From 088d20ab45aaf60fa610ee2dfac7933850178bad Mon Sep 17 00:00:00 2001 From: Eduard Kuzmenko Date: Fri, 12 Jun 2020 15:08:53 +0300 Subject: [PATCH] Fix start record delay --- dist-unminified/recorder.js | 2 +- dist/recorder.min.js | 2 +- src/recorder.js | 22 +++++++++++++++++++++- 3 files changed, 23 insertions(+), 3 deletions(-) diff --git a/dist-unminified/recorder.js b/dist-unminified/recorder.js index 746580c..0d39522 100644 --- a/dist-unminified/recorder.js +++ b/dist-unminified/recorder.js @@ -115,7 +115,7 @@ eval("var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn th /***/ (function(module, exports, __webpack_require__) { "use strict"; -eval("/* WEBPACK VAR INJECTION */(function(global) {\n\nvar AudioContext = global.AudioContext || global.webkitAudioContext;\n\n\n// Constructor\nvar Recorder = function( config ){\n\n if ( !Recorder.isRecordingSupported() ) {\n throw new Error(\"Recording is not supported in this browser\");\n }\n\n if ( !config ) config = {};\n\n this.state = \"inactive\";\n this.config = Object.assign({\n bufferLength: 4096,\n encoderApplication: 2049,\n encoderFrameSize: 20,\n encoderPath: 'encoderWorker.min.js',\n encoderSampleRate: 48000,\n maxFramesPerPage: 40,\n mediaTrackConstraints: true,\n monitorGain: 0,\n numberOfChannels: 1,\n recordingGain: 1,\n resampleQuality: 3,\n streamPages: false,\n reuseWorker: false,\n wavBitDepth: 16,\n }, config );\n\n this.encodedSamplePosition = 0;\n};\n\n\n// Static Methods\nRecorder.isRecordingSupported = function(){\n return AudioContext && global.navigator && global.navigator.mediaDevices && global.navigator.mediaDevices.getUserMedia && global.WebAssembly;\n};\n\n\n// Instance Methods\nRecorder.prototype.clearStream = function(){\n if ( this.stream ){\n\n if ( this.stream.getTracks ) {\n this.stream.getTracks().forEach( function( track ){\n track.stop();\n });\n }\n\n else {\n this.stream.stop();\n }\n\n delete this.stream;\n }\n\n if ( this.audioContext && this.closeAudioContext ){\n this.audioContext.close();\n delete this.audioContext;\n }\n};\n\nRecorder.prototype.encodeBuffers = function( inputBuffer ){\n if ( this.state === \"recording\" ) {\n var buffers = [];\n for ( var i = 0; i < inputBuffer.numberOfChannels; i++ ) {\n buffers[i] = inputBuffer.getChannelData(i);\n }\n\n this.encoder.postMessage({\n command: \"encode\",\n buffers: buffers\n });\n }\n};\n\nRecorder.prototype.initAudioContext = function( sourceNode ){\n if (sourceNode && sourceNode.context) {\n this.audioContext = sourceNode.context;\n this.closeAudioContext = false;\n }\n\n else {\n this.audioContext = new AudioContext();\n this.closeAudioContext = true;\n }\n\n return this.audioContext;\n};\n\nRecorder.prototype.initAudioGraph = function(){\n\n // First buffer can contain old data. Don't encode it.\n this.encodeBuffers = function(){\n delete this.encodeBuffers;\n };\n\n this.scriptProcessorNode = this.audioContext.createScriptProcessor( this.config.bufferLength, this.config.numberOfChannels, this.config.numberOfChannels );\n this.scriptProcessorNode.connect( this.audioContext.destination );\n this.scriptProcessorNode.onaudioprocess = ( e ) => {\n this.encodeBuffers( e.inputBuffer );\n };\n\n this.monitorGainNode = this.audioContext.createGain();\n this.setMonitorGain( this.config.monitorGain );\n this.monitorGainNode.connect( this.audioContext.destination );\n\n this.recordingGainNode = this.audioContext.createGain();\n this.setRecordingGain( this.config.recordingGain );\n this.recordingGainNode.connect( this.scriptProcessorNode );\n};\n\nRecorder.prototype.initSourceNode = function( sourceNode ){\n if ( sourceNode && sourceNode.context ) {\n return global.Promise.resolve( sourceNode );\n }\n\n return global.navigator.mediaDevices.getUserMedia({ audio : this.config.mediaTrackConstraints }).then( ( stream ) => {\n this.stream = stream;\n return this.audioContext.createMediaStreamSource( stream );\n });\n};\n\nRecorder.prototype.loadWorker = function() {\n if ( !this.encoder ) {\n this.encoder = new global.Worker(this.config.encoderPath);\n }\n};\n\nRecorder.prototype.initWorker = function(){\n var onPage = (this.config.streamPages ? this.streamPage : this.storePage).bind(this);\n\n this.recordedPages = [];\n this.totalLength = 0;\n this.loadWorker();\n\n return new Promise((resolve, reject) => {\n var callback = (e) => {\n switch( e['data']['message'] ){\n case 'ready':\n resolve();\n break;\n case 'page':\n this.encodedSamplePosition = e['data']['samplePosition'];\n onPage(e['data']['page']);\n break;\n case 'done':\n this.encoder.removeEventListener( \"message\", callback );\n this.finish();\n break;\n }\n };\n\n this.encoder.addEventListener( \"message\", callback );\n this.encoder.postMessage( Object.assign({\n command: 'init',\n originalSampleRate: this.audioContext.sampleRate,\n wavSampleRate: this.audioContext.sampleRate\n }, this.config));\n });\n};\n\nRecorder.prototype.pause = function( flush ) {\n if ( this.state === \"recording\" ) {\n this.state = \"paused\";\n if ( flush && this.config.streamPages ) {\n var encoder = this.encoder;\n return new Promise((resolve, reject) => {\n var callback = (e) => {\n if ( e[\"data\"][\"message\"] === 'flushed' ) {\n encoder.removeEventListener( \"message\", callback );\n this.onpause();\n resolve();\n }\n };\n encoder.addEventListener( \"message\", callback );\n encoder.postMessage( { command: \"flush\" } );\n });\n }\n this.onpause();\n return Promise.resolve();\n }\n};\n\nRecorder.prototype.resume = function() {\n if ( this.state === \"paused\" ) {\n