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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_WV_H
#define AVFORMAT_WV_H
#include <stdint.h>
#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 */ |