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libavcodec/parser.h

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00001 /*
00002  * AVCodecParser prototypes and definitions
00003  * Copyright (c) 2003 Fabrice Bellard
00004  * Copyright (c) 2003 Michael Niedermayer
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 #ifndef AVCODEC_PARSER_H
00024 #define AVCODEC_PARSER_H
00025 
00026 #include "avcodec.h"
00027 
00028 typedef struct ParseContext{
00029     uint8_t *buffer;
00030     int index;
00031     int last_index;
00032     unsigned int buffer_size;
00033     uint32_t state;             
00034     int frame_start_found;
00035     int overread;               
00036     int overread_index;         
00037     uint64_t state64;           
00038 } ParseContext;
00039 
00040 struct MpegEncContext;
00041 
00042 typedef struct ParseContext1{
00043     ParseContext pc;
00044 /* XXX/FIXME PC1 vs. PC */
00045     /* MPEG-2-specific */
00046     AVRational frame_rate;
00047     int progressive_sequence;
00048     int width, height;
00049 
00050     /* XXX: suppress that, needed by MPEG-4 */
00051     struct MpegEncContext *enc;
00052     int first_picture;
00053 } ParseContext1;
00054 
00055 #define END_NOT_FOUND (-100)
00056 
00057 int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
00058 int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
00059                         int buf_size);
00060 void ff_parse_close(AVCodecParserContext *s);
00061 void ff_parse1_close(AVCodecParserContext *s);
00062 
00068 void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
00069 
00070 #endif /* AVCODEC_PARSER_H */

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