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 */ 142