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  1. /*
  2.  * Copyright (C) 2003 Mike Melanson
  3.  * Copyright (C) 2003 Dr. Tim Ferguson
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with FFmpeg; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  */
  21.  
  22. #ifndef AVCODEC_ROQVIDEO_H
  23. #define AVCODEC_ROQVIDEO_H
  24.  
  25. #include "libavutil/lfg.h"
  26. #include "avcodec.h"
  27. #include "bytestream.h"
  28.  
  29. typedef struct roq_cell {
  30.     unsigned char y[4];
  31.     unsigned char u, v;
  32. } roq_cell;
  33.  
  34. typedef struct roq_qcell {
  35.     int idx[4];
  36. } roq_qcell;
  37.  
  38. typedef struct motion_vect {
  39.     int d[2];
  40. } motion_vect;
  41.  
  42. struct RoqTempData;
  43.  
  44. typedef struct RoqContext {
  45.  
  46.     AVCodecContext *avctx;
  47.     AVFrame frames[2];
  48.     AVFrame *last_frame;
  49.     AVFrame *current_frame;
  50.     int first_frame;
  51.  
  52.     roq_cell cb2x2[256];
  53.     roq_qcell cb4x4[256];
  54.  
  55.     GetByteContext gb;
  56.     int width, height;
  57.  
  58.     /* Encoder only data */
  59.     AVLFG randctx;
  60.     uint64_t lambda;
  61.  
  62.     motion_vect *this_motion4;
  63.     motion_vect *last_motion4;
  64.  
  65.     motion_vect *this_motion8;
  66.     motion_vect *last_motion8;
  67.  
  68.     unsigned int framesSinceKeyframe;
  69.  
  70.     const AVFrame *frame_to_enc;
  71.     uint8_t *out_buf;
  72.     struct RoqTempData *tmpData;
  73. } RoqContext;
  74.  
  75. #define RoQ_INFO              0x1001
  76. #define RoQ_QUAD_CODEBOOK     0x1002
  77. #define RoQ_QUAD_VQ           0x1011
  78. #define RoQ_SOUND_MONO        0x1020
  79. #define RoQ_SOUND_STEREO      0x1021
  80.  
  81. #define RoQ_ID_MOT              0x00
  82. #define RoQ_ID_FCC              0x01
  83. #define RoQ_ID_SLD              0x02
  84. #define RoQ_ID_CCC              0x03
  85.  
  86. void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell);
  87. void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell);
  88.  
  89. void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay);
  90.  
  91. void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay);
  92.  
  93. #endif /* AVCODEC_ROQVIDEO_H */
  94.