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| | |
| | | /* |
| | | * 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 |
| | | */ |
| | | |
| | | /** |
| | | * @file |
| | | * A public API for Vorbis parsing |
| | | * |
| | | * Determines the duration for each packet. |
| | | */ |
| | | |
| | | #ifndef AVCODEC_VORBIS_PARSER_H |
| | | #define AVCODEC_VORBIS_PARSER_H |
| | | |
| | | #include <stdint.h> |
| | | |
| | | typedef struct AVVorbisParseContext AVVorbisParseContext; |
| | | |
| | | /** |
| | | * Allocate and initialize the Vorbis parser using headers in the extradata. |
| | | */ |
| | | AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata, |
| | | int extradata_size); |
| | | |
| | | /** |
| | | * Free the parser and everything associated with it. |
| | | */ |
| | | void av_vorbis_parse_free(AVVorbisParseContext **s); |
| | | |
| | | #define VORBIS_FLAG_HEADER 0x00000001 |
| | | #define VORBIS_FLAG_COMMENT 0x00000002 |
| | | #define VORBIS_FLAG_SETUP 0x00000004 |
| | | |
| | | /** |
| | | * Get the duration for a Vorbis packet. |
| | | * |
| | | * If @p flags is @c NULL, |
| | | * special frames are considered invalid. |
| | | * |
| | | * @param s Vorbis parser context |
| | | * @param buf buffer containing a Vorbis frame |
| | | * @param buf_size size of the buffer |
| | | * @param flags flags for special frames |
| | | */ |
| | | int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf, |
| | | int buf_size, int *flags); |
| | | |
| | | /** |
| | | * Get the duration for a Vorbis packet. |
| | | * |
| | | * @param s Vorbis parser context |
| | | * @param buf buffer containing a Vorbis frame |
| | | * @param buf_size size of the buffer |
| | | */ |
| | | int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf, |
| | | int buf_size); |
| | | |
| | | void av_vorbis_parse_reset(AVVorbisParseContext *s); |
| | | |
| | | #endif /* AVCODEC_VORBIS_PARSER_H */ |