include/CPulseAudioClient.h

   1 /*
   2  * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef __TIZEN_MEDIA_AUDIO_IO_CPULSEAUDIO_CLIENT_H__
  18 #define __TIZEN_MEDIA_AUDIO_IO_CPULSEAUDIO_CLIENT_H__
  19
  20
  21 #ifdef __cplusplus
  22
  23
  24 #include <pulse/pulseaudio.h>
  25
  26
  27 namespace tizen_media_audio {
  28
  29
  30     /**
  31      * PULSE Thread
  32      */
  33     class CPulseStreamSpec;
  34     class CPulseAudioClient {
  35     public:
  36         enum class EStreamDirection : unsigned int {
  37             STREAM_DIRECTION_RECORD,        /**< Record stream */
  38             STREAM_DIRECTION_PLAYBACK       /**< Playback stream */
  39         };
  40
  41         /* Constants */
  42         static const char* CLIENT_NAME;
  43
  44         /* Constructor & Destructor */
  45         CPulseAudioClient(EStreamDirection      direction,
  46                           CPulseStreamSpec&     spec,
  47                           IPulseStreamListener* listener);
  48         ~CPulseAudioClient();
  49
  50         /* Implemented Methods */
  51         void initialize();
  52         void finalize();
  53
  54         /* Methods */
  55         int read(void* buffer, size_t length);
  56         int peek(const void** buffer, size_t* length);
  57         int drop();
  58         int write(const void* buffer, size_t length);
  59
  60         void cork(bool cork);
  61         bool isCorked();
  62
  63         bool drain();
  64         bool flush();
  65
  66         void checkRunningState();
  67         bool isInThread() noexcept;
  68
  69         size_t getWritableSize();
  70         size_t getReadableSize();
  71
  72         size_t getBufferSize();
  73
  74         pa_usec_t getLatency();
  75         pa_usec_t getFinalLatency();
  76
  77         void applyRecordVolume(double volume);
  78
  79     private:
  80         /* Members */
  81         EStreamDirection      __mDirection;
  82         CPulseStreamSpec      __mSpec;
  83         IPulseStreamListener* __mpListener;
  84
  85         pa_threaded_mainloop* __mpMainloop;
  86         pa_context*           __mpContext;
  87         pa_stream*            __mpStream;
  88         pa_proplist*          __mpPropList;
  89
  90         bool                  __mIsInit;
  91         bool                  __mIsOperationSuccess;
  92
  93         const void*           __mpSyncReadDataPtr;
  94         size_t                __mSyncReadIndex;
  95         size_t                __mSyncReadLength;
  96         bool                  __mIsUsedSyncRead;
  97         bool                  __mIsFirstStream;
  98         bool                  __mIsDraining;
  99         bool                  __mIsStarted;
 100
 101         /* Static Methods */
 102
 103         /* Private Method */
 104
 105         /* Private Callback Method */
 106         static void __contextStateChangeCb(pa_context* c, void* user_data);
 107         static void __streamStateChangeCb(pa_stream* s, void* user_data);
 108         static void __streamCaptureCb(pa_stream* s, size_t length, void* user_data);
 109         static void __streamPlaybackCb(pa_stream* s, size_t length, void* user_data);
 110         static void __streamLatencyUpdateCb(pa_stream* s, void* user_data);
 111         static void __streamStartedCb(pa_stream* s, void* user_data);
 112         static void __streamUnderflowCb(pa_stream* s, void* user_data);
 113         static void __streamEventCb(pa_stream* s, const char *name, pa_proplist *pl, void *user_data);
 114         static void __successStreamCb(pa_stream* s, int success, void* user_data);
 115         static void __successDrainCb(pa_stream* s, int success, void* user_data);
 116         static void __successDrainCbInThread(pa_stream* s, int success, void* user_data);
 117         static void __successVolumeCb(pa_context* c, int success, void* user_data);
 118
 119     };
 120
 121
 122 } /* namespace tizen_media_audio */
 123
 124 #endif
 125 #endif /* __TIZEN_MEDIA_AUDIO_IO_CPULSEAUDIO_CLIENT_H__ */