Rename TYPE_DEBUG_PLAYER to TYPE_DEBUG_VIDEO_VIEW.

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

diff --git a/src/lib/util.cc b/src/lib/util.cc
index bbb44436713281d5a3a88ee0bec5a265bd2e6efa..c1ef4245f16b18713dd008bbb9d212ab858b1674 100644 (file)
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012-2019 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2020 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -394,7 +394,6 @@ dcpomatic_setup ()
 
        Ratio::setup_ratios ();
        PresetColourConversion::setup_colour_conversion_presets ();
-       VideoContentScale::setup_scales ();
        DCPContentType::setup_dcp_content_types ();
        Filter::setup_filters ();
        CinemaSoundProcessor::setup_cinema_sound_processors ();
@@ -927,7 +926,7 @@ emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size
 {
        /* XXX: this is rather inefficient; decoding the image just to get its size */
        FFmpegImageProxy proxy (sub.png_image());
-       shared_ptr<Image> image = proxy.image().first;
+       shared_ptr<Image> image = proxy.image().image;
        /* set up rect with height and width */
        dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
 
@@ -1171,3 +1170,34 @@ write_swaroop_chain (shared_ptr<const dcp::CertificateChain> chain, boost::files
 }
 
 #endif
+
+double
+db_to_linear (double db)
+{
+       return pow(10, db / 20);
+}
+
+double
+linear_to_db (double linear)
+{
+       return 20 * log10(linear);
+}
+
+
+dcp::Size
+scale_for_display (dcp::Size s, dcp::Size display_container, dcp::Size film_container)
+{
+       /* 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
+                       );
+
+               s.width = lrintf (s.width * scale);
+               s.height = lrintf (s.height * scale);
+       }
+
+       return s;
+}
+