this.state = \"recording\";\n this.onresume();\n }\n};\n\nRecorder.prototype.setRecordingGain = function( gain ){\n this.config.recordingGain = gain;\n\n if ( this.recordingGainNode && this.audioContext ) {\n this.recordingGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n }\n};\n\nRecorder.prototype.setMonitorGain = function( gain ){\n this.config.monitorGain = gain;\n\n if ( this.monitorGainNode && this.audioContext ) {\n this.monitorGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n }\n};\n\nRecorder.prototype.start = function( sourceNode ){\n if ( this.state === \"inactive\" ) {\n this.initAudioContext( sourceNode );\n this.initAudioGraph();\n\n this.encodedSamplePosition = 0;\n\n return Promise.all([this.initSourceNode(sourceNode), this.initWorker()]).then((results) => {\n this.sourceNode = results[0];\n this.state = \"recording\";\n this.onstart();\n this.encoder.postMessage({ command: 'getHeaderPages' });\n this.sourceNode.connect( this.monitorGainNode );\n this.sourceNode.connect( this.recordingGainNode );\n });\n }\n};\n\nRecorder.prototype.stop = function(){\n if ( this.state !== \"inactive\" ) {\n this.state = \"inactive\";\n this.monitorGainNode.disconnect();\n this.scriptProcessorNode.disconnect();\n this.recordingGainNode.disconnect();\n this.sourceNode.disconnect();\n this.clearStream();\n\n var encoder = this.encoder;\n return new Promise((resolve) => {\n var callback = (e) => {\n if ( e[\"data\"][\"message\"] === 'done' ) {\n encoder.removeEventListener( \"message\", callback );\n resolve();\n }\n };\n encoder.addEventListener( \"message\", callback );\n encoder.postMessage({ command: \"done\" });\n if ( !this.config.reuseWorker ) {\n encoder.postMessage({ command: \"close\" });\n }\n });\n }\n return Promise.resolve();\n};\n\nRecorder.prototype.destroyWorker = function(){\n if ( this.state === \"inactive\" ) {\n if ( this.encoder ) {\n this.encoder.postMessage({ command: \"close\" });\n delete this.encoder;\n }\n }\n};\n\nRecorder.prototype.storePage = function( page ) {\n this.recordedPages.push( page );\n this.totalLength += page.length;\n};\n\nRecorder.prototype.streamPage = function( page ) {\n this.ondataavailable( page );\n};\n\nRecorder.prototype.finish = function() {\n if( !this.config.streamPages ) {\n var outputData = new Uint8Array( this.totalLength );\n this.recordedPages.reduce( function( offset, page ){\n outputData.set( page, offset );\n return offset + page.length;\n }, 0);\n\n this.ondataavailable( outputData );\n }\n this.onstop();\n if ( !this.config.reuseWorker ) {\n delete this.encoder;\n }\n};\n\n\n// Callback Handlers\nRecorder.prototype.ondataavailable = function(){};\nRecorder.prototype.onpause = function(){};\nRecorder.prototype.onresume = function(){};\nRecorder.prototype.onstart = function(){};\nRecorder.prototype.onstop = function(){};\n\n\nmodule.exports = Recorder;\n\n/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../node_modules/webpack/buildin/global.js */ \"./node_modules/webpack/buildin/global.js\")))//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"./src/recorder.js.js","sources":["webpack://Recorder/./src/recorder.js?056f"],"sourcesContent":["\"use strict\";\n\nvar AudioContext = global.AudioContext || global.webkitAudioContext;\n\n\n// Constructor\nvar Recorder = function( config ){\n\n  if ( !Recorder.isRecordingSupported() ) {\n    throw new Error(\"Recording is not supported in this browser\");\n  }\n\n  if ( !config ) config = {};\n\n  this.state = \"inactive\";\n  this.config = Object.assign({\n    bufferLength: 4096,\n    encoderApplication: 2049,\n    encoderFrameSize: 20,\n    encoderPath: 'encoderWorker.min.js',\n    encoderSampleRate: 48000,\n    maxFramesPerPage: 40,\n    mediaTrackConstraints: true,\n    monitorGain: 0,\n    numberOfChannels: 1,\n    recordingGain: 1,\n    resampleQuality: 3,\n    streamPages: false,\n    reuseWorker: false,\n    wavBitDepth: 16,\n  }, config );\n\n  this.encodedSamplePosition = 0;\n};\n\n\n// Static Methods\nRecorder.isRecordingSupported = function(){\n  return AudioContext && global.navigator && global.navigator.mediaDevices && global.navigator.mediaDevices.getUserMedia && global.WebAssembly;\n};\n\n\n// Instance Methods\nRecorder.prototype.clearStream = function(){\n  if ( this.stream ){\n\n    if ( this.stream.getTracks ) {\n      this.stream.getTracks().forEach( function( track ){\n        track.stop();\n      });\n    }\n\n    else {\n      this.stream.stop();\n    }\n\n    delete this.stream;\n  }\n\n  if ( this.audioContext && this.closeAudioContext ){\n    this.audioContext.close();\n    delete this.audioContext;\n  }\n};\n\nRecorder.prototype.encodeBuffers = function( inputBuffer ){\n  if ( this.state === \"recording\" ) {\n    var buffers = [];\n    for ( var i = 0; i < inputBuffer.numberOfChannels; i++ ) {\n      buffers[i] = inputBuffer.getChannelData(i);\n    }\n\n    this.encoder.postMessage({\n      command: \"encode\",\n      buffers: buffers\n    });\n  }\n};\n\nRecorder.prototype.initAudioContext = function( sourceNode ){\n  if (sourceNode && sourceNode.context) {\n    this.audioContext = sourceNode.context;\n    this.closeAudioContext = false;\n  }\n\n  else {\n    this.audioContext = new AudioContext();\n    this.closeAudioContext = true;\n  }\n\n  return this.audioContext;\n};\n\nRecorder.prototype.initAudioGraph = function(){\n\n  // First buffer can contain old data. Don't encode it.