FFmpeg
mpeg12.h
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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 
38 
40 #if FF_API_FLAG_TRUNCATED
41 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
42 #endif
43 
45  int *code, int *ext_n, int *ext_d,
46  int nonstandard);
47 
48 #endif /* AVCODEC_MPEG12_H */
mpegvideo.h
ff_mpeg1_clean_buffers
void ff_mpeg1_clean_buffers(MpegEncContext *s)
Definition: mpeg12.c:111
ff_mpeg12_find_best_frame_rate
void ff_mpeg12_find_best_frame_rate(AVRational frame_rate, int *code, int *ext_n, int *ext_d, int nonstandard)
Definition: mpeg12framerate.c:44
ParseContext
Definition: parser.h:28
s
#define s(width, name)
Definition: cbs_vp9.c:256
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
ff_mpeg12_common_init
void ff_mpeg12_common_init(MpegEncContext *s)
Definition: mpeg12.c:103
code
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
Definition: filter_design.txt:178
AVCodecParserContext
Definition: avcodec.h:2800
ff_mpeg1_find_frame_end
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s)
Find the end of the current frame in the bitstream.
Definition: mpeg12.c:173
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:62