Modules

node_modules/node-opus/test/Decoder.js

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+
+var ogg = require( 'ogg' );
+var util = require( 'util' );
+var opus = require( '../' );
+var path = require( 'path' );
+var streamEqual = require( 'stream-equal' );
+var fs = require( 'fs' );
+
+describe( 'Decoder', function() {
+
+    var SERIALNO = 1;
+
+    [ 'random', 'sine' ].forEach( function( file ) {
+    [ 8000, 48000 ].forEach( function( hzEncode ) {
+    [ 1, 2 ].forEach( function( chanEncode ) {
+    [ 8000, 48000 ].forEach( function( hzDecode ) {
+    [ 1, 2 ].forEach( function( chanDecode ) {
+
+            it( util.format(
+                    'should decode %d:%d %s audio in %d:%d Hz',
+                    hzEncode, chanEncode, file, hzDecode, chanDecode ),
+                function( done ) {
+
+
+                var inputPath = path.join(
+                        path.basename( __dirname ),
+                        'data',
+                        util.format( '%s-%d-%d-%d.opus',
+                            file, hzEncode, chanEncode, 20 ) );
+                var input = fs.createReadStream( inputPath );
+
+                var refPath = path.join(
+                        path.basename( __dirname ),
+                        'data',
+                        util.format( '%s-%d-%d-%d-%d-%d.raw',
+                            file, hzEncode, chanEncode, 20,
+                            hzDecode, chanDecode ) );
+                var reference = fs.createReadStream( refPath );
+
+                var decoder = new opus.Decoder( hzDecode, chanDecode );
+                var oggDecoder = new ogg.Decoder();
+                oggDecoder.on( 'stream', function( stream ) {
+
+                    // Workaround to Node issue #24915
+                    // https://github.com/nodejs/node/issues/24915
+                    stream._readableState.highWaterMark = 1;
+
+                    stream.pipe( decoder );
+                });
+
+                input.pipe( oggDecoder )
+
+                streamEqual( decoder, reference, function( err, equal ) {
+                    if( err )
+                        throw err;
+
+                    if( ! equal ) {
+                        throw new Error( util.format(
+                                "Streams not equal (%s, %d:%d, %d:%d)",
+                                file, hzEncode, chanEncode,
+                                hzDecode, chanDecode ) );
+                    }
+
+                    done();
+                } );
+
+        } );
+    } ) } ) } ) } ) } );
+} );

node_modules/node-opus/test/Encoder.js

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+
+require( 'chai' ).should();
+var ogg = require( 'ogg' );
+var util = require( 'util' );
+var opus = require( '../' );
+var path = require( 'path' );
+var streamEqual = require( 'stream-equal' );
+var fs = require( 'fs' );
+
+describe( 'Encoder', function() {
+
+    var SERIALNO = 1;
+
+    [ 'random', 'sine' ].forEach( function( file ) {
+    [ 8000, 48000 ].forEach( function( hz ) {
+    [ 1, 2 ].forEach( function( channels ) {
+
+            it( util.format(
+                    'should encode %d Hz, %d channel %s audio',
+                    hz, channels, file ),
+                function( done ) {
+
+
+                var inputPath = path.join(
+                        path.basename( __dirname ),
+                        'data',
+                        util.format( '%s.raw', file ) );
+                var input = fs.createReadStream( inputPath );
+
+                var refPath = path.join(
+                        path.basename( __dirname ),
+                        'data',
+                        util.format( '%s-%d-%d-%d.opus',
+                            file, hz, channels, 20 ) );
+                var reference = fs.createReadStream( refPath );
+
+                var bytes = hz * 20 / 1000;
+                var encoder = new opus.Encoder( hz, channels, bytes );
+                var oggEncoder = new ogg.Encoder();
+
+                input.pipe( encoder ).pipe( oggEncoder.stream( SERIALNO ) );
+
+                streamEqual( oggEncoder, reference, function( err, equal ) {
+                    if( err )
+                        throw err;
+                    equal.should.be.true;
+                    done();
+                } );
+
+        } );
+    } ) } ) } );
+} );