\n  this.encodeBuffers = function(){\n    delete this.encodeBuffers;\n  };\n\n  this.scriptProcessorNode = this.audioContext.createScriptProcessor( this.config.bufferLength, this.config.numberOfChannels, this.config.numberOfChannels );\n  this.scriptProcessorNode.connect( this.audioContext.destination );\n  this.scriptProcessorNode.onaudioprocess = ( e ) => {\n    this.encodeBuffers( e.inputBuffer );\n  };\n\n  this.monitorGainNode = this.audioContext.createGain();\n  this.setMonitorGain( this.config.monitorGain );\n  this.monitorGainNode.connect( this.audioContext.destination );\n\n  this.recordingGainNode = this.audioContext.createGain();\n  this.setRecordingGain( this.config.recordingGain );\n  this.recordingGainNode.connect( this.scriptProcessorNode );\n};\n\nRecorder.prototype.initSourceNode = function( sourceNode ){\n  if ( sourceNode && sourceNode.context ) {\n    return global.Promise.resolve( sourceNode );\n  }\n\n  return global.navigator.mediaDevices.getUserMedia({ audio : this.config.mediaTrackConstraints }).then( ( stream ) => {\n    this.stream = stream;\n    return this.audioContext.createMediaStreamSource( stream );\n  });\n};\n\nRecorder.prototype.loadWorker = function() {\n  if ( !this.encoder ) {\n    this.encoder = new global.Worker(this.config.encoderPath);\n  }\n};\n\nRecorder.prototype.initWorker = function(){\n  var onPage = (this.config.streamPages ? this.streamPage : this.storePage).bind(this);\n\n  this.recordedPages = [];\n  this.totalLength = 0;\n  this.loadWorker();\n\n  return new Promise((resolve, reject) => {\n    var callback = (e) => {\n      switch( e['data']['message'] ){\n        case 'ready':\n          resolve();\n          break;\n        case 'page':\n          this.encodedSamplePosition = e['data']['samplePosition'];\n          onPage(e['data']['page']);\n          break;\n        case 'done':\n          this.encoder.removeEventListener( \"message\", callback );\n          this.finish();\n          break;\n      }\n    };\n\n    this.encoder.addEventListener( \"message\", callback );\n    this.encoder.postMessage( Object.assign({\n      command: 'init',\n      originalSampleRate: this.audioContext.sampleRate,\n      wavSampleRate: this.audioContext.sampleRate\n    }, this.config));\n  });\n};\n\nRecorder.prototype.pause = function( flush ) {\n  if ( this.state === \"recording\" ) {\n    this.state = \"paused\";\n    if ( flush && this.config.streamPages ) {\n      var encoder = this.encoder;\n      return new Promise((resolve, reject) => {\n        var callback = (e) => {\n          if ( e[\"data\"][\"message\"] === 'flushed' ) {\n            encoder.removeEventListener( \"message\", callback );\n            this.onpause();\n            resolve();\n          }\n        };\n        encoder.addEventListener( \"message\", callback );\n        encoder.postMessage( { command: \"flush\" } );\n      });\n    }\n    this.onpause();\n    return Promise.resolve();\n  }\n};\n\nRecorder.prototype.resume = function() {\n  if ( this.state === \"paused\" ) {\n    this.state = \"recording\";\n    this.onresume();\n  }\n};\n\nRecorder.prototype.setRecordingGain = function( gain ){\n  this.config.recordingGain = gain;\n\n  if ( this.recordingGainNode && this.audioContext ) {\n    this.recordingGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n  }\n};\n\nRecorder.prototype.setMonitorGain = function( gain ){\n  this.config.monitorGain = gain;\n\n  if ( this.monitorGainNode && this.audioContext ) {\n    this.monitorGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n  }\n};\n\nRecorder.prototype.start = function( sourceNode ){\n  if ( this.state === \"inactive\" ) {\n    this.initAudioContext( sourceNode );\n    this.initAudioGraph();\n\n    this.encodedSamplePosition = 0;\n\n    return Promise.all([this.initSourceNode(sourceNode), this.initWorker()]).then((results) => {\n      this.sourceNode = results[0];\n      this.state = \"recording\";\n      this.onstart();\n      this.encoder.postMessage({ command: 'getHeaderPages' });\n      this.sourceNode.connect( this.monitorGainNode );\n      this.sourceNode.connect( this.recordingGainNode );\n    });\n  }\n};\n\nRecorder.prototype.stop = function(){\n  if ( this.state !== \"inactive\" ) {\n    this.state = \"inactive\";\n    this.monitorGainNode.disconnect();\n    this.scriptProcessorNode.disconnect();\n    this.recordingGainNode.disconnect();\n    this.sourceNode.disconnect();\n    this.clearStream();\n\n    var encoder = this.encoder;\n    return new Promise((resolve) => {\n      var callback = (e) => {\n        if ( e[\"data\"][\"message\"] === 'done' ) {\n          encoder.removeEventListener( \"message\", callback );\n          resolve();\n        }\n      };\n      encoder.addEventListener( \"message\", callback );\n      encoder.postMessage({ command: \"done\" });\n      if ( !this.config.reuseWorker ) {\n        encoder.postMessage({ command: \"close\" });\n      }\n    });\n  }\n  return Promise.resolve();\n};\n\nRecorder.prototype.destroyWorker = function(){\n  if ( this.state === \"inactive\" ) {\n    if ( this.encoder ) {\n      this.encoder.postMessage({ command: \"close\" });\n      delete this.encoder;\n    }\n  }\n};\n\nRecorder.prototype.storePage = function( page ) {\n  this.recordedPages.push( page );\n  this.totalLength += page.length;\n};\n\nRecorder.prototype.streamPage = function( page ) {\n  this.ondataavailable( page );\n};\n\nRecorder.prototype.finish = function() {\n  if( !this.config.streamPages ) {\n    var outputData = new Uint8Array( this.totalLength );\n    this.recordedPages.reduce( function( offset, page ){\n      outputData.set( page, offset );\n      