parser.h
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * AVCodecParser prototypes and definitions
- * Copyright (c) 2003 Fabrice Bellard.
- * Copyright (c) 2003 Michael Niedermayer.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #ifndef FFMPEG_PARSER_H
- #define FFMPEG_PARSER_H
- #include "avcodec.h"
- typedef struct ParseContext{
- uint8_t *buffer;
- int index;
- int last_index;
- unsigned int buffer_size;
- uint32_t state; ///< contains the last few bytes in MSB order
- int frame_start_found;
- int overread; ///< the number of bytes which where irreversibly read from the next frame
- int overread_index; ///< the index into ParseContext.buffer of the overread bytes
- } ParseContext;
- struct MpegEncContext;
- typedef struct ParseContext1{
- ParseContext pc;
- /* XXX/FIXME PC1 vs. PC */
- /* MPEG-2-specific */
- AVRational frame_rate;
- int progressive_sequence;
- int width, height;
- /* XXX: suppress that, needed by MPEG-4 */
- struct MpegEncContext *enc;
- int first_picture;
- } ParseContext1;
- #define END_NOT_FOUND (-100)
- int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
- int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
- int buf_size);
- void ff_parse_close(AVCodecParserContext *s);
- void ff_parse1_close(AVCodecParserContext *s);
- /**
- * Fetches timestamps for a specific byte within the current access unit.
- * @param off byte position within the access unit
- * @param remove Found timestamps will be removed if set to 1, kept if set to 0.
- */
- void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
- #endif /* FFMPEG_PARSER_H */