FFmpeg/libavcodec/roqvideo.h

/*
 * Copyright (C) 2003 the ffmpeg project
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#include "avcodec.h"
#include "dsputil.h"

typedef struct {
  unsigned char y[4];
  unsigned char u, v;
} roq_cell;

typedef struct {
  int idx[4];
} roq_qcell;

typedef struct RoqContext {

    AVCodecContext *avctx;
    DSPContext dsp;
    AVFrame frames[2];
    AVFrame *last_frame;
    AVFrame *current_frame;
    int y_stride;
    int c_stride;

    roq_cell cells[256];
    roq_qcell qcells[256];

    unsigned char *buf;
    int size;

} RoqContext;

#define RoQ_INFO              0x1001
#define RoQ_QUAD_CODEBOOK     0x1002
#define RoQ_QUAD_VQ           0x1011
#define RoQ_SOUND_MONO        0x1020
#define RoQ_SOUND_STEREO      0x1021

#define RoQ_ID_MOT              0x00
#define RoQ_ID_FCC              0x01
#define RoQ_ID_SLD              0x02
#define RoQ_ID_CCC              0x03

void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell);
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell);

void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay);

void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay);