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Diffstat (limited to 'src/lib/frame_interval_checker.h')
| -rw-r--r-- | src/lib/frame_interval_checker.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/lib/frame_interval_checker.h b/src/lib/frame_interval_checker.h new file mode 100644 index 000000000..14b715c17 --- /dev/null +++ b/src/lib/frame_interval_checker.h @@ -0,0 +1,50 @@ +/* + Copyright (C) 2020 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 "dcpomatic_time.h" +#include <boost/optional.hpp> +#include <boost/noncopyable.hpp> +#include <vector> + +class FrameIntervalChecker : public boost::noncopyable +{ +public: + void feed (ContentTime time, double frame_rate); + + enum Guess + { + AGAIN, + PROBABLY_3D, + PROBABLY_NOT_3D + }; + + Guess guess () const; + +private: + boost::optional<ContentTime> _last; + /** Intervals of last frames, in fractions of a frame; i.e. 1 in here + * means the last two frames were one frame interval apart according + * to the frame rate passed to ::feed(). + */ + std::vector<double> _intervals; + + static int const _frames; +}; + |