Merge branch 'master' of /home/carl/git/dvdomatic

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

diff --git a/src/lib/subtitle.cc b/src/lib/subtitle.cc
index dcb747828a954598074619e6ecf57833aa6ffcf4..5c1ad97064fd1042450b99638d21de8a62f049b5 100644 (file)
--- a/src/lib/subtitle.cc
+++ b/src/lib/subtitle.cc
@@ -24,10 +24,12 @@
 #include "subtitle.h"
 #include "image.h"
 #include "exceptions.h"
-#include "film_state.h"
+
+#include "i18n.h"
 
 using namespace std;
 using namespace boost;
+using libdcp::Size;
 
 /** Construct a TimedSubtitle.  This is a subtitle image, position,
  *  and a range of time over which it should be shown.
@@ -35,24 +37,28 @@ using namespace boost;
  */
 TimedSubtitle::TimedSubtitle (AVSubtitle const & sub)
 {
-       /* subtitle PTS in seconds */
-       float const packet_time = (sub.pts / AV_TIME_BASE) + float (sub.pts % AV_TIME_BASE) / 1e6;
+       assert (sub.num_rects > 0);
+       
+       /* Subtitle PTS in seconds (within the source, not taking into account any of the
+          source that we may have chopped off for the DCP)
+       */
+       double const packet_time = static_cast<double> (sub.pts) / AV_TIME_BASE;
        
        /* hence start time for this sub */
        _from = packet_time + (double (sub.start_display_time) / 1e3);
        _to = packet_time + (double (sub.end_display_time) / 1e3);
 
        if (sub.num_rects > 1) {
-               throw DecodeError ("multi-part subtitles not yet supported");
+               throw DecodeError (_("multi-part subtitles not yet supported"));
        }
 
        AVSubtitleRect const * rect = sub.rects[0];
 
        if (rect->type != SUBTITLE_BITMAP) {
-               throw DecodeError ("non-bitmap subtitles not yet supported");
+               throw DecodeError (_("non-bitmap subtitles not yet supported"));
        }
        
-       shared_ptr<Image> image (new AlignedImage (PIX_FMT_RGBA, Size (rect->w, rect->h)));
+       shared_ptr<Image> image (new SimpleImage (PIX_FMT_RGBA, libdcp::Size (rect->w, rect->h), true));
 
        /* Start of the first line in the subtitle */
        uint8_t* sub_p = rect->pict.data[0];
@@ -74,7 +80,7 @@ TimedSubtitle::TimedSubtitle (AVSubtitle const & sub)
        _subtitle.reset (new Subtitle (Position (rect->x, rect->y), image));
 }      
 
-/** @param t Time in seconds from the start of the film */
+/** @param t Time in seconds from the start of the source */
 bool
 TimedSubtitle::displayed_at (double t) const
 {
@@ -102,13 +108,13 @@ Subtitle::Subtitle (Position p, shared_ptr<Image> i)
  *  in the coordinate space of the source.
  *  @param subtitle_scale scaling factor to apply to the subtitle image.
  */
-Rectangle
+Rect
 subtitle_transformed_area (
        float target_x_scale, float target_y_scale,
-       Rectangle sub_area, int subtitle_offset, float subtitle_scale
+       Rect sub_area, int subtitle_offset, float subtitle_scale
        )
 {
-       Rectangle tx;
+       Rect tx;
 
        sub_area.y += subtitle_offset;
 
@@ -130,15 +136,15 @@ subtitle_transformed_area (
         * Combining these two translations gives these expressions.
         */
        
-       tx.x = target_x_scale * (sub_area.x + (sub_area.width * (1 - subtitle_scale) / 2));
-       tx.y = target_y_scale * (sub_area.y + (sub_area.height * (1 - subtitle_scale) / 2));
+       tx.x = rint (target_x_scale * (sub_area.x + (sub_area.width * (1 - subtitle_scale) / 2)));
+       tx.y = rint (target_y_scale * (sub_area.y + (sub_area.height * (1 - subtitle_scale) / 2)));
 
        return tx;
 }
 
-/** @return area that this subtitle take up, in the original uncropped source's coordinate space */
-Rectangle
+/** @return area that this subtitle takes up, in the original uncropped source's coordinate space */
+Rect
 Subtitle::area () const
 {
-       return Rectangle (_position.x, _position.y, _image->size().width, _image->size().height);
+       return Rect (_position.x, _position.y, _image->size().width, _image->size().height);
 }