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 116enum 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 */ 130void 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 */ 137void 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