return offset + page.length;\n    }, 0);\n\n    this.ondataavailable( outputData );\n  }\n  this.onstop();\n  if ( !this.config.reuseWorker ) {\n    delete this.encoder;\n  }\n};\n\n\n// Callback 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sourceURL=webpack-internal:///./src/recorder.js\n"); +eval("/* WEBPACK VAR INJECTION */(function(global) {\n\nvar AudioContext = global.AudioContext || global.webkitAudioContext;\n\n\n// Constructor\nvar Recorder = function( config ){\n\n if ( !Recorder.isRecordingSupported() ) {\n throw new Error(\"Recording is not supported in this browser\");\n }\n\n if ( !config ) config = {};\n\n this.state = \"inactive\";\n this.config = Object.assign({\n bufferLength: 4096,\n encoderApplication: 2049,\n encoderFrameSize: 20,\n encoderPath: 'encoderWorker.min.js',\n encoderSampleRate: 48000,\n maxFramesPerPage: 40,\n mediaTrackConstraints: true,\n monitorGain: 0,\n numberOfChannels: 1,\n recordingGain: 1,\n resampleQuality: 3,\n streamPages: false,\n reuseWorker: false,\n wavBitDepth: 16,\n }, config );\n\n this.encodedSamplePosition = 0;\n};\n\n\n// Static Methods\nRecorder.isRecordingSupported = function(){\n return AudioContext && global.navigator && global.navigator.mediaDevices && global.navigator.mediaDevices.getUserMedia && global.WebAssembly;\n};\n\n\n// Instance Methods\nRecorder.prototype.clearStream = function(){\n if ( this.stream ){\n\n if ( this.stream.getTracks ) {\n this.stream.getTracks().forEach( function( track ){\n track.stop();\n });\n }\n\n else {\n this.stream.stop();\n }\n\n delete this.stream;\n }\n\n if ( this.audioContext && this.closeAudioContext ){\n this.audioContext.close();\n delete this.audioContext;\n }\n};\n\nRecorder.prototype.encodeBuffers = function( inputBuffer ){\n if ( this.state === \"recording\" ) {\n var buffers = [];\n for ( var i = 0; i < inputBuffer.numberOfChannels; i++ ) {\n buffers[i] = inputBuffer.getChannelData(i);\n }\n\n this.encoder.postMessage({\n command: \"encode\",\n buffers: buffers\n });\n }\n};\n\nRecorder.prototype.initAudioContext = function( sourceNode ){\n if (sourceNode && sourceNode.context) {\n this.audioContext = sourceNode.context;\n this.closeAudioContext = false;\n }\n\n else {\n this.audioContext = new AudioContext();\n this.closeAudioContext = true;\n }\n\n return this.audioContext;\n};\n\nRecorder.prototype.initAudioGraph = function(){\n\n // First buffer can contain old data. Don't encode it.\n this.encodeBuffers = function(){\n delete this.encodeBuffers;\n };\n\n this.scriptProcessorNode = this.audioContext.createScriptProcessor( this.config.bufferLength, this.config.numberOfChannels, this.config.numberOfChannels );\n this.scriptProcessorNode.connect( this.audioContext.destination );\n this.scriptProcessorNode.onaudioprocess = ( e ) => {\n this.encodeBuffers( e.inputBuffer );\n };\n\n this.monitorGainNode = this.audioContext.createGain();\n this.setMonitorGain( this.config.monitorGain );\n this.monitorGainNode.connect( this.audioContext.destination );\n\n this.recordingGainNode = this.audioContext.createGain();\n this.setRecordingGain( this.config.recordingGain );\n this.recordingGainNode.connect( this.scriptProcessorNode );\n};\n\nRecorder.prototype.initSourceNode = function( sourceNode ){\n if ( sourceNode && sourceNode.context ) {\n return global.Promise.resolve( sourceNode );\n }\n\n return global.navigator.mediaDevices.getUserMedia({ audio : this.config.mediaTrackConstraints }).then( ( stream ) => {\n this.stream = stream;\n return this.audioContext.createMediaStreamSource( stream );\n });\n};\n\nRecorder.prototype.loadWorker = function() {\n if ( !this.encoder ) {\n this.encoder = new global.Worker(this.config.encoderPath);\n }\n};\n\nRecorder.prototype.initWorker = function(){\n var onPage = (this.config.streamPages ? this.streamPage : this.storePage).bind(this);\n\n this.recordedPages = [];\n this.totalLength = 0;\n this.loadWorker();\n\n return new Promise((resolve, reject) => {\n var callback = (e) => {\n switch( e['data']['message'] ){\n case 'ready':\n resolve();\n break;\n case 'page':\n this.encodedSamplePosition = e['data']['samplePosition'];\n onPage(e['data']['page']);\n break;\n case 'done':\n this.encoder.removeEventListener( \"message\", callback );\n this.finish();\n break;\n }\n };\n\n this.encoder.addEventListener( \"message\", callback );\n this.encoder.postMessage( Object.assign({\n command: 'init',\n originalSampleRate: this.audioContext.sampleRate,\n wavSampleRate: this.audioContext.sampleRate\n }, this.config));\n });\n};\n\nRecorder.prototype.pause = function( flush ) {\n if ( this.state === \"recording\" ) {\n this.state = \"paused\";\n if ( flush && this.config.streamPages ) {\n var encoder = this.encoder;\n return new Promise((resolve, reject) => {\n var callback = (e) => {\n if ( e[\"data\"][\"message\"] === 'flushed' ) {\n encoder.removeEventListener( \"message\", callback );\n this.onpause();\n resolve();\n }\n };\n encoder.addEventListener( \"message\", callback );\n encoder.postMessage( { command: \"flush\" } );\n });\n }\n this.onpause();\n return Promise.resolve();\n }\n};\n\nRecorder.prototype.resume = function() {\n if ( this.state === \"paused\" ) {\n this.state = \"recording\";\n this.onresume();\n }\n};\n\nRecorder.prototype.setRecordingGain = function( gain ){\n this.config.recordingGain = gain;\n\n if ( this.recordingGainNode && this.audioContext ) {\n this.recordingGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n }\n};\n\nRecorder.prototype.setMonitorGain = function( gain ){\n