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/MediaSource.h> 22 #include <media/MediaPlayerInterface.h> 23 #include <media/stagefright/MediaBuffer.h> 24 #include <utils/threads.h> 25 26 namespace android { 27 28 struct AudioPlaybackRate; 29 class AudioTrack; 30 struct AwesomePlayer; 31 32 class AudioPlayer { 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 50 virtual ~AudioPlayer(); 51 52 // Caller retains ownership of "source". 53 void setSource(const sp<MediaSource> &source); 54 55 status_t start(bool sourceAlreadyStarted = false); 56 57 void pause(bool playPendingSamples = false); 58 status_t resume(); 59 60 status_t seekTo(int64_t time_us); 61 62 bool isSeeking(); 63 bool reachedEOS(status_t *finalStatus); 64 65 status_t setPlaybackRate(const AudioPlaybackRate &rate); 66 status_t getPlaybackRate(AudioPlaybackRate *rate /* nonnull */); 67 68 private: 69 sp<MediaSource> mSource; 70 sp<AudioTrack> mAudioTrack; 71 72 MediaBufferBase *mInputBuffer; 73 74 int mSampleRate; 75 int64_t mLatencyUs; 76 size_t mFrameSize; 77 78 Mutex mLock; 79 int64_t mNumFramesPlayed; 80 int64_t mNumFramesPlayedSysTimeUs; 81 82 int64_t mPositionTimeMediaUs; 83 int64_t mPositionTimeRealUs; 84 85 bool mSeeking; 86 bool mReachedEOS; 87 status_t mFinalStatus; 88 int64_t mSeekTimeUs; 89 90 bool mStarted; 91 92 bool mIsFirstBuffer; 93 status_t mFirstBufferResult; 94 MediaBufferBase *mFirstBuffer; 95 96 sp<MediaPlayerBase::AudioSink> mAudioSink; 97 98 bool mPlaying; 99 int64_t mStartPosUs; 100 const uint32_t mCreateFlags; 101 102 static void AudioCallback(int event, void *user, void *info); 103 void AudioCallback(int event, void *info); 104 105 static size_t AudioSinkCallback( 106 MediaPlayerBase::AudioSink *audioSink, 107 void *data, size_t size, void *me, 108 MediaPlayerBase::AudioSink::cb_event_t event); 109 110 size_t fillBuffer(void *data, size_t size); 111 112 void reset(); 113 114 int64_t getOutputPlayPositionUs_l(); 115 allowDeepBuffering()116 bool allowDeepBuffering() const { return (mCreateFlags & ALLOW_DEEP_BUFFERING) != 0; } useOffload()117 bool useOffload() const { return (mCreateFlags & USE_OFFLOAD) != 0; } 118 119 AudioPlayer(const AudioPlayer &); 120 AudioPlayer &operator=(const AudioPlayer &); 121 }; 122 123 } // namespace android 124 125 #endif // AUDIO_PLAYER_H_ 126