void
truehd_reader_c::read_headers() {
try {
int tag_size_start = skip_id3v2_tag(*m_in);
int tag_size_end = id3_tag_present_at_end(*m_in);
if (0 > tag_size_start)
tag_size_start = 0;
if (0 < tag_size_end)
m_size -= tag_size_end;
size_t init_read_len = std::min(m_size - tag_size_start, static_cast<uint64_t>(TRUEHD_READ_SIZE));
if (m_in->read(m_chunk->get_buffer(), init_read_len) != init_read_len)
throw mtx::input::header_parsing_x();
m_in->setFilePointer(tag_size_start, seek_beginning);
truehd_parser_c parser;
parser.add_data(m_chunk->get_buffer(), init_read_len);
auto found_truehd = false;
auto found_ac3 = false;
while (parser.frame_available() && (!found_truehd || !found_ac3)) {
auto frame = parser.get_next_frame();
if (frame->is_ac3()) {
if (!found_ac3) {
found_ac3 = true;
m_ac3_header = frame->m_ac3_header;
}
continue;
}
if (!frame->is_sync())
continue;
m_header = frame;
found_truehd = true;
}
m_ti.m_id = 0; // ID for this track.
show_demuxer_info();
} catch (mtx::mm_io::exception &) {
throw mtx::input::open_x();
}
}
void
truehd_ac3_splitting_packet_converter_c::process_frames() {
while (m_parser.frame_available()) {
auto frame = m_parser.get_next_frame();
if (frame->is_truehd() && m_ptzr) {
static_cast<truehd_packetizer_c *>(m_ptzr)->process_framed(frame, m_truehd_timestamp);
m_truehd_timestamp = -1;
} else if (frame->is_ac3() && m_ac3_ptzr) {
m_ac3_ptzr->process(std::make_shared<packet_t>(frame->m_data, m_ac3_timestamp));
m_ac3_timestamp = -1;
}
}
}
