fame_decoder_mpeg.h

一个很好用的MPEG1/4的开源编码器

/*
    libfame - Fast Assembly MPEG Encoder Library
    Copyright (C) 2000-2001 Vivien Chappelier

    This library 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; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __FAME_DECODER_MPEG_H
#define __FAME_DECODER_MPEG_H

#include "fame.h"
#include "fame_decoder.h"

typedef struct _fame_decoder_mpeg_t_ {
  FAME_EXTENDS(fame_decoder_t);
  dct_t yidqmatrixes[32][64];           /* Y intra dequantisation matrixes */
  dct_t cidqmatrixes[32][64];           /* C intra dequantisation matrixes */
  dct_t nidqmatrixes[32][64];           /* non-intra dequantisation matrixes */
  dct_t psmatrix[64];                   /* prescale matrix                   */
  dct_t tmpblock[64];                     /* temporary block                 */
  short blocks[6][64];                    /* DCT, quantised blocks           */
  int width;                              /* width of frames                 */
  int height;                             /* height of frames                */
  fame_yuv_t *input;                      /* input frame                     */
  fame_yuv_t **past_ref;                  /* past reference frame            */
  fame_yuv_t **new_ref;                   /* reconstructed reference frame   */
  fame_yuv_t **future_ref;                /* future reference frame          */
  unsigned char *shape;                   /* shape mask                      */
  unsigned char *padded;                  /* buffer for shape padding        */
  fame_mismatch_t mismatch;               /* mismatch type for dequantisation*/
  dct_t *mismatch_accumulator[6];         /* mismatch accumulator for each block */
  int rounding;
} fame_decoder_mpeg_t;

#define FAME_DECODER_MPEG(x) ((fame_decoder_mpeg_t *) x)

extern FAME_CONSTRUCTOR(fame_decoder_mpeg_t);

#endif