roqvideo.h

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/*
 * Copyright (C) 2003 Mike Melanson
 * Copyright (C) 2003 Dr. Tim Ferguson
 *
 * 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
 */
 
#ifndef AVCODEC_ROQVIDEO_H
#define AVCODEC_ROQVIDEO_H
 
#include "libavutil/lfg.h"
#include "avcodec.h"
#include "bytestream.h"
 
typedef struct roq_cell {
    unsigned char y[4];
    unsigned char u, v;
} roq_cell;
 
typedef struct roq_qcell {
    int idx[4];
} roq_qcell;
 
typedef struct motion_vect {
    int d[2];
} motion_vect;
 
struct RoqTempData;
 
typedef struct RoqContext {
 
    const AVClass *class;
    AVCodecContext *avctx;
    AVFrame *last_frame;
    AVFrame *current_frame;
    int first_frame;
 
    roq_cell cb2x2[256];
    roq_qcell cb4x4[256];
 
    GetByteContext gb;
    int width, height;
 
    /* Encoder only data */
    AVLFG randctx;
    uint64_t lambda;
 
    motion_vect *this_motion4;
    motion_vect *last_motion4;
 
    motion_vect *this_motion8;
    motion_vect *last_motion8;
 
    unsigned int framesSinceKeyframe;
 
    const AVFrame *frame_to_enc;
    uint8_t *out_buf;
    struct RoqTempData *tmpData;
 
    int quake3_compat; // Quake 3 compatibility option
 
} 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);
 
#endif /* AVCODEC_ROQVIDEO_H */