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 #include "version.h" 30 31 /** 32 * Return value for header parsers if frame is not coded. 33 * */ 34 #define FRAME_SKIPPED 100 35 36 /* picture type */ 37 #define PICT_TOP_FIELD 1 38 #define PICT_BOTTOM_FIELD 2 39 #define PICT_FRAME 3 40 41 /** 42 * Value of Picture.reference when Picture is not a reference picture, but 43 * is held for delayed output. 44 */ 45 #define DELAYED_PIC_REF 4 46 47 #define MAX_MB_BYTES (30 * 16 * 16 * 3 / 8 + 120) 48 #define MAX_FCODE 7 49 50 /* MB types */ 51 #define MB_TYPE_INTRA4x4 (1 << 0) 52 #define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific 53 #define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific 54 #define MB_TYPE_16x16 (1 << 3) 55 #define MB_TYPE_16x8 (1 << 4) 56 #define MB_TYPE_8x16 (1 << 5) 57 #define MB_TYPE_8x8 (1 << 6) 58 #define MB_TYPE_INTERLACED (1 << 7) 59 #define MB_TYPE_DIRECT2 (1 << 8) // FIXME 60 #define MB_TYPE_ACPRED (1 << 9) 61 #define MB_TYPE_GMC (1 << 10) 62 #define MB_TYPE_SKIP (1 << 11) 63 #define MB_TYPE_P0L0 (1 << 12) 64 #define MB_TYPE_P1L0 (1 << 13) 65 #define MB_TYPE_P0L1 (1 << 14) 66 #define MB_TYPE_P1L1 (1 << 15) 67 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) 68 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) 69 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) 70 #define MB_TYPE_QUANT (1 << 16) 71 #define MB_TYPE_CBP (1 << 17) 72 73 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type 74 75 #define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4) 76 #define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16) 77 #define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 78 #define IS_INTRA(a) ((a) & 7) 79 #define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \ 80 MB_TYPE_8x16 | MB_TYPE_8x8)) 81 #define IS_SKIP(a) ((a) & MB_TYPE_SKIP) 82 #define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 83 #define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED) 84 #define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2) 85 #define IS_GMC(a) ((a) & MB_TYPE_GMC) 86 #define IS_16X16(a) ((a) & MB_TYPE_16x16) 87 #define IS_16X8(a) ((a) & MB_TYPE_16x8) 88 #define IS_8X16(a) ((a) & MB_TYPE_8x16) 89 #define IS_8X8(a) ((a) & MB_TYPE_8x8) 90 #define IS_SUB_8X8(a) ((a) & MB_TYPE_16x16) // note reused 91 #define IS_SUB_8X4(a) ((a) & MB_TYPE_16x8) // note reused 92 #define IS_SUB_4X8(a) ((a) & MB_TYPE_8x16) // note reused 93 #define IS_SUB_4X4(a) ((a) & MB_TYPE_8x8) // note reused 94 #define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED) 95 #define IS_QUANT(a) ((a) & MB_TYPE_QUANT) 96 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list)))) 97 98 // does this mb use listX, note does not work if subMBs 99 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list)))) 100 101 #define HAS_CBP(a) ((a) & MB_TYPE_CBP) 102 103 /* MB types for encoding */ 104 #define CANDIDATE_MB_TYPE_INTRA (1 << 0) 105 #define CANDIDATE_MB_TYPE_INTER (1 << 1) 106 #define CANDIDATE_MB_TYPE_INTER4V (1 << 2) 107 #define CANDIDATE_MB_TYPE_SKIPPED (1 << 3) 108 109 #define CANDIDATE_MB_TYPE_DIRECT (1 << 4) 110 #define CANDIDATE_MB_TYPE_FORWARD (1 << 5) 111 #define CANDIDATE_MB_TYPE_BACKWARD (1 << 6) 112 #define CANDIDATE_MB_TYPE_BIDIR (1 << 7) 113 114 #define CANDIDATE_MB_TYPE_INTER_I (1 << 8) 115 #define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9) 116 #define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10) 117 #define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11) 118 119 #define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12) 120 121 #define INPLACE_OFFSET 16 122 123 enum OutputFormat { 124 FMT_MPEG1, 125 FMT_H261, 126 FMT_H263, 127 FMT_MJPEG, 128 FMT_SPEEDHQ, 129 }; 130 131 132 /** 133 * Draw a horizontal band if supported. 134 * 135 * @param h is the normal height, this will be reduced automatically if needed 136 */ 137 void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last, 138 int y, int h, int picture_structure, int first_field, 139 int low_delay); 140 141 /** 142 * Print debugging info for the given picture. 143 */ 144 void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, 145 uint32_t *mbtype_table, int8_t *qscale_table, int16_t (*motion_val[2])[2], 146 int *low_delay, 147 int mb_width, int mb_height, int mb_stride, int quarter_sample); 148 149 #endif /* AVCODEC_MPEGUTILS_H */ 150