server/AudioStream.h

   1 /*
   2 *  Copyright (c) 2021 Samsung Electronics Co., Ltd All Rights Reserved
   3 *  Licensed under the Apache License, Version 2.0 (the "License");
   4 *  you may not use this file except in compliance with the License.
   5 *  You may obtain a copy of the License at
   6 *  http://www.apache.org/licenses/LICENSE-2.0
   7 *  Unless required by applicable law or agreed to in writing, software
   8 *  distributed under the License is distributed on an "AS IS" BASIS,
   9 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10 *  See the License for the specific language governing permissions and
  11 *  limitations under the License.
  12 */
  13
  14
  15 #ifndef __TTSD_AUDIO_OUT_H_
  16 #define __TTSD_AUDIO_OUT_H_
  17
  18
  19 #include <string>
  20 #include <audio_io.h>
  21 #include <sound_manager.h>
  22
  23 #include "ttse.h"
  24
  25 class AudioStream {
  26 public:
  27         enum AudioState{
  28                 AUDIO_STATE_NONE = 0,
  29                 AUDIO_STATE_READY,
  30                 AUDIO_STATE_WAIT_FOR_PLAYING,
  31                 AUDIO_STATE_PLAY
  32         };
  33
  34         AudioStream();
  35         ~AudioStream();
  36
  37         int setAudioFormat(ttse_audio_type_e type, int rate);
  38         int acquireSoundFocus();
  39         int releaseSoundFocus();
  40         int prepareAudioOut();
  41         int unprepareAudioOut();
  42         void waitForPlay();
  43         AudioState getState();
  44         int playAudioData(char* buffer, unsigned int length);
  45
  46 private:
  47         static void focusStateChangedCallback(sound_stream_info_h stream_info, sound_stream_focus_mask_e focus_mask,
  48                         sound_stream_focus_state_e focus_state, sound_stream_focus_change_reason_e reason_for_change, int sound_behavior, const char *extra_info,
  49                         void *user_data);
  50
  51         bool isAudioHandleValid();
  52         bool isStreamInfoValid();
  53
  54         int createAudioHandle(ttse_audio_type_e type, int rate);
  55         void destroyAudioHandle();
  56
  57         int createSoundStreamInfo();
  58         void destroySoundStreamInfo();
  59
  60 private:
  61         audio_out_h mAudioHandle;
  62         ttse_audio_type_e mAudioType;
  63         int mAudioRate;
  64         bool mPrepared;
  65
  66         sound_stream_info_h mStreamInfo;
  67         bool mFocusAquired;
  68
  69         AudioState mState;
  70 };
  71
  72
  73 #endif /* __TTSD_AUDIO_OUT_H_ */