mirror of
https://github.com/FFmpeg/FFmpeg.git
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73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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* MPEG1/2 muxer and demuxer common defines
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef FFMPEG_MPEG_H
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#define FFMPEG_MPEG_H
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#include <stdint.h>
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#include "libavutil/intreadwrite.h"
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#define PACK_START_CODE ((unsigned int)0x000001ba)
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#define SYSTEM_HEADER_START_CODE ((unsigned int)0x000001bb)
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#define SEQUENCE_END_CODE ((unsigned int)0x000001b7)
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#define PACKET_START_CODE_MASK ((unsigned int)0xffffff00)
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#define PACKET_START_CODE_PREFIX ((unsigned int)0x00000100)
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#define ISO_11172_END_CODE ((unsigned int)0x000001b9)
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/* mpeg2 */
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#define PROGRAM_STREAM_MAP 0x1bc
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#define PRIVATE_STREAM_1 0x1bd
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#define PADDING_STREAM 0x1be
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#define PRIVATE_STREAM_2 0x1bf
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#define AUDIO_ID 0xc0
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#define VIDEO_ID 0xe0
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#define AC3_ID 0x80
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#define DTS_ID 0x8a
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#define LPCM_ID 0xa0
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#define SUB_ID 0x20
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#define STREAM_TYPE_VIDEO_MPEG1 0x01
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#define STREAM_TYPE_VIDEO_MPEG2 0x02
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#define STREAM_TYPE_AUDIO_MPEG1 0x03
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#define STREAM_TYPE_AUDIO_MPEG2 0x04
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#define STREAM_TYPE_PRIVATE_SECTION 0x05
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#define STREAM_TYPE_PRIVATE_DATA 0x06
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#define STREAM_TYPE_AUDIO_AAC 0x0f
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#define STREAM_TYPE_VIDEO_MPEG4 0x10
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#define STREAM_TYPE_VIDEO_H264 0x1b
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#define STREAM_TYPE_AUDIO_AC3 0x81
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#define STREAM_TYPE_AUDIO_DTS 0x8a
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static const int lpcm_freq_tab[4] = { 48000, 96000, 44100, 32000 };
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/**
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* Parse MPEG-PES five-byte timestamp
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*/
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static inline int64_t ff_parse_pes_pts(uint8_t *buf) {
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return (int64_t)(*buf & 0x0e) << 29 |
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(AV_RB16(buf+1) >> 1) << 15 |
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AV_RB16(buf+3) >> 1;
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}
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#endif /* FFMPEG_MPEG_H */
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