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 class AwesomePlayer; 31 32 class AudioPlayer : public TimeSource { 33 public: 34 enum { 35 REACHED_EOS, 36 SEEK_COMPLETE 37 }; 38 39 enum { 40 ALLOW_DEEP_BUFFERING = 0x01, 41 USE_OFFLOAD = 0x02, 42 HAS_VIDEO = 0x1000, 43 IS_STREAMING = 0x2000 44 45 }; 46 47 AudioPlayer(const sp<MediaPlayerBase::AudioSink> &audioSink, 48 uint32_t flags = 0, 49 AwesomePlayer *audioObserver = NULL); 50 51 virtual ~AudioPlayer(); 52 53 // Caller retains ownership of "source". 54 void setSource(const sp<MediaSource> &source); 55 56 // Return time in us. 57 virtual int64_t getRealTimeUs(); 58 59 status_t start(bool sourceAlreadyStarted = false); 60 61 void pause(bool playPendingSamples = false); 62 status_t resume(); 63 64 // Returns the timestamp of the last buffer played (in us). 65 int64_t getMediaTimeUs(); 66 67 // Returns true iff a mapping is established, i.e. the AudioPlayer 68 // has played at least one frame of audio. 69 bool getMediaTimeMapping(int64_t *realtime_us, int64_t *mediatime_us); 70 71 status_t seekTo(int64_t time_us); 72 73 bool isSeeking(); 74 bool reachedEOS(status_t *finalStatus); 75 76 status_t setPlaybackRatePermille(int32_t ratePermille); 77 78 void notifyAudioEOS(); 79 80 private: 81 friend class VideoEditorAudioPlayer; 82 sp<MediaSource> mSource; 83 sp<AudioTrack> mAudioTrack; 84 85 MediaBuffer *mInputBuffer; 86 87 int mSampleRate; 88 int64_t mLatencyUs; 89 size_t mFrameSize; 90 91 Mutex mLock; 92 int64_t mNumFramesPlayed; 93 int64_t mNumFramesPlayedSysTimeUs; 94 95 int64_t mPositionTimeMediaUs; 96 int64_t mPositionTimeRealUs; 97 98 bool mSeeking; 99 bool mReachedEOS; 100 status_t mFinalStatus; 101 int64_t mSeekTimeUs; 102 103 bool mStarted; 104 105 bool mIsFirstBuffer; 106 status_t mFirstBufferResult; 107 MediaBuffer *mFirstBuffer; 108 109 sp<MediaPlayerBase::AudioSink> mAudioSink; 110 AwesomePlayer *mObserver; 111 int64_t mPinnedTimeUs; 112 113 bool mPlaying; 114 int64_t mStartPosUs; 115 const uint32_t mCreateFlags; 116 117 static void AudioCallback(int event, void *user, void *info); 118 void AudioCallback(int event, void *info); 119 120 static size_t AudioSinkCallback( 121 MediaPlayerBase::AudioSink *audioSink, 122 void *data, size_t size, void *me, 123 MediaPlayerBase::AudioSink::cb_event_t event); 124 125 size_t fillBuffer(void *data, size_t size); 126 127 int64_t getRealTimeUsLocked() const; 128 129 void reset(); 130 131 uint32_t getNumFramesPendingPlayout() const; 132 int64_t getOutputPlayPositionUs_l() const; 133 134 bool allowDeepBuffering() const { return (mCreateFlags & ALLOW_DEEP_BUFFERING) != 0; } 135 bool useOffload() const { return (mCreateFlags & USE_OFFLOAD) != 0; } 136 137 AudioPlayer(const AudioPlayer &); 138 AudioPlayer &operator=(const AudioPlayer &); 139 }; 140 141 } // namespace android 142 143 #endif // AUDIO_PLAYER_H_ 144
