bool
cluster_helper_c::add_to_cues_maybe(packet_cptr &pack) {
auto &source = *pack->source;
auto strategy = source.get_cue_creation();
// Update the cues (index table) either if cue entries for I frames were requested and this is an I frame...
bool add = (CUE_STRATEGY_IFRAMES == strategy) && pack->is_key_frame();
// ... or if a codec state change is present ...
add = add || !!pack->codec_state;
// ... or if the user requested entries for all frames ...
add = add || (CUE_STRATEGY_ALL == strategy);
// ... or if this is an audio track, there is no video track and the
// last cue entry was created more than 2s ago.
add = add || ( (CUE_STRATEGY_SPARSE == strategy)
&& (track_audio == source.get_track_type())
&& !g_video_packetizer
&& ( (0 > source.get_last_cue_timecode())
|| ((pack->assigned_timecode - source.get_last_cue_timecode()) >= 2000000000)));
if (!add)
return false;
source.set_last_cue_timecode(pack->assigned_timecode);
++m->num_cue_elements;
g_cue_writing_requested = 1;
return true;
}
void
cluster_helper_c::split_if_necessary(packet_cptr &packet) {
if ( !splitting()
|| (m->split_points.end() == m->current_split_point)
|| (g_file_num > g_split_max_num_files)
|| !packet->is_key_frame()
|| ( (packet->source->get_track_type() != track_video)
&& g_video_packetizer))
return;
bool split_now = false;
// Maybe we want to start a new file now.
if (split_point_c::size == m->current_split_point->m_type) {
int64_t additional_size = 0;
if (!m->packets.empty())
// Cluster + Cluster timecode: roughly 21 bytes. Add all frame sizes & their overheaders, too.
additional_size = 21 + boost::accumulate(m->packets, 0, [](size_t size, const packet_cptr &p) {
return size + p->data->get_size() + (p->is_key_frame() ? 10 : p->is_p_frame() ? 13 : 16);
});
additional_size += 18 * m->num_cue_elements;
mxdebug_if(m->debug_splitting,
boost::format("cluster_helper split decision: header_overhead: %1%, additional_size: %2%, bytes_in_file: %3%, sum: %4%\n")
% m->header_overhead % additional_size % m->bytes_in_file % (m->header_overhead + additional_size + m->bytes_in_file));
if ((m->header_overhead + additional_size + m->bytes_in_file) >= m->current_split_point->m_point)
split_now = true;
} else if ( (split_point_c::duration == m->current_split_point->m_type)
&& (0 <= m->first_timecode_in_file)
&& (packet->assigned_timecode - m->first_timecode_in_file) >= m->current_split_point->m_point)
split_now = true;
else if ( ( (split_point_c::timecode == m->current_split_point->m_type)
|| (split_point_c::parts == m->current_split_point->m_type))
&& (packet->assigned_timecode >= m->current_split_point->m_point))
split_now = true;
else if ( ( (split_point_c::frame_field == m->current_split_point->m_type)
|| (split_point_c::parts_frame_field == m->current_split_point->m_type))
&& (m->frame_field_number >= m->current_split_point->m_point))
split_now = true;
if (!split_now)
return;
split(packet);
}
void
cluster_helper_c::render_before_adding_if_necessary(packet_cptr &packet) {
int64_t timecode = get_timecode();
int64_t timecode_delay = ( (packet->assigned_timecode > m->max_timecode_in_cluster)
|| (-1 == m->max_timecode_in_cluster)) ? packet->assigned_timecode : m->max_timecode_in_cluster;
timecode_delay -= ( (-1 == m->min_timecode_in_cluster)
|| (packet->assigned_timecode < m->min_timecode_in_cluster)) ? packet->assigned_timecode : m->min_timecode_in_cluster;
timecode_delay = (int64_t)(timecode_delay / g_timecode_scale);
mxdebug_if(m->debug_packets,
boost::format("cluster_helper_c::add_packet(): new packet { source %1%/%2% "
"timecode: %3% duration: %4% bref: %5% fref: %6% assigned_timecode: %7% timecode_delay: %8% }\n")
% packet->source->m_ti.m_id % packet->source->m_ti.m_fname % packet->timecode % packet->duration
% packet->bref % packet->fref % packet->assigned_timecode % format_timecode(timecode_delay));
bool is_video_keyframe = (packet->source == g_video_packetizer) && packet->is_key_frame();
bool do_render = (std::numeric_limits<int16_t>::max() < timecode_delay)
|| (std::numeric_limits<int16_t>::min() > timecode_delay)
|| ( (std::max<int64_t>(0, m->min_timecode_in_cluster) > m->previous_cluster_tc)
&& (packet->assigned_timecode > m->min_timecode_in_cluster)
&& (!g_video_packetizer || !is_video_keyframe || m->first_video_keyframe_seen)
&& ( (packet->gap_following && !m->packets.empty())
|| ((packet->assigned_timecode - timecode) > g_max_ns_per_cluster)
|| is_video_keyframe));
if (is_video_keyframe)
m->first_video_keyframe_seen = true;
mxdebug_if(m->debug_rendering,
boost::format("render check cur_tc %9% min_tc_ic %1% prev_cl_tc %2% test %3% is_vid_and_key %4% tc_delay %5% gap_following_and_not_empty %6% cur_tc>min_tc_ic %8% first_video_key_seen %10% do_render %7%\n")
% m->min_timecode_in_cluster % m->previous_cluster_tc % (std::max<int64_t>(0, m->min_timecode_in_cluster) > m->previous_cluster_tc) % is_video_keyframe
% timecode_delay % (packet->gap_following && !m->packets.empty()) % do_render % (packet->assigned_timecode > m->min_timecode_in_cluster) % packet->assigned_timecode % m->first_video_keyframe_seen);
if (!do_render)
return;
render();
prepare_new_cluster();
}
