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diff --git a/mpeglib/lib/output/avSyncer.h b/mpeglib/lib/output/avSyncer.h
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+++ b/mpeglib/lib/output/avSyncer.h
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+/*
+  encapsulates the syncing methods, to use it in other classes
+  Copyright (C) 1999  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+
+#ifndef __AVSYNCER_H
+#define __AVSYNCER_H
+
+#include <stdlib.h>
+
+#include "../util/render/yuvPicture.h"
+#include "../util/syncClock.h"
+#include "audioTime.h"
+
+class Performance;
+class AudioDataArray;
+class AudioData;
+
+class AVSyncer {
+
+  AudioData* audioDataInsert;
+  AudioData* audioDataCurrent;
+  AudioDataArray* audioDataArray;
+  Performance* performance;
+
+  AudioTime* audioTime;
+  int onePicFrameInAudioBytes;
+  int oneFrameTime;
+
+  int lAudioRunning;
+
+  abs_thread_mutex_t writeInMut;
+  abs_thread_mutex_t changeMut;
+
+
+  int bufferSize;
+
+  TimeStamp* startAudio;
+  TimeStamp* endAudio;
+  
+  TimeStamp* videoTimeStamp;
+  TimeStamp* diffTime;
+  TimeStamp* waitTime;
+
+  int lPerformance;
+  int lavSync;
+  int lastAudioPacket;
+  double pts_jitter;
+
+
+ public:
+  AVSyncer(int bufferSize);
+  ~AVSyncer();
+
+  // audio
+  int audioSetup(int frequency,int stereo,int sign,int big,int sixteen);
+  int audioPlay(TimeStamp* startStamp,
+		TimeStamp* endStamp,char *buffer, int size);
+  void audioClose(void);
+  void setAudioBufferSize(int size);
+
+  int getPreferredDeliverSize();
+
+  // video
+  int getFrameusec();
+  int syncPicture(YUVPicture* syncPic);
+
+  void config(const char* key,const char* value,void* user_data);
+
+
+
+ private:
+  int getAudioRunning();
+  void setAudioRunning(int lAudioRunning);
+
+  void lockSyncData();
+  void unlockSyncData();
+  void setAudioSync(AudioData* audioData);
+ 
+   // methods which belong not to the OutputStream interface
+  int avSync(TimeStamp* startVideoStamp,
+	     TimeStamp* waitTime,
+	     TimeStamp* earlyTime,
+	     float picPerSec);
+
+};
+#endif