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GUAC-1517: Maintain singleton instance of AudioContext.

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This commit is contained in:
Michael Jumper
2016-03-31 15:12:29 -07:00
parent 065548fcdd
commit 93783cf5d5
3 changed files with 85 additions and 42 deletions
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24
guacamole-common-js/src/main/webapp/modules/AudioRecorder.js
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@@ -129,25 +129,7 @@ Guacamole.RawAudioRecorder = function RawAudioRecorder(stream, mimetype) {
* @private
* @type {AudioContext}
*/
var context = (function getAudioContext() {
// Fallback to Webkit-specific AudioContext implementation
var AudioContext = window.AudioContext || window.webkitAudioContext;
// Get new AudioContext instance if Web Audio API is supported
if (AudioContext) {
try {
return new AudioContext();
}
catch (e) {
// Do not use Web Audio API if not allowed by browser
}
}
// Web Audio API not supported
return null;
})();
var context = Guacamole.AudioContextFactory.getAudioContext();
/**
* A function which directly invokes the browser's implementation of
@@ -289,7 +271,7 @@ Guacamole.RawAudioRecorder.prototype = new Guacamole.AudioRecorder();
Guacamole.RawAudioRecorder.isSupportedType = function isSupportedType(mimetype) {
// No supported types if no Web Audio API
if (!window.AudioContext && !window.webkitAudioContext)
if (!Guacamole.AudioContextFactory.getAudioContext())
return false;
return Guacamole.RawAudioFormat.parse(mimetype) !== null;
@@ -312,7 +294,7 @@ Guacamole.RawAudioRecorder.isSupportedType = function isSupportedType(mimetype)
Guacamole.RawAudioRecorder.getSupportedTypes = function getSupportedTypes() {
// No supported types if no Web Audio API
if (!window.AudioContext && !window.webkitAudioContext)
if (!Guacamole.AudioContextFactory.getAudioContext())
return [];
// We support 8-bit and 16-bit raw PCM