/*
    Copyright (C) 2016-2021 Carl Hetherington <cth@carlh.net>

    This file is part of DCP-o-matic.

    DCP-o-matic is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    DCP-o-matic is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.

*/


#include "video_ring_buffers.h"
#include "player_video.h"
#include <list>
#include <iostream>


using std::list;
using std::make_pair;
using std::cout;
using std::pair;
using std::string;
using std::shared_ptr;
using boost::optional;
using namespace dcpomatic;


void
VideoRingBuffers::put(shared_ptr<PlayerVideo> frame, DCPTime time)
{
	boost::mutex::scoped_lock lm(_mutex);
	_data.push_back(make_pair(frame, time));
}


pair<shared_ptr<PlayerVideo>, DCPTime>
VideoRingBuffers::get()
{
	boost::mutex::scoped_lock lm(_mutex);
	if (_data.empty()) {
		return {};
	}
	auto const r = _data.front();
	_data.pop_front();
	return r;
}


Frame
VideoRingBuffers::size() const
{
	boost::mutex::scoped_lock lm(_mutex);
	return _data.size();
}


bool
VideoRingBuffers::empty() const
{
	boost::mutex::scoped_lock lm(_mutex);
	return _data.empty();
}


void
VideoRingBuffers::clear()
{
	boost::mutex::scoped_lock lm(_mutex);
	_data.clear();
}


pair<size_t, string>
VideoRingBuffers::memory_used() const
{
	boost::mutex::scoped_lock lm(_mutex);
	size_t m = 0;
	for (auto const& i: _data) {
		m += i.first->memory_used();
	}
	return make_pair(m, fmt::format("{} frames", _data.size()));
}


void
VideoRingBuffers::reset_metadata(shared_ptr<const Film> film, dcp::Size player_video_container_size)
{
	boost::mutex::scoped_lock lm(_mutex);
	for (auto const& i: _data) {
		i.first->reset_metadata(film, player_video_container_size);
	}
}