBandE[],     Size = channels*mode->nbEBands */
    /* opus_val16 oldLogE[],      Size = channels*mode->nbEBands */
    /* opus_val16 oldLogE2[],     Size = channels*mode->nbEBands */
+   /* opus_val16 energyError[],  Size = channels*mode->nbEBands */
 };
 
 int celt_encoder_get_size(int channels)
@@ -136,9 +138,10 @@ OPUS_CUSTOM_NOSTATIC int opus_custom_encoder_get_size(const CELTMode *mode, int
    int size = sizeof(struct CELTEncoder)
          + (channels*mode->overlap-1)*sizeof(celt_sig)    /* celt_sig in_mem[channels*mode->overlap]; */
          + channels*COMBFILTER_MAXPERIOD*sizeof(celt_sig) /* celt_sig prefilter_mem[channels*COMBFILTER_MAXPERIOD]; */
-         + 3*channels*mode->nbEBands*sizeof(opus_val16);  /* opus_val16 oldBandE[channels*mode->nbEBands]; */
+         + 4*channels*mode->nbEBands*sizeof(opus_val16);  /* opus_val16 oldBandE[channels*mode->nbEBands]; */
                                                           /* opus_val16 oldLogE[channels*mode->nbEBands]; */
                                                           /* opus_val16 oldLogE2[channels*mode->nbEBands]; */
+                                                          /* opus_val16 energyError[channels*mode->nbEBands]; */
    return size;
 }
 
@@ -178,7 +181,6 @@ static int opus_custom_encoder_init_arch(CELTEncoder *st, const CELTMode *mode,
    st->start = 0;
    st->end = st->mode->effEBands;
    st->signalling = 1;
-
    st->arch = arch;
 
    st->constrained_vbr = 1;
@@ -223,7 +225,8 @@ void opus_custom_encoder_destroy(CELTEncoder *st)
 
 
 static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int C,
-                              opus_val16 *tf_estimate, int *tf_chan)
+                              opus_val16 *tf_estimate, int *tf_chan, int allow_weak_transients,
+                              int *weak_transient)
 {
    int i;
    VARDECL(opus_val16, tmp);
@@ -233,6 +236,12 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
    int c;
    opus_val16 tf_max;
    int len2;
+   /* Forward masking: 6.7 dB/ms. */
+#ifdef FIXED_POINT
+   int forward_shift = 4;
+#else
+   opus_val16 forward_decay = QCONST16(.0625f,15);
+#endif
    /* Table of 6*64/x, trained on real data to minimize the average error */
    static const unsigned char inv_table[128] = {
          255,255,156,110, 86, 70, 59, 51, 45, 40, 37, 33, 31, 28, 26, 25,
@@ -247,6 +256,19 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
    SAVE_STACK;
    ALLOC(tmp, len, opus_val16);
 
+   *weak_transient = 0;
+   /* For lower bitrates, let's be more conservative and have a forward masking
+      decay of 3.3 dB/ms. This avoids having to code transients at very low
+      bitrate (mostly for hybrid), which can result in unstable energy and/or
+      partial collapse. */
+   if (allow_weak_transients)
+   {
+#ifdef FIXED_POINT
+      forward_shift = 5;
+#else
+      forward_decay = QCONST16(.03125f,15);
+#endif
+   }
    len2=len/2;
    for (c=0;c<C;c++)
    {
@@ -269,7 +291,7 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
          mem0 = mem1 + y - 2*x;
          mem1 = x - .5f*y;
 #endif
-         tmp[i] = EXTRACT16(SHR32(y,2));
+         tmp[i] = SROUND16(y, 2);
          /*printf("%f ", tmp[i]);*/
       }
       /*printf("\n");*/
@@ -280,7 +302,7 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
       /* Normalize tmp to max range */
       {
          int shift=0;
-         shift = 14-celt_ilog2(1+celt_maxabs16(tmp, len));
+         shift = 14-celt_ilog2(MAX16(1, celt_maxabs16(tmp, len)));
          if (shift!=0)
          {
             for (i=0;i<len;i++)
@@ -299,9 +321,9 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
          mean += x2;
 #ifdef FIXED_POINT
          /* FIXME: Use PSHR16() instead */
-         tmp[i] = mem0 + PSHR32(x2-mem0,4);
+         tmp[i] = mem0 + PSHR32(x2-mem0,forward_shift);
 #else
-         tmp[i] = mem0 + MULT16_16_P15(QCONST16(.0625f,15),x2-mem0);
+         tmp[i] = mem0 + MULT16_16_P15(forward_decay,x2-mem0);
 #endif
          mem0 = tmp[i];
       }
@@ -311,6 +333,7 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
       /* Backward pass to compute the pre-echo threshold */
       for (i=len2-1;i>=0;i--)
       {
+         /* Backward masking: 13.9 dB/ms. */
 #ifdef FIXED_POINT
          /* FIXME: Use PSHR16() instead */
          tmp[i] = mem0 + PSHR32(tmp[i]-mem0,3);
@@ -339,6 +362,12 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
       /* Compute harmonic mean discarding the unreliable boundaries
          The data is smooth, so we only take 1/4th of the samples */
       unmask=0;
+      /* We should never see NaNs here. If we find any, then something really bad happened and we better abort
+         before it does any damage later on. If these asserts are disabled (no hardening), then the table
+         lookup a few lines below (id = ...) is likely to crash dur to an out-of-bounds read. DO NOT FIX
+         that crash on NaN since it could result in a worse issue later on. */
+      celt_assert(!celt_isnan(tmp[0]));
+      celt_assert(!celt_isnan(norm));
       for (i=12;i<len2-5;i+=4)
       {
          int id;
@@ -359,7 +388,12 @@ static int transient_analysis(const opus_val32 * OPUS_RESTRICT in, int len, int
       }
    }
    is_transient = mask_metric>200;
-
+   /* For low bitrates, define "weak transients" that need to be
+      handled differently to avoid partial collapse. */
+   if (allow_weak_transients && is_transient && mask_metric<600) {
+      is_transient = 0;
+      *weak_transient = 1;
+   }
    /* Arbitrary metric for VBR boost */
    tf_max = MAX16(0,celt_sqrt(27*mask_metric)-42);
    /* *tf_estimate = 1 + MIN16(1, sqrt(MAX16(0, tf_max-30))/20); */
@@ -549,7 +583,7 @@ static opus_val32 l1_metric(const celt_norm *tmp, int N, int LM, opus_val16 bias
 
 static int tf_analysis(const CELTMode *m, int len, int isTransient,
       int *tf_res, int lambda, celt_norm *X, int N0, int LM,
-      int *tf_sum, opus_val16 tf_estimate, int tf_chan)
+      opus_val16 tf_estimate, int tf_chan, int *importance)
 {
    int i;
    VARDECL(int, metric);
@@ -574,7 +608,6 @@ static int tf_analysis(const CELTMode *m, int len, int isTransient,
    ALLOC(path0, len, int);
    ALLOC(path1, len, int);
 
