Forward-port move of content description generation to lib/ rather than wx/.

[dcpomatic.git] / src / lib / video_content.cc

diff --git a/src/lib/video_content.cc b/src/lib/video_content.cc
index 98c3d929af4f85e4e6f0c4e4cbc4e7b4f9ea1315..3470e62bfdc9891c5f00d283eddda0a6bf24c833 100644 (file)
--- a/src/lib/video_content.cc
+++ b/src/lib/video_content.cc
@@ -53,6 +53,9 @@ using std::cout;
 using std::vector;
 using std::min;
 using std::max;
+using std::stringstream;
+using std::fixed;
+using std::setprecision;
 using boost::shared_ptr;
 using boost::optional;
 using boost::dynamic_pointer_cast;
@@ -509,3 +512,62 @@ VideoContent::fade (VideoFrame f) const
 
        return optional<float> ();
 }
+
+string
+VideoContent::processing_description () const
+{
+       /* stringstream is OK here as this string is just for presentation to the user */
+       stringstream d;
+
+       if (video_size().width && video_size().height) {
+               d << String::compose (
+                       _("Content video is %1x%2"),
+                       video_size_after_3d_split().width,
+                       video_size_after_3d_split().height
+                       );
+
+               d << " (" << fixed << setprecision(2) << video_size_after_3d_split().ratio() << ":1)\n";
+       }
+
+       if ((crop().left || crop().right || crop().top || crop().bottom) && video_size() != dcp::Size (0, 0)) {
+               dcp::Size cropped = video_size_after_crop ();
+               d << String::compose (
+                       _("Cropped to %1x%2"),
+                       cropped.width, cropped.height
+                       );
+
+               d << " (" << fixed << setprecision(2) << cropped.ratio () << ":1)\n";
+       }
+
+       shared_ptr<const Film> film = _film.lock ();
+       assert (film);
+
+       dcp::Size const container_size = film->frame_size ();
+       dcp::Size const scaled = scale().size (dynamic_pointer_cast<const VideoContent> (shared_from_this ()), container_size, container_size, 1);
+
+       if (scaled != video_size_after_crop ()) {
+               d << String::compose (
+                       _("Scaled to %1x%2"),
+                       scaled.width, scaled.height
+                       );
+
+               d << " (" << fixed << setprecision(2) << scaled.ratio() << ":1)\n";
+       }
+       
+       if (scaled != container_size) {
+               d << String::compose (
+                       _("Padded with black to %1x%2"),
+                       container_size.width, container_size.height
+                       );
+
+               d << " (" << fixed << setprecision(2) << container_size.ratio () << ":1)\n";
+       }
+
+       d << _("Content frame rate");
+       d << " " << fixed << setprecision(4) << video_frame_rate() << "\n";
+       
+       FrameRateChange frc (video_frame_rate(), film->video_frame_rate ());
+       d << frc.description () << "\n";
+
+       return d.str ();
+}