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();
}
}
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 safe_ptr<basic_frame> receive(int hints) override
{
if(++current_frame_ >= info_.duration)
return basic_frame::eof();
auto dest = basic_frame::empty();
auto source = basic_frame::empty();
tbb::parallel_invoke(
[&]
{
dest = receive_and_follow(dest_producer_, hints);
if(dest == core::basic_frame::late())
dest = dest_producer_->last_frame();
},
[&]
{
source = receive_and_follow(source_producer_, hints);
if(source == core::basic_frame::late())
source = source_producer_->last_frame();
});
monitor_subject_ << monitor::message("/transition/frame") % static_cast<std::int32_t>(current_frame_) % static_cast<std::int32_t>(info_.duration)
<< monitor::message("/transition/type") % [&]() -> std::string
{
switch(info_.type)
{
case transition::mix: return "mix";
case transition::wipe: return "wipe";
case transition::slide: return "slide";
case transition::push: return "push";
case transition::cut: return "cut";
default: return "n/a";
}
}();
return compose(dest, source);
}
virtual safe_ptr<basic_frame> receive(int hints)
{
if(++current_frame_ >= info_.duration)
return basic_frame::eof();
auto dest = basic_frame::empty();
auto source = basic_frame::empty();
tbb::parallel_invoke(
[&]
{
dest = receive_and_follow(dest_producer_, hints);
if(dest == core::basic_frame::late())
dest = dest_producer_->last_frame();
},
[&]
{
source = receive_and_follow(source_producer_, hints);
if(source == core::basic_frame::late())
source = source_producer_->last_frame();
});
return compose(dest, source);
}
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())
{
}