node_modules/node-opus/test/data/README.md

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+## Test data
+
+These files are used as the reference data for the tests.
+
+They are generated with the `generate_data.sh` script.
+
+Note: The `generate_data.sh` script should NOT be invoked without first
+verifying that the current functionality is flawless. Generating new test files
+will essentially test the current implementation against itself.
+
+These tests will detect whether there are changes in the bitstreams but they
+will NOT detect whether the current functionality matches the OPUS spec.

node_modules/node-opus/test/data/generate_audio.sh

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+#!/bin/sh
+
+OPUSENC="../../bin/opusenc-js.js --serial 1"
+OPUSDEC="../../bin/opusdec-js.js"
+
+sox -n -c 1 -b 16 -e unsigned -r 48000 sine.raw synth 0.1 sine 500 gain -0.01
+dd if=/dev/urandom bs=1024 count=64 of=random.raw
+
+$OPUSENC --raw-chan 1 --raw-rate 48000 random.raw random-48000-1-20.opus
+$OPUSENC --raw-chan 2 --raw-rate 48000 random.raw random-48000-2-20.opus
+
+$OPUSENC --raw-chan 1 --raw-rate 8000 random.raw random-8000-1-20.opus
+$OPUSENC --raw-chan 2 --raw-rate 8000 random.raw random-8000-2-20.opus
+
+$OPUSENC --raw-chan 1 --raw-rate 48000 sine.raw sine-48000-1-20.opus
+$OPUSENC --raw-chan 2 --raw-rate 48000 sine.raw sine-48000-2-20.opus
+
+$OPUSENC --raw-chan 1 --raw-rate 8000 sine.raw sine-8000-1-20.opus
+$OPUSENC --raw-chan 2 --raw-rate 8000 sine.raw sine-8000-2-20.opus
+
+
+$OPUSDEC --rate 48000 --channels 2 random-48000-1-20.opus random-48000-1-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 random-48000-2-20.opus random-48000-2-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 random-8000-1-20.opus random-8000-1-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 random-8000-2-20.opus random-8000-2-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 1 random-48000-1-20.opus random-48000-1-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 random-48000-2-20.opus random-48000-2-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 random-8000-1-20.opus random-8000-1-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 random-8000-2-20.opus random-8000-2-20-48000-1.raw
+
+$OPUSDEC --rate 8000 --channels 2 random-48000-1-20.opus random-48000-1-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 random-48000-2-20.opus random-48000-2-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 random-8000-1-20.opus random-8000-1-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 random-8000-2-20.opus random-8000-2-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 1 random-48000-1-20.opus random-48000-1-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 random-48000-2-20.opus random-48000-2-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 random-8000-1-20.opus random-8000-1-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 random-8000-2-20.opus random-8000-2-20-8000-1.raw
+
+$OPUSDEC --rate 48000 --channels 2 sine-48000-1-20.opus sine-48000-1-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 sine-48000-2-20.opus sine-48000-2-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 sine-8000-1-20.opus sine-8000-1-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 2 sine-8000-2-20.opus sine-8000-2-20-48000-2.raw
+$OPUSDEC --rate 48000 --channels 1 sine-48000-1-20.opus sine-48000-1-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 sine-48000-2-20.opus sine-48000-2-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 sine-8000-1-20.opus sine-8000-1-20-48000-1.raw
+$OPUSDEC --rate 48000 --channels 1 sine-8000-2-20.opus sine-8000-2-20-48000-1.raw
+
+$OPUSDEC --rate 8000 --channels 2 sine-48000-1-20.opus sine-48000-1-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 sine-48000-2-20.opus sine-48000-2-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 sine-8000-1-20.opus sine-8000-1-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 2 sine-8000-2-20.opus sine-8000-2-20-8000-2.raw
+$OPUSDEC --rate 8000 --channels 1 sine-48000-1-20.opus sine-48000-1-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 sine-48000-2-20.opus sine-48000-2-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 sine-8000-1-20.opus sine-8000-1-20-8000-1.raw
+$OPUSDEC --rate 8000 --channels 1 sine-8000-2-20.opus sine-8000-2-20-8000-1.raw

