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      1 /*
      2  *  Copyright (c) 2012 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 #ifndef WEBRTC_AUDIO_DEVICE_AUDIO_MIXER_MANAGER_PULSE_LINUX_H
     12 #define WEBRTC_AUDIO_DEVICE_AUDIO_MIXER_MANAGER_PULSE_LINUX_H
     13 
     14 #include "webrtc/modules/audio_device/include/audio_device.h"
     15 #include "webrtc/modules/audio_device/linux/pulseaudiosymboltable_linux.h"
     16 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
     17 #include "webrtc/typedefs.h"
     18 
     19 #include <pulse/pulseaudio.h>
     20 #include <stdint.h>
     21 
     22 #ifndef UINT32_MAX
     23 #define UINT32_MAX  ((uint32_t)-1)
     24 #endif
     25 
     26 namespace webrtc
     27 {
     28 
     29 class AudioMixerManagerLinuxPulse
     30 {
     31 public:
     32     int32_t SetPlayStream(pa_stream* playStream);
     33     int32_t SetRecStream(pa_stream* recStream);
     34     int32_t OpenSpeaker(uint16_t deviceIndex);
     35     int32_t OpenMicrophone(uint16_t deviceIndex);
     36     int32_t SetSpeakerVolume(uint32_t volume);
     37     int32_t SpeakerVolume(uint32_t& volume) const;
     38     int32_t MaxSpeakerVolume(uint32_t& maxVolume) const;
     39     int32_t MinSpeakerVolume(uint32_t& minVolume) const;
     40     int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const;
     41     int32_t SpeakerVolumeIsAvailable(bool& available);
     42     int32_t SpeakerMuteIsAvailable(bool& available);
     43     int32_t SetSpeakerMute(bool enable);
     44     int32_t StereoPlayoutIsAvailable(bool& available);
     45     int32_t StereoRecordingIsAvailable(bool& available);
     46     int32_t SpeakerMute(bool& enabled) const;
     47     int32_t MicrophoneMuteIsAvailable(bool& available);
     48     int32_t SetMicrophoneMute(bool enable);
     49     int32_t MicrophoneMute(bool& enabled) const;
     50     int32_t MicrophoneBoostIsAvailable(bool& available);
     51     int32_t SetMicrophoneBoost(bool enable);
     52     int32_t MicrophoneBoost(bool& enabled) const;
     53     int32_t MicrophoneVolumeIsAvailable(bool& available);
     54     int32_t SetMicrophoneVolume(uint32_t volume);
     55     int32_t MicrophoneVolume(uint32_t& volume) const;
     56     int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const;
     57     int32_t MinMicrophoneVolume(uint32_t& minVolume) const;
     58     int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const;
     59     int32_t SetPulseAudioObjects(pa_threaded_mainloop* mainloop,
     60                                  pa_context* context);
     61     int32_t Close();
     62     int32_t CloseSpeaker();
     63     int32_t CloseMicrophone();
     64     bool SpeakerIsInitialized() const;
     65     bool MicrophoneIsInitialized() const;
     66 
     67 public:
     68     AudioMixerManagerLinuxPulse(const int32_t id);
     69     ~AudioMixerManagerLinuxPulse();
     70 
     71 private:
     72     static void PaSinkInfoCallback(pa_context *c, const pa_sink_info *i,
     73                                    int eol, void *pThis);
     74     static void PaSinkInputInfoCallback(pa_context *c,
     75                                         const pa_sink_input_info *i, int eol,
     76                                         void *pThis);
     77     static void PaSourceInfoCallback(pa_context *c, const pa_source_info *i,
     78                                      int eol, void *pThis);
     79     static void
     80         PaSetVolumeCallback(pa_context* /*c*/, int success, void* /*pThis*/);
     81     void PaSinkInfoCallbackHandler(const pa_sink_info *i, int eol);
     82     void PaSinkInputInfoCallbackHandler(const pa_sink_input_info *i, int eol);
     83     void PaSourceInfoCallbackHandler(const pa_source_info *i, int eol);
     84 
     85     void ResetCallbackVariables() const;
     86     void WaitForOperationCompletion(pa_operation* paOperation) const;
     87     void PaLock() const;
     88     void PaUnLock() const;
     89 
     90     bool GetSinkInputInfo() const;
     91     bool GetSinkInfoByIndex(int device_index)const ;
     92     bool GetSourceInfoByIndex(int device_index) const;
     93 
     94 private:
     95     CriticalSectionWrapper& _critSect;
     96     int32_t _id;
     97     int16_t _paOutputDeviceIndex;
     98     int16_t _paInputDeviceIndex;
     99 
    100     pa_stream* _paPlayStream;
    101     pa_stream* _paRecStream;
    102 
    103     pa_threaded_mainloop* _paMainloop;
    104     pa_context* _paContext;
    105 
    106     mutable uint32_t _paVolume;
    107     mutable uint32_t _paMute;
    108     mutable uint32_t _paVolSteps;
    109     bool _paSpeakerMute;
    110     mutable uint32_t _paSpeakerVolume;
    111     mutable uint8_t _paChannels;
    112     bool _paObjectsSet;
    113     mutable bool _callbackValues;
    114 };
    115 
    116 }
    117 
    118 #endif  // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_MIXER_MANAGER_PULSE_LINUX_H_
    119