-   *tf_sum = 0;
    for (i=0;i<len;i++)
    {
       int k, N;
@@ -629,27 +662,26 @@ static int tf_analysis(const CELTMode *m, int len, int isTransient,
          metric[i] = 2*best_level;
       else
          metric[i] = -2*best_level;
-      *tf_sum += (isTransient ? LM : 0) - metric[i]/2;
       /* For bands that can't be split to -1, set the metric to the half-way point to avoid
          biasing the decision */
       if (narrow && (metric[i]==0 || metric[i]==-2*LM))
          metric[i]-=1;
-      /*printf("%d ", metric[i]);*/
+      /*printf("%d ", metric[i]/2 + (!isTransient)*LM);*/
    }
    /*printf("\n");*/
    /* Search for the optimal tf resolution, including tf_select */
    tf_select = 0;
    for (sel=0;sel<2;sel++)
    {
-      cost0 = 0;
-      cost1 = isTransient ? 0 : lambda;
+      cost0 = importance[0]*abs(metric[0]-2*tf_select_table[LM][4*isTransient+2*sel+0]);
+      cost1 = importance[0]*abs(metric[0]-2*tf_select_table[LM][4*isTransient+2*sel+1]) + (isTransient ? 0 : lambda);
       for (i=1;i<len;i++)
       {
          int curr0, curr1;
          curr0 = IMIN(cost0, cost1 + lambda);
          curr1 = IMIN(cost0 + lambda, cost1);
-         cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+0]);
-         cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+1]);
+         cost0 = curr0 + importance[i]*abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+0]);
+         cost1 = curr1 + importance[i]*abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*sel+1]);
       }
       cost0 = IMIN(cost0, cost1);
       selcost[sel]=cost0;
@@ -658,8 +690,8 @@ static int tf_analysis(const CELTMode *m, int len, int isTransient,
     * If tests confirm it's useful for non-transients, we could allow it. */
    if (selcost[1]<selcost[0] && isTransient)
       tf_select=1;
-   cost0 = 0;
-   cost1 = isTransient ? 0 : lambda;
+   cost0 = importance[0]*abs(metric[0]-2*tf_select_table[LM][4*isTransient+2*tf_select+0]);
+   cost1 = importance[0]*abs(metric[0]-2*tf_select_table[LM][4*isTransient+2*tf_select+1]) + (isTransient ? 0 : lambda);
    /* Viterbi forward pass */
    for (i=1;i<len;i++)
    {
@@ -687,8 +719,8 @@ static int tf_analysis(const CELTMode *m, int len, int isTransient,
          curr1 = from1;
          path1[i]= 1;
       }
-      cost0 = curr0 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+0]);
-      cost1 = curr1 + abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+1]);
+      cost0 = curr0 + importance[i]*abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+0]);
+      cost1 = curr1 + importance[i]*abs(metric[i]-2*tf_select_table[LM][4*isTransient+2*tf_select+1]);
    }
    tf_res[len-1] = cost0 < cost1 ? 0 : 1;
    /* Viterbi backward pass to check the decisions */
@@ -754,7 +786,7 @@ static void tf_encode(int start, int end, int isTransient, int *tf_res, int LM,
 static int alloc_trim_analysis(const CELTMode *m, const celt_norm *X,
       const opus_val16 *bandLogE, int end, int LM, int C, int N0,
       AnalysisInfo *analysis, opus_val16 *stereo_saving, opus_val16 tf_estimate,
-      int intensity, opus_val16 surround_trim, int arch)
+      int intensity, opus_val16 surround_trim, opus_int32 equiv_rate, int arch)
 {
    int i;
    opus_val32 diff=0;
@@ -762,6 +794,14 @@ static int alloc_trim_analysis(const CELTMode *m, const celt_norm *X,
    int trim_index;
    opus_val16 trim = QCONST16(5.f, 8);
    opus_val16 logXC, logXC2;
+   /* At low bitrate, reducing the trim seems to help. At higher bitrates, it's less
+      clear what's best, so we're keeping it as it was before, at least for now. */
+   if (equiv_rate < 64000) {
+      trim = QCONST16(4.f, 8);
+   } else if (equiv_rate < 80000) {
+      opus_int32 frac = (equiv_rate-64000) >> 10;
+      trim = QCONST16(4.f, 8) + QCONST16(1.f/16.f, 8)*frac;
+   }
    if (C==2)
    {
       opus_val16 sum = 0; /* Q10 */
@@ -809,7 +849,7 @@ static int alloc_trim_analysis(const CELTMode *m, const celt_norm *X,
    } while (++c<C);
    diff /= C*(end-1);
    /*printf("%f\n", diff);*/
-   trim -= MAX16(-QCONST16(2.f, 8), MIN16(QCONST16(2.f, 8), SHR16(diff+QCONST16(1.f, DB_SHIFT),DB_SHIFT-8)/6 ));
+   trim -= MAX32(-QCONST16(2.f, 8), MIN32(QCONST16(2.f, 8), SHR32(diff+QCONST16(1.f, DB_SHIFT),DB_SHIFT-8)/6 ));
    trim -= SHR16(surround_trim, DB_SHIFT-8);
    trim -= 2*SHR16(tf_estimate, 14-8);
 #ifndef DISABLE_FLOAT_API
@@ -930,7 +970,8 @@ static opus_val16 median_of_3(const opus_val16 *x)
 static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16 *bandLogE2,
       int nbEBands, int start, int end, int C, int *offsets, int lsb_depth, const opus_int16 *logN,
       int isTransient, int vbr, int constrained_vbr, const opus_int16 *eBands, int LM,
-      int effectiveBytes, opus_int32 *tot_boost_, int lfe, opus_val16 *surround_dynalloc)
+      int effectiveBytes, opus_int32 *tot_boost_, int lfe, opus_val16 *surround_dynalloc,
+      AnalysisInfo *analysis, int *importance, int *spread_weight)
 {
    int i, c;
    opus_int32 tot_boost=0;
@@ -956,6 +997,42 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
       for (i=0;i<end;i++)
          maxDepth = MAX16(maxDepth, bandLogE[c*nbEBands+i]-noise_floor[i]);
    } while (++c<C);
+   {
+      /* Compute a really simple masking model to avoid taking into account completely masked
+         bands when computing the spreading decision. */
+      VARDECL(opus_val16, mask);
+      VARDECL(opus_val16, sig);
+      ALLOC(mask, nbEBands, opus_val16);
+      ALLOC(sig, nbEBands, opus_val16);
+      for (i=0;i<end;i++)
+         mask[i] = bandLogE[i]-noise_floor[i];
+      if (C==2)
+      {
+         for (i=0;i<end;i++)
+            mask[i] = MAX16(mask[i], bandLogE[nbEBands+i]-noise_floor[i]);
+      }
+      OPUS_COPY(sig, mask, end);
+      for (i=1;i<end;i++)
+         mask[i] = MAX16(mask[i], mask[i-1] - QCONST16(2.f, DB_SHIFT));
+      for (i=end-2;i>=0;i--)
+         mask[i] = MAX16(mask[i], mask[i+1] - QCONST16(3.f, DB_SHIFT));
+      for (i=0;i<end;i++)
+      {
+         /* Compute SMR: Mask is never more than 72 dB below the peak and never below the noise floor.*/
+         opus_val16 smr = sig[i]-MAX16(MAX16(0, maxDepth-QCONST16(12.f, DB_SHIFT)), mask[i]);
+         /* Clamp SMR to make sure we're not shifting by something negative or too large. */
+#ifdef FIXED_POINT
+         /* FIXME: Use PSHR16() instead */
+         int shift = -PSHR32(MAX16(-QCONST16(5.f, DB_SHIFT), MIN16(0, smr)), DB_SHIFT);
+#else
+         int shift = IMIN(5, IMAX(0, -(int)floor(.5f + smr)));
+#endif
+         spread_weight[i] = 32 >> shift;
+      }
+      /*for (i=0;i<end;i++)
+         printf("%d ", spread_weight[i]);
+      printf("\n");*/
+   }
    /* Make sure that dynamic allocation can't make us bust the budget */
    if (effectiveBytes > 50 && LM>=1 && !lfe)
    {
@@ -1012,6 +1089,14 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
       }
       for (i=start;i<end;i++)
          follower[i] = MAX16(follower[i], surround_dynalloc[i]);
+      for (i=start;i<end;i++)
+      {
+#ifdef FIXED_POINT
+         importance[i] = PSHR32(13*celt_exp2(MIN16(follower[i], QCONST16(4.f, DB_SHIFT))), 16);
+#else
+         importance[i] = (int)floor(.5f+13*celt_exp2(MIN16(follower[i], QCONST16(4.f, DB_SHIFT))));
+#endif
+      }
       /* For non-transient CBR/CVBR frames, halve the dynalloc contribution */
       if ((!vbr || constrained_vbr)&&!isTransient)
       {
@@ -1020,14 +1105,26 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
       }
       for (i=start;i<end;i++)
       {
-         int width;
-         int boost;
-         int boost_bits;
-
          if (i<8)
             follower[i] *= 2;
          if (i>=12)
             follower[i] = HALF16(follower[i]);
+      }
+#ifdef DISABLE_FLOAT_API
+      (void)analysis;
+#else
+      if (analysis->valid)
+      {
+         for (i=start;i<IMIN(LEAK_BANDS, end);i++)
+            follower[i] = follower[i] +  QCONST16(1.f/64.f, DB_SHIFT)*analysis->leak_boost[i];
+      }
+#endif
+      for (i=start;i<end;i++)
+      {
+         int width;
+         int boost;
+         int boost_bits;
+
          follower[i] = MIN16(follower[i], QCONST16(4, DB_SHIFT));
 
          width = C*(eBands[i+1]-eBands[i])<<LM;
@@ -1042,11 +1139,11 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
             boost = (int)SHR32(EXTEND32(follower[i])*width/6,DB_SHIFT);
             boost_bits = boost*6<<BITRES;
          }
-         /* For CBR and non-transient CVBR frames, limit dynalloc to 1/4 of the bits */
+         /* For CBR and non-transient CVBR frames, limit dynalloc to 2/3 of the bits */
          if ((!vbr || (constrained_vbr&&!isTransient))
-               && (tot_boost+boost_bits)>>BITRES>>3 > effectiveBytes/4)
+               && (tot_boost+boost_bits)>>BITRES>>3 > 2*effectiveBytes/3)
          {
-            opus_int32 cap = ((effectiveBytes/4)<<BITRES<<3);
+            opus_int32 cap = ((2*effectiveBytes/3)<<BITRES<<3);
             offsets[i] = cap-tot_boost;
             tot_boost = cap;
             break;
@@ -1055,6 +1152,9 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
             tot_boost += boost_bits;
          }
       }
+   } else {
+      for (i=start;i<end;i++)
+         importance[i] = 13;
    }
    *tot_boost_ = tot_boost;
    RESTORE_STACK;
@@ -1063,7 +1163,7 @@ static opus_val16 dynalloc_analysis(const opus_val16 *bandLogE, const opus_val16
 
 
 static int run_prefilter(CELTEncoder *st, celt_sig *in, celt_sig *prefilter_mem, int CC, int N,
-      int prefilter_tapset, int *pitch, opus_val16 *gain, int *qgain, int enabled, int nbAvailableBytes)
+      int prefilter_tapset, int *pitch, opus_val16 *gain, int *qgain, int enabled, int nbAvailableBytes, AnalysisInfo *analysis)
 {
    int c;
    VARDECL(celt_sig, _pre);
@@ -1119,7 +1219,12 @@ static int run_prefilter(CELTEncoder *st, celt_sig *in, celt_sig *prefilter_mem,
       gain1 = 0;
       pitch_index = COMBFILTER_MINPERIOD;
    }
-
+#ifndef DISABLE_FLOAT_API
+   if (analysis->valid)
+      gain1 = (opus_val16)(gain1 * analysis->max_pitch_ratio);
+#else
+   (void)analysis;
+#endif
    /* Gain threshold for enabling the prefilter/postfilter */
    pf_threshold = QCONST16(.2f,15);
 
