Globally rename the header inclusion guard names.
[libav.git] / libavcodec / parser.h
1 /*
2 * AVCodecParser prototypes and definitions
3 * Copyright (c) 2003 Fabrice Bellard.
4 * Copyright (c) 2003 Michael Niedermayer.
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #ifndef AVCODEC_PARSER_H
24 #define AVCODEC_PARSER_H
25
26 #include "avcodec.h"
27
28 typedef struct ParseContext{
29 uint8_t *buffer;
30 int index;
31 int last_index;
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 } ParseContext;
38
39 struct MpegEncContext;
40
41 typedef struct ParseContext1{
42 ParseContext pc;
43 /* XXX/FIXME PC1 vs. PC */
44 /* MPEG-2-specific */
45 AVRational frame_rate;
46 int progressive_sequence;
47 int width, height;
48
49 /* XXX: suppress that, needed by MPEG-4 */
50 struct MpegEncContext *enc;
51 int first_picture;
52 } ParseContext1;
53
54 #define END_NOT_FOUND (-100)
55
56 int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
57 int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
58 int buf_size);
59 void ff_parse_close(AVCodecParserContext *s);
60 void ff_parse1_close(AVCodecParserContext *s);
61
62 /**
63 * Fetches timestamps for a specific byte within the current access unit.
64 * @param off byte position within the access unit
65 * @param remove Found timestamps will be removed if set to 1, kept if set to 0.
66 */
67 void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
68
69 #endif /* AVCODEC_PARSER_H */