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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/include/critical_section_wrapper.h"
     17 #include "webrtc/typedefs.h"
     18 #include "webrtc/base/thread_checker.h"
     19 
     20 #include <pulse/pulseaudio.h>
     21 #include <stdint.h>
     22 
     23 #ifndef UINT32_MAX
     24 #define UINT32_MAX  ((uint32_t)-1)
     25 #endif
     26 
     27 namespace webrtc
     28 {
     29 
     30 class AudioMixerManagerLinuxPulse
     31 {
     32 public:
     33     int32_t SetPlayStream(pa_stream* playStream);
     34     int32_t SetRecStream(pa_stream* recStream);
     35     int32_t OpenSpeaker(uint16_t deviceIndex);
     36     int32_t OpenMicrophone(uint16_t deviceIndex);
     37     int32_t SetSpeakerVolume(uint32_t volume);
     38     int32_t SpeakerVolume(uint32_t& volume) const;
     39     int32_t MaxSpeakerVolume(uint32_t& maxVolume) const;
     40     int32_t MinSpeakerVolume(uint32_t& minVolume) const;
     41     int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const;
     42     int32_t SpeakerVolumeIsAvailable(bool& available);
     43     int32_t SpeakerMuteIsAvailable(bool& available);
     44     int32_t SetSpeakerMute(bool enable);
     45     int32_t StereoPlayoutIsAvailable(bool& available);
     46     int32_t StereoRecordingIsAvailable(bool& available);
     47     int32_t SpeakerMute(bool& enabled) const;
     48     int32_t MicrophoneMuteIsAvailable(bool& available);
     49     int32_t SetMicrophoneMute(bool enable);
     50     int32_t MicrophoneMute(bool& enabled) const;
     51     int32_t MicrophoneBoostIsAvailable(bool& available);
     52     int32_t SetMicrophoneBoost(bool enable);
     53     int32_t MicrophoneBoost(bool& enabled) const;
     54     int32_t MicrophoneVolumeIsAvailable(bool& available);
     55     int32_t SetMicrophoneVolume(uint32_t volume);
     56     int32_t MicrophoneVolume(uint32_t& volume) const;
     57     int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const;
     58     int32_t MinMicrophoneVolume(uint32_t& minVolume) const;
     59     int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const;
     60     int32_t SetPulseAudioObjects(pa_threaded_mainloop* mainloop,
     61                                  pa_context* context);
     62     int32_t Close();
     63     int32_t CloseSpeaker();
     64     int32_t CloseMicrophone();
     65     bool SpeakerIsInitialized() const;
     66     bool MicrophoneIsInitialized() const;
     67 
     68 public:
     69     AudioMixerManagerLinuxPulse(const int32_t id);
     70     ~AudioMixerManagerLinuxPulse();
     71 
     72 private:
     73     static void PaSinkInfoCallback(pa_context *c, const pa_sink_info *i,
     74                                    int eol, void *pThis);
     75     static void PaSinkInputInfoCallback(pa_context *c,
     76                                         const pa_sink_input_info *i, int eol,
     77                                         void *pThis);
     78     static void PaSourceInfoCallback(pa_context *c, const pa_source_info *i,
     79                                      int eol, void *pThis);
     80     static void
     81         PaSetVolumeCallback(pa_context* /*c*/, int success, void* /*pThis*/);
     82     void PaSinkInfoCallbackHandler(const pa_sink_info *i, int eol);
     83     void PaSinkInputInfoCallbackHandler(const pa_sink_input_info *i, int eol);
     84     void PaSourceInfoCallbackHandler(const pa_source_info *i, int eol);
     85 
     86     void WaitForOperationCompletion(pa_operation* paOperation) const;
     87 
     88     bool GetSinkInputInfo() const;
     89     bool GetSinkInfoByIndex(int device_index)const ;
     90     bool GetSourceInfoByIndex(int device_index) const;
     91 
     92 private:
     93     int32_t _id;
     94     int16_t _paOutputDeviceIndex;
     95     int16_t _paInputDeviceIndex;
     96 
     97     pa_stream* _paPlayStream;
     98     pa_stream* _paRecStream;
     99 
    100     pa_threaded_mainloop* _paMainloop;
    101     pa_context* _paContext;
    102 
    103     mutable uint32_t _paVolume;
    104     mutable uint32_t _paMute;
    105     mutable uint32_t _paVolSteps;
    106     bool _paSpeakerMute;
    107     mutable uint32_t _paSpeakerVolume;
    108     mutable uint8_t _paChannels;
    109     bool _paObjectsSet;
    110 
    111     // Stores thread ID in constructor.
    112     // We can then use ThreadChecker::CalledOnValidThread() to ensure that
    113     // other methods are called from the same thread.
    114     // Currently only does RTC_DCHECK(thread_checker_.CalledOnValidThread()).
    115     rtc::ThreadChecker thread_checker_;
    116 };
    117 
    118 }
    119 
    120 #endif  // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_MIXER_MANAGER_PULSE_LINUX_H_
    121