boost::property_tree::wptree info() const
{
boost::property_tree::wptree info;
info.add(L"status", is_paused_ ? L"paused" : (foreground_ == frame_producer::empty() ? L"stopped" : L"playing"));
info.add(L"auto_delta", auto_play_delta_);
info.add(L"frame-number", frame_number_);
auto nb_frames = foreground_->nb_frames();
info.add(L"nb_frames", nb_frames == std::numeric_limits<int64_t>::max() ? -1 : nb_frames);
info.add(L"frames-left", nb_frames == std::numeric_limits<int64_t>::max() ? -1 : (foreground_->nb_frames() - frame_number_ - auto_play_delta_));
info.add_child(L"foreground.producer", foreground_->info());
info.add_child(L"background.producer", background_->info());
return info;
}
safe_ptr<basic_frame> receive(int hints)
{
try
{
if(is_paused_)
return disable_audio(foreground_->last_frame());
auto frame = receive_and_follow(foreground_, hints);
if(frame == core::basic_frame::late())
return foreground_->last_frame();
auto frames_left = static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(++frame_number_) - static_cast<int64_t>(auto_play_delta_);
if(auto_play_delta_ > -1 && frames_left < 1)
{
play();
return receive(hints);
}
return frame;
}
catch(...)
{
CASPAR_LOG_CURRENT_EXCEPTION();
stop();
return core::basic_frame::empty();
}
}
safe_ptr<basic_frame> receive()
{
try
{
if(is_paused_)
return disable_audio(foreground_->last_frame());
auto frame = receive_and_follow(foreground_, frame_producer::NO_HINT);
if(frame == core::basic_frame::late())
return foreground_->last_frame();
auto frames_left = foreground_->nb_frames() - (++frame_number_) - auto_play_delta_;
if(auto_play_delta_ > -1 && frames_left < 1)
{
play();
return receive();
}
return frame;
}
catch(...)
{
CASPAR_LOG_CURRENT_EXCEPTION();
stop();
return core::basic_frame::empty();
}
}
layer_status status() const
{
layer_status status;
status.foreground = foreground_->print();
status.background = background_->print();
status.is_paused = is_paused_;
status.total_frames = foreground_->nb_frames();
status.current_frame = frame_number_;
return status;
}
safe_ptr<basic_frame> receive(int hints)
{
try
{
monitor_subject_ << monitor::message("/paused") % is_paused_;
if(is_paused_)
{
if(foreground_->last_frame() == basic_frame::empty())
foreground_->receive(frame_producer::NO_HINT);
return disable_audio(foreground_->last_frame());
}
auto foreground = foreground_;
auto frame = receive_and_follow(foreground, hints);
if(foreground != foreground_)
set_foreground(foreground);
if(frame == core::basic_frame::late())
return foreground_->last_frame();
auto frames_left = static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(++frame_number_) - static_cast<int64_t>(auto_play_delta_);
if(auto_play_delta_ > -1 && frames_left < 1)
{
play();
return receive(hints);
}
return frame;
}
catch(...)
{
CASPAR_LOG_CURRENT_EXCEPTION();
stop();
return core::basic_frame::empty();
}
}
virtual uint32_t nb_frames() const override
{
return std::min(fill_producer_->nb_frames(), key_producer_->nb_frames());
}
last_frame_producer(const safe_ptr<frame_producer>& producer)
: print_(producer->print())
, frame_(producer->last_frame() != basic_frame::eof() ? producer->last_frame() : basic_frame::empty())
, nb_frames_(producer->nb_frames())
{
}