yading@10: /*
yading@10:  * AVCodecParser prototypes and definitions
yading@10:  * Copyright (c) 2003 Fabrice Bellard
yading@10:  * Copyright (c) 2003 Michael Niedermayer
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_PARSER_H
yading@10: #define AVCODEC_PARSER_H
yading@10: 
yading@10: #include "avcodec.h"
yading@10: 
yading@10: typedef struct ParseContext{
yading@10:     uint8_t *buffer;
yading@10:     int index;
yading@10:     int last_index;
yading@10:     unsigned int buffer_size;
yading@10:     uint32_t state;             ///< contains the last few bytes in MSB order
yading@10:     int frame_start_found;
yading@10:     int overread;               ///< the number of bytes which where irreversibly read from the next frame
yading@10:     int overread_index;         ///< the index into ParseContext.buffer of the overread bytes
yading@10:     uint64_t state64;           ///< contains the last 8 bytes in MSB order
yading@10: } ParseContext;
yading@10: 
yading@10: #define END_NOT_FOUND (-100)
yading@10: 
yading@10: /**
yading@10:  * Combine the (truncated) bitstream to a complete frame.
yading@10:  * @return -1 if no complete frame could be created,
yading@10:  *         AVERROR(ENOMEM) if there was a memory allocation error
yading@10:  */
yading@10: int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
yading@10: int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
yading@10:                         int buf_size);
yading@10: void ff_parse_close(AVCodecParserContext *s);
yading@10: 
yading@10: /**
yading@10:  * Fetch timestamps for a specific byte within the current access unit.
yading@10:  * @param off byte position within the access unit
yading@10:  * @param remove Found timestamps will be removed if set to 1, kept if set to 0.
yading@10:  */
yading@10: void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
yading@10: 
yading@10: #endif /* AVCODEC_PARSER_H */