| <!DOCTYPE html> |
| <html> |
| <!-- |
| Copyright 2012 The Chromium Authors |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| <head> |
| <title>Audio Input Example</title> |
| <script type="text/javascript"> |
| var monitor_device_array = []; |
| var enumerate_device_array = []; |
| var monitor_notification_count = 0; |
| |
| function HandleMessage(message_event) { |
| if (message_event.data) { |
| var status = document.getElementById('status'); |
| if (message_event.data == 'EnumerationFailed') { |
| status.innerText = 'Device enumeration failed!'; |
| } else if (message_event.data == 'MonitorDeviceChangeFailed') { |
| status.innerText = 'Monitor device change failed!'; |
| } else if (message_event.data == 'OpenFailed') { |
| status.innerText = 'Open device failed!'; |
| } else if (message_event.data == 'StartFailed') { |
| status.innerText = 'Start capturing failed!'; |
| } else if (message_event.data == 'StopFailed') { |
| status.innerText = 'Stop capturing failed!'; |
| } else { |
| AddDevices(message_event.data); |
| } |
| } |
| } |
| |
| function AddDevices(command) { |
| var serialized_names = ''; |
| var is_monitor = false; |
| if (command.search('Monitor:') == 0) { |
| serialized_names = command.substr(8); |
| is_monitor = true; |
| monitor_notification_count++; |
| var counter = document.getElementById('notification_counter'); |
| counter.innerText = monitor_notification_count; |
| } else if (command.search('Enumerate:') == 0) { |
| serialized_names = command.substr(10); |
| } else { |
| status.innerText = 'Unrecognized command!'; |
| return; |
| } |
| |
| var storage = serialized_names.length != 0 ? |
| serialized_names.split('#__#') : []; |
| if (is_monitor) |
| monitor_device_array = storage; |
| else |
| enumerate_device_array = storage; |
| |
| var list = document.getElementById( |
| is_monitor ? 'monitor_list' : 'enumerate_list'); |
| while (list.firstChild) |
| list.removeChild(list.firstChild); |
| |
| for (var i = 0; i < storage.length; ++i) { |
| AppendDevice( |
| list, storage[i], |
| 'javascript:UseDesignatedDevice(' + is_monitor + ',' + i + ');'); |
| } |
| } |
| |
| function AppendDevice(list, text, href) { |
| var list_item = document.createElement('li'); |
| var link = document.createElement('a'); |
| link.href = href; |
| link.innerText = text; |
| list_item.appendChild(link); |
| list.appendChild(list_item); |
| } |
| |
| function UseDesignatedDevice(is_monitor, index) { |
| if (is_monitor) |
| UseDevice(monitor_device_array[index], 'Monitor:' + index); |
| else |
| UseDevice(enumerate_device_array[index], 'Enumerate:' + index); |
| } |
| |
| function UseDefaultDevice() { |
| UseDevice('Default', 'UseDefault'); |
| } |
| |
| function UseDevice(display_text, command) { |
| var in_use_device = document.getElementById('in_use_device'); |
| in_use_device.innerText = display_text; |
| var plugin = document.getElementById('plugin'); |
| plugin.postMessage(command); |
| } |
| |
| function Stop() { |
| var plugin = document.getElementById('plugin'); |
| plugin.postMessage('Stop'); |
| } |
| |
| function Start() { |
| var plugin = document.getElementById('plugin'); |
| plugin.postMessage('Start'); |
| } |
| |
| function Initialize() { |
| var plugin = document.getElementById('plugin'); |
| plugin.addEventListener('message', HandleMessage, false) |
| plugin.postMessage('PageInitialized'); |
| } |
| |
| document.addEventListener('DOMContentLoaded', Initialize, false); |
| </script> |
| </head> |
| |
| <body> |
| <embed id="plugin" type="application/x-ppapi-example-audio-input" |
| width="800" height="400"/> |
| <div style="margin-bottom:10px">In-use device: |
| <span id="in_use_device" style="font-weight:bold">None</span> |
| </div> |
| <div id="available_devices"> |
| Available device(s), choose one to open: |
| <ul> |
| <li><a href="javascript:UseDefaultDevice();"> |
| Default - use NULL device ref</a></li> |
| </ul> |
| <div> |
| <ul>List retrieved by MonitorDeviceChange(), will change when |
| pluging/unpluging devices: (Notifications received: |
| <span style="font-weight:bold" id="notification_counter">0</span> |
| )</ul> |
| <ul id="monitor_list"/> |
| </div> |
| <div> |
| <ul>List retrieved by EnumerateDevices(), never updated after the page is |
| initialized:</ul> |
| <ul id="enumerate_list"/> |
| </div> |
| </div> |
| <div id="control_panel"> |
| <a href="javascript:Stop();">Stop</a> |
| <a href="javascript:Start();">Start</a> (known issue: crbug.com/161058) |
| </div> |
| <div id="status"></div> |
| </body> |
| </html> |
