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/*
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/>.
*/
#ifndef DCPOMATIC_AUDIO_RING_BUFFERS_H
#define DCPOMATIC_AUDIO_RING_BUFFERS_H
#include "audio_buffers.h"
#include "dcpomatic_time.h"
#include "types.h"
#include <boost/thread.hpp>
#include <list>
class AudioRingBuffers
{
public:
AudioRingBuffers ();
AudioRingBuffers (AudioBuffers const&) = delete;
AudioRingBuffers& operator= (AudioBuffers const&) = delete;
void put (std::shared_ptr<const AudioBuffers> data, dcpomatic::DCPTime time, int frame_rate);
boost::optional<dcpomatic::DCPTime> get (float* out, int channels, int frames);
boost::optional<dcpomatic::DCPTime> peek () const;
void clear ();
/** @return number of frames currently available */
Frame size () const;
private:
mutable boost::mutex _mutex;
std::list<std::pair<std::shared_ptr<const AudioBuffers>, dcpomatic::DCPTime>> _buffers;
int _used_in_head = 0;
};
#endif
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