| /* |
| * 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 "audio_device_generic.h" |
| #include "critical_section_wrapper.h" |
| #include "audio_mixer_manager_alsa_linux.h" |
| |
| #include <sys/soundcard.h> |
| #include <sys/ioctl.h> |
| |
| #include <alsa/asoundlib.h> |
| |
| namespace webrtc |
| { |
| class EventWrapper; |
| class ThreadWrapper; |
| |
| class AudioDeviceLinuxALSA : public AudioDeviceGeneric |
| { |
| public: |
| AudioDeviceLinuxALSA(const int32_t id); |
| ~AudioDeviceLinuxALSA(); |
| |
| // Retrieve the currently utilized audio layer |
| virtual int32_t ActiveAudioLayer( |
| AudioDeviceModule::AudioLayer& audioLayer) const; |
| |
| // Main initializaton and termination |
| virtual int32_t Init(); |
| virtual int32_t Terminate(); |
| virtual bool Initialized() const; |
| |
| // Device enumeration |
| virtual int16_t PlayoutDevices(); |
| virtual int16_t RecordingDevices(); |
| virtual int32_t PlayoutDeviceName( |
| uint16_t index, |
| char name[kAdmMaxDeviceNameSize], |
| char guid[kAdmMaxGuidSize]); |
| virtual int32_t RecordingDeviceName( |
| uint16_t index, |
| char name[kAdmMaxDeviceNameSize], |
| char guid[kAdmMaxGuidSize]); |
| |
| // Device selection |
| virtual int32_t SetPlayoutDevice(uint16_t index); |
| virtual int32_t SetPlayoutDevice( |
| AudioDeviceModule::WindowsDeviceType device); |
| virtual int32_t SetRecordingDevice(uint16_t index); |
| virtual int32_t SetRecordingDevice( |
| AudioDeviceModule::WindowsDeviceType device); |
| |
| // Audio transport initialization |
| virtual int32_t PlayoutIsAvailable(bool& available); |
| virtual int32_t InitPlayout(); |
| virtual bool PlayoutIsInitialized() const; |
| virtual int32_t RecordingIsAvailable(bool& available); |
| virtual int32_t InitRecording(); |
| virtual bool RecordingIsInitialized() const; |
| |
| // Audio transport control |
| virtual int32_t StartPlayout(); |
| virtual int32_t StopPlayout(); |
| virtual bool Playing() const; |
| virtual int32_t StartRecording(); |
| virtual int32_t StopRecording(); |
| virtual bool Recording() const; |
| |
| // Microphone Automatic Gain Control (AGC) |
| virtual int32_t SetAGC(bool enable); |
| virtual bool AGC() const; |
| |
| // Volume control based on the Windows Wave API (Windows only) |
| virtual int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight); |
| virtual int32_t WaveOutVolume(uint16_t& volumeLeft, |
| uint16_t& volumeRight) const; |
| |
| // Audio mixer initialization |
| virtual int32_t SpeakerIsAvailable(bool& available); |
| virtual int32_t InitSpeaker(); |
| virtual bool SpeakerIsInitialized() const; |
| virtual int32_t MicrophoneIsAvailable(bool& available); |
| virtual int32_t InitMicrophone(); |
| virtual bool MicrophoneIsInitialized() const; |
| |
| // Speaker volume controls |
| virtual int32_t SpeakerVolumeIsAvailable(bool& available); |
| virtual int32_t SetSpeakerVolume(uint32_t volume); |
| virtual int32_t SpeakerVolume(uint32_t& volume) const; |
| virtual int32_t MaxSpeakerVolume(uint32_t& maxVolume) const; |
| virtual int32_t MinSpeakerVolume(uint32_t& minVolume) const; |
| virtual int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const; |
| |
| // Microphone volume controls |
| virtual int32_t MicrophoneVolumeIsAvailable(bool& available); |
| virtual int32_t SetMicrophoneVolume(uint32_t volume); |
| virtual int32_t MicrophoneVolume(uint32_t& volume) const; |
| virtual int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const; |
| virtual int32_t MinMicrophoneVolume(uint32_t& minVolume) const; |
| virtual int32_t MicrophoneVolumeStepSize( |
| uint16_t& stepSize) const; |
| |
| // Speaker mute control |
| virtual int32_t SpeakerMuteIsAvailable(bool& available); |
| virtual int32_t SetSpeakerMute(bool enable); |
| virtual int32_t SpeakerMute(bool& enabled) const; |
| |
| // Microphone mute control |
| virtual int32_t MicrophoneMuteIsAvailable(bool& available); |
| virtual int32_t SetMicrophoneMute(bool enable); |
| virtual int32_t MicrophoneMute(bool& enabled) const; |
| |
| // Microphone boost control |
| virtual int32_t MicrophoneBoostIsAvailable(bool& available); |
| virtual int32_t SetMicrophoneBoost(bool enable); |
| virtual int32_t MicrophoneBoost(bool& enabled) const; |
| |
| // Stereo support |
| virtual int32_t StereoPlayoutIsAvailable(bool& available); |
| virtual int32_t SetStereoPlayout(bool enable); |
| virtual int32_t StereoPlayout(bool& enabled) const; |
| virtual int32_t StereoRecordingIsAvailable(bool& available); |
| virtual int32_t SetStereoRecording(bool enable); |
| virtual int32_t StereoRecording(bool& enabled) const; |
| |
| // Delay information and control |
| virtual int32_t SetPlayoutBuffer( |
| const AudioDeviceModule::BufferType type, |
| uint16_t sizeMS); |
| virtual int32_t PlayoutBuffer( |
| AudioDeviceModule::BufferType& type, |
| uint16_t& sizeMS) const; |
| virtual int32_t PlayoutDelay(uint16_t& delayMS) const; |
| virtual int32_t RecordingDelay(uint16_t& delayMS) const; |
| |
| // CPU load |
| virtual int32_t CPULoad(uint16_t& load) const; |
| |
| public: |
| virtual bool PlayoutWarning() const; |
| virtual bool PlayoutError() const; |
| virtual bool RecordingWarning() const; |
| virtual bool RecordingError() const; |
| virtual void ClearPlayoutWarning(); |
| virtual void ClearPlayoutError(); |
| virtual void ClearRecordingWarning(); |
| virtual void ClearRecordingError(); |
| |
| public: |
| virtual void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer); |
| |
| 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: |
| void Lock() { _critSect.Enter(); }; |
| void UnLock() { _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; |
| |
| ThreadWrapper* _ptrThreadRec; |
| ThreadWrapper* _ptrThreadPlay; |
| uint32_t _recThreadID; |
| uint32_t _playThreadID; |
| |
| 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 |
| }; |
| |
| } |
| |
| #endif // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_DEVICE_ALSA_LINUX_H_ |
