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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <!-- | 3 <!-- |
| 4 Copyright (c) 2011 The Chromium Authors. All rights reserved. | 4 Copyright (c) 2012 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>Video Capture Example</title> | 9 <title>Video Capture Example</title> |
| 10 <script type="text/javascript"> |
| 11 var device_array = []; |
| 12 |
| 13 function HandleMessage(message_event) { |
| 14 if (message_event.data) { |
| 15 if (message_event.data == 'EnumerationFailed') { |
| 16 var status = document.getElementById('status'); |
| 17 status.innerText = 'Device enumeration failed!'; |
| 18 } else if (message_event.data == 'OpenFailed') { |
| 19 var status = document.getElementById('status'); |
| 20 status.innerText = 'Open device failed!'; |
| 21 } else { |
| 22 device_array = message_event.data.split('#__#'); |
| 23 |
| 24 var list = document.getElementById('device_list'); |
| 25 for (var i = 0; i < device_array.length; ++i) { |
| 26 var list_item = document.createElement('li'); |
| 27 var link = document.createElement('a'); |
| 28 link.href = 'javascript:UseDesignatedDevice(' + i + ');'; |
| 29 link.innerText = device_array[i]; |
| 30 list_item.appendChild(link); |
| 31 list.appendChild(list_item); |
| 32 } |
| 33 } |
| 34 } |
| 35 } |
| 36 |
| 37 function UseDesignatedDevice(index) { |
| 38 UseDevice(device_array[index], index); |
| 39 } |
| 40 |
| 41 function UseDefaultDevice(use_0_1_interface) { |
| 42 var display_text = use_0_1_interface ? 'Default(v0.1)' : 'Default'; |
| 43 var command = use_0_1_interface ? 'UseDefault(v0.1)' : 'UseDefault'; |
| 44 UseDevice(display_text, command); |
| 45 } |
| 46 |
| 47 function UseDevice(display_text, command) { |
| 48 var in_use_device = document.getElementById('in_use_device'); |
| 49 in_use_device.innerText = display_text; |
| 50 var plugin = document.getElementById('plugin'); |
| 51 plugin.postMessage(command); |
| 52 |
| 53 var available_devices = document.getElementById('available_devices'); |
| 54 available_devices.parentNode.removeChild(available_devices); |
| 55 |
| 56 var control_panel = document.getElementById('control_panel'); |
| 57 var link = document.createElement('a'); |
| 58 link.href = 'javascript:Stop();'; |
| 59 link.innerText = 'Stop'; |
| 60 control_panel.appendChild(link); |
| 61 } |
| 62 |
| 63 function Stop() { |
| 64 var plugin = document.getElementById('plugin'); |
| 65 plugin.postMessage('Stop'); |
| 66 } |
| 67 |
| 68 function Initialize() { |
| 69 var plugin = document.getElementById('plugin'); |
| 70 plugin.addEventListener('message', HandleMessage, false); |
| 71 plugin.postMessage('PageInitialized'); |
| 72 } |
| 73 |
| 74 document.addEventListener('DOMContentLoaded', Initialize, false); |
| 75 </script> |
| 10 </head> | 76 </head> |
| 11 | 77 |
| 12 <body> | 78 <body> |
| 13 | 79 <embed id="plugin" type="application/x-ppapi-example-video-capture" |
| 14 <embed id="plugin" type="application/x-ppapi-example-video-capture" | 80 width="320" height="240"/> |
| 15 width="320" height="240"/> | 81 <div style="margin-bottom:10px">In-use device: |
| 16 | 82 <span id="in_use_device" style="font-weight:bold">None</span> |
| 83 </div> |
| 84 <div id="available_devices"> |
| 85 Available device(s), choose one to open: |
| 86 <ul id="device_list"> |
| 87 <li><a href="javascript:UseDefaultDevice(true);"> |
| 88 Default - use interface version 0.1</a></li> |
| 89 <li><a href="javascript:UseDefaultDevice(false);">Default</a></li> |
| 90 </ul> |
| 91 </div> |
| 92 <div id="control_panel"></div> |
| 93 <div id="status"></div> |
| 17 </body> | 94 </body> |
| 18 </html> | 95 </html> |
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Chromium Code Reviews
Issue 9234064:
Implement device enumeration for PPB_VideoCapture_Dev. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src