libavcodec/mpegutils.h

   1 /*
   2  * Mpeg video formats-related defines and utility functions
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef AVCODEC_MPEGUTILS_H
  22 #define AVCODEC_MPEGUTILS_H
  23
  24 #include <stdint.h>
  25
  26 #include "libavutil/frame.h"
  27
  28 #include "avcodec.h"
  29
  30 /**
  31  * Return value for header parsers if frame is not coded.
  32  * */
  33 #define FRAME_SKIPPED 100
  34
  35 /* picture type */
  36 #define PICT_TOP_FIELD     1
  37 #define PICT_BOTTOM_FIELD  2
  38 #define PICT_FRAME         3
  39
  40 #define MAX_MB_BYTES    (30 * 16 * 16 * 3 / 8 + 120)
  41 #define MAX_FCODE        7
  42
  43 /* MB types */
  44 #define MB_TYPE_INTRA4x4   (1 <<  0)
  45 #define MB_TYPE_INTRA16x16 (1 <<  1) // FIXME H.264-specific
  46 #define MB_TYPE_INTRA_PCM  (1 <<  2) // FIXME H.264-specific
  47 #define MB_TYPE_16x16      (1 <<  3)
  48 #define MB_TYPE_16x8       (1 <<  4)
  49 #define MB_TYPE_8x16       (1 <<  5)
  50 #define MB_TYPE_8x8        (1 <<  6)
  51 #define MB_TYPE_INTERLACED (1 <<  7)
  52 #define MB_TYPE_DIRECT2    (1 <<  8) // FIXME
  53 #define MB_TYPE_ACPRED     (1 <<  9)
  54 #define MB_TYPE_GMC        (1 << 10)
  55 #define MB_TYPE_SKIP       (1 << 11)
  56 #define MB_TYPE_P0L0       (1 << 12)
  57 #define MB_TYPE_P1L0       (1 << 13)
  58 #define MB_TYPE_P0L1       (1 << 14)
  59 #define MB_TYPE_P1L1       (1 << 15)
  60 #define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
  61 #define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
  62 #define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
  63 #define MB_TYPE_QUANT      (1 << 16)
  64 #define MB_TYPE_CBP        (1 << 17)
  65
  66 #define MB_TYPE_INTRA    MB_TYPE_INTRA4x4 // default mb_type if there is just one type
  67
  68 #define IS_INTRA4x4(a)   ((a) & MB_TYPE_INTRA4x4)
  69 #define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16)
  70 #define IS_PCM(a)        ((a) & MB_TYPE_INTRA_PCM)
  71 #define IS_INTRA(a)      ((a) & 7)
  72 #define IS_INTER(a)      ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \
  73                                  MB_TYPE_8x16  | MB_TYPE_8x8))
  74 #define IS_SKIP(a)       ((a) & MB_TYPE_SKIP)
  75 #define IS_INTRA_PCM(a)  ((a) & MB_TYPE_INTRA_PCM)
  76 #define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED)
  77 #define IS_DIRECT(a)     ((a) & MB_TYPE_DIRECT2)
  78 #define IS_GMC(a)        ((a) & MB_TYPE_GMC)
  79 #define IS_16X16(a)      ((a) & MB_TYPE_16x16)
  80 #define IS_16X8(a)       ((a) & MB_TYPE_16x8)
  81 #define IS_8X16(a)       ((a) & MB_TYPE_8x16)
  82 #define IS_8X8(a)        ((a) & MB_TYPE_8x8)
  83 #define IS_SUB_8X8(a)    ((a) & MB_TYPE_16x16) // note reused
  84 #define IS_SUB_8X4(a)    ((a) & MB_TYPE_16x8)  // note reused
  85 #define IS_SUB_4X8(a)    ((a) & MB_TYPE_8x16)  // note reused
  86 #define IS_SUB_4X4(a)    ((a) & MB_TYPE_8x8)   // note reused
  87 #define IS_ACPRED(a)     ((a) & MB_TYPE_ACPRED)
  88 #define IS_QUANT(a)      ((a) & MB_TYPE_QUANT)
  89 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list))))
  90
  91 // does this mb use listX, note does not work if subMBs
  92 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list))))
  93
  94 #define HAS_CBP(a)       ((a) & MB_TYPE_CBP)
  95
  96 /* MB types for encoding */
  97 #define CANDIDATE_MB_TYPE_INTRA      (1 <<  0)
  98 #define CANDIDATE_MB_TYPE_INTER      (1 <<  1)
  99 #define CANDIDATE_MB_TYPE_INTER4V    (1 <<  2)
 100 #define CANDIDATE_MB_TYPE_SKIPPED    (1 <<  3)
 101
 102 #define CANDIDATE_MB_TYPE_DIRECT     (1 <<  4)
 103 #define CANDIDATE_MB_TYPE_FORWARD    (1 <<  5)
 104 #define CANDIDATE_MB_TYPE_BACKWARD   (1 <<  6)
 105 #define CANDIDATE_MB_TYPE_BIDIR      (1 <<  7)
 106
 107 #define CANDIDATE_MB_TYPE_INTER_I    (1 <<  8)
 108 #define CANDIDATE_MB_TYPE_FORWARD_I  (1 <<  9)
 109 #define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
 110 #define CANDIDATE_MB_TYPE_BIDIR_I    (1 << 11)
 111
 112 #define CANDIDATE_MB_TYPE_DIRECT0    (1 << 12)
 113
 114 #define INPLACE_OFFSET 16
 115
 116 enum OutputFormat {
 117     FMT_MPEG1,
 118     FMT_H261,
 119     FMT_H263,
 120     FMT_MJPEG,
 121     FMT_SPEEDHQ,
 122 };
 123
 124
 125 /**
 126  * Draw a horizontal band if supported.
 127  *
 128  * @param h is the normal height, this will be reduced automatically if needed
 129  */
 130 void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last,
 131                         int y, int h, int picture_structure, int first_field,
 132                         int low_delay);
 133
 134 /**
 135  * Print debugging info for the given picture.
 136  */
 137 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table,
 138                          uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2],
 139                          int mb_width, int mb_height, int mb_stride, int quarter_sample);
 140
 141 #endif /* AVCODEC_MPEGUTILS_H */