@@ -1175,10 +1280,10 @@ static int run_prefilter(CELTEncoder *st, celt_sig *in, celt_sig *prefilter_mem,
 
       if (N>COMBFILTER_MAXPERIOD)
       {
-         OPUS_MOVE(prefilter_mem+c*COMBFILTER_MAXPERIOD, pre[c]+N, COMBFILTER_MAXPERIOD);
+         OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD, pre[c]+N, COMBFILTER_MAXPERIOD);
       } else {
          OPUS_MOVE(prefilter_mem+c*COMBFILTER_MAXPERIOD, prefilter_mem+c*COMBFILTER_MAXPERIOD+N, COMBFILTER_MAXPERIOD-N);
-         OPUS_MOVE(prefilter_mem+c*COMBFILTER_MAXPERIOD+COMBFILTER_MAXPERIOD-N, pre[c]+COMBFILTER_MAXPERIOD, N);
+         OPUS_COPY(prefilter_mem+c*COMBFILTER_MAXPERIOD+COMBFILTER_MAXPERIOD-N, pre[c]+COMBFILTER_MAXPERIOD, N);
       }
    } while (++c<CC);
 
@@ -1193,7 +1298,7 @@ static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32
       int LM, opus_int32 bitrate, int lastCodedBands, int C, int intensity,
       int constrained_vbr, opus_val16 stereo_saving, int tot_boost,
       opus_val16 tf_estimate, int pitch_change, opus_val16 maxDepth,
-      int variable_duration, int lfe, int has_surround_mask, opus_val16 surround_masking,
+      int lfe, int has_surround_mask, opus_val16 surround_masking,
       opus_val16 temporal_vbr)
 {
    /* The target rate in 8th bits per frame */
@@ -1235,10 +1340,9 @@ static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32
                       SHR32(MULT16_16(stereo_saving-QCONST16(0.1f,8),(coded_stereo_dof<<BITRES)),8));
    }
    /* Boost the rate according to dynalloc (minus the dynalloc average for calibration). */
-   target += tot_boost-(16<<LM);
+   target += tot_boost-(19<<LM);
    /* Apply transient boost, compensating for average boost. */
-   tf_calibration = variable_duration==OPUS_FRAMESIZE_VARIABLE ?
-                    QCONST16(0.02f,14) : QCONST16(0.04f,14);
+   tf_calibration = QCONST16(0.044f,14);
    target += (opus_int32)SHL32(MULT16_32_Q15(tf_estimate-tf_calibration, target),1);
 
 #ifndef DISABLE_FLOAT_API
@@ -1249,7 +1353,7 @@ static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32
       float tonal;
 
       /* Tonality boost (compensating for the average). */
-      tonal = MAX16(0.f,analysis->tonality-.15f)-0.09f;
+      tonal = MAX16(0.f,analysis->tonality-.15f)-0.12f;
       tonal_target = target + (opus_int32)((coded_bins<<BITRES)*1.2f*tonal);
       if (pitch_change)
          tonal_target +=  (opus_int32)((coded_bins<<BITRES)*.8f);
@@ -1279,18 +1383,11 @@ static int compute_vbr(const CELTMode *mode, AnalysisInfo *analysis, opus_int32
       /*printf("%f %d\n", maxDepth, floor_depth);*/
    }
 
-   if ((!has_surround_mask||lfe) && (constrained_vbr || bitrate<64000))
+   /* Make VBR less aggressive for constrained VBR because we can't keep a higher bitrate
+      for long. Needs tuning. */
+   if ((!has_surround_mask||lfe) && constrained_vbr)
    {
-      opus_val16 rate_factor;
-#ifdef FIXED_POINT
-      rate_factor = MAX16(0,(bitrate-32000));
-#else
-      rate_factor = MAX16(0,(1.f/32768)*(bitrate-32000));
-#endif
-      if (constrained_vbr)
-         rate_factor = MIN16(rate_factor, QCONST16(0.67f, 15));
-      target = base_target + (opus_int32)MULT16_32_Q15(rate_factor, target-base_target);
-
+      target = base_target + (opus_int32)MULT16_32_Q15(QCONST16(0.67f, 15), target-base_target);
    }
 
    if (!has_surround_mask && tf_estimate < QCONST16(.2f, 14))
@@ -1324,11 +1421,13 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    VARDECL(int, pulses);
    VARDECL(int, cap);
    VARDECL(int, offsets);
+   VARDECL(int, importance);
+   VARDECL(int, spread_weight);
    VARDECL(int, fine_priority);
    VARDECL(int, tf_res);
    VARDECL(unsigned char, collapse_masks);
    celt_sig *prefilter_mem;
-   opus_val16 *oldBandE, *oldLogE, *oldLogE2;
+   opus_val16 *oldBandE, *oldLogE, *oldLogE2, *energyError;
    int shortBlocks=0;
    int isTransient=0;
    const int CC = st->channels;
@@ -1340,7 +1439,6 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    int end;
    int effEnd;
    int codedBands;
-   int tf_sum;
    int alloc_trim;
    int pitch_index=COMBFILTER_MINPERIOD;
    opus_val16 gain1 = 0;
@@ -1352,6 +1450,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    opus_int32 total_boost;
    opus_int32 balance;
    opus_int32 tell;
+   opus_int32 tell0_frac;
    int prefilter_tapset=0;
    int pf_on;
    int anti_collapse_rsv;
@@ -1373,7 +1472,10 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    opus_val16 surround_masking=0;
    opus_val16 temporal_vbr=0;
    opus_val16 surround_trim = 0;
-   opus_int32 equiv_rate = 510000;
+   opus_int32 equiv_rate;
+   int hybrid;
+   int weak_transient = 0;
+   int enable_tf_analysis;
    VARDECL(opus_val16, surround_dynalloc);
    ALLOC_STACK;
 
@@ -1383,6 +1485,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    eBands = mode->eBands;
    start = st->start;
    end = st->end;
+   hybrid = start != 0;
    tf_estimate = 0;
    if (nbCompressedBytes<2 || pcm==NULL)
    {
@@ -1406,12 +1509,14 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    oldBandE = (opus_val16*)(st->in_mem+CC*(overlap+COMBFILTER_MAXPERIOD));
    oldLogE = oldBandE + CC*nbEBands;
    oldLogE2 = oldLogE + CC*nbEBands;
+   energyError = oldLogE2 + CC*nbEBands;
 
    if (enc==NULL)
    {
-      tell=1;
+      tell0_frac=tell=1;
       nbFilledBytes=0;
    } else {
+      tell0_frac=ec_tell_frac(enc);
       tell=ec_tell(enc);
       nbFilledBytes=(tell+4)>>3;
    }
@@ -1464,10 +1569,11 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
       if (st->bitrate!=OPUS_BITRATE_MAX)
          nbCompressedBytes = IMAX(2, IMIN(nbCompressedBytes,
                (tmp+4*mode->Fs)/(8*mode->Fs)-!!st->signalling));
-      effectiveBytes = nbCompressedBytes;
+      effectiveBytes = nbCompressedBytes - nbFilledBytes;
    }
+   equiv_rate = ((opus_int32)nbCompressedBytes*8*50 >> (3-LM)) - (40*C+20)*((400>>LM) - 50);
    if (st->bitrate != OPUS_BITRATE_MAX)
-      equiv_rate = st->bitrate - (40*C+20)*((400>>LM) - 50);
+      equiv_rate = IMIN(equiv_rate, st->bitrate - (40*C+20)*((400>>LM) - 50));
 
    if (enc==NULL)
    {
@@ -1555,17 +1661,17 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    {
       int enabled;
       int qg;
-      enabled = ((st->lfe&&nbAvailableBytes>3) || nbAvailableBytes>12*C) && start==0 && !silence && !st->disable_pf
-            && st->complexity >= 5 && !(st->consec_transient && LM!=3 && st->variable_duration==OPUS_FRAMESIZE_VARIABLE);
+      enabled = ((st->lfe&&nbAvailableBytes>3) || nbAvailableBytes>12*C) && !hybrid && !silence && !st->disable_pf
+            && st->complexity >= 5;
 
       prefilter_tapset = st->tapset_decision;
-      pf_on = run_prefilter(st, in, prefilter_mem, CC, N, prefilter_tapset, &pitch_index, &gain1, &qg, enabled, nbAvailableBytes);
+      pf_on = run_prefilter(st, in, prefilter_mem, CC, N, prefilter_tapset, &pitch_index, &gain1, &qg, enabled, nbAvailableBytes, &st->analysis);
       if ((gain1 > QCONST16(.4f,15) || st->prefilter_gain > QCONST16(.4f,15)) && (!st->analysis.valid || st->analysis.tonality > .3)
             && (pitch_index > 1.26*st->prefilter_period || pitch_index < .79*st->prefilter_period))
          pitch_change = 1;
       if (pf_on==0)
       {
-         if(start==0 && tell+16<=total_bits)
+         if(!hybrid && tell+16<=total_bits)
             ec_enc_bit_logp(enc, 0, 1);
       } else {
          /*This block is not gated by a total bits check only because
@@ -1586,8 +1692,12 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    shortBlocks = 0;
    if (st->complexity >= 1 && !st->lfe)
    {
+      /* Reduces the likelihood of energy instability on fricatives at low bitrate
+         in hybrid mode. It seems like we still want to have real transients on vowels
+         though (small SILK quantization offset value). */
+      int allow_weak_transients = hybrid && effectiveBytes<15 && st->silk_info.signalType != 2;
       isTransient = transient_analysis(in, N+overlap, CC,
-            &tf_estimate, &tf_chan);
+            &tf_estimate, &tf_chan, allow_weak_transients, &weak_transient);
    }
    if (LM>0 && ec_tell(enc)+3<=total_bits)
    {
@@ -1607,16 +1717,19 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    if (secondMdct)
    {
       compute_mdcts(mode, 0, in, freq, C, CC, LM, st->upsample, st->arch);
-      compute_band_energies(mode, freq, bandE, effEnd, C, LM);
+      compute_band_energies(mode, freq, bandE, effEnd, C, LM, st->arch);
       amp2Log2(mode, effEnd, end, bandE, bandLogE2, C);
       for (i=0;i<C*nbEBands;i++)
          bandLogE2[i] += HALF16(SHL16(LM, DB_SHIFT));
    }
 
