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GUAC-1511: Use constant buffer size.

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This commit is contained in:
Michael Jumper
2016-04-03 15:04:01 -07:00
parent 6a4fab67aa
commit 77cc8ef720
1 changed files with 13 additions and 11 deletions
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24
guacamole-common-js/src/main/webapp/modules/AudioRecorder.js
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@@ -114,6 +114,18 @@ Guacamole.AudioRecorder.getInstance = function getInstance(stream, mimetype) {
*/
Guacamole.RawAudioRecorder = function RawAudioRecorder(stream, mimetype) {
/**
* The size of audio buffer to request from the Web Audio API when
* recording or processing audio, in sample-frames. This must be a power of
* two between 256 and 16384 inclusive, as required by
* AudioContext.createScriptProcessor().
*
* @private
* @constant
* @type {Number}
*/
var BUFFER_SIZE = 512;
/**
* The format of audio this recorder will encode.
*
@@ -171,16 +183,6 @@ Guacamole.RawAudioRecorder = function RawAudioRecorder(stream, mimetype) {
*/
var maxSampleValue = (format.bytesPerSample === 1) ? 128 : 32768;
/**
* The size of audio buffer to request from the Web Audio API when
* recording audio. This must be a power of two between 256 and 16384
* inclusive, as required by AudioContext.createScriptProcessor().
*
* @private
* @type {Number}
*/
var bufferSize = format.bytesPerSample * 256;
/**
* Converts the given AudioBuffer into an audio packet, ready for streaming
* along the underlying output stream. Unlike the raw audio packets used by
@@ -232,7 +234,7 @@ Guacamole.RawAudioRecorder = function RawAudioRecorder(stream, mimetype) {
getUserMedia({ 'audio' : true }, function streamReceived(mediaStream) {
// Create processing node which receives appropriately-sized audio buffers
var processor = context.createScriptProcessor(bufferSize, format.channels, format.channels);
var processor = context.createScriptProcessor(BUFFER_SIZE, format.channels, format.channels);
processor.connect(context.destination);
// Send blobs when audio buffers are received