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| 1 /* | |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #ifndef WEBRTC_SOUND_ALSASOUNDSYSTEM_H_ | |
| 12 #define WEBRTC_SOUND_ALSASOUNDSYSTEM_H_ | |
| 13 | |
| 14 #include "webrtc/sound/alsasymboltable.h" | |
| 15 #include "webrtc/sound/soundsysteminterface.h" | |
| 16 #include "webrtc/base/constructormagic.h" | |
| 17 | |
| 18 namespace rtc { | |
| 19 | |
| 20 class AlsaStream; | |
| 21 class AlsaInputStream; | |
| 22 class AlsaOutputStream; | |
| 23 | |
| 24 // Sound system implementation for ALSA, the predominant sound device API on | |
| 25 // Linux (but typically not used directly by applications anymore). | |
| 26 class AlsaSoundSystem : public SoundSystemInterface { | |
| 27 friend class AlsaStream; | |
| 28 friend class AlsaInputStream; | |
| 29 friend class AlsaOutputStream; | |
| 30 public: | |
| 31 static SoundSystemInterface *Create() { | |
| 32 return new AlsaSoundSystem(); | |
| 33 } | |
| 34 | |
| 35 AlsaSoundSystem(); | |
| 36 | |
| 37 ~AlsaSoundSystem() override; | |
| 38 | |
| 39 bool Init() override; | |
| 40 void Terminate() override; | |
| 41 | |
| 42 bool EnumeratePlaybackDevices(SoundDeviceLocatorList *devices) override; | |
| 43 bool EnumerateCaptureDevices(SoundDeviceLocatorList *devices) override; | |
| 44 | |
| 45 bool GetDefaultPlaybackDevice(SoundDeviceLocator **device) override; | |
| 46 bool GetDefaultCaptureDevice(SoundDeviceLocator **device) override; | |
| 47 | |
| 48 SoundOutputStreamInterface *OpenPlaybackDevice( | |
| 49 const SoundDeviceLocator *device, | |
| 50 const OpenParams ¶ms) override; | |
| 51 SoundInputStreamInterface *OpenCaptureDevice( | |
| 52 const SoundDeviceLocator *device, | |
| 53 const OpenParams ¶ms) override; | |
| 54 | |
| 55 const char *GetName() const override; | |
| 56 | |
| 57 private: | |
| 58 bool IsInitialized() { return initialized_; } | |
| 59 | |
| 60 bool EnumerateDevices(SoundDeviceLocatorList *devices, | |
| 61 bool capture_not_playback); | |
| 62 | |
| 63 bool GetDefaultDevice(SoundDeviceLocator **device); | |
| 64 | |
| 65 static size_t FrameSize(const OpenParams ¶ms); | |
| 66 | |
| 67 template <typename StreamInterface> | |
| 68 StreamInterface *OpenDevice( | |
| 69 const SoundDeviceLocator *device, | |
| 70 const OpenParams ¶ms, | |
| 71 snd_pcm_stream_t type, | |
| 72 StreamInterface *(AlsaSoundSystem::*start_fn)( | |
| 73 snd_pcm_t *handle, | |
| 74 size_t frame_size, | |
| 75 int wait_timeout_ms, | |
| 76 int flags, | |
| 77 int freq)); | |
| 78 | |
| 79 SoundOutputStreamInterface *StartOutputStream( | |
| 80 snd_pcm_t *handle, | |
| 81 size_t frame_size, | |
| 82 int wait_timeout_ms, | |
| 83 int flags, | |
| 84 int freq); | |
| 85 | |
| 86 SoundInputStreamInterface *StartInputStream( | |
| 87 snd_pcm_t *handle, | |
| 88 size_t frame_size, | |
| 89 int wait_timeout_ms, | |
| 90 int flags, | |
| 91 int freq); | |
| 92 | |
| 93 const char *GetError(int err); | |
| 94 | |
| 95 bool initialized_; | |
| 96 AlsaSymbolTable symbol_table_; | |
| 97 | |
| 98 RTC_DISALLOW_COPY_AND_ASSIGN(AlsaSoundSystem); | |
| 99 }; | |
| 100 | |
| 101 } // namespace rtc | |
| 102 | |
| 103 #endif // WEBRTC_SOUND_ALSASOUNDSYSTEM_H_ | |
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Chromium Code Reviews
Issue 1715043002:
Remove webrtc/sound/ subdir. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@remove_devicemanager