mpegutils.h (4382B)
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 /* picture type */ 31 #define PICT_TOP_FIELD 1 32 #define PICT_BOTTOM_FIELD 2 33 #define PICT_FRAME 3 34 35 #define MAX_MB_BYTES (30 * 16 * 16 * 3 / 8 + 120) 36 #define MAX_FCODE 7 37 38 /* MB types */ 39 #define MB_TYPE_INTRA4x4 (1 << 0) 40 #define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific 41 #define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific 42 #define MB_TYPE_16x16 (1 << 3) 43 #define MB_TYPE_16x8 (1 << 4) 44 #define MB_TYPE_8x16 (1 << 5) 45 #define MB_TYPE_8x8 (1 << 6) 46 #define MB_TYPE_INTERLACED (1 << 7) 47 #define MB_TYPE_DIRECT2 (1 << 8) // FIXME 48 #define MB_TYPE_CBP (1 << 10) 49 #define MB_TYPE_QUANT (1 << 11) 50 #define MB_TYPE_FORWARD_MV (1 << 12) 51 #define MB_TYPE_BACKWARD_MV (1 << 13) 52 #define MB_TYPE_BIDIR_MV (MB_TYPE_FORWARD_MV | MB_TYPE_BACKWARD_MV) 53 // MB_TYPE_P[01]L[01], MB_TYPE_L[01] and MB_TYPE_L0L1 are H.264 only. 54 #define MB_TYPE_P0L0 (1 << 12) 55 #define MB_TYPE_P1L0 (1 << 13) 56 #define MB_TYPE_P0L1 (1 << 14) 57 #define MB_TYPE_P1L1 (1 << 15) 58 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) 59 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) 60 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) 61 #define MB_TYPE_GMC (1 << 16) 62 #define MB_TYPE_SKIP (1 << 17) 63 #define MB_TYPE_ACPRED (1 << 18) 64 65 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type 66 67 // The following MB-type can be used by each codec as it sees fit. 68 #define MB_TYPE_CODEC_SPECIFIC (1 << 9) 69 70 #define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4) 71 #define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16) 72 #define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 73 #define IS_INTRA(a) ((a) & 7) 74 #define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \ 75 MB_TYPE_8x16 | MB_TYPE_8x8)) 76 #define IS_SKIP(a) ((a) & MB_TYPE_SKIP) 77 #define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 78 #define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED) 79 #define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2) 80 #define IS_GMC(a) ((a) & MB_TYPE_GMC) 81 #define IS_16X16(a) ((a) & MB_TYPE_16x16) 82 #define IS_16X8(a) ((a) & MB_TYPE_16x8) 83 #define IS_8X16(a) ((a) & MB_TYPE_8x16) 84 #define IS_8X8(a) ((a) & MB_TYPE_8x8) 85 #define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED) 86 #define IS_QUANT(a) ((a) & MB_TYPE_QUANT) 87 88 #define HAS_CBP(a) ((a) & MB_TYPE_CBP) 89 #define HAS_FORWARD_MV(a) ((a) & MB_TYPE_FORWARD_MV) 90 #define HAS_BACKWARD_MV(a) ((a) & MB_TYPE_BACKWARD_MV) 91 // dir == 0 means forward, dir == 1 is backward 92 #define HAS_MV(a, dir) ((a) & (MB_TYPE_FORWARD_MV << (dir))) 93 94 #define MB_TYPE_MV_2_MV_DIR(a) (((a) >> 12) & (MV_DIR_FORWARD | MV_DIR_BACKWARD)) 95 96 /** 97 * Draw a horizontal band if supported. 98 * 99 * @param h is the normal height, this will be reduced automatically if needed 100 */ 101 void ff_draw_horiz_band(AVCodecContext *avctx, const AVFrame *cur, const AVFrame *last, 102 int y, int h, int picture_structure, int first_field, 103 int low_delay); 104 105 /** 106 * Print debugging info for the given picture. 107 */ 108 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, 109 const uint32_t *mbtype_table, 110 const int8_t *qscale_table, int16_t (*const motion_val[2])[2], 111 int mb_width, int mb_height, int mb_stride, int quarter_sample); 112 113 #endif /* AVCODEC_MPEGUTILS_H */