int
hdmv_textst_packetizer_c::process(packet_cptr packet) {
if ((packet->data->get_size() < 13) || (static_cast<mtx::hdmv_textst::segment_type_e>(packet->data->get_buffer()[0]) != mtx::hdmv_textst::dialog_presentation_segment))
return FILE_STATUS_MOREDATA;
auto buf = packet->data->get_buffer();
auto start_pts = timestamp_c::mpeg((static_cast<int64_t>(buf[3] & 1) << 32) | get_uint32_be(&buf[4]));
auto end_pts = timestamp_c::mpeg((static_cast<int64_t>(buf[8] & 1) << 32) | get_uint32_be(&buf[9]));
if (!packet->has_timestamp())
packet->timestamp = start_pts.to_ns();
if (!packet->has_duration())
packet->duration = (end_pts - start_pts).abs().to_ns();
packet->duration_mandatory = true;
add_packet(packet);
return FILE_STATUS_MOREDATA;
}
void
generic_packetizer_c::add_packet2(packet_cptr pack) {
if (pack->has_discard_padding())
set_required_matroska_version(4);
pack->timecode = ADJUST_TIMECODE(pack->timecode);
if (pack->has_bref())
pack->bref = ADJUST_TIMECODE(pack->bref);
if (pack->has_fref())
pack->fref = ADJUST_TIMECODE(pack->fref);
if (pack->has_duration()) {
pack->duration = static_cast<int64_t>(pack->duration * m_ti.m_tcsync.numerator / m_ti.m_tcsync.denominator);
if (pack->has_discard_padding())
pack->duration -= std::min(pack->duration, pack->discard_padding.to_ns());
}
if ((2 > m_htrack_min_cache) && pack->has_fref()) {
set_track_min_cache(2);
rerender_track_headers();
} else if ((1 > m_htrack_min_cache) && pack->has_bref()) {
set_track_min_cache(1);
rerender_track_headers();
}
if (0 > pack->timecode)
return;
// 'timecode < safety_last_timecode' may only occur for B frames. In this
// case we have the coding order, e.g. IPB1B2 and the timecodes
// I: 0, P: 120, B1: 40, B2: 80.
if (!m_relaxed_timecode_checking && (pack->timecode < m_safety_last_timecode) && (0 > pack->fref) && hack_engaged(ENGAGE_ENABLE_TIMECODE_WARNING)) {
if (track_audio == m_htrack_type) {
int64_t needed_timecode_offset = m_safety_last_timecode + m_safety_last_duration - pack->timecode;
m_correction_timecode_offset += needed_timecode_offset;
pack->timecode += needed_timecode_offset;
if (pack->has_bref())
pack->bref += needed_timecode_offset;
if (pack->has_fref())
pack->fref += needed_timecode_offset;
mxwarn_tid(m_ti.m_fname, m_ti.m_id,
boost::format(Y("The current packet's timecode is smaller than that of the previous packet. "
"This usually means that the source file is a Matroska file that has not been created 100%% correctly. "
"The timecodes of all packets will be adjusted by %1%ms in order not to lose any data. "
"This may throw audio/video synchronization off, but that can be corrected with mkvmerge's \"--sync\" option. "
"If you already use \"--sync\" and you still get this warning then do NOT worry -- this is normal. "
"If this error happens more than once and you get this message more than once for a particular track "
"then either is the source file badly mastered, or mkvmerge contains a bug. "
"In this case you should contact the author Moritz Bunkus <*****@*****.**>.\n"))
% ((needed_timecode_offset + 500000) / 1000000));
} else
mxwarn_tid(m_ti.m_fname, m_ti.m_id,
boost::format("generic_packetizer_c::add_packet2: timecode < last_timecode (%1% < %2%). %3%\n")
% format_timestamp(pack->timecode) % format_timestamp(m_safety_last_timecode) % BUGMSG);
}
m_safety_last_timecode = pack->timecode;
m_safety_last_duration = pack->duration;
pack->timecode_before_factory = pack->timecode;
m_packet_queue.push_back(pack);
if (!m_timestamp_factory || (TFA_IMMEDIATE == m_timestamp_factory_application_mode))
apply_factory_once(pack);
else
apply_factory();
}