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72 lines
2.3 KiB
72 lines
2.3 KiB
/* |
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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 Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 AVFORMAT_MPEG_H |
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#define AVFORMAT_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(const 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 /* AVFORMAT_MPEG_H */
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