| /* |
| * 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" |
| |
| 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 |
| uint64_t state64; ///< contains the last 8 bytes in MSB order |
| } 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 /* AVCODEC_PARSER_H */ |