1/* 2 * MPEG-1/2 common code 3 * Copyright (c) 2007 Aurelien Jacobs <aurel@gnuage.org> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#ifndef AVCODEC_MPEG12_H 23#define AVCODEC_MPEG12_H 24 25#include "mpegvideo.h" 26 27/* Start codes. */ 28#define SEQ_END_CODE 0x000001b7 29#define SEQ_START_CODE 0x000001b3 30#define GOP_START_CODE 0x000001b8 31#define PICTURE_START_CODE 0x00000100 32#define SLICE_MIN_START_CODE 0x00000101 33#define SLICE_MAX_START_CODE 0x000001af 34#define EXT_START_CODE 0x000001b5 35#define USER_START_CODE 0x000001b2 36 37void ff_mpeg12_common_init(MpegEncContext *s); 38 39void ff_mpeg1_clean_buffers(MpegEncContext *s); 40#if FF_API_FLAG_TRUNCATED 41int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s); 42#endif 43 44void ff_mpeg12_find_best_frame_rate(AVRational frame_rate, 45 int *code, int *ext_n, int *ext_d, 46 int nonstandard); 47 48#endif /* AVCODEC_MPEG12_H */ 49