this.config.monitorGain = gain;\n\n if ( this.monitorGainNode && this.audioContext ) {\n this.monitorGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n }\n};\n\nRecorder.prototype.start = function( sourceNode ){\n if ( this.state === \"inactive\" ) {\n this.initAudioContext( sourceNode );\n this.initAudioGraph();\n\n this.encodedSamplePosition = 0;\n\n return this.initWorker().then(() => {\n return this.initSourceNode(sourceNode);\n }).then(sourceNode => {\n this.sourceNode = sourceNode;\n this.state = \"recording\";\n this.onstart();\n this.encoder.postMessage({ command: 'getHeaderPages' });\n this.sourceNode.connect( this.monitorGainNode );\n this.sourceNode.connect( this.recordingGainNode );\n });\n }\n};\n\n/* Recorder.prototype.start = function( sourceNode ){\n if ( this.state === \"inactive\" ) {\n this.initAudioContext( sourceNode );\n this.initAudioGraph();\n\n this.encodedSamplePosition = 0;\n\n return Promise.all([this.initSourceNode(sourceNode), this.initWorker()]).then((results) => {\n this.sourceNode = results[0];\n this.state = \"recording\";\n this.onstart();\n this.encoder.postMessage({ command: 'getHeaderPages' });\n this.sourceNode.connect( this.monitorGainNode );\n this.sourceNode.connect( this.recordingGainNode );\n });\n }\n}; */\n\nRecorder.prototype.stop = function(){\n if ( this.state !== \"inactive\" ) {\n this.state = \"inactive\";\n this.monitorGainNode.disconnect();\n this.scriptProcessorNode.disconnect();\n this.recordingGainNode.disconnect();\n this.sourceNode.disconnect();\n this.clearStream();\n\n var encoder = this.encoder;\n return new Promise((resolve) => {\n var callback = (e) => {\n if ( e[\"data\"][\"message\"] === 'done' ) {\n encoder.removeEventListener( \"message\", callback );\n resolve();\n }\n };\n encoder.addEventListener( \"message\", callback );\n encoder.postMessage({ command: \"done\" });\n if ( !this.config.reuseWorker ) {\n encoder.postMessage({ command: \"close\" });\n }\n });\n }\n return Promise.resolve();\n};\n\nRecorder.prototype.destroyWorker = function(){\n if ( this.state === \"inactive\" ) {\n if ( this.encoder ) {\n this.encoder.postMessage({ command: \"close\" });\n delete this.encoder;\n }\n }\n};\n\nRecorder.prototype.storePage = function( page ) {\n this.recordedPages.push( page );\n this.totalLength += page.length;\n};\n\nRecorder.prototype.streamPage = function( page ) {\n this.ondataavailable( page );\n};\n\nRecorder.prototype.finish = function() {\n if( !this.config.streamPages ) {\n var outputData = new Uint8Array( this.totalLength );\n this.recordedPages.reduce( function( offset, page ){\n outputData.set( page, offset );\n return offset + page.length;\n }, 0);\n\n this.ondataavailable( outputData );\n }\n this.onstop();\n if ( !this.config.reuseWorker ) {\n delete this.encoder;\n }\n};\n\n\n// Callback Handlers\nRecorder.prototype.ondataavailable = function(){};\nRecorder.prototype.onpause = function(){};\nRecorder.prototype.onresume = function(){};\nRecorder.prototype.onstart = function(){};\nRecorder.prototype.onstop = function(){};\n\n\nmodule.exports = Recorder;\n\n/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../node_modules/webpack/buildin/global.js */ \"./node_modules/webpack/buildin/global.js\")))//# sourceURL=[module]\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"./src/recorder.js.js","sources":["webpack://Recorder/./src/recorder.js?056f"],"sourcesContent":["\"use strict\";\n\nvar AudioContext = global.AudioContext || global.webkitAudioContext;\n\n\n// Constructor\nvar Recorder = function( config ){\n\n  if ( !Recorder.isRecordingSupported() ) {\n    throw new Error(\"Recording is not supported in this browser\");\n  }\n\n  if ( !config ) config = {};\n\n  this.state = \"inactive\";\n  this.config = Object.assign({\n    bufferLength: 4096,\n    encoderApplication: 2049,\n    encoderFrameSize: 20,\n    encoderPath: 'encoderWorker.min.js',\n    encoderSampleRate: 48000,\n    maxFramesPerPage: 40,\n    mediaTrackConstraints: true,\n    monitorGain: 0,\n    numberOfChannels: 1,\n    recordingGain: 1,\n    resampleQuality: 3,\n    streamPages: false,\n    reuseWorker: false,\n    wavBitDepth: 16,\n  }, config );\n\n  this.encodedSamplePosition = 0;\n};\n\n\n// Static Methods\nRecorder.isRecordingSupported = function(){\n  return AudioContext && global.navigator && global.navigator.mediaDevices && global.navigator.mediaDevices.getUserMedia && global.WebAssembly;\n};\n\n\n// Instance Methods\nRecorder.prototype.clearStream = function(){\n  if ( this.stream ){\n\n    if ( this.stream.getTracks ) {\n      this.stream.getTracks().forEach( function( track ){\n        track.stop();\n      });\n    }\n\n    else {\n      this.stream.stop();\n    }\n\n    delete this.stream;\n  }\n\n  if ( this.audioContext && this.closeAudioContext ){\n    this.audioContext.close();\n    delete this.audioContext;\n  }\n};\n\nRecorder.prototype.encodeBuffers = function( inputBuffer ){\n  if ( this.state === \"recording\" ) {\n    var buffers = [];\n    for ( var i = 0; i < inputBuffer.numberOfChannels; i++ ) {\n      buffers[i] = inputBuffer.getChannelData(i);\n    }\n\n    this.encoder.postMessage({\n      command: \"encode\",\n      buffers: buffers\n    });\n  }\n};\n\nRecorder.prototype.initAudioContext = function( sourceNode ){\n  if (sourceNode && sourceNode.context) {\n    this.audioContext = sourceNode.context;\n    this.closeAudioContext = false;\n  }\n\n  else {\n    this.audioContext = new AudioContext();\n    this.closeAudioContext = true;\n  }\n\n  return this.audioContext;\n};\n\nRecorder.prototype.initAudioGraph = function(){\n\n  // First buffer can contain old data. Don't encode it.