    compute_mdcts(mode, shortBlocks, in, freq, C, CC, LM, st->upsample, st->arch);
+   /* This should catch any NaN in the CELT input. Since we're not supposed to see any (they're filtered
+      at the Opus layer), just abort. */
+   celt_assert(!celt_isnan(freq[0]) && (C==1 || !celt_isnan(freq[N])));
    if (CC==2&&C==1)
       tf_chan = 0;
-   compute_band_energies(mode, freq, bandE, effEnd, C, LM);
+   compute_band_energies(mode, freq, bandE, effEnd, C, LM, st->arch);
 
    if (st->lfe)
    {
@@ -1631,7 +1744,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    ALLOC(surround_dynalloc, C*nbEBands, opus_val16);
    OPUS_CLEAR(surround_dynalloc, end);
    /* This computes how much masking takes place between surround channels */
-   if (start==0&&st->energy_mask&&!st->lfe)
+   if (!hybrid&&st->energy_mask&&!st->lfe)
    {
       int mask_end;
       int midband;
@@ -1733,14 +1846,14 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
 
    /* Last chance to catch any transient we might have missed in the
       time-domain analysis */
-   if (LM>0 && ec_tell(enc)+3<=total_bits && !isTransient && st->complexity>=5 && !st->lfe)
+   if (LM>0 && ec_tell(enc)+3<=total_bits && !isTransient && st->complexity>=5 && !st->lfe && !hybrid)
    {
       if (patch_transient_decision(bandLogE, oldBandE, nbEBands, start, end, C))
       {
          isTransient = 1;
          shortBlocks = M;
          compute_mdcts(mode, shortBlocks, in, freq, C, CC, LM, st->upsample, st->arch);
-         compute_band_energies(mode, freq, bandE, effEnd, C, LM);
+         compute_band_energies(mode, freq, bandE, effEnd, C, LM, st->arch);
          amp2Log2(mode, effEnd, end, bandE, bandLogE, C);
          /* Compensate for the scaling of short vs long mdcts */
          for (i=0;i<C*nbEBands;i++)
@@ -1757,31 +1870,59 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    /* Band normalisation */
    normalise_bands(mode, freq, X, bandE, effEnd, C, M);
 
+   enable_tf_analysis = effectiveBytes>=15*C && !hybrid && st->complexity>=2 && !st->lfe;
+
+   ALLOC(offsets, nbEBands, int);
+   ALLOC(importance, nbEBands, int);
+   ALLOC(spread_weight, nbEBands, int);
+
+   maxDepth = dynalloc_analysis(bandLogE, bandLogE2, nbEBands, start, end, C, offsets,
+         st->lsb_depth, mode->logN, isTransient, st->vbr, st->constrained_vbr,
+         eBands, LM, effectiveBytes, &tot_boost, st->lfe, surround_dynalloc, &st->analysis, importance, spread_weight);
+
    ALLOC(tf_res, nbEBands, int);
    /* Disable variable tf resolution for hybrid and at very low bitrate */
-   if (effectiveBytes>=15*C && start==0 && st->complexity>=2 && !st->lfe)
+   if (enable_tf_analysis)
    {
       int lambda;
-      if (effectiveBytes<40)
-         lambda = 12;
-      else if (effectiveBytes<60)
-         lambda = 6;
-      else if (effectiveBytes<100)
-         lambda = 4;
-      else
-         lambda = 3;
-      lambda*=2;
-      tf_select = tf_analysis(mode, effEnd, isTransient, tf_res, lambda, X, N, LM, &tf_sum, tf_estimate, tf_chan);
+      lambda = IMAX(80, 20480/effectiveBytes + 2);
+      tf_select = tf_analysis(mode, effEnd, isTransient, tf_res, lambda, X, N, LM, tf_estimate, tf_chan, importance);
       for (i=effEnd;i<end;i++)
          tf_res[i] = tf_res[effEnd-1];
+   } else if (hybrid && weak_transient)
+   {
+      /* For weak transients, we rely on the fact that improving time resolution using
+         TF on a long window is imperfect and will not result in an energy collapse at
+         low bitrate. */
+      for (i=0;i<end;i++)
+         tf_res[i] = 1;
+      tf_select=0;
+   } else if (hybrid && effectiveBytes<15 && st->silk_info.signalType != 2)
+   {
+      /* For low bitrate hybrid, we force temporal resolution to 5 ms rather than 2.5 ms. */
+      for (i=0;i<end;i++)
+         tf_res[i] = 0;
+      tf_select=isTransient;
    } else {
-      tf_sum = 0;
       for (i=0;i<end;i++)
          tf_res[i] = isTransient;
       tf_select=0;
    }
 
    ALLOC(error, C*nbEBands, opus_val16);
+   c=0;
+   do {
+      for (i=start;i<end;i++)
+      {
+         /* When the energy is stable, slightly bias energy quantization towards
+            the previous error to make the gain more stable (a constant offset is
+            better than fluctuations). */
+         if (ABS32(SUB32(bandLogE[i+c*nbEBands], oldBandE[i+c*nbEBands])) < QCONST16(2.f, DB_SHIFT))
+         {
+            bandLogE[i+c*nbEBands] -= MULT16_16_Q15(energyError[i+c*nbEBands], QCONST16(0.25f, 15));
+         }
+      }
+   } while (++c < C);
    quant_coarse_energy(mode, start, end, effEnd, bandLogE,
          oldBandE, total_bits, error, enc,
          C, LM, nbAvailableBytes, st->force_intra,
@@ -1795,7 +1936,15 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
       {
          st->tapset_decision = 0;
          st->spread_decision = SPREAD_NORMAL;
-      } else if (shortBlocks || st->complexity < 3 || nbAvailableBytes < 10*C || start != 0)
+      } else if (hybrid)
+      {
+         if (st->complexity == 0)
+            st->spread_decision = SPREAD_NONE;
+         else if (isTransient)
+            st->spread_decision = SPREAD_NORMAL;
+         else
+            st->spread_decision = SPREAD_AGGRESSIVE;
+      } else if (shortBlocks || st->complexity < 3 || nbAvailableBytes < 10*C)
       {
          if (st->complexity == 0)
             st->spread_decision = SPREAD_NONE;
@@ -1819,7 +1968,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
          {
             st->spread_decision = spreading_decision(mode, X,
                   &st->tonal_average, st->spread_decision, &st->hf_average,
-                  &st->tapset_decision, pf_on&&!shortBlocks, effEnd, C, M);
+                  &st->tapset_decision, pf_on&&!shortBlocks, effEnd, C, M, spread_weight);
          }
          /*printf("%d %d\n", st->tapset_decision, st->spread_decision);*/
          /*printf("%f %d %f %d\n\n", st->analysis.tonality, st->spread_decision, st->analysis.tonality_slope, st->tapset_decision);*/
@@ -1827,11 +1976,6 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
       ec_enc_icdf(enc, st->spread_decision, spread_icdf, 5);
    }
 
-   ALLOC(offsets, nbEBands, int);
-
-   maxDepth = dynalloc_analysis(bandLogE, bandLogE2, nbEBands, start, end, C, offsets,
-         st->lsb_depth, mode->logN, isTransient, st->vbr, st->constrained_vbr,
-         eBands, LM, effectiveBytes, &tot_boost, st->lfe, surround_dynalloc);
    /* For LFE, everything interesting is in the first band */
    if (st->lfe)
       offsets[0] = IMIN(8, effectiveBytes/3);
@@ -1893,12 +2037,15 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    alloc_trim = 5;
    if (tell+(6<<BITRES) <= total_bits - total_boost)
    {
-      if (st->lfe)
+      if (start > 0 || st->lfe)
+      {
+         st->stereo_saving = 0;
          alloc_trim = 5;
-      else
+      } else {
          alloc_trim = alloc_trim_analysis(mode, X, bandLogE,
             end, LM, C, N, &st->analysis, &st->stereo_saving, tf_estimate,
-            st->intensity, surround_trim, st->arch);
+            st->intensity, surround_trim, equiv_rate, st->arch);
+      }
       ec_enc_icdf(enc, alloc_trim, trim_icdf, 7);
       tell = ec_tell_frac(enc);
    }
@@ -1916,17 +2063,36 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
      /* Don't attempt to use more than 510 kb/s, even for frames smaller than 20 ms.
         The CELT allocator will just not be able to use more than that anyway. */
      nbCompressedBytes = IMIN(nbCompressedBytes,1275>>(3-LM));
+     if (!hybrid)
+     {
         base_target = vbr_rate - ((40*C+20)<<BITRES);
+     } else {
+        base_target = IMAX(0, vbr_rate - ((9*C+4)<<BITRES));
+     }
 
      if (st->constrained_vbr)
         base_target += (st->vbr_offset>>lm_diff);
 
