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Diffstat (limited to 'third_party/libwebrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h b/third_party/libwebrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h new file mode 100644 index 0000000000..d98287822d --- /dev/null +++ b/third_party/libwebrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2011 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 AUDIO_DEVICE_AUDIO_MIXER_MANAGER_ALSA_LINUX_H_ +#define AUDIO_DEVICE_AUDIO_MIXER_MANAGER_ALSA_LINUX_H_ + +#include <alsa/asoundlib.h> + +#include "modules/audio_device/include/audio_device.h" +#include "modules/audio_device/linux/alsasymboltable_linux.h" +#include "rtc_base/synchronization/mutex.h" + +namespace webrtc { + +class AudioMixerManagerLinuxALSA { + public: + int32_t OpenSpeaker(char* deviceName) RTC_LOCKS_EXCLUDED(mutex_); + int32_t OpenMicrophone(char* deviceName) RTC_LOCKS_EXCLUDED(mutex_); + int32_t SetSpeakerVolume(uint32_t volume) RTC_LOCKS_EXCLUDED(mutex_); + int32_t SpeakerVolume(uint32_t& volume) const; + int32_t MaxSpeakerVolume(uint32_t& maxVolume) const; + int32_t MinSpeakerVolume(uint32_t& minVolume) const; + int32_t SpeakerVolumeIsAvailable(bool& available); + int32_t SpeakerMuteIsAvailable(bool& available); + int32_t SetSpeakerMute(bool enable) RTC_LOCKS_EXCLUDED(mutex_); + int32_t SpeakerMute(bool& enabled) const; + int32_t MicrophoneMuteIsAvailable(bool& available); + int32_t SetMicrophoneMute(bool enable) RTC_LOCKS_EXCLUDED(mutex_); + int32_t MicrophoneMute(bool& enabled) const; + int32_t MicrophoneVolumeIsAvailable(bool& available); + int32_t SetMicrophoneVolume(uint32_t volume) RTC_LOCKS_EXCLUDED(mutex_); + int32_t MicrophoneVolume(uint32_t& volume) const; + int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const; + int32_t MinMicrophoneVolume(uint32_t& minVolume) const; + int32_t Close() RTC_LOCKS_EXCLUDED(mutex_); + int32_t CloseSpeaker() RTC_LOCKS_EXCLUDED(mutex_); + int32_t CloseMicrophone() RTC_LOCKS_EXCLUDED(mutex_); + bool SpeakerIsInitialized() const; + bool MicrophoneIsInitialized() const; + + public: + AudioMixerManagerLinuxALSA(); + ~AudioMixerManagerLinuxALSA(); + + private: + int32_t CloseSpeakerLocked() RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_); + int32_t CloseMicrophoneLocked() RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_); + int32_t LoadMicMixerElement() const; + int32_t LoadSpeakerMixerElement() const; + void GetControlName(char* controlName, char* deviceName) const; + + private: + Mutex mutex_; + mutable snd_mixer_t* _outputMixerHandle; + char _outputMixerStr[kAdmMaxDeviceNameSize]; + mutable snd_mixer_t* _inputMixerHandle; + char _inputMixerStr[kAdmMaxDeviceNameSize]; + mutable snd_mixer_elem_t* _outputMixerElement; + mutable snd_mixer_elem_t* _inputMixerElement; +}; + +} // namespace webrtc + +#endif // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_MIXER_MANAGER_ALSA_LINUX_H_ |