refframe.h

Nokia H.264/AVC Encoder/Decoder Usage Manual

/*
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limited license under copyrights owned by Nokia to use the Software for 
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distributing (including the right to make modifications to the Software) 
a fully compliant decoder implementation (hereinafter "Decoder") of 
ITU-T Recommendation H.264 / ISO/IEC International Standard 14496-10 and 
an encoder implementation producing output that is decodable with the 
Decoder.

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*/



#ifndef _REF_FRAME_H_
#define _REF_FRAME_H_


#include "globals.h"
#include "encparams.h"


// the buffer has the extended boundaries, normally the extension is 16 pixels 
// for y, and 8 pixels for u and v
typedef struct _refFrmBuf_s 
{
  int16 picWidth;
  int16 picHeight;
  int16 xExt;           // horizontal extension at one side
  int16 yExt;           // vertical extension at one side

  rectRegion_s searchArea;

  // width and height of the extended buffer
  int16 yBufWidth;
  int16 yBufHeight;
  int16 cBufWidth;
  
  // y is upsampled, so y buffer size is twice as much in each direction,
  // u/v buffer size is half as much in each direction
  u_int8 *yBuf;       // y buffer with extended boundary areas
  u_int8 *uBuf;       // u buffer with extended boundary areas
  u_int8 *vBuf;       // v buffer with extended boundary areas
  u_int8 *y;          // point to the first actual y sample in the buffer
  u_int8 *u;          // point to the first actual u sample in the buffer
  u_int8 *v;          // point to the first actual u sample in the buffer

  u_int16 *seaYBuf;

  u_int16 *partSums;

  int frameNum;         // for a long-term ref, frameNum is "longTermFrmIdx"
  int picNum;           // for a long-term ref pic, picNum is "longTermPicNum"

  int forRef;           // Is this frame is used for reference?
  int forOutput;        // Is this frame is waiting for output?
  int isShortTerm;      // Is this frame used for short-term or long-term ref?

  int *channelDistortion;  // The expected channel distortion of the MBs
} refFrmBuf_s;


void refFrmOpen(refFrmBuf_s *pRefFrm, encParams_s *pEncPar);

void refFrmClose(refFrmBuf_s *pRefFrm, int low_complex_prof3);

void refFrmUpsampleLuma(refFrmBuf_s *pRefFrm, u_int8 *reco, int low_complex_prof3);

void refFrmExtendChroma(refFrmBuf_s *pRefFrm, u_int8 *recoU, u_int8 *recoV);

void refFrmStoreChannelDistortion(refFrmBuf_s *pRefFrm, int *channelDistortion);
#endif // _REF_FRAME_H_