Rename SubRip -> TextSubtitle.

1 files changed, 141 insertions, 0 deletions

diff --git a/src/lib/text_subtitle_decoder.cc b/src/lib/text_subtitle_decoder.cc
new file mode 100644
index 000000000..893fd5d3c
--- /dev/null
+++ b/src/lib/text_subtitle_decoder.cc
@@ -0,0 +1,141 @@
+/*
+    Copyright (C) 2014-2016 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "text_subtitle_decoder.h"
+#include "text_subtitle_content.h"
+#include <dcp/subtitle_string.h>
+#include <boost/foreach.hpp>
+#include <iostream>
+
+using std::list;
+using std::vector;
+using std::string;
+using std::cout;
+using std::max;
+using boost::shared_ptr;
+using boost::optional;
+using boost::dynamic_pointer_cast;
+
+TextSubtitleDecoder::TextSubtitleDecoder (shared_ptr<const TextSubtitleContent> content)
+	: SubtitleDecoder (content)
+	, TextSubtitle (content)
+	, _next (0)
+{
+
+}
+
+void
+TextSubtitleDecoder::seek (ContentTime time, bool accurate)
+{
+	SubtitleDecoder::seek (time, accurate);
+
+	_next = 0;
+	while (_next < _subtitles.size() && ContentTime::from_seconds (_subtitles[_next].from.all_as_seconds ()) < time) {
+		++_next;
+	}
+}
+
+bool
+TextSubtitleDecoder::pass (PassReason, bool)
+{
+	if (_next >= _subtitles.size ()) {
+		return true;
+	}
+
+	/* XXX: we are ignoring positioning specified in the file */
+
+	shared_ptr<const TextSubtitleContent> content = dynamic_pointer_cast<const TextSubtitleContent> (_subtitle_content);
+	DCPOMATIC_ASSERT (content);
+
+	list<dcp::SubtitleString> out;
+
+	/* 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) {
+			out.push_back (
+				dcp::SubtitleString (
+					TextSubtitleContent::font_id,
+					j.italic,
+					/* force the colour to whatever is configured */
+					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,
+					/* This 1.015 is an arbitrary value to lift the bottom sub off the bottom
+					   of the screen a bit to a pleasing degree.
+					*/
+					1.015 - ((1 + highest - i.vertical_position.line.get()) * 1.5 / 22),
+					dcp::VALIGN_TOP,
