void
dts_reader_c::read_headers() {
try {
if (m_in->read(m_buf[m_cur_buf], READ_SIZE) != READ_SIZE)
throw mtx::input::header_parsing_x();
m_in->setFilePointer(0, seek_beginning);
} catch (...) {
throw mtx::input::open_x();
}
detect_dts(m_buf[m_cur_buf], READ_SIZE, m_dts14_to_16, m_swap_bytes);
mxdebug_if(m_debug, boost::format("DTS: 14->16 %1% swap %2%\n") % m_dts14_to_16 % m_swap_bytes);
decode_buffer(READ_SIZE);
int pos = find_dts_header(reinterpret_cast<const unsigned char *>(m_buf[m_cur_buf]), READ_SIZE, &m_dtsheader);
if (0 > pos)
throw mtx::input::header_parsing_x();
m_ti.m_id = 0; // ID for this track.
show_demuxer_info();
}
int
dts_reader_c::probe_file(mm_io_c *in,
uint64_t size,
bool strict_mode) {
if (size < READ_SIZE)
return 0;
try {
unsigned char buf[READ_SIZE];
bool dts14_to_16 = false, swap_bytes = false;
in->setFilePointer(0, seek_beginning);
if (in->read(buf, READ_SIZE) != READ_SIZE)
return 0;
in->setFilePointer(0, seek_beginning);
if (!strict_mode && detect_dts(buf, READ_SIZE, dts14_to_16, swap_bytes))
return 1;
int pos = find_consecutive_dts_headers(buf, READ_SIZE, 5);
if ((!strict_mode && (0 <= pos)) || (strict_mode && (0 == pos)))
return 1;
} catch (...) {
}
return 0;
}
bool
wav_dts_demuxer_c::probe(mm_io_cptr &io) {
io->save_pos();
int len = io->read(m_buf[m_cur_buf]->get_buffer(), DTS_READ_SIZE);
io->restore_pos();
if (detect_dts(m_buf[m_cur_buf]->get_buffer(), len, m_pack_14_16, m_swap_bytes)) {
len = decode_buffer(len);
int pos = find_consecutive_dts_headers(m_buf[m_cur_buf]->get_buffer(), len, 5);
if (0 <= pos) {
if (0 > find_dts_header(m_buf[m_cur_buf]->get_buffer() + pos, len - pos, &m_dtsheader))
return false;
mxverb(3, boost::format("DTSinWAV: 14->16 %1% swap %2%\n") % m_pack_14_16 % m_swap_bytes);
return true;
}
}
return false;
}