\n  this.encodeBuffers = function(){\n    delete this.encodeBuffers;\n  };\n\n  this.scriptProcessorNode = this.audioContext.createScriptProcessor( this.config.bufferLength, this.config.numberOfChannels, this.config.numberOfChannels );\n  this.scriptProcessorNode.connect( this.audioContext.destination );\n  this.scriptProcessorNode.onaudioprocess = ( e ) => {\n    this.encodeBuffers( e.inputBuffer );\n  };\n\n  this.monitorGainNode = this.audioContext.createGain();\n  this.setMonitorGain( this.config.monitorGain );\n  this.monitorGainNode.connect( this.audioContext.destination );\n\n  this.recordingGainNode = this.audioContext.createGain();\n  this.setRecordingGain( this.config.recordingGain );\n  this.recordingGainNode.connect( this.scriptProcessorNode );\n};\n\nRecorder.prototype.initSourceNode = function( sourceNode ){\n  if ( sourceNode && sourceNode.context ) {\n    return global.Promise.resolve( sourceNode );\n  }\n\n  return global.navigator.mediaDevices.getUserMedia({ audio : this.config.mediaTrackConstraints }).then( ( stream ) => {\n    this.stream = stream;\n    return this.audioContext.createMediaStreamSource( stream );\n  });\n};\n\nRecorder.prototype.loadWorker = function() {\n  if ( !this.encoder ) {\n    this.encoder = new global.Worker(this.config.encoderPath);\n  }\n};\n\nRecorder.prototype.initWorker = function(){\n  var onPage = (this.config.streamPages ? this.streamPage : this.storePage).bind(this);\n\n  this.recordedPages = [];\n  this.totalLength = 0;\n  this.loadWorker();\n\n  return new Promise((resolve, reject) => {\n    var callback = (e) => {\n      switch( e['data']['message'] ){\n        case 'ready':\n          resolve();\n          break;\n        case 'page':\n          this.encodedSamplePosition = e['data']['samplePosition'];\n          onPage(e['data']['page']);\n          break;\n        case 'done':\n          this.encoder.removeEventListener( \"message\", callback );\n          this.finish();\n          break;\n      }\n    };\n\n    this.encoder.addEventListener( \"message\", callback );\n    this.encoder.postMessage( Object.assign({\n      command: 'init',\n      originalSampleRate: this.audioContext.sampleRate,\n      wavSampleRate: this.audioContext.sampleRate\n    }, this.config));\n  });\n};\n\nRecorder.prototype.pause = function( flush ) {\n  if ( this.state === \"recording\" ) {\n    this.state = \"paused\";\n    if ( flush && this.config.streamPages ) {\n      var encoder = this.encoder;\n      return new Promise((resolve, reject) => {\n        var callback = (e) => {\n          if ( e[\"data\"][\"message\"] === 'flushed' ) {\n            encoder.removeEventListener( \"message\", callback );\n            this.onpause();\n            resolve();\n          }\n        };\n        encoder.addEventListener( \"message\", callback );\n        encoder.postMessage( { command: \"flush\" } );\n      });\n    }\n    this.onpause();\n    return Promise.resolve();\n  }\n};\n\nRecorder.prototype.resume = function() {\n  if ( this.state === \"paused\" ) {\n    this.state = \"recording\";\n    this.onresume();\n  }\n};\n\nRecorder.prototype.setRecordingGain = function( gain ){\n  this.config.recordingGain = gain;\n\n  if ( this.recordingGainNode && this.audioContext ) {\n    this.recordingGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n  }\n};\n\nRecorder.prototype.setMonitorGain = function( gain ){\n  this.config.monitorGain = gain;\n\n  if ( this.monitorGainNode && this.audioContext ) {\n    this.monitorGainNode.gain.setTargetAtTime(gain, this.audioContext.currentTime, 0.01);\n  }\n};\n\nRecorder.prototype.start = function( sourceNode ){\n  if ( this.state === \"inactive\" ) {\n    this.initAudioContext( sourceNode );\n    this.initAudioGraph();\n\n    this.encodedSamplePosition = 0;\n\n    return this.initWorker().then(() => {\n      return this.initSourceNode(sourceNode);\n    }).then(sourceNode => {\n      this.sourceNode = sourceNode;\n      this.state = \"recording\";\n      this.onstart();\n      this.encoder.postMessage({ command: 'getHeaderPages' });\n      this.sourceNode.connect( this.monitorGainNode );\n      this.sourceNode.connect( this.recordingGainNode );\n    });\n  }\n};\n\n/* Recorder.prototype.start = function( sourceNode ){\n  if ( this.state === \"inactive\" ) {\n    this.initAudioContext( sourceNode );\n    this.initAudioGraph();\n\n    this.encodedSamplePosition = 0;\n\n    return Promise.all([this.initSourceNode(sourceNode), this.initWorker()]).then((results) => {\n      this.sourceNode = results[0];\n      this.state = \"recording\";\n      this.onstart();\n      this.encoder.postMessage({ command: 'getHeaderPages' });\n      this.sourceNode.connect( this.monitorGainNode );\n      this.sourceNode.connect( this.recordingGainNode );\n    });\n  }\n}; */\n\nRecorder.prototype.stop = function(){\n  if ( this.state !