/*

  * 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 "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;
     DSPContext dsp;
     AVFrame frames[2];
     AVFrame *last_frame;
     AVFrame *current_frame;

     int first_frame;

     roq_cell cb2x2[256];
     roq_qcell cb4x4[256];

     const unsigned char *buf;

     int size;

     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;

     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 */