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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 #include "webrtc/sound/nullsoundsystem.h" | |
| 12 | |
| 13 #include "webrtc/sound/sounddevicelocator.h" | |
| 14 #include "webrtc/sound/soundinputstreaminterface.h" | |
| 15 #include "webrtc/sound/soundoutputstreaminterface.h" | |
| 16 #include "webrtc/base/logging.h" | |
| 17 | |
| 18 namespace rtc { | |
| 19 class Thread; | |
| 20 } | |
| 21 | |
| 22 namespace rtc { | |
| 23 | |
| 24 // Name used for the single device and the sound system itself. | |
| 25 static const char kNullName[] = "null"; | |
| 26 | |
| 27 class NullSoundDeviceLocator : public SoundDeviceLocator { | |
| 28 public: | |
| 29 NullSoundDeviceLocator() : SoundDeviceLocator(kNullName, kNullName) {} | |
| 30 | |
| 31 SoundDeviceLocator *Copy() const override { | |
| 32 return new NullSoundDeviceLocator(); | |
| 33 } | |
| 34 }; | |
| 35 | |
| 36 class NullSoundInputStream : public SoundInputStreamInterface { | |
| 37 public: | |
| 38 bool StartReading() override { | |
| 39 return true; | |
| 40 } | |
| 41 | |
| 42 bool StopReading() override { | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 bool GetVolume(int *volume) override { | |
| 47 *volume = SoundSystemInterface::kMinVolume; | |
| 48 return true; | |
| 49 } | |
| 50 | |
| 51 bool SetVolume(int volume) override { | |
| 52 return false; | |
| 53 } | |
| 54 | |
| 55 bool Close() override { | |
| 56 return true; | |
| 57 } | |
| 58 | |
| 59 int LatencyUsecs() override { | |
| 60 return 0; | |
| 61 } | |
| 62 }; | |
| 63 | |
| 64 class NullSoundOutputStream : public SoundOutputStreamInterface { | |
| 65 public: | |
| 66 bool EnableBufferMonitoring() override { | |
| 67 return true; | |
| 68 } | |
| 69 | |
| 70 bool DisableBufferMonitoring() override { | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 bool WriteSamples(const void *sample_data, size_t size) override { | |
| 75 LOG(LS_VERBOSE) << "Got " << size << " bytes of playback samples"; | |
| 76 return true; | |
| 77 } | |
| 78 | |
| 79 bool GetVolume(int *volume) override { | |
| 80 *volume = SoundSystemInterface::kMinVolume; | |
| 81 return true; | |
| 82 } | |
| 83 | |
| 84 bool SetVolume(int volume) override { | |
| 85 return false; | |
| 86 } | |
| 87 | |
| 88 bool Close() override { | |
| 89 return true; | |
| 90 } | |
| 91 | |
| 92 int LatencyUsecs() override { | |
| 93 return 0; | |
| 94 } | |
| 95 }; | |
| 96 | |
| 97 NullSoundSystem::~NullSoundSystem() { | |
| 98 } | |
| 99 | |
| 100 bool NullSoundSystem::Init() { | |
| 101 return true; | |
| 102 } | |
| 103 | |
| 104 void NullSoundSystem::Terminate() { | |
| 105 // Nothing to do. | |
| 106 } | |
| 107 | |
| 108 bool NullSoundSystem::EnumeratePlaybackDevices( | |
| 109 SoundSystemInterface::SoundDeviceLocatorList *devices) { | |
| 110 ClearSoundDeviceLocatorList(devices); | |
| 111 SoundDeviceLocator *device; | |
| 112 GetDefaultPlaybackDevice(&device); | |
| 113 devices->push_back(device); | |
| 114 return true; | |
| 115 } | |
| 116 | |
| 117 bool NullSoundSystem::EnumerateCaptureDevices( | |
| 118 SoundSystemInterface::SoundDeviceLocatorList *devices) { | |
| 119 ClearSoundDeviceLocatorList(devices); | |
| 120 SoundDeviceLocator *device; | |
| 121 GetDefaultCaptureDevice(&device); | |
| 122 devices->push_back(device); | |
| 123 return true; | |
| 124 } | |
| 125 | |
| 126 bool NullSoundSystem::GetDefaultPlaybackDevice( | |
| 127 SoundDeviceLocator **device) { | |
| 128 *device = new NullSoundDeviceLocator(); | |
| 129 return true; | |
| 130 } | |
| 131 | |
| 132 bool NullSoundSystem::GetDefaultCaptureDevice( | |
| 133 SoundDeviceLocator **device) { | |
| 134 *device = new NullSoundDeviceLocator(); | |
| 135 return true; | |
| 136 } | |
| 137 | |
| 138 SoundOutputStreamInterface *NullSoundSystem::OpenPlaybackDevice( | |
| 139 const SoundDeviceLocator *device, | |
| 140 const OpenParams ¶ms) { | |
| 141 return new NullSoundOutputStream(); | |
| 142 } | |
| 143 | |
| 144 SoundInputStreamInterface *NullSoundSystem::OpenCaptureDevice( | |
| 145 const SoundDeviceLocator *device, | |
| 146 const OpenParams ¶ms) { | |
| 147 return new NullSoundInputStream(); | |
| 148 } | |
| 149 | |
| 150 const char *NullSoundSystem::GetName() const { | |
| 151 return kNullName; | |
| 152 } | |
| 153 | |
| 154 } // namespace rtc | |
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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