== \"inactive\" ) {\n    this.state = \"inactive\";\n    this.monitorGainNode.disconnect();\n    this.scriptProcessorNode.disconnect();\n    this.recordingGainNode.disconnect();\n    this.sourceNode.disconnect();\n    this.clearStream();\n\n    var encoder = this.encoder;\n    return new Promise((resolve) => {\n      var callback = (e) => {\n        if ( e[\"data\"][\"message\"] === 'done' ) {\n          encoder.removeEventListener( \"message\", callback );\n          resolve();\n        }\n      };\n      encoder.addEventListener( \"message\", callback );\n      encoder.postMessage({ command: \"done\" });\n      if ( !this.config.reuseWorker ) {\n        encoder.postMessage({ command: \"close\" });\n      }\n    });\n  }\n  return Promise.resolve();\n};\n\nRecorder.prototype.destroyWorker = function(){\n  if ( this.state === \"inactive\" ) {\n    if ( this.encoder ) {\n      this.encoder.postMessage({ command: \"close\" });\n      delete this.encoder;\n    }\n  }\n};\n\nRecorder.prototype.storePage = function( page ) {\n  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e&&e.context?t.Promise.resolve(e):t.navigator.mediaDevices.getUserMedia({audio:this.config.mediaTrackConstraints}).then(e=>(this.stream=e,this.audioContext.createMediaStreamSource(e)))},i.prototype.loadWorker=function(){this.encoder||(this.encoder=new t.Worker(this.config.encoderPath))},i.prototype.initWorker=function(){var e=(this.config.streamPages?this.streamPage:this.storePage).bind(this);return this.recordedPages=[],this.totalLength=0,this.loadWorker(),new Promise((t,o)=>{var i=o=>{switch(o.data.message){case"ready":t();break;case"page":this.encodedSamplePosition=o.data.samplePosition,e(o.data.page);break;case"done":this.encoder.removeEventListener("message",i),this.finish()}};this.encoder.addEventListener("message",i),this.encoder.postMessage(Object.assign({command:"init",originalSampleRate:this.audioContext.sampleRate,wavSampleRate:this.audioContext.sampleRate},this.config))})},i.prototype.pause=function(e){if("recording"===this.state){if(this.state="paused",e&&this.config.streamPages){var t=this.encoder;return new Promise((e,o)=>{var i=o=>{"flushed"===o.data.message&&(t.removeEventListener("message",i),this.onpause(),e())};t.addEventListener("message",i),t.postMessage({command:"flush"})})}return this.onpause(),Promise.resolve()}},i.prototype.resume=function(){"paused"===this.state&&(this.state="recording",this.onresume())},i.prototype.setRecordingGain=function(e){this.config.recordingGain=e,this.recordingGainNode&&this.audioContext&&this.recordingGainNode.gain.setTargetAtTime(e,this.audioContext.currentTime,.01)},i.prototype.setMonitorGain=function(e){this.config.monitorGain=e,this.monitorGainNode&&this.audioContext&&this.monitorGainNode.gain.setTargetAtTime(e,this.audioContext.currentTime,.01)},i.prototype.start=function(e){if("inactive"===this.state)return this.initAudioContext(e),this.initAudioGraph(),this.encodedSamplePosition=0,Promise.all([this.initSourceNode(e),this.initWorker()]).then(e=>{this.sourceNode=e[0],this.state="recording",this.onstart(),this.encoder.postMessage({command:"getHeaderPages"}),this.sourceNode.connect(this.monitorGainNode),this.sourceNode.connect(this.recordingGainNode)})},i.prototype.stop=function(){if("inactive"!==this.state){this.state="inactive",this.monitorGainNode.disconnect(),this.scriptProcessorNode.disconnect(),this.recordingGainNode.disconnect(),this.sourceNode.disconnect(),this.clearStream();var e=this.encoder;return new Promise(t=>{var o=i=>{"done"===i.data.message&&(e.removeEventListener("message",o),t())};e.addEventListener("message",o),e.postMessage({command:"done"}),this.config.reuseWorker||e.postMessage({command:"close"})})}return Promise.resolve()},i.prototype.destroyWorker=function(){"inactive"===this.state&&this.encoder&&(this.encoder.postMessage({command:"close"}),delete this.encoder)},i.prototype.storePage=function(e){this.recordedPages.push(e),this.totalLength+=e.length},i.prototype.streamPage=function(e){this.ondataavailable(e)},i.prototype.finish=function(){if(!this.config.streamPages){var e=new Uint8Array(this.totalLength);this.recordedPages.reduce((function(t,o){return e.set(o,t),t+o.length}),0),this.ondataavailable(e)}this.onstop(),this.config.reuseWorker||delete this.encoder},i.prototype.ondataavailable=function(){},i.prototype.onpause=function(){},i.prototype.onresume=function(){},i.prototype.onstart=function(){},i.prototype.onstop=function(){},e.exports=i}).call(this,o(1))},function(e,t){var o;o=function(){return this}();try{o=o||new Function("return this")()}catch(e){"object"==typeof window&&(o=window)}e.exports=o}])})); \ No newline at end of file +!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.Recorder=t():e.Recorder=t()}("undefined"!=typeof self?self:this,(function(){return function(e){var t={};function o(i){if(t[i])return t[i].exports;var n=t[i]={i:i,l:!1,exports:{}};return e[i].call(n.exports,n,n.exports,o),n.l=!0,n.exports}return o.m=e,o.c=t,o.d=function(e,t,i){o.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:i})},o.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},o.t=function(e,t){if(1&t&&(e=o(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var i=Object.create(null);if(o.r(i),Object.defineProperty(i,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var n in e)o.d(i,n,function(t){return e[t]}.bind(null,n));return i},o.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return o.d(t,"a",t),t},o.