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/* picture type */ 33#define PICT_TOP_FIELD 1 34#define PICT_BOTTOM_FIELD 2 35#define PICT_FRAME 3 36 37/** 38 * Value of Picture.reference when Picture is not a reference picture, but 39 * is held for delayed output. 40 */ 41#define DELAYED_PIC_REF 4 42 43 44/* MB types */ 45#if !FF_API_MB_TYPE 46#define MB_TYPE_INTRA4x4 (1 << 0) 47#define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific 48#define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific 49#define MB_TYPE_16x16 (1 << 3) 50#define MB_TYPE_16x8 (1 << 4) 51#define MB_TYPE_8x16 (1 << 5) 52#define MB_TYPE_8x8 (1 << 6) 53#define MB_TYPE_INTERLACED (1 << 7) 54#define MB_TYPE_DIRECT2 (1 << 8) // FIXME 55#define MB_TYPE_ACPRED (1 << 9) 56#define MB_TYPE_GMC (1 << 10) 57#define MB_TYPE_SKIP (1 << 11) 58#define MB_TYPE_P0L0 (1 << 12) 59#define MB_TYPE_P1L0 (1 << 13) 60#define MB_TYPE_P0L1 (1 << 14) 61#define MB_TYPE_P1L1 (1 << 15) 62#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) 63#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) 64#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) 65#define MB_TYPE_QUANT (1 << 16) 66#define MB_TYPE_CBP (1 << 17) 67#endif 68 69#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type 70 71#define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4) 72#define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16) 73#define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 74#define IS_INTRA(a) ((a) & 7) 75#define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \ 76 MB_TYPE_8x16 | MB_TYPE_8x8)) 77#define IS_SKIP(a) ((a) & MB_TYPE_SKIP) 78#define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM) 79#define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED) 80#define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2) 81#define IS_GMC(a) ((a) & MB_TYPE_GMC) 82#define IS_16X16(a) ((a) & MB_TYPE_16x16) 83#define IS_16X8(a) ((a) & MB_TYPE_16x8) 84#define IS_8X16(a) ((a) & MB_TYPE_8x16) 85#define IS_8X8(a) ((a) & MB_TYPE_8x8) 86#define IS_SUB_8X8(a) ((a) & MB_TYPE_16x16) // note reused 87#define IS_SUB_8X4(a) ((a) & MB_TYPE_16x8) // note reused 88#define IS_SUB_4X8(a) ((a) & MB_TYPE_8x16) // note reused 89#define IS_SUB_4X4(a) ((a) & MB_TYPE_8x8) // note reused 90#define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED) 91#define IS_QUANT(a) ((a) & MB_TYPE_QUANT) 92#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list)))) 93 94// does this mb use listX, note does not work if subMBs 95#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list)))) 96 97#define HAS_CBP(a) ((a) & MB_TYPE_CBP) 98 99/* MB types for encoding */ 100#define CANDIDATE_MB_TYPE_INTRA (1 << 0) 101#define CANDIDATE_MB_TYPE_INTER (1 << 1) 102#define CANDIDATE_MB_TYPE_INTER4V (1 << 2) 103#define CANDIDATE_MB_TYPE_SKIPPED (1 << 3) 104 105#define CANDIDATE_MB_TYPE_DIRECT (1 << 4) 106#define CANDIDATE_MB_TYPE_FORWARD (1 << 5) 107#define CANDIDATE_MB_TYPE_BACKWARD (1 << 6) 108#define CANDIDATE_MB_TYPE_BIDIR (1 << 7) 109 110#define CANDIDATE_MB_TYPE_INTER_I (1 << 8) 111#define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9) 112#define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10) 113#define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11) 114 115#define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12) 116 117 118/** 119 * Draw a horizontal band if supported. 120 * 121 * @param h is the normal height, this will be reduced automatically if needed 122 */ 123void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last, 124 int y, int h, int picture_structure, int first_field, 125 int low_delay); 126 127#endif /* AVCODEC_PICTTYPE_H */ 128