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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <!-- | 3 <!-- |
| 4 Copyright 2015 The Chromium Authors. All rights reserved. | 4 Copyright 2015 The Chromium Authors. All rights reserved. |
| 5 Use of this source code is governed by a BSD-style license that can be | 5 Use of this source code is governed by a BSD-style license that can be |
| 6 found in the LICENSE file. | 6 found in the LICENSE file. |
| 7 --> | 7 --> |
| 8 <head> | 8 <head> |
| 9 <title>Audio Encoder Example</title> | 9 <title>Audio Encoder Example</title> |
| 10 <script type="text/javascript"> | 10 <script type="text/javascript"> |
| (...skipping 213 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 224 // input sample rate. | 224 // input sample rate. |
| 225 i += writeValue(buffer, 4, i, format.sample_rate); | 225 i += writeValue(buffer, 4, i, format.sample_rate); |
| 226 // output gain. | 226 // output gain. |
| 227 i += writeValue(buffer, 2, i, 0); | 227 i += writeValue(buffer, 2, i, 0); |
| 228 // channel mapping family. | 228 // channel mapping family. |
| 229 i += writeValue(buffer, 1, i, 0); | 229 i += writeValue(buffer, 1, i, 0); |
| 230 | 230 |
| 231 this._writePage(this._Start, buffer.byteLength); | 231 this._writePage(this._Start, buffer.byteLength); |
| 232 this.buffer.appendData(buffer); | 232 this.buffer.appendData(buffer); |
| 233 this._writePageChecksum(start); | 233 this._writePageChecksum(start); |
| 234 this._writeCommentHeader('OpusTags'); | 234 this._writeCommentHeader(); |
| 235 }, | 235 }, |
| 236 _writeCommentHeader: function(name) { | 236 _writeCommentHeader: function(name) { |
| 237 var start = this.buffer.getSize(); | 237 var start = this.buffer.getSize(); |
| 238 var buffer = new Uint8Array(8 + 4 + 8 + 4 + 4 + 13), i = 0; | 238 var buffer = new Uint8Array(8 + 4 + 8 + 4 + 4 + 13), i = 0; |
| 239 // Opus comment header. | 239 // Opus comment header. |
| 240 i += writeString(buffer, i, name); | 240 i += writeString(buffer, i, 'OpusTags'); |
| 241 // Vendor string. | 241 // Vendor string. |
| 242 i += this._writeLengthString(buffer, i, 'Chromium'); | 242 i += this._writeLengthString(buffer, i, 'Chromium'); |
| 243 // User comment list length | 243 // User comment list length |
| 244 i += writeValue(buffer, 4, i, 1); | 244 i += writeValue(buffer, 4, i, 1); |
| 245 // User comment 0 length. | 245 // User comment 0 length. |
| 246 i += this._writeLengthString(buffer, i, 'TITLE=example'); | 246 i += this._writeLengthString(buffer, i, 'TITLE=example'); |
| 247 | 247 |
| 248 this._writePage(this._Continue, buffer.byteLength); | 248 this._writePage(0, buffer.byteLength); |
| 249 this.buffer.appendData(buffer); | 249 this.buffer.appendData(buffer); |
| 250 this._writePageChecksum(start); | 250 this._writePageChecksum(start); |
| 251 }, | 251 }, |
| 252 _writeLengthString: function(buffer, offset, str) { | 252 _writeLengthString: function(buffer, offset, str) { |
| 253 return (writeValue(buffer, offset, 4, str.length) + | 253 return (writeValue(buffer, 4, offset, str.length) + |
| 254 writeString(buffer, offset, str)); | 254 writeString(buffer, offset + 4, str)); |
| 255 }, | 255 }, |
| 256 writeData: function(data) { | 256 writeData: function(data) { |
| 257 this.position += this.format.sample_per_frame / this.format.channels; | 257 this.position += this.format.sample_per_frame / this.format.channels; |
| 258 var start = this.buffer.getSize(); | 258 var start = this.buffer.getSize(); |
| 259 this._writePage(0, data.byteLength, this.position); | 259 this._writePage(0, data.byteLength, this.position); |
| 260 this.buffer.appendData(data); | 260 this.buffer.appendData(data); |
| 261 this._writePageChecksum(start); | 261 this._writePageChecksum(start); |
| 262 this.dataWritten = true; | 262 this.dataWritten = true; |
| 263 }, | 263 }, |
| 264 end: function() { | 264 end: function() { |
| (...skipping 144 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 409 | 409 |
| 410 <select id="profileList"></select> | 410 <select id="profileList"></select> |
| 411 <input type="button" id="start" value="Start Recording"/> | 411 <input type="button" id="start" value="Start Recording"/> |
| 412 <input type="button" id="stop" value="Stop Recording"/> | 412 <input type="button" id="stop" value="Stop Recording"/> |
| 413 <div id="download-box"></div> | 413 <div id="download-box"></div> |
| 414 <div id="length"></div> | 414 <div id="length"></div> |
| 415 <br> | 415 <br> |
| 416 <embed id="plugin" type="application/x-ppapi-example-audio-encode"/> | 416 <embed id="plugin" type="application/x-ppapi-example-audio-encode"/> |
| 417 </body> | 417 </body> |
| 418 </html> | 418 </html> |
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Chromium Code Reviews
Issue 1640703002:
ppapi: examples: audio_encode: fix opus comments (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master