char *vss_get_header(size_t *header_len);
struct timeval *vss_chunk_time(void);
int guess_audio_format(const char *name);
+int compute_afhi(const char *path, char *data, size_t size,
+ struct audio_format_info *afhi);
const char *supported_audio_formats(void);
int vss_get_chunk(long unsigned chunk_num, char **buf, size_t *len);