WebMCommon.h

// Copyright (c) 2010 The WebM project authors. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS.  All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.


#ifndef _WEBM_COMMON_H_
#define _WEBM_COMMON_H_ 1
//Here are some common data structs and functions to support them
#if defined(__APPLE_CC__)
#include <QuickTime/QuickTime.h>
#else
#include <QuickTimeComponents.h>

#if defined(TARGET_OS_WIN32)
#define _WINIOCTL_
#error windows
#include <windows.h>
#endif /* TARGET_OS_WIN32 */

#endif /* __APPLE_CC__ */

typedef struct
{
  void *data;
  UInt32 size;
  UInt32 offset;
}WebMBuffer;

enum{
  KEY_FRAME = 0x01,
  VIDEO_FRAME = 0x02,
  AUDIO_FRAME = 0x04,
  ALT_REF_FRAME = 0x08
};

typedef struct
{
  void *data;
  UInt32 size;
  UInt32 offset; //pointer to the end of output buffers data.
  UInt64 timeMs; //time in milliseconds
  UInt16 frameType;  //corresponds to above frame types
  UInt32 indx;
} WebMBufferedFrame;


//these frames should be queued chronologically
typedef struct
{
  WebMBufferedFrame** queue;
  int maxSize;  //the maximum allocated memory
  int size;
} WebMQueuedFrames;


typedef struct
{
  MovieExportGetPropertyUPP propertyProc;
  MovieExportGetDataUPP dataProc;
  void *refCon;
  MovieExportGetDataParams params;
  Boolean eos;
  TimeValue64 time;                    //This time must be based on the source Time scale
  TimeScale timeScale;
  long trackID;
} StreamSource;



void initFrameQueue(WebMQueuedFrames *queue);
WebMBufferedFrame* getFrame(WebMQueuedFrames *queue);
void popFrame(WebMQueuedFrames *queue);
// returns -1 on memory error
int addFrameToQueue(WebMQueuedFrames *queue, void * data,UInt32 size, UInt64 timeMs, UInt16 frameType, UInt32 indx);
int frameQueueSize(WebMQueuedFrames *queue);
int freeFrameQueue(WebMQueuedFrames *queue);

void initMovieGetParams(StreamSource *get);
void dbg_printDataParams(StreamSource *get);
ComponentResult initStreamSource(StreamSource *source,  TimeScale scale,
                                 long trackID, MovieExportGetPropertyUPP propertyProc,
                                 MovieExportGetDataUPP getDataProc, void *refCon);
double getTimeAsSeconds(StreamSource *source);

#endif