2 * AVCodecParser prototypes and definitions
3 * Copyright (c) 2003 Fabrice Bellard
4 * Copyright (c) 2003 Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #ifndef AVCODEC_PARSER_H
24 #define AVCODEC_PARSER_H
28 typedef struct ParseContext{
32 unsigned int buffer_size;
33 uint32_t state; ///< contains the last few bytes in MSB order
34 int frame_start_found;
35 int overread; ///< the number of bytes which where irreversibly read from the next frame
36 int overread_index; ///< the index into ParseContext.buffer of the overread bytes
37 uint64_t state64; ///< contains the last 8 bytes in MSB order
40 struct MpegEncContext;
42 #define END_NOT_FOUND (-100)
44 int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
45 int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
47 void ff_parse_close(AVCodecParserContext *s);
50 * Fetch timestamps for a specific byte within the current access unit.
51 * @param off byte position within the access unit
52 * @param remove Found timestamps will be removed if set to 1, kept if set to 0.
54 void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
56 #endif /* AVCODEC_PARSER_H */