/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
using std::vector;
using std::string;
+using std::min;
+using std::cout;
using boost::shared_ptr;
using boost::optional;
dcp::Size
VideoContentScale::size (shared_ptr<const VideoContent> c, dcp::Size display_container, dcp::Size film_container, int round) const
{
+ /* Work out the size of the content if it were put inside film_container */
+
+ dcp::Size video_size_after_crop = c->video_size_after_crop ();
+
+ dcp::Size size;
+
if (_ratio) {
- return fit_ratio_within (_ratio->ratio (), display_container, round);
+ /* Stretch to fit the requested ratio */
+ size = fit_ratio_within (_ratio->ratio (), film_container, round);
+ } else if (_scale || video_size_after_crop.width > film_container.width || video_size_after_crop.height > film_container.height) {
+ /* Scale, preserving aspect ratio; this is either if we have been asked to scale with no stretch
+ or if the unscaled content is too big for film_container.
+ */
+ size = fit_ratio_within (video_size_after_crop.ratio(), film_container, round);
+ } else {
+ /* No stretch nor scale */
+ size = video_size_after_crop;
}
- dcp::Size const ac = c->video_size_after_crop ();
-
- /* Force scale if the film_container is smaller than the content's image */
- if (_scale || film_container.width < ac.width || film_container.height < ac.height) {
- return fit_ratio_within (ac.ratio (), display_container, round);
+ /* Now scale it down if the display container is smaller than the film container */
+ if (display_container != film_container) {
+ float const scale = min (
+ float (display_container.width) / film_container.width,
+ float (display_container.height) / film_container.height
+ );
+
+ size.width = rint (size.width * scale);
+ size.height = rint (size.height * scale);
}
- /* Scale the image so that it will be in the right place in film_container, even if display_container is a
- different size.
- */
- return dcp::Size (
- c->video_size().width * float(display_container.width) / film_container.width,
- c->video_size().height * float(display_container.height) / film_container.height
- );
+ return size;
}
void
/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
VideoContentScale (bool);
VideoContentScale (boost::shared_ptr<cxml::Node>);
- dcp::Size size (boost::shared_ptr<const VideoContent>, dcp::Size, dcp::Size, int round) const;
+ dcp::Size size (boost::shared_ptr<const VideoContent>, dcp::Size display_container, dcp::Size film_container, int round) const;
std::string id () const;
std::string name () const;
void as_xml (xmlpp::Node *) const;