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         typedef void (*focusReleaseCallback)();
  35
  36         AudioStream(focusReleaseCallback focusReleaseCb);
  37         ~AudioStream();
  38
  39         int setAudioFormat(ttse_audio_type_e type, int rate);
  40         int acquireSoundFocus(const char* extra_info);
  41         int releaseSoundFocus();
  42         int prepareAudioOut();
  43         int unprepareAudioOut();
  44         void waitForPlay();
  45         AudioState getState();
  46         int playAudioData(char* buffer, unsigned int length);
  47
  48 private:
  49         static void __focusStateChangedCallback(sound_stream_info_h stream_info, sound_stream_focus_mask_e focus_mask,
  50                         sound_stream_focus_state_e focus_state, sound_stream_focus_change_reason_e reason_for_change, int sound_behavior, const char *extra_info,
  51                         void *user_data);
  52
  53         int createAudioHandle(ttse_audio_type_e type, int rate);
  54         void destroyAudioHandle();
  55
  56         void createSoundStreamInfo();
  57         void destroySoundStreamInfo();
  58
  59 private:
  60         audio_out_h __audioHandle;
  61         ttse_audio_type_e __audioType;
  62         int __audioRate;
  63         bool __prepared;
  64
  65         sound_stream_info_h __streamInfo;
  66         focusReleaseCallback __focusReleaseCallback;
  67         std::string __currentExtraInfo;
  68         bool __focusAquired;
  69
  70         AudioState __state;
  71 };
  72
  73
  74 #endif /* __TTSD_AUDIO_OUT_H_ */