1 /* 2 * libjingle 3 * Copyright 2004--2008, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_SESSION_PHONE_DEVICEMANAGER_H_ 29 #define TALK_SESSION_PHONE_DEVICEMANAGER_H_ 30 31 #include <string> 32 #include <vector> 33 34 #include "talk/base/sigslot.h" 35 #include "talk/base/stringencode.h" 36 #ifdef LINUX 37 #include "talk/sound/soundsystemfactory.h" 38 #endif 39 40 namespace cricket { 41 42 class DeviceWatcher; 43 44 // Used to represent an audio or video capture or render device. 45 struct Device { DeviceDevice46 Device() {} DeviceDevice47 Device(const std::string& first, int second) 48 : name(first), 49 id(talk_base::ToString(second)) { 50 } DeviceDevice51 Device(const std::string& first, const std::string& second) 52 : name(first), id(second) {} 53 54 std::string name; 55 std::string id; 56 }; 57 58 // DeviceManager manages the audio and video devices on the system. 59 // Methods are virtual to allow for easy stubbing/mocking in tests. 60 class DeviceManager { 61 public: 62 DeviceManager(); 63 virtual ~DeviceManager(); 64 65 // Initialization 66 virtual bool Init(); 67 virtual void Terminate(); initialized()68 bool initialized() const { return initialized_; } 69 70 // Capabilities 71 virtual int GetCapabilities(); 72 73 // Device enumeration 74 virtual bool GetAudioInputDevices(std::vector<Device>* devices); 75 virtual bool GetAudioOutputDevices(std::vector<Device>* devices); 76 77 bool GetAudioInputDevice(const std::string& name, Device* out); 78 bool GetAudioOutputDevice(const std::string& name, Device* out); 79 80 virtual bool GetVideoCaptureDevices(std::vector<Device>* devs); 81 bool GetVideoCaptureDevice(const std::string& name, Device* out); 82 83 sigslot::signal0<> SignalDevicesChange; 84 OnDevicesChange()85 void OnDevicesChange() { SignalDevicesChange(); } 86 87 static const std::string kDefaultDeviceName; 88 89 protected: 90 virtual bool GetAudioDevice(bool is_input, const std::string& name, 91 Device* out); 92 virtual bool GetDefaultVideoCaptureDevice(Device* device); 93 94 private: 95 bool GetAudioDevicesByPlatform(bool input, std::vector<Device>* devs); 96 97 bool initialized_; 98 #ifdef WIN32 99 bool need_couninitialize_; 100 #endif 101 DeviceWatcher* watcher_; 102 #ifdef LINUX 103 SoundSystemHandle sound_system_; 104 #endif 105 }; 106 107 } // namespace cricket 108 109 #endif // TALK_SESSION_PHONE_DEVICEMANAGER_H_ 110