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      1 /*
      2  * Copyright (C) 2011 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 VE_AUDIO_PLAYER_H_
     18 
     19 #define VE_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 #include "M4xVSS_API.h"
     26 #include "VideoEditorMain.h"
     27 #include "M4OSA_FileReader.h"
     28 #include "VideoEditorBGAudioProcessing.h"
     29 #include "AudioPlayerBase.h"
     30 #include "PreviewPlayerBase.h"
     31 
     32 namespace android {
     33 
     34 class MediaSource;
     35 class AudioTrack;
     36 class PreviewPlayer;
     37 
     38 
     39 class VideoEditorAudioPlayer : public AudioPlayerBase {
     40 public:
     41     enum {
     42         REACHED_EOS,
     43         SEEK_COMPLETE
     44     };
     45 
     46     VideoEditorAudioPlayer(const sp<MediaPlayerBase::AudioSink> &audioSink,
     47         PreviewPlayerBase *audioObserver = NULL);
     48 
     49     virtual ~VideoEditorAudioPlayer();
     50 
     51     status_t start(bool sourceAlreadyStarted = false);
     52     void resume();
     53 
     54     void setAudioMixSettings(M4xVSS_AudioMixingSettings* pAudioMixSettings);
     55     void setAudioMixPCMFileHandle(M4OSA_Context pBGAudioPCMFileHandle);
     56     void setAudioMixStoryBoardSkimTimeStamp(
     57         M4OSA_UInt32 pBGAudioStoryBoardSkimTimeStamp,
     58         M4OSA_UInt32 pBGAudioCurrentMediaBeginCutTS,
     59         M4OSA_UInt32 pBGAudioCurrentMediaVolumeVal);
     60 
     61     void setObserver(PreviewPlayerBase *observer);
     62     void setSource(const sp<MediaSource> &source);
     63     sp<MediaSource> getSource();
     64 
     65     bool isStarted();
     66 private:
     67 
     68     M4xVSS_AudioMixingSettings *mAudioMixSettings;
     69     VideoEditorBGAudioProcessing *mAudioProcess;
     70 
     71     M4OSA_Context mBGAudioPCMFileHandle;
     72     int64_t mBGAudioPCMFileLength;
     73     int64_t mBGAudioPCMFileTrimmedLength;
     74     int64_t mBGAudioPCMFileDuration;
     75     int64_t mBGAudioPCMFileSeekPoint;
     76     int64_t mBGAudioPCMFileOriginalSeekPoint;
     77     int64_t mBGAudioStoryBoardSkimTimeStamp;
     78     int64_t mBGAudioStoryBoardCurrentMediaBeginCutTS;
     79     int64_t mBGAudioStoryBoardCurrentMediaVolumeVal;
     80 
     81     size_t fillBuffer(void *data, size_t size);
     82 
     83     void reset();
     84     void setPrimaryTrackVolume(M4OSA_Int16 *data, M4OSA_UInt32 size, M4OSA_Float volLevel);
     85 
     86     static size_t AudioSinkCallback(
     87             MediaPlayerBase::AudioSink *audioSink,
     88             void *data, size_t size, void *me);
     89 
     90     VideoEditorAudioPlayer(const VideoEditorAudioPlayer &);
     91     VideoEditorAudioPlayer &operator=(const VideoEditorAudioPlayer &);
     92 };
     93 
     94 }  // namespace android
     95 
     96 #endif  // VE_AUDIO_PLAYER_H_
     97