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},o.p="",o(o.s=0)}([function(e,t,o){"use strict";(function(t){var o=t.AudioContext||t.webkitAudioContext,i=function(e){if(!i.isRecordingSupported())throw new Error("Recording is not supported in this browser");e||(e={}),this.state="inactive",this.config=Object.assign({bufferLength:4096,encoderApplication:2049,encoderFrameSize:20,encoderPath:"encoderWorker.min.js",encoderSampleRate:48e3,maxFramesPerPage:40,mediaTrackConstraints:!0,monitorGain:0,numberOfChannels:1,recordingGain:1,resampleQuality:3,streamPages:!1,reuseWorker:!1,wavBitDepth:16},e),this.encodedSamplePosition=0};i.isRecordingSupported=function(){return o&&t.navigator&&t.navigator.mediaDevices&&t.navigator.mediaDevices.getUserMedia&&t.WebAssembly},i.prototype.clearStream=function(){this.stream&&(this.stream.getTracks?this.stream.getTracks().forEach((function(e){e.stop()})):this.stream.stop(),delete this.stream),this.audioContext&&this.closeAudioContext&&(this.audioContext.close(),delete this.audioContext)},i.prototype.encodeBuffers=function(e){if("recording"===this.state){for(var t=[],o=0;o{this.encodeBuffers(e.inputBuffer)},this.monitorGainNode=this.audioContext.createGain(),this.setMonitorGain(this.config.monitorGain),this.monitorGainNode.connect(this.audioContext.destination),this.recordingGainNode=this.audioContext.createGain(),this.setRecordingGain(this.config.recordingGain),this.recordingGainNode.connect(this.scriptProcessorNode)},i.prototype.initSourceNode=function(e){return e&&e.context?t.Promise.resolve(e):t.navigator.mediaDevices.getUserMedia({audio:this.config.mediaTrackConstraints}).then(e=>(this.stream=e,this.audioContext.createMediaStreamSource(e)))},i.prototype.loadWorker=function(){this.encoder||(this.encoder=new t.Worker(this.config.encoderPath))},i.prototype.initWorker=function(){var e=(this.config.streamPages?this.streamPage:this.storePage).bind(this);return this.recordedPages=[],this.totalLength=0,this.loadWorker(),new Promise((t,o)=>{var i=o=>{switch(o.data.message){case"ready":t();break;case"page":this.encodedSamplePosition=o.data.samplePosition,e(o.data.page);break;case"done":this.encoder.removeEventListener("message",i),this.finish()}};this.encoder.addEventListener("message",i),this.encoder.postMessage(Object.assign({command:"init",originalSampleRate:this.audioContext.sampleRate,wavSampleRate:this.audioContext.sampleRate},this.config))})},i.prototype.pause=function(e){if("recording"===this.state){if(this.state="paused",e&&this.config.streamPages){var t=this.encoder;return new Promise((e,o)=>{var i=o=>{"flushed"===o.data.message&&(t.removeEventListener("message",i),this.onpause(),e())};t.addEventListener("message",i),t.postMessage({command:"flush"})})}return this.onpause(),Promise.resolve()}},i.prototype.resume=function(){"paused"===this.state&&(this.state="recording",this.onresume())},i.prototype.setRecordingGain=function(e){this.config.recordingGain=e,this.recordingGainNode&&this.audioContext&&this.recordingGainNode.gain.setTargetAtTime(e,this.audioContext.currentTime,.01)},i.prototype.setMonitorGain=function(e){this.config.monitorGain=e,this.monitorGainNode&&this.audioContext&&this.monitorGainNode.gain.setTargetAtTime(e,this.audioContext.currentTime,.01)},i.prototype.start=function(e){if("inactive"===this.state)return this.initAudioContext(e),this.initAudioGraph(),this.encodedSamplePosition=0,this.initWorker().then(()=>this.initSourceNode(e)).then(e=>{this.sourceNode=e,this.state="recording",this.onstart(),this.encoder.postMessage({command:"getHeaderPages"}),this.sourceNode.connect(this.monitorGainNode),this.sourceNode.connect(this.recordingGainNode)})},i.prototype.stop=function(){if("inactive"!==this.state){this.state="inactive",this.monitorGainNode.disconnect(),this.scriptProcessorNode.disconnect(),this.recordingGainNode.disconnect(),this.sourceNode.disconnect(),this.clearStream();var e=this.encoder;return new Promise(t=>{var o=i=>{"done"===i.data.message&&(e.removeEventListener("message",o),t())};e.addEventListener("message",o),e.postMessage({command:"done"}),this.config.reuseWorker||e.postMessage({command:"close"})})}return Promise.resolve()},i.prototype.destroyWorker=function(){"inactive"===this.state&&this.encoder&&(this.encoder.postMessage({command:"close"}),delete this.encoder)},i.prototype.storePage=function(e){this.recordedPages.push(e),this.totalLength+=e.length},i.prototype.streamPage=function(e){this.ondataavailable(e)},i.prototype.finish=function(){if(!this.config.streamPages){var e=new Uint8Array(this.totalLength);this.recordedPages.reduce((function(t,o){return e.set(o,t),t+o.length}),0),this.ondataavailable(e)}this.onstop(),this.config.reuseWorker||delete this.encoder},i.prototype.ondataavailable=function(){},i.prototype.onpause=function(){},i.prototype.onresume=function(){},i.prototype.onstart=function(){},i.prototype.onstop=function(){},e.exports=i}).call(this,o(1))},function(e,t){var o;o=function(){return this}();try{o=o||new Function("return this")()}catch(e){"object"==typeof window&&(o=window)}e.exports=o}])})); \ No newline at end of file diff --git a/src/recorder.js b/src/recorder.js index 76ac814..2dbf746 100755 --- a/src/recorder.js +++ b/src/recorder.js @@ -209,6 +209,26 @@ Recorder.prototype.setMonitorGain = function( gain ){ }; Recorder.prototype.start = function( sourceNode ){ + if ( this.state === "inactive" ) { + this.initAudioContext( sourceNode ); + this.initAudioGraph(); + + this.encodedSamplePosition = 0; + + return this.initWorker().then(() => { + return this.initSourceNode(sourceNode); + }).then(sourceNode => { + this.sourceNode = sourceNode; + this.state = "recording"; + this.onstart(); + this.encoder.postMessage({ command: 'getHeaderPages' }); + this.sourceNode.connect( this.monitorGainNode ); + this.sourceNode.connect( this.recordingGainNode ); + }); + } +}; + +/* Recorder.prototype.start = function( sourceNode ){ if ( this.state === "inactive" ) { this.initAudioContext( sourceNode ); this.initAudioGraph(); @@ -224,7 +244,7 @@ Recorder.prototype.start = function( sourceNode ){ this.sourceNode.connect( this.recordingGainNode ); }); } -}; +}; */ Recorder.prototype.stop = function(){ if ( this.state !== "inactive" ) {