| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_ALSA_LINUX_H |
| #define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_ALSA_LINUX_H |
| |
| #include <memory> |
| |
| #include "webrtc/base/platform_thread.h" |
| #include "webrtc/modules/audio_device/audio_device_generic.h" |
| #include "webrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h" |
| #include "webrtc/system_wrappers/include/critical_section_wrapper.h" |
| |
| #if defined(USE_X11) |
| #include <X11/Xlib.h> |
| #endif |
| #include <alsa/asoundlib.h> |
| #include <sys/ioctl.h> |
| #include <sys/soundcard.h> |
| |
| |
| namespace webrtc |
| { |
| class EventWrapper; |
| |
| class AudioDeviceLinuxALSA : public AudioDeviceGeneric |
| { |
| public: |
| AudioDeviceLinuxALSA(const int32_t id); |
| virtual ~AudioDeviceLinuxALSA(); |
| |
| // Retrieve the currently utilized audio layer |
| int32_t ActiveAudioLayer( |
| AudioDeviceModule::AudioLayer& audioLayer) const override; |
| |
| // Main initializaton and termination |
| InitStatus Init() override; |
| int32_t Terminate() override; |
| bool Initialized() const override; |
| |
| // Device enumeration |
| int16_t PlayoutDevices() override; |
| int16_t RecordingDevices() override; |
| int32_t PlayoutDeviceName(uint16_t index, |
| char name[kAdmMaxDeviceNameSize], |
| char guid[kAdmMaxGuidSize]) override; |
| int32_t RecordingDeviceName(uint16_t index, |
| char name[kAdmMaxDeviceNameSize], |
| char guid[kAdmMaxGuidSize]) override; |
| |
| // Device selection |
| int32_t SetPlayoutDevice(uint16_t index) override; |
| int32_t SetPlayoutDevice( |
| AudioDeviceModule::WindowsDeviceType device) override; |
| int32_t SetRecordingDevice(uint16_t index) override; |
| int32_t SetRecordingDevice( |
| AudioDeviceModule::WindowsDeviceType device) override; |
| |
| // Audio transport initialization |
| int32_t PlayoutIsAvailable(bool& available) override; |
| int32_t InitPlayout() override; |
| bool PlayoutIsInitialized() const override; |
| int32_t RecordingIsAvailable(bool& available) override; |
| int32_t InitRecording() override; |
| bool RecordingIsInitialized() const override; |
| |
| // Audio transport control |
| int32_t StartPlayout() override; |
| int32_t StopPlayout() override; |
| bool Playing() const override; |
| int32_t StartRecording() override; |
| int32_t StopRecording() override; |
| bool Recording() const override; |
| |
| // Microphone Automatic Gain Control (AGC) |
| int32_t SetAGC(bool enable) override; |
| bool AGC() const override; |
| |
| // Volume control based on the Windows Wave API (Windows only) |
| int32_t SetWaveOutVolume(uint16_t volumeLeft, |
| uint16_t volumeRight) override; |
| int32_t WaveOutVolume(uint16_t& volumeLeft, |
| uint16_t& volumeRight) const override; |
| |
| // Audio mixer initialization |
| int32_t InitSpeaker() override; |
| bool SpeakerIsInitialized() const override; |
| int32_t InitMicrophone() override; |
| bool MicrophoneIsInitialized() const override; |
| |
| // Speaker volume controls |
| int32_t SpeakerVolumeIsAvailable(bool& available) override; |
| int32_t SetSpeakerVolume(uint32_t volume) override; |
| int32_t SpeakerVolume(uint32_t& volume) const override; |
| int32_t MaxSpeakerVolume(uint32_t& maxVolume) const override; |
| int32_t MinSpeakerVolume(uint32_t& minVolume) const override; |
| int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const override; |
| |
| // Microphone volume controls |
| int32_t MicrophoneVolumeIsAvailable(bool& available) override; |
| int32_t SetMicrophoneVolume(uint32_t volume) override; |
| int32_t MicrophoneVolume(uint32_t& volume) const override; |
| int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const override; |
| int32_t MinMicrophoneVolume(uint32_t& minVolume) const override; |
| int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const override; |
| |
| // Speaker mute control |
| int32_t SpeakerMuteIsAvailable(bool& available) override; |
| int32_t SetSpeakerMute(bool enable) override; |
| int32_t SpeakerMute(bool& enabled) const override; |
| |
| // Microphone mute control |
| int32_t MicrophoneMuteIsAvailable(bool& available) override; |
| int32_t SetMicrophoneMute(bool enable) override; |
