Some more decode logging.

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

diff --git a/src/lib/text_subtitle_decoder.cc b/src/lib/text_subtitle_decoder.cc
index 6099cf3eef80ddc617843fa263d9e8a620f8d689..ec60bd36b52327a838cf73460c01f0ad74c04b16 100644 (file)
--- a/src/lib/text_subtitle_decoder.cc
+++ b/src/lib/text_subtitle_decoder.cc
@@ -34,7 +34,7 @@ using boost::shared_ptr;
 using boost::optional;
 using boost::dynamic_pointer_cast;
 
-TextSubtitleDecoder::TextSubtitleDecoder (shared_ptr<const TextSubtitleContent> content)
+TextSubtitleDecoder::TextSubtitleDecoder (shared_ptr<const TextSubtitleContent> content, shared_ptr<Log> log)
        : TextSubtitle (content)
        , _next (0)
 {
@@ -42,6 +42,7 @@ TextSubtitleDecoder::TextSubtitleDecoder (shared_ptr<const TextSubtitleContent>
                new SubtitleDecoder (
                        this,
                        content->subtitle,
+                       log,
                        bind (&TextSubtitleDecoder::image_subtitles_during, this, _1, _2),
                        bind (&TextSubtitleDecoder::text_subtitles_during, this, _1, _2)
                        )
@@ -66,83 +67,9 @@ TextSubtitleDecoder::pass (PassReason, bool)
                return true;
        }
 
-       list<dcp::SubtitleString> out;
-
-       /* See if our next subtitle needs to be placed on screen by us */
-       bool needs_placement = false;
-       BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
-               if (!i.vertical_position.reference && i.vertical_position.reference.get() == sub::TOP_OF_SUBTITLE) {
-                       needs_placement = true;
-               }
-       }
-
-       /* Highest line index in this subtitle */
-       int highest = 0;
-       BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
-               DCPOMATIC_ASSERT (i.vertical_position.reference && i.vertical_position.reference.get() == sub::TOP_OF_SUBTITLE);
-               DCPOMATIC_ASSERT (i.vertical_position.line);
-               highest = max (highest, i.vertical_position.line.get());
-       }
-
-       BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
-               BOOST_FOREACH (sub::Block j, i.blocks) {
-
-                       float v_position;
-                       dcp::VAlign v_align;
-                       if (needs_placement) {
-                               DCPOMATIC_ASSERT (i.vertical_position.line);
-                               /* This 0.878 is an arbitrary value to lift the bottom sub off the bottom
-                                  of the screen a bit to a pleasing degree.
-                               */
-                               v_position = 0.878 + i.vertical_position.line.get() * 1.5 / 22;
-                               v_align = dcp::VALIGN_BOTTOM;
-                       } else {
-                               DCPOMATIC_ASSERT (i.vertical_position.proportional);
-                               DCPOMATIC_ASSERT (i.vertical_position.reference);
-                               v_position = i.vertical_position.proportional.get();
-                               switch (i.vertical_position.reference.get()) {
-                               case sub::TOP_OF_SCREEN:
-                                       v_align = dcp::VALIGN_TOP;
-                                       break;
-                               case sub::CENTRE_OF_SCREEN:
-                                       v_align = dcp::VALIGN_CENTER;
-                                       break;
-                               case sub::BOTTOM_OF_SCREEN:
-                                       v_align = dcp::VALIGN_BOTTOM;
-                                       break;
-                               default:
-                                       v_align = dcp::VALIGN_TOP;
-                                       break;
-                               }
-                       }
-
-                       out.push_back (
-                               dcp::SubtitleString (
-                                       TextSubtitleContent::font_id,
-                                       j.italic,
-                                       j.bold,
-                                       /* force the colour to whatever is configured */
-                                       subtitle->content()->colour(),
-                                       j.font_size.points (72 * 11),
-                                       1.0,
-                                       dcp::Time (_subtitles[_next].from.all_as_seconds(), 1000),
-                                       dcp::Time (_subtitles[_next].to.all_as_seconds(), 1000),
-                                       0,
-                                       dcp::HALIGN_CENTER,
-                                       v_position,
-                                       v_align,
-                                       dcp::DIRECTION_LTR,
-                                       j.text,
-                                       subtitle->content()->outline() ? dcp::BORDER : dcp::NONE,
-                                       subtitle->content()->outline_colour(),
-                                       dcp::Time (0, 1000),
-                                       dcp::Time (0, 1000)
-                                       )
-                               );
-               }
-       }
-
-       subtitle->give_text (content_time_period (_subtitles[_next]), out);
+       ContentTimePeriod const p = content_time_period (_subtitles[_next]);
+       subtitle->give_text (p, _subtitles[_next]);
+       subtitle->set_position (p.from);
 
        ++_next;
        return false;
@@ -161,10 +88,20 @@ TextSubtitleDecoder::text_subtitles_during (ContentTimePeriod p, bool starting)
 
        list<ContentTimePeriod> d;
 
+       /* Only take `during' (not starting) subs if they overlap more than half the requested period;
+          here's the threshold for being significant.
+       */
+       ContentTime const significant (p.duration().get() / 2);
+
        for (vector<sub::Subtitle>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
                ContentTimePeriod t = content_time_period (*i);
-               if ((starting && p.contains (t.from)) || (!starting && p.overlaps (t))) {
+               if (starting && p.contains(t.from)) {
                        d.push_back (t);
+               } else if (!starting) {
+                       optional<ContentTimePeriod> const o = p.overlap (t);
+                       if (o && o->duration() > significant) {
+                               d.push_back (t);
+                       }
                }
        }
 
@@ -179,3 +116,9 @@ TextSubtitleDecoder::content_time_period (sub::Subtitle s) const
                ContentTime::from_seconds (s.to.all_as_seconds())
                );
 }
+
+void
+TextSubtitleDecoder::reset ()
+{
+       subtitle->reset ();
+}