+     if (!hybrid)
+     {
         target = compute_vbr(mode, &st->analysis, base_target, LM, equiv_rate,
            st->lastCodedBands, C, st->intensity, st->constrained_vbr,
            st->stereo_saving, tot_boost, tf_estimate, pitch_change, maxDepth,
-           st->variable_duration, st->lfe, st->energy_mask!=NULL, surround_masking,
+           st->lfe, st->energy_mask!=NULL, surround_masking,
            temporal_vbr);
-
+     } else {
+        target = base_target;
+        /* Tonal frames (offset<100) need more bits than noisy (offset>100) ones. */
+        if (st->silk_info.offset < 100) target += 12 << BITRES >> (3-LM);
+        if (st->silk_info.offset > 100) target -= 18 << BITRES >> (3-LM);
+        /* Boosting bitrate on transients and vowels with significant temporal
+           spikes. */
+        target += (opus_int32)MULT16_16_Q14(tf_estimate-QCONST16(.25f,14), (50<<BITRES));
+        /* If we have a strong transient, let's make sure it has enough bits to code
+           the first two bands, so that it can use folding rather than noise. */
+        if (tf_estimate > QCONST16(.7f,14))
+           target = IMAX(target, 50<<BITRES);
+     }
      /* The current offset is removed from the target and the space used
         so far is added*/
      target=target+tell;
@@ -1934,11 +2100,16 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
          result in the encoder running out of bits.
         The margin of 2 bytes ensures that none of the bust-prevention logic
          in the decoder will have triggered so far. */
-     min_allowed = ((tell+total_boost+(1<<(BITRES+3))-1)>>(BITRES+3)) + 2 - nbFilledBytes;
+     min_allowed = ((tell+total_boost+(1<<(BITRES+3))-1)>>(BITRES+3)) + 2;
+     /* Take into account the 37 bits we need to have left in the packet to
+        signal a redundant frame in hybrid mode. Creating a shorter packet would
+        create an entropy coder desync. */
+     if (hybrid)
+        min_allowed = IMAX(min_allowed, (tell0_frac+(37<<BITRES)+total_boost+(1<<(BITRES+3))-1)>>(BITRES+3));
 
      nbAvailableBytes = (target+(1<<(BITRES+2)))>>(BITRES+3);
      nbAvailableBytes = IMAX(min_allowed,nbAvailableBytes);
-     nbAvailableBytes = IMIN(nbCompressedBytes,nbAvailableBytes+nbFilledBytes) - nbFilledBytes;
+     nbAvailableBytes = IMIN(nbCompressedBytes,nbAvailableBytes);
 
      /* By how much did we "miss" the target on that frame */
      delta = target - vbr_rate;
@@ -1985,7 +2156,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
         st->vbr_reservoir = 0;
         /*printf ("+%d\n", adjust);*/
      }
-     nbCompressedBytes = IMIN(nbCompressedBytes,nbAvailableBytes+nbFilledBytes);
+     nbCompressedBytes = IMIN(nbCompressedBytes,nbAvailableBytes);
      /*printf("%d\n", nbCompressedBytes*50*8);*/
      /* This moves the raw bits to take into account the new compressed size */
      ec_enc_shrink(enc, nbCompressedBytes);
@@ -2020,7 +2191,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
 #endif
    if (st->lfe)
       signalBandwidth = 1;
-   codedBands = compute_allocation(mode, start, end, offsets, cap,
+   codedBands = clt_compute_allocation(mode, start, end, offsets, cap,
          alloc_trim, &st->intensity, &dual_stereo, bits, &balance, pulses,
          fine_quant, fine_priority, C, LM, enc, 1, st->lastCodedBands, signalBandwidth);
    if (st->lastCodedBands)
@@ -2035,7 +2206,7 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
    quant_all_bands(1, mode, start, end, X, C==2 ? X+N : NULL, collapse_masks,
          bandE, pulses, shortBlocks, st->spread_decision,
          dual_stereo, st->intensity, tf_res, nbCompressedBytes*(8<<BITRES)-anti_collapse_rsv,
-         balance, enc, LM, codedBands, &st->rng, st->arch);
+         balance, enc, LM, codedBands, &st->rng, st->complexity, st->arch, st->disable_inv);
 
    if (anti_collapse_rsv > 0)
    {
@@ -2046,6 +2217,14 @@ int celt_encode_with_ec(CELTEncoder * OPUS_RESTRICT st, const opus_val16 * pcm,
       ec_enc_bits(enc, anti_collapse_on, 1);
    }
    quant_energy_finalise(mode, start, end, oldBandE, error, fine_quant, fine_priority, nbCompressedBytes*8-ec_tell(enc), enc, C);
+   OPUS_CLEAR(energyError, nbEBands*CC);
+   c=0;
+   do {
+      for (i=start;i<end;i++)
+      {
+         energyError[i+c*nbEBands] = MAX16(-QCONST16(0.5f, 15), MIN16(QCONST16(0.5f, 15), error[i+c*nbEBands]));
+      }
+   } while (++c < C);
 
    if (silence)
    {
@@ -2318,10 +2497,24 @@ int opus_custom_encoder_ctl(CELTEncoder * OPUS_RESTRICT st, int request, ...)
           *value=st->lsb_depth;
       }
       break;
-      case OPUS_SET_EXPERT_FRAME_DURATION_REQUEST:
+      case OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST:
       {
           opus_int32 value = va_arg(ap, opus_int32);
-          st->variable_duration = value;
+          if(value<0 || value>1)
+          {
+             goto bad_arg;
+          }
+          st->disable_inv = value;
+      }
+      break;
+      case OPUS_GET_PHASE_INVERSION_DISABLED_REQUEST:
+      {
+          opus_int32 *value = va_arg(ap, opus_int32*);
+          if (!value)
+          {
+             goto bad_arg;
+          }
+          *value = st->disable_inv;
       }
       break;
       case OPUS_RESET_STATE:
@@ -2365,6 +2558,13 @@ int opus_custom_encoder_ctl(CELTEncoder * OPUS_RESTRICT st, int request, ...)
             OPUS_COPY(&st->analysis, info, 1);
       }
       break;
+      case CELT_SET_SILK_INFO_REQUEST:
+      {
+         SILKInfo *info = va_arg(ap, SILKInfo *);
+         if (info)
+            OPUS_COPY(&st->silk_info, info, 1);
+      }
+      break;
       case CELT_GET_MODE_REQUEST:
       {
          const CELTMode ** value = va_arg(ap, const CELTMode**);

node_modules/@discordjs/opus/deps/opus/celt/celt_lpc.c

@@ -49,8 +49,7 @@ int          p
    float *lpc = _lpc;
 #endif
 
-   for (i = 0; i < p; i++)
-      lpc[i] = 0;
+   OPUS_CLEAR(lpc, p);
    if (ac[0] != 0)
    {
       for (i = 0; i < p; i++) {
@@ -90,58 +89,40 @@ int          p
 
 
 void celt_fir_c(
-         const opus_val16 *_x,
+         const opus_val16 *x,
          const opus_val16 *num,
-         opus_val16 *_y,
+         opus_val16 *y,
          int N,
          int ord,
-         opus_val16 *mem,
          int arch)
 {
    int i,j;
    VARDECL(opus_val16, rnum);
-   VARDECL(opus_val16, x);
    SAVE_STACK;
-
+   celt_assert(x != y);
    ALLOC(rnum, ord, opus_val16);
-   ALLOC(x, N+ord, opus_val16);
    for(i=0;i<ord;i++)
       rnum[i] = num[ord-i-1];
-   for(i=0;i<ord;i++)
-      x[i] = mem[ord-i-1];
-   for (i=0;i<N;i++)
-      x[i+ord]=_x[i];
-   for(i=0;i<ord;i++)
-      mem[i] = _x[N-i-1];
-#ifdef SMALL_FOOTPRINT
-   (void)arch;
-   for (i=0;i<N;i++)
-   {
-      opus_val32 sum = SHL32(EXTEND32(_x[i]), SIG_SHIFT);
-      for (j=0;j<ord;j++)
-      {
-         sum = MAC16_16(sum,rnum[j],x[i+j]);
-      }
-      _y[i] = SATURATE16(PSHR32(sum, SIG_SHIFT));
-   }
-#else
    for (i=0;i<N-3;i+=4)
    {
-      opus_val32 sum[4]={0,0,0,0};
-      xcorr_kernel(rnum, x+i, sum, ord, arch);
-      _y[i  ] = SATURATE16(ADD32(EXTEND32(_x[i  ]), PSHR32(sum[0], SIG_SHIFT)));
-      _y[i+1] = SATURATE16(ADD32(EXTEND32(_x[i+1]), PSHR32(sum[1], SIG_SHIFT)));
-      _y[i+2] = SATURATE16(ADD32(EXTEND32(_x[i+2]), PSHR32(sum[2], SIG_SHIFT)));
-      _y[i+3] = SATURATE16(ADD32(EXTEND32(_x[i+3]), PSHR32(sum[3], SIG_SHIFT)));
+      opus_val32 sum[4];
+      sum[0] = SHL32(EXTEND32(x[i  ]), SIG_SHIFT);
+      sum[1] = SHL32(EXTEND32(x[i+1]), SIG_SHIFT);
+      sum[2] = SHL32(EXTEND32(x[i+2]), SIG_SHIFT);
+      sum[3] = SHL32(EXTEND32(x[i+3]), SIG_SHIFT);
+      xcorr_kernel(rnum, x+i-ord, sum, ord, arch);
+      y[i  ] = ROUND16(sum[0], SIG_SHIFT);
+      y[i+1] = ROUND16(sum[1], SIG_SHIFT);
+      y[i+2] = ROUND16(sum[2], SIG_SHIFT);
+      y[i+3] = ROUND16(sum[3], SIG_SHIFT);
    }
    for (;i<N;i++)
    {
-      opus_val32 sum = 0;
+      opus_val32 sum = SHL32(EXTEND32(x[i]), SIG_SHIFT);
       for (j=0;j<ord;j++)
-         sum = MAC16_16(sum,rnum[j],x[i+j]);
-      _y[i] = SATURATE16(ADD32(EXTEND32(_x[i]), PSHR32(sum, SIG_SHIFT)));
+         sum = MAC16_16(sum,rnum[j],x[i+j-ord]);
+      y[i] = ROUND16(sum, SIG_SHIFT);
    }
-#endif
    RESTORE_STACK;
 }
 