node_modules/node-opus/test/old/app.js

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+
+"use strict";
+
+var opus = require('../../');
+var fs = require('fs');
+
+//
+// Generate a sin tone.
+//
+var freq = 123;
+var time = 5;
+var rate = 48000;
+
+// Allocate a buffer for the tone. We use 16-bit samples.
+var samples = rate*time;
+var length = samples*2;
+var b = Buffer.alloc(length);
+
+// Generate the tone.
+for( var i = 0; i < rate*time; i++ ) {
+	var value = Math.round( Math.sin( 2*Math.PI*i*freq/rate ) * Math.pow( 2, 14 ) );
+	b.writeInt16LE( value, i*2 );
+}
+
+//
+// Create the encoder.
+//
+
+// Use 20ms frames.
+var frame_size = rate * 0.02;
+var encoder = new opus.OpusEncoder( rate );
+
+// Open the output streams.
+var output = fs.createWriteStream( 'out.opus' );
+var input_raw = fs.createWriteStream( 'in.pcm' );
+var output_raw = fs.createWriteStream( 'out.pcm' );
+
+var read = 0;
+while( b.length > 0 ) {
+    var size = Math.min( b.length, frame_size );
+    
+    // If the input buffer is smaller than the frame_size, copy it into a new 0-padded buffer.
+	if( size < frame_size ) {
+		var temp = Buffer.alloc( frame_size );
+        temp.fill(0);
+        b.copy( temp );
+        b = temp;
+	}
+
+    // We encode frame_size 16-bit samples. This requires a frame_size*2 buffer of bytes.
+	var bufferSize = frame_size * 2;
+	var toEncode = b.slice(0, bufferSize);
+    console.log( frame_size );
+
+    // Encode and decode.
+	var encoded = encoder.encode( toEncode );
+	var decoded = encoder.decode( encoded );
+
+    // Write the results in the output files.
+    input_raw.write( toEncode );
+    output.write( encoded );
+	output_raw.write( decoded );
+
+    // Move the buffer forward by the buffer size.
+    b = b.slice( bufferSize );
+}
+
+output.end();
+input_raw.end();
+output_raw.end();
+
+console.log( 'Wrote following files.' );
+console.log( 'in.pcm   : Input PCM signal' );
+console.log( 'out.opus : OPUS encoded input signal' );
+console.log( 'out.pcm  : Decoded PCM signal' );
+

node_modules/node-opus/test/old/decode-file.js

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+
+var ogg = require( 'ogg' );
+var opus = require( '../../' );
+
+var oggDecoder = new ogg.Decoder();
+
+oggDecoder.on( 'stream', function( stream ) {
+
+	var opusDecoder = new opus.Decoder();
+	opusDecoder.on( 'format', function( format ) {
+		opusDecoder.pipe( process.stdout );
+	});
+	opusDecoder.on( 'error', function( err ) {
+		console.log( err );
+	});
+
+	stream.pipe( opusDecoder );
+});
+
+process.stdin.pipe( oggDecoder );
+
+

node_modules/node-opus/test/old/encode-file.js

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+
+var ogg = require( 'ogg' );
+var opus = require( '../../' );
+
+var oggEncoder = new ogg.Encoder();
+var opusEncoder = new opus.Encoder();
+
+process.stdin.pipe( opusEncoder );
+opusEncoder.pipe( oggEncoder.stream() );
+oggEncoder.pipe( process.stdout );
+
+