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 CPulseAudioVolume;
  34     class CPulseAudioPolicy;
  35     class CPulseStreamSpec;
  36     class CPulseAudioClient {
  37     public:
  38         enum class EStreamDirection : unsigned int {
  39             STREAM_DIRECTION_RECORD,        /**< Record stream */
  40             STREAM_DIRECTION_PLAYBACK       /**< Playback stream */
  41         };
  42
  43         /* Constants */
  44         static const char* CLIENT_NAME;
  45
  46         /* Constructor & Destructor */
  47         CPulseAudioClient(EStreamDirection      direction,
  48                           CPulseStreamSpec&     spec,
  49                           IPulseStreamListener* listener);
  50         ~CPulseAudioClient();
  51
  52         /* Implemented Methods */
  53         void initialize() throw(CAudioError);
  54         void finalize();
  55
  56         /* Methods */
  57         int read(void* buffer, size_t length) throw(CAudioError);
  58         int peek(const void** buffer, size_t* length) throw(CAudioError);
  59         int drop() throw(CAudioError);
  60         int write(const void* buffer, size_t length) throw(CAudioError);
  61
  62         void cork(bool cork) throw(CAudioError);
  63         bool isCorked() throw(CAudioError);
  64
  65         bool drain() throw(CAudioError);
  66         bool flush() throw(CAudioError);
  67
  68         void checkRunningState() throw(CAudioError);
  69         bool isInThread() throw(CAudioError);
  70
  71         size_t getWritableSize() throw(CAudioError);
  72         size_t getReadableSize() throw(CAudioError);
  73
  74         size_t getBufferSize() throw(CAudioError);
  75
  76         pa_usec_t getLatency() throw(CAudioError);
  77         pa_usec_t getFinalLatency() throw(CAudioError);
  78
  79         /* Setter & Getter */
  80         EStreamDirection getStreamDirection();
  81         CPulseStreamSpec getStreamSpec();
  82
  83     private:
  84         /* Members */
  85         EStreamDirection      __mDirection;
  86         CPulseStreamSpec      __mSpec;
  87         IPulseStreamListener* __mpListener;
  88
  89         pa_threaded_mainloop* __mpMainloop;
  90         pa_context*           __mpContext;
  91         pa_stream*            __mpStream;
  92         pa_proplist*          __mpPropList;
  93
  94         bool                  __mIsInit;
  95         bool                  __mIsOperationSuccess;
  96
  97         const void*           __mpSyncReadDataPtr;
  98         size_t                __mSyncReadIndex;
  99         size_t                __mSyncReadLength;
 100         bool                  __mIsUsedSyncRead;
 101
 102         /* Static Methods */
 103
 104         /* Private Method */
 105
 106         /* Private Calblack Method */
 107         static void __contextStateChangeCb(pa_context* c, void* user_data);
 108         static void __successContextCb(pa_context* c, int success, void* user_data);
 109
 110         static void __streamStateChangeCb(pa_stream* s, void* user_data);
 111         static void __streamCaptureCb(pa_stream* s, size_t length, void* user_data);
 112         static void __streamPlaybackCb(pa_stream* s, size_t length, void* user_data);
 113         static void __streamLatencyUpdateCb(pa_stream* s, void* user_data);
 114         static void __successStreamCb(pa_stream* s, int success, void* user_data);
 115     };
 116
 117
 118 } /* namespace tizen_media_audio */
 119
 120 #endif
 121 #endif /* __TIZEN_MEDIA_AUDIO_IO_CPULSEAUDIO_CLIENT_H__ */