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https://gitee.com/openharmony/third_party_ffmpeg
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71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
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* AVCodecParser prototypes and definitions
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* Copyright (c) 2003 Fabrice Bellard
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* Copyright (c) 2003 Michael Niedermayer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_PARSER_H
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#define AVCODEC_PARSER_H
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#include "avcodec.h"
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typedef struct ParseContext{
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uint8_t *buffer;
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int index;
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int last_index;
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unsigned int buffer_size;
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uint32_t state; ///< contains the last few bytes in MSB order
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int frame_start_found;
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int overread; ///< the number of bytes which where irreversibly read from the next frame
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int overread_index; ///< the index into ParseContext.buffer of the overread bytes
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uint64_t state64; ///< contains the last 8 bytes in MSB order
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} ParseContext;
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struct MpegEncContext;
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typedef struct ParseContext1{
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ParseContext pc;
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/* XXX/FIXME PC1 vs. PC */
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/* MPEG-2-specific */
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AVRational frame_rate;
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int progressive_sequence;
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int width, height;
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/* XXX: suppress that, needed by MPEG-4 */
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struct MpegEncContext *enc;
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int first_picture;
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} ParseContext1;
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#define END_NOT_FOUND (-100)
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int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
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int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf,
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int buf_size);
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void ff_parse_close(AVCodecParserContext *s);
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void ff_parse1_close(AVCodecParserContext *s);
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/**
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* Fetches timestamps for a specific byte within the current access unit.
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* @param off byte position within the access unit
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* @param remove Found timestamps will be removed if set to 1, kept if set to 0.
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*/
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void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove);
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#endif /* AVCODEC_PARSER_H */
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