| /* |
| * 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 "modules/audio_device/include/audio_device.h" |
| #include "modules/audio_device/linux/alsasymboltable_linux.h" |
| #include "rtc_base/critical_section.h" |
| |
| #include <alsa/asoundlib.h> |
| |
| namespace webrtc { |
| |
| class AudioMixerManagerLinuxALSA { |
| public: |
| int32_t OpenSpeaker(char* deviceName); |
| int32_t OpenMicrophone(char* deviceName); |
| int32_t SetSpeakerVolume(uint32_t volume); |
| 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); |
| int32_t SpeakerMute(bool& enabled) const; |
| int32_t MicrophoneMuteIsAvailable(bool& available); |
| int32_t SetMicrophoneMute(bool enable); |
| int32_t MicrophoneMute(bool& enabled) const; |
| int32_t MicrophoneVolumeIsAvailable(bool& available); |
| int32_t SetMicrophoneVolume(uint32_t volume); |
| int32_t MicrophoneVolume(uint32_t& volume) const; |
| int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const; |
| int32_t MinMicrophoneVolume(uint32_t& minVolume) const; |
| int32_t Close(); |
| int32_t CloseSpeaker(); |
| int32_t CloseMicrophone(); |
| bool SpeakerIsInitialized() const; |
| bool MicrophoneIsInitialized() const; |
| |
| public: |
| AudioMixerManagerLinuxALSA(); |
| ~AudioMixerManagerLinuxALSA(); |
| |
| private: |
| int32_t LoadMicMixerElement() const; |
| int32_t LoadSpeakerMixerElement() const; |
| void GetControlName(char* controlName, char* deviceName) const; |
| |
| private: |
| rtc::CriticalSection _critSect; |
| 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_ |