/* * WavPack shared functions * * 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 AVFORMAT_WV_H #define AVFORMAT_WV_H #include #define WV_HEADER_SIZE 32 #define WV_FLAG_INITIAL_BLOCK (1 << 11) #define WV_FLAG_FINAL_BLOCK (1 << 12) // specs say that maximum block size is 1Mb #define WV_BLOCK_LIMIT 1048576 typedef struct WvHeader { uint32_t blocksize; //< size of the block data (excluding the header) uint16_t version; //< bitstream version uint32_t total_samples; //< total number of samples in the stream uint32_t block_idx; //< index of the first sample in this block uint32_t samples; //< number of samples in this block uint32_t flags; uint32_t crc; int initial, final; } WvHeader; /** * Parse a WavPack block header. * * @param wv this struct will be filled with parse header information * @param data header data, must be WV_HEADER_SIZE bytes long * * @return 0 on success, a negative AVERROR code on failure */ int ff_wv_parse_header(WvHeader *wv, const uint8_t *data); #endif /* AVFORMAT_WV_H */