@@ -167,7 +148,7 @@ void celt_iir(const opus_val32 *_x,
       {
          mem[j]=mem[j-1];
       }
-      mem[0] = ROUND16(sum,SIG_SHIFT);
+      mem[0] = SROUND16(sum, SIG_SHIFT);
       _y[i] = sum;
    }
 #else
@@ -196,20 +177,20 @@ void celt_iir(const opus_val32 *_x,
       xcorr_kernel(rden, y+i, sum, ord, arch);
 
       /* Patch up the result to compensate for the fact that this is an IIR */
-      y[i+ord  ] = -ROUND16(sum[0],SIG_SHIFT);
+      y[i+ord  ] = -SROUND16(sum[0],SIG_SHIFT);
       _y[i  ] = sum[0];
       sum[1] = MAC16_16(sum[1], y[i+ord  ], den[0]);
-      y[i+ord+1] = -ROUND16(sum[1],SIG_SHIFT);
+      y[i+ord+1] = -SROUND16(sum[1],SIG_SHIFT);
       _y[i+1] = sum[1];
       sum[2] = MAC16_16(sum[2], y[i+ord+1], den[0]);
       sum[2] = MAC16_16(sum[2], y[i+ord  ], den[1]);
-      y[i+ord+2] = -ROUND16(sum[2],SIG_SHIFT);
+      y[i+ord+2] = -SROUND16(sum[2],SIG_SHIFT);
       _y[i+2] = sum[2];
 
       sum[3] = MAC16_16(sum[3], y[i+ord+2], den[0]);
       sum[3] = MAC16_16(sum[3], y[i+ord+1], den[1]);
       sum[3] = MAC16_16(sum[3], y[i+ord  ], den[2]);
-      y[i+ord+3] = -ROUND16(sum[3],SIG_SHIFT);
+      y[i+ord+3] = -SROUND16(sum[3],SIG_SHIFT);
       _y[i+3] = sum[3];
    }
    for (;i<N;i++)
@@ -217,7 +198,7 @@ void celt_iir(const opus_val32 *_x,
       opus_val32 sum = _x[i];
       for (j=0;j<ord;j++)
          sum -= MULT16_16(rden[j],y[i+j]);
-      y[i+ord] = ROUND16(sum,SIG_SHIFT);
+      y[i+ord] = SROUND16(sum,SIG_SHIFT);
       _y[i] = sum;
    }
    for(i=0;i<ord;i++)

node_modules/@discordjs/opus/deps/opus/celt/celt_lpc.h

@@ -45,12 +45,11 @@ void celt_fir_c(
          opus_val16 *y,
          int N,
          int ord,
-         opus_val16 *mem,
          int arch);
 
 #if !defined(OVERRIDE_CELT_FIR)
-#define celt_fir(x, num, y, N, ord, mem, arch) \
-    (celt_fir_c(x, num, y, N, ord, mem, arch))
+#define celt_fir(x, num, y, N, ord, arch) \
+    (celt_fir_c(x, num, y, N, ord, arch))
 #endif
 
 void celt_iir(const opus_val32 *x,

node_modules/@discordjs/opus/deps/opus/celt/cwrs.c

@@ -74,7 +74,7 @@ int log2_frac(opus_uint32 val, int frac)
 /*Although derived separately, the pulse vector coding scheme is equivalent to
    a Pyramid Vector Quantizer \cite{Fis86}.
   Some additional notes about an early version appear at
-   http://people.xiph.org/~tterribe/notes/cwrs.html, but the codebook ordering
+   https://people.xiph.org/~tterribe/notes/cwrs.html, but the codebook ordering
    and the definitions of some terms have evolved since that was written.
 
   The conversion from a pulse vector to an integer index (encoding) and back
@@ -482,7 +482,7 @@ static opus_val32 cwrsi(int _n,int _k,opus_uint32 _i,int *_y){
       k0=_k;
       q=row[_n];
       if(q>_i){
-        celt_assert(p>q);
+        celt_sig_assert(p>q);
         _k=_n;
         do p=CELT_PVQ_U_ROW[--_k][_n];
         while(p>_i);

node_modules/@discordjs/opus/deps/opus/celt/entcode.h

@@ -122,7 +122,7 @@ opus_uint32 ec_tell_frac(ec_ctx *_this);
 
 /* Tested exhaustively for all n and for 1<=d<=256 */
 static OPUS_INLINE opus_uint32 celt_udiv(opus_uint32 n, opus_uint32 d) {
-   celt_assert(d>0);
+   celt_sig_assert(d>0);
 #ifdef USE_SMALL_DIV_TABLE
    if (d>256)
       return n/d;
@@ -138,7 +138,7 @@ static OPUS_INLINE opus_uint32 celt_udiv(opus_uint32 n, opus_uint32 d) {
 }
 
 static OPUS_INLINE opus_int32 celt_sudiv(opus_int32 n, opus_int32 d) {
-   celt_assert(d>0);
+   celt_sig_assert(d>0);
 #ifdef USE_SMALL_DIV_TABLE
    if (n<0)
       return -(opus_int32)celt_udiv(-n, d);

node_modules/@discordjs/opus/deps/opus/celt/entdec.h

@@ -85,7 +85,7 @@ int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb);
   The bits must have been encoded with ec_enc_uint().
   No call to ec_dec_update() is necessary after this call.
   _ft: The number of integers that can be decoded (one more than the max).
-       This must be at least one, and no more than 2**32-1.
+       This must be at least 2, and no more than 2**32-1.
   Return: The decoded bits.*/
 opus_uint32 ec_dec_uint(ec_dec *_this,opus_uint32 _ft);
 

node_modules/@discordjs/opus/deps/opus/celt/entenc.h

@@ -67,7 +67,7 @@ void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb);
 /*Encodes a raw unsigned integer in the stream.
   _fl: The integer to encode.
   _ft: The number of integers that can be encoded (one more than the max).
-       This must be at least one, and no more than 2**32-1.*/
+       This must be at least 2, and no more than 2**32-1.*/
 void ec_enc_uint(ec_enc *_this,opus_uint32 _fl,opus_uint32 _ft);
 
 /*Encodes a sequence of raw bits in the stream.

node_modules/@discordjs/opus/deps/opus/celt/fixed_debug.h

@@ -59,6 +59,14 @@ extern opus_int64 celt_mips;
 #define SHR(a,b) SHR32(a,b)
 #define PSHR(a,b) PSHR32(a,b)
 
+/** Add two 32-bit values, ignore any overflows */
+#define ADD32_ovflw(a,b) (celt_mips+=2,(opus_val32)((opus_uint32)(a)+(opus_uint32)(b)))
+/** Subtract two 32-bit values, ignore any overflows */
+#define SUB32_ovflw(a,b) (celt_mips+=2,(opus_val32)((opus_uint32)(a)-(opus_uint32)(b)))
+/* Avoid MSVC warning C4146: unary minus operator applied to unsigned type */
+/** Negate 32-bit value, ignore any overflows */
+#define NEG32_ovflw(a) (celt_mips+=2,(opus_val32)(0-(opus_uint32)(a)))
+
 static OPUS_INLINE short NEG16(int x)
 {
    int res;
@@ -227,12 +235,11 @@ static OPUS_INLINE int SHL32_(opus_int64 a, int shift, char *file, int line)
 #define VSHR32(a, shift) (((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift)))
 
 #define ROUND16(x,a) (celt_mips--,EXTRACT16(PSHR32((x),(a))))
+#define SROUND16(x,a) (celt_mips--,EXTRACT16(SATURATE(PSHR32(x,a), 32767)));
+
 #define HALF16(x)  (SHR16(x,1))
 #define HALF32(x)  (SHR32(x,1))
 
-//#define SHR(a,shift) ((a) >> (shift))
-//#define SHL(a,shift) ((a) << (shift))
-
 #define ADD16(a, b) ADD16_(a, b, __FILE__, __LINE__)
 static OPUS_INLINE short ADD16_(int a, int b, char *file, int line)
 {

node_modules/@discordjs/opus/deps/opus/celt/fixed_generic.h

@@ -37,16 +37,32 @@
 #define MULT16_16SU(a,b) ((opus_val32)(opus_val16)(a)*(opus_val32)(opus_uint16)(b))
 
 /** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
+#if OPUS_FAST_INT64
+#define MULT16_32_Q16(a,b) ((opus_val32)SHR((opus_int64)((opus_val16)(a))*(b),16))
+#else
 #define MULT16_32_Q16(a,b) ADD32(MULT16_16((a),SHR((b),16)), SHR(MULT16_16SU((a),((b)&0x0000ffff)),16))
+#endif
 
 /** 16x32 multiplication, followed by a 16-bit shift right (round-to-nearest). Results fits in 32 bits */
+#if OPUS_FAST_INT64
+#define MULT16_32_P16(a,b) ((opus_val32)PSHR((opus_int64)((opus_val16)(a))*(b),16))
+#else
 #define MULT16_32_P16(a,b) ADD32(MULT16_16((a),SHR((b),16)), PSHR(MULT16_16SU((a),((b)&0x0000ffff)),16))
+#endif
 
