1 /* 2 * Copyright (C) 2009 The Android Open Source Project 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 AUDIO_PLAYER_H_ 18 19 #define AUDIO_PLAYER_H_ 20 21 #include <media/MediaPlayerInterface.h> 22 #include <media/stagefright/MediaBuffer.h> 23 #include <media/stagefright/TimeSource.h> 24 #include <utils/threads.h> 25 26 namespace android { 27 28 class MediaSource; 29 class AudioTrack; 30 31 class AudioPlayer : public TimeSource { 32 public: 33 AudioPlayer(const sp<MediaPlayerBase::AudioSink> &audioSink); 34 virtual ~AudioPlayer(); 35 36 // Caller retains ownership of "source". 37 void setSource(const sp<MediaSource> &source); 38 39 // Return time in us. 40 virtual int64_t getRealTimeUs(); 41 42 void start(); 43 44 void pause(); 45 void resume(); 46 47 void stop(); 48 49 // Returns the timestamp of the last buffer played (in us). 50 int64_t getMediaTimeUs(); 51 52 // Returns true iff a mapping is established, i.e. the AudioPlayer 53 // has played at least one frame of audio. 54 bool getMediaTimeMapping(int64_t *realtime_us, int64_t *mediatime_us); 55 56 status_t seekTo(int64_t time_us); 57 58 private: 59 sp<MediaSource> mSource; 60 AudioTrack *mAudioTrack; 61 62 MediaBuffer *mInputBuffer; 63 64 int mSampleRate; 65 int64_t mLatencyUs; 66 size_t mFrameSize; 67 68 Mutex mLock; 69 int64_t mNumFramesPlayed; 70 71 int64_t mPositionTimeMediaUs; 72 int64_t mPositionTimeRealUs; 73 74 bool mSeeking; 75 int64_t mSeekTimeUs; 76 77 bool mStarted; 78 79 sp<MediaPlayerBase::AudioSink> mAudioSink; 80 81 static void AudioCallback(int event, void *user, void *info); 82 void AudioCallback(int event, void *info); 83 84 static void AudioSinkCallback( 85 MediaPlayerBase::AudioSink *audioSink, 86 void *data, size_t size, void *me); 87 88 void fillBuffer(void *data, size_t size); 89 90 int64_t getRealTimeUsLocked() const; 91 92 AudioPlayer(const AudioPlayer &); 93 AudioPlayer &operator=(const AudioPlayer &); 94 }; 95 96 } // namespace android 97 98 #endif // AUDIO_PLAYER_H_ 99