Only build FrameRateChange description when required, not every time one is constructed.

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

diff --git a/src/lib/frame_rate_change.cc b/src/lib/frame_rate_change.cc
index 454938ada3d5043de1e983b28b40be7c2a057dd5..31fce6b6d71182625ebc0a43bc4609d1e7f5ab8c 100644 (file)
--- a/src/lib/frame_rate_change.cc
+++ b/src/lib/frame_rate_change.cc
@@ -23,6 +23,8 @@
 
 #include "i18n.h"
 
+using std::string;
+
 static bool
 about_equal (float a, float b)
 {
@@ -73,7 +75,13 @@ FrameRateChange::FrameRateChange (float source_, int dcp_)
 
        speed_up = dcp / (source * factor());
        change_speed = !about_equal (speed_up, 1.0);
+}
 
+string
+FrameRateChange::description () const
+{
+       string description;
+       
        if (!skip && repeat == 1 && !change_speed) {
                description = _("Content and DCP have the same rate.\n");
        } else {
@@ -90,4 +98,6 @@ FrameRateChange::FrameRateChange (float source_, int dcp_)
                        description += String::compose (_("DCP will run at %1%% of the content speed.\n"), pc);
                }
        }
+
+       return description;
 }