 /** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
+#if OPUS_FAST_INT64
+#define MULT16_32_Q15(a,b) ((opus_val32)SHR((opus_int64)((opus_val16)(a))*(b),15))
+#else
 #define MULT16_32_Q15(a,b) ADD32(SHL(MULT16_16((a),SHR((b),16)),1), SHR(MULT16_16SU((a),((b)&0x0000ffff)),15))
+#endif
 
 /** 32x32 multiplication, followed by a 31-bit shift right. Results fits in 32 bits */
+#if OPUS_FAST_INT64
+#define MULT32_32_Q31(a,b) ((opus_val32)SHR((opus_int64)(a)*(opus_int64)(b),31))
+#else
 #define MULT32_32_Q31(a,b) ADD32(ADD32(SHL(MULT16_16(SHR((a),16),SHR((b),16)),1), SHR(MULT16_16SU(SHR((a),16),((b)&0x0000ffff)),15)), SHR(MULT16_16SU(SHR((b),16),((a)&0x0000ffff)),15))
+#endif
 
 /** Compile-time conversion of float constant to 16-bit value */
 #define QCONST16(x,bits) ((opus_val16)(.5+(x)*(((opus_val32)1)<<(bits))))
@@ -88,6 +104,9 @@
 
 /** Shift by a and round-to-neareast 32-bit value. Result is a 16-bit value */
 #define ROUND16(x,a) (EXTRACT16(PSHR32((x),(a))))
+/** Shift by a and round-to-neareast 32-bit value. Result is a saturated 16-bit value */
+#define SROUND16(x,a) EXTRACT16(SATURATE(PSHR32(x,a), 32767));
+
 /** Divide by two */
 #define HALF16(x)  (SHR16(x,1))
 #define HALF32(x)  (SHR32(x,1))
@@ -101,6 +120,14 @@
 /** Subtract two 32-bit values */
 #define SUB32(a,b) ((opus_val32)(a)-(opus_val32)(b))
 
+/** Add two 32-bit values, ignore any overflows */
+#define ADD32_ovflw(a,b) ((opus_val32)((opus_uint32)(a)+(opus_uint32)(b)))
+/** Subtract two 32-bit values, ignore any overflows */
+#define SUB32_ovflw(a,b) ((opus_val32)((opus_uint32)(a)-(opus_uint32)(b)))
+/* Avoid MSVC warning C4146: unary minus operator applied to unsigned type */
+/** Negate 32-bit value, ignore any overflows */
+#define NEG32_ovflw(a) ((opus_val32)(0-(opus_uint32)(a)))
+
 /** 16x16 multiplication where the result fits in 16 bits */
 #define MULT16_16_16(a,b)     ((((opus_val16)(a))*((opus_val16)(b))))
 

node_modules/@discordjs/opus/deps/opus/celt/float_cast.h

@@ -61,7 +61,13 @@
 **      the config.h file.
 */
 
-#if (HAVE_LRINTF)
+/* With GCC, when SSE is available, the fastest conversion is cvtss2si. */
+#if defined(__GNUC__) && defined(__SSE__)
+
+#include <xmmintrin.h>
+static OPUS_INLINE opus_int32 float2int(float x) {return _mm_cvt_ss2si(_mm_set_ss(x));}
+
+#elif defined(HAVE_LRINTF)
 
 /*      These defines enable functionality introduced with the 1999 ISO C
 **      standard. They must be defined before the inclusion of math.h to
@@ -90,10 +96,10 @@
 #include <math.h>
 #define float2int(x) lrint(x)
 
-#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && defined (_M_X64)
+#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && (defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 1))
         #include <xmmintrin.h>
 
-        __inline long int float2int(float value)
+        static __inline long int float2int(float value)
         {
                 return _mm_cvtss_si32(_mm_load_ss(&value));
         }
@@ -104,7 +110,7 @@
         **      Therefore implement OPUS_INLINE versions of these functions here.
         */
 
-        __inline long int
+        static __inline long int
         float2int (float flt)
         {       int intgr;
 

node_modules/@discordjs/opus/deps/opus/celt/kiss_fft.c

@@ -82,8 +82,8 @@ static void kf_bfly2(
          C_SUB( Fout2[0] ,  Fout[0] , t );
          C_ADDTO( Fout[0] ,  t );
 
-         t.r = S_MUL(Fout2[1].r+Fout2[1].i, tw);
-         t.i = S_MUL(Fout2[1].i-Fout2[1].r, tw);
+         t.r = S_MUL(ADD32_ovflw(Fout2[1].r, Fout2[1].i), tw);
+         t.i = S_MUL(SUB32_ovflw(Fout2[1].i, Fout2[1].r), tw);
          C_SUB( Fout2[1] ,  Fout[1] , t );
          C_ADDTO( Fout[1] ,  t );
 
@@ -92,8 +92,8 @@ static void kf_bfly2(
          C_SUB( Fout2[2] ,  Fout[2] , t );
          C_ADDTO( Fout[2] ,  t );
 
-         t.r = S_MUL(Fout2[3].i-Fout2[3].r, tw);
-         t.i = S_MUL(-Fout2[3].i-Fout2[3].r, tw);
+         t.r = S_MUL(SUB32_ovflw(Fout2[3].i, Fout2[3].r), tw);
+         t.i = S_MUL(NEG32_ovflw(ADD32_ovflw(Fout2[3].i, Fout2[3].r)), tw);
          C_SUB( Fout2[3] ,  Fout[3] , t );
          C_ADDTO( Fout[3] ,  t );
          Fout += 8;
@@ -126,10 +126,10 @@ static void kf_bfly4(
          C_ADDTO( *Fout , scratch1 );
          C_SUB( scratch1 , Fout[1] , Fout[3] );
 
-         Fout[1].r = scratch0.r + scratch1.i;
-         Fout[1].i = scratch0.i - scratch1.r;
-         Fout[3].r = scratch0.r - scratch1.i;
-         Fout[3].i = scratch0.i + scratch1.r;
+         Fout[1].r = ADD32_ovflw(scratch0.r, scratch1.i);
+         Fout[1].i = SUB32_ovflw(scratch0.i, scratch1.r);
+         Fout[3].r = SUB32_ovflw(scratch0.r, scratch1.i);
+         Fout[3].i = ADD32_ovflw(scratch0.i, scratch1.r);
          Fout+=4;
       }
    } else {
@@ -160,10 +160,10 @@ static void kf_bfly4(
             tw3 += fstride*3;
             C_ADDTO( *Fout , scratch[3] );
 
-            Fout[m].r = scratch[5].r + scratch[4].i;
-            Fout[m].i = scratch[5].i - scratch[4].r;
-            Fout[m3].r = scratch[5].r - scratch[4].i;
-            Fout[m3].i = scratch[5].i + scratch[4].r;
+            Fout[m].r = ADD32_ovflw(scratch[5].r, scratch[4].i);
+            Fout[m].i = SUB32_ovflw(scratch[5].i, scratch[4].r);
+            Fout[m3].r = SUB32_ovflw(scratch[5].r, scratch[4].i);
+            Fout[m3].i = ADD32_ovflw(scratch[5].i, scratch[4].r);
             ++Fout;
          }
       }
@@ -191,7 +191,7 @@ static void kf_bfly3(
 
    kiss_fft_cpx * Fout_beg = Fout;
 #ifdef FIXED_POINT
-   epi3.r = -16384;
+   /*epi3.r = -16384;*/ /* Unused */
    epi3.i = -28378;
 #else
    epi3 = st->twiddles[fstride*m];
@@ -212,18 +212,18 @@ static void kf_bfly3(
          tw1 += fstride;
          tw2 += fstride*2;
 
-         Fout[m].r = Fout->r - HALF_OF(scratch[3].r);
-         Fout[m].i = Fout->i - HALF_OF(scratch[3].i);
+         Fout[m].r = SUB32_ovflw(Fout->r, HALF_OF(scratch[3].r));
+         Fout[m].i = SUB32_ovflw(Fout->i, HALF_OF(scratch[3].i));
 
          C_MULBYSCALAR( scratch[0] , epi3.i );
 
          C_ADDTO(*Fout,scratch[3]);
 
-         Fout[m2].r = Fout[m].r + scratch[0].i;
-         Fout[m2].i = Fout[m].i - scratch[0].r;
+         Fout[m2].r = ADD32_ovflw(Fout[m].r, scratch[0].i);
+         Fout[m2].i = SUB32_ovflw(Fout[m].i, scratch[0].r);
 
-         Fout[m].r -= scratch[0].i;
-         Fout[m].i += scratch[0].r;
+         Fout[m].r = SUB32_ovflw(Fout[m].r, scratch[0].i);
+         Fout[m].i = ADD32_ovflw(Fout[m].i, scratch[0].r);
 
          ++Fout;
       } while(--k);
@@ -282,22 +282,22 @@ static void kf_bfly5(
          C_ADD( scratch[8],scratch[2],scratch[3]);
          C_SUB( scratch[9],scratch[2],scratch[3]);
 
-         Fout0->r += scratch[7].r + scratch[8].r;
-         Fout0->i += scratch[7].i + scratch[8].i;
+         Fout0->r = ADD32_ovflw(Fout0->r, ADD32_ovflw(scratch[7].r, scratch[8].r));
+         Fout0->i = ADD32_ovflw(Fout0->i, ADD32_ovflw(scratch[7].i, scratch[8].i));
 
