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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"
#include "dsputil.h"

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

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

typedef struct {
    int d[2];
} motion_vect;

struct RoqTempData;

typedef struct RoqContext {

    AVCodecContext *avctx;
    AVFrame frames[2];
    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;
} 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 */
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