/* * 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 */