-         scratch[5].r = scratch[0].r + S_MUL(scratch[7].r,ya.r) + S_MUL(scratch[8].r,yb.r);
-         scratch[5].i = scratch[0].i + S_MUL(scratch[7].i,ya.r) + S_MUL(scratch[8].i,yb.r);
+         scratch[5].r = ADD32_ovflw(scratch[0].r, ADD32_ovflw(S_MUL(scratch[7].r,ya.r), S_MUL(scratch[8].r,yb.r)));
+         scratch[5].i = ADD32_ovflw(scratch[0].i, ADD32_ovflw(S_MUL(scratch[7].i,ya.r), S_MUL(scratch[8].i,yb.r)));
 
-         scratch[6].r =  S_MUL(scratch[10].i,ya.i) + S_MUL(scratch[9].i,yb.i);
-         scratch[6].i = -S_MUL(scratch[10].r,ya.i) - S_MUL(scratch[9].r,yb.i);
+         scratch[6].r =  ADD32_ovflw(S_MUL(scratch[10].i,ya.i), S_MUL(scratch[9].i,yb.i));
+         scratch[6].i = NEG32_ovflw(ADD32_ovflw(S_MUL(scratch[10].r,ya.i), S_MUL(scratch[9].r,yb.i)));
 
          C_SUB(*Fout1,scratch[5],scratch[6]);
          C_ADD(*Fout4,scratch[5],scratch[6]);
 
-         scratch[11].r = scratch[0].r + S_MUL(scratch[7].r,yb.r) + S_MUL(scratch[8].r,ya.r);
-         scratch[11].i = scratch[0].i + S_MUL(scratch[7].i,yb.r) + S_MUL(scratch[8].i,ya.r);
-         scratch[12].r = - S_MUL(scratch[10].i,yb.i) + S_MUL(scratch[9].i,ya.i);
-         scratch[12].i = S_MUL(scratch[10].r,yb.i) - S_MUL(scratch[9].r,ya.i);
+         scratch[11].r = ADD32_ovflw(scratch[0].r, ADD32_ovflw(S_MUL(scratch[7].r,yb.r), S_MUL(scratch[8].r,ya.r)));
+         scratch[11].i = ADD32_ovflw(scratch[0].i, ADD32_ovflw(S_MUL(scratch[7].i,yb.r), S_MUL(scratch[8].i,ya.r)));
+         scratch[12].r = SUB32_ovflw(S_MUL(scratch[9].i,ya.i), S_MUL(scratch[10].i,yb.i));
+         scratch[12].i = SUB32_ovflw(S_MUL(scratch[10].r,yb.i), S_MUL(scratch[9].r,ya.i));
 
          C_ADD(*Fout2,scratch[11],scratch[12]);
          C_SUB(*Fout3,scratch[11],scratch[12]);

node_modules/@discordjs/opus/deps/opus/celt/mathops.c

@@ -38,7 +38,8 @@
 #include "mathops.h"
 
 /*Compute floor(sqrt(_val)) with exact arithmetic.
-  This has been tested on all possible 32-bit inputs.*/
+  _val must be greater than 0.
+  This has been tested on all possible 32-bit inputs greater than 0.*/
 unsigned isqrt32(opus_uint32 _val){
   unsigned b;
   unsigned g;
@@ -164,7 +165,7 @@ opus_val16 celt_cos_norm(opus_val32 x)
       {
          return _celt_cos_pi_2(EXTRACT16(x));
       } else {
-         return NEG32(_celt_cos_pi_2(EXTRACT16(65536-x)));
+         return NEG16(_celt_cos_pi_2(EXTRACT16(65536-x)));
       }
    } else {
       if (x&0x0000ffff)
@@ -182,7 +183,7 @@ opus_val32 celt_rcp(opus_val32 x)
    int i;
    opus_val16 n;
    opus_val16 r;
-   celt_assert2(x>0, "celt_rcp() only defined for positive values");
+   celt_sig_assert(x>0);
    i = celt_ilog2(x);
    /* n is Q15 with range [0,1). */
    n = VSHR32(x,i-15)-32768;

node_modules/@discordjs/opus/deps/opus/celt/mathops.h

@@ -38,11 +38,44 @@
 #include "entcode.h"
 #include "os_support.h"
 
+#define PI 3.141592653f
+
 /* Multiplies two 16-bit fractional values. Bit-exactness of this macro is important */
 #define FRAC_MUL16(a,b) ((16384+((opus_int32)(opus_int16)(a)*(opus_int16)(b)))>>15)
 
 unsigned isqrt32(opus_uint32 _val);
 
+/* CELT doesn't need it for fixed-point, by analysis.c does. */
+#if !defined(FIXED_POINT) || defined(ANALYSIS_C)
+#define cA 0.43157974f
+#define cB 0.67848403f
+#define cC 0.08595542f
+#define cE ((float)PI/2)
+static OPUS_INLINE float fast_atan2f(float y, float x) {
+   float x2, y2;
+   x2 = x*x;
+   y2 = y*y;
+   /* For very small values, we don't care about the answer, so
+      we can just return 0. */
+   if (x2 + y2 < 1e-18f)
+   {
+      return 0;
+   }
+   if(x2<y2){
+      float den = (y2 + cB*x2) * (y2 + cC*x2);
+      return -x*y*(y2 + cA*x2) / den + (y<0 ? -cE : cE);
+   }else{
+      float den = (x2 + cB*y2) * (x2 + cC*y2);
+      return  x*y*(x2 + cA*y2) / den + (y<0 ? -cE : cE) - (x*y<0 ? -cE : cE);
+   }
+}
+#undef cA
+#undef cB
+#undef cC
+#undef cE
+#endif
+
+
 #ifndef OVERRIDE_CELT_MAXABS16
 static OPUS_INLINE opus_val32 celt_maxabs16(const opus_val16 *x, int len)
 {
@@ -80,7 +113,6 @@ static OPUS_INLINE opus_val32 celt_maxabs32(const opus_val32 *x, int len)
 
 #ifndef FIXED_POINT
 
-#define PI 3.141592653f
 #define celt_sqrt(x) ((float)sqrt(x))
 #define celt_rsqrt(x) (1.f/celt_sqrt(x))
 #define celt_rsqrt_norm(x) (celt_rsqrt(x))
@@ -147,7 +179,7 @@ static OPUS_INLINE float celt_exp2(float x)
 /** Integer log in base2. Undefined for zero and negative numbers */
 static OPUS_INLINE opus_int16 celt_ilog2(opus_int32 x)
 {
-   celt_assert2(x>0, "celt_ilog2() only defined for strictly positive numbers");
+   celt_sig_assert(x>0);
    return EC_ILOG(x)-1;
 }
 #endif

node_modules/@discordjs/opus/deps/opus/celt/mdct.c

@@ -270,8 +270,8 @@ void clt_mdct_backward_c(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_sca
          int rev;
          kiss_fft_scalar yr, yi;
          rev = *bitrev++;
-         yr = S_MUL(*xp2, t[i]) + S_MUL(*xp1, t[N4+i]);
-         yi = S_MUL(*xp1, t[i]) - S_MUL(*xp2, t[N4+i]);
+         yr = ADD32_ovflw(S_MUL(*xp2, t[i]), S_MUL(*xp1, t[N4+i]));
+         yi = SUB32_ovflw(S_MUL(*xp1, t[i]), S_MUL(*xp2, t[N4+i]));
          /* We swap real and imag because we use an FFT instead of an IFFT. */
          yp[2*rev+1] = yr;
          yp[2*rev] = yi;
@@ -301,8 +301,8 @@ void clt_mdct_backward_c(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_sca
          t0 = t[i];
          t1 = t[N4+i];
          /* We'd scale up by 2 here, but instead it's done when mixing the windows */
-         yr = S_MUL(re,t0) + S_MUL(im,t1);
-         yi = S_MUL(re,t1) - S_MUL(im,t0);
+         yr = ADD32_ovflw(S_MUL(re,t0), S_MUL(im,t1));
+         yi = SUB32_ovflw(S_MUL(re,t1), S_MUL(im,t0));
          /* We swap real and imag because we're using an FFT instead of an IFFT. */
          re = yp1[1];
          im = yp1[0];
@@ -312,8 +312,8 @@ void clt_mdct_backward_c(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_sca
          t0 = t[(N4-i-1)];
          t1 = t[(N2-i-1)];
          /* We'd scale up by 2 here, but instead it's done when mixing the windows */
-         yr = S_MUL(re,t0) + S_MUL(im,t1);
-         yi = S_MUL(re,t1) - S_MUL(im,t0);
+         yr = ADD32_ovflw(S_MUL(re,t0), S_MUL(im,t1));
+         yi = SUB32_ovflw(S_MUL(re,t1), S_MUL(im,t0));
          yp1[0] = yr;
          yp0[1] = yi;
          yp0 += 2;
@@ -333,8 +333,8 @@ void clt_mdct_backward_c(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_sca
          kiss_fft_scalar x1, x2;
          x1 = *xp1;
          x2 = *yp1;
-         *yp1++ = MULT16_32_Q15(*wp2, x2) - MULT16_32_Q15(*wp1, x1);
-         *xp1-- = MULT16_32_Q15(*wp1, x2) + MULT16_32_Q15(*wp2, x1);
+         *yp1++ = SUB32_ovflw(MULT16_32_Q15(*wp2, x2), MULT16_32_Q15(*wp1, x1));
+         *xp1-- = ADD32_ovflw(MULT16_32_Q15(*wp1, x2), MULT16_32_Q15(*wp2, x1));
          wp1++;
          wp2--;
       }

node_modules/@discordjs/opus/deps/opus/celt/mips/celt_mipsr1.h

@@ -53,6 +53,7 @@
 #include "celt_lpc.h"
 #include "vq.h"
 
+#define OVERRIDE_COMB_FILTER_CONST
 #define OVERRIDE_comb_filter
 void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
       opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,