flat_playlist::entry_t const * flat_playlist::get_entry(index_t const index) const
{
if (index >= get_num_entries())
return 0;
entry_sequence_t const &entry_sequence = entries.get < sequence_tag > ();
entry_sequence_t::const_iterator iter = entry_sequence.begin();
iter = iter + index;
return &(*iter);
}
size_t get_next_ifd_offset(const tiff_handle_t &tiff_handle, size_t this_ifd_offset) {
// the pointer to the next ifd is at the end of this ifd
// an IFD consists of num_entries, the 12-byte entries, then a 4 byte pointer to the next IFD
if (this_ifd_offset == 0) {
// ifd offset is out of range
return 0;
}
uint16_t num_entries = get_num_entries(tiff_handle, this_ifd_offset);
uint32_t next_ifd_offset_pointer = this_ifd_offset + 2 + (num_entries * 12);
try {
return tiff_handle.sbuf->get32u(next_ifd_offset_pointer, tiff_handle.byte_order);
} catch (sbuf_t::range_exception_t &e) {
return 0;
}
}
