/* * 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 AVCODEC_PARSER_H #define AVCODEC_PARSER_H
#include"avcodec.h"
typedefstruct ParseContext{
uint8_t *buffer; int index; int last_index; unsignedint 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
uint64_t state64; ///< contains the last 8 bytes in MSB order
} ParseContext;
#define END_NOT_FOUND (-100)
/** * Combine the (truncated) bitstream to a complete frame. * @return -1 if no complete frame could be created, * AVERROR(ENOMEM) if there was a memory allocation error
*/ int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size); void ff_parse_close(AVCodecParserContext *s);
/** * Fetch 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. * @param fuzzy Only use found value if it is more informative than what we already have
*/ void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove, int fuzzy);
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