ffmpeg/libavcodec/roqvideo.h

   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     const AVClass *class;
  47     AVCodecContext *avctx;
  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
  74     int quake3_compat; // Quake 3 compatibility option
  75
  76 } RoqContext;
  77
  78 #define RoQ_INFO              0x1001
  79 #define RoQ_QUAD_CODEBOOK     0x1002
  80 #define RoQ_QUAD_VQ           0x1011
  81 #define RoQ_SOUND_MONO        0x1020
  82 #define RoQ_SOUND_STEREO      0x1021
  83
  84 #define RoQ_ID_MOT              0x00
  85 #define RoQ_ID_FCC              0x01
  86 #define RoQ_ID_SLD              0x02
  87 #define RoQ_ID_CCC              0x03
  88
  89 void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell);
  90 void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell);
  91
  92 void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay);
  93
  94 void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay);
  95
  96 #endif /* AVCODEC_ROQVIDEO_H */