From 1679c3dc40262733f46dda9f4151367bf93f2b76 Mon Sep 17 00:00:00 2001 From: Carl Hetherington Date: Wed, 19 Feb 2020 17:23:21 +0100 Subject: Nicer fix for 2D-labelled-3D checking from master. --- src/lib/frame_interval_checker.cc | 66 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/lib/frame_interval_checker.cc (limited to 'src/lib/frame_interval_checker.cc') diff --git a/src/lib/frame_interval_checker.cc b/src/lib/frame_interval_checker.cc new file mode 100644 index 000000000..27c0224ec --- /dev/null +++ b/src/lib/frame_interval_checker.cc @@ -0,0 +1,66 @@ +/* + Copyright (C) 2020 Carl Hetherington + + 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 . + +*/ + +#include "frame_interval_checker.h" + +using namespace dcpomatic; + +int const FrameIntervalChecker::_frames = 16; + +void +FrameIntervalChecker::feed (ContentTime time, double frame_rate) +{ + /* The caller isn't meant to feed too much data before + calling guess() and destroying the FrameIntervalChecker. + */ + DCPOMATIC_ASSERT (_intervals.size() < _frames); + + if (_last) { + _intervals.push_back ((time - *_last).seconds() * frame_rate); + } + + _last = time; +} + +FrameIntervalChecker::Guess +FrameIntervalChecker::guess () const +{ + if (_intervals.size() < _frames) { + /* How soon can you land? + * I can't tell. + * You can tell me, I'm a doctor. + * Nom I mean I'm just not sure. + * Can't you take a guess? + * Well, not for another two hours. + * You can't take a guess for another two hours? + */ + return AGAIN; + } + + int near_1 = 0; + BOOST_FOREACH (double i, _intervals) { + if (i > 0.5) { + ++near_1; + } + } + + return (near_1 < 3 * _frames / 4) ? PROBABLY_3D : PROBABLY_NOT_3D; +} + -- cgit v1.2.3