| int32_t MicrophoneMute(bool& enabled) const override; |
| |
| // Microphone boost control |
| int32_t MicrophoneBoostIsAvailable(bool& available) override; |
| int32_t SetMicrophoneBoost(bool enable) override; |
| int32_t MicrophoneBoost(bool& enabled) const override; |
| |
| // Stereo support |
| int32_t StereoPlayoutIsAvailable(bool& available) override; |
| int32_t SetStereoPlayout(bool enable) override; |
| int32_t StereoPlayout(bool& enabled) const override; |
| int32_t StereoRecordingIsAvailable(bool& available) override; |
| int32_t SetStereoRecording(bool enable) override; |
| int32_t StereoRecording(bool& enabled) const override; |
| |
| // Delay information and control |
| int32_t SetPlayoutBuffer(const AudioDeviceModule::BufferType type, |
| uint16_t sizeMS) override; |
| int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type, |
| uint16_t& sizeMS) const override; |
| int32_t PlayoutDelay(uint16_t& delayMS) const override; |
| int32_t RecordingDelay(uint16_t& delayMS) const override; |
| |
| // CPU load |
| int32_t CPULoad(uint16_t& load) const override; |
| |
| public: |
| bool PlayoutWarning() const override; |
| bool PlayoutError() const override; |
| bool RecordingWarning() const override; |
| bool RecordingError() const override; |
| void ClearPlayoutWarning() override; |
| void ClearPlayoutError() override; |
| void ClearRecordingWarning() override; |
| void ClearRecordingError() override; |
| |
| public: |
| void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) override; |
| |
| private: |
| int32_t GetDevicesInfo(const int32_t function, |
| const bool playback, |
| const int32_t enumDeviceNo = 0, |
| char* enumDeviceName = NULL, |
| const int32_t ednLen = 0) const; |
| int32_t ErrorRecovery(int32_t error, snd_pcm_t* deviceHandle); |
| |
| private: |
| bool KeyPressed() const; |
| |
| private: |
| void Lock() EXCLUSIVE_LOCK_FUNCTION(_critSect) { _critSect.Enter(); }; |
| void UnLock() UNLOCK_FUNCTION(_critSect) { _critSect.Leave(); }; |
| private: |
| inline int32_t InputSanityCheckAfterUnlockedPeriod() const; |
| inline int32_t OutputSanityCheckAfterUnlockedPeriod() const; |
| |
| private: |
| static bool RecThreadFunc(void*); |
| static bool PlayThreadFunc(void*); |
| bool RecThreadProcess(); |
| bool PlayThreadProcess(); |
| |
| private: |
| AudioDeviceBuffer* _ptrAudioBuffer; |
| |
| CriticalSectionWrapper& _critSect; |
| |
| // TODO(pbos): Make plain members and start/stop instead of resetting these |
| // pointers. A thread can be reused. |
| std::unique_ptr<rtc::PlatformThread> _ptrThreadRec; |
| std::unique_ptr<rtc::PlatformThread> _ptrThreadPlay; |
| |
| int32_t _id; |
| |
| AudioMixerManagerLinuxALSA _mixerManager; |
| |
| uint16_t _inputDeviceIndex; |
| uint16_t _outputDeviceIndex; |
| bool _inputDeviceIsSpecified; |
| bool _outputDeviceIsSpecified; |
| |
| snd_pcm_t* _handleRecord; |
| snd_pcm_t* _handlePlayout; |
| |
| snd_pcm_uframes_t _recordingBuffersizeInFrame; |
| snd_pcm_uframes_t _recordingPeriodSizeInFrame; |
| snd_pcm_uframes_t _playoutBufferSizeInFrame; |
| snd_pcm_uframes_t _playoutPeriodSizeInFrame; |
| |
| ssize_t _recordingBufferSizeIn10MS; |
| ssize_t _playoutBufferSizeIn10MS; |
| uint32_t _recordingFramesIn10MS; |
| uint32_t _playoutFramesIn10MS; |
| |
| uint32_t _recordingFreq; |
| uint32_t _playoutFreq; |
| uint8_t _recChannels; |
| uint8_t _playChannels; |
| |
| int8_t* _recordingBuffer; // in byte |
| int8_t* _playoutBuffer; // in byte |
| uint32_t _recordingFramesLeft; |
| uint32_t _playoutFramesLeft; |
| |
| AudioDeviceModule::BufferType _playBufType; |
| |
| private: |
| bool _initialized; |
| bool _recording; |
| bool _playing; |
| bool _recIsInitialized; |
| bool _playIsInitialized; |
| bool _AGC; |
| |
| snd_pcm_sframes_t _recordingDelay; |
| snd_pcm_sframes_t _playoutDelay; |
| |
| uint16_t _playWarning; |
| uint16_t _playError; |
| uint16_t _recWarning; |
| uint16_t _recError; |
| |
| uint16_t _playBufDelay; // playback delay |
| uint16_t _playBufDelayFixed; // fixed playback delay |
| |
| char _oldKeyState[32]; |
| #if defined(USE_X11) |
| Display* _XDisplay; |
| #endif |
| }; |
| |
| } |
| |
| #endif // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_DEVICE_ALSA_LINUX_H_ |