block_t *(*pf_block) ( stream_t *, int i_size );
int (*pf_read) ( stream_t *, void *p_read, int i_read );
- int (*pf_peek) ( stream_t *, uint8_t **pp_peek, int i_peek );
+ int (*pf_peek) ( stream_t *, const uint8_t **pp_peek, int i_peek );
int (*pf_control)( stream_t *, int i_query, va_list );
void (*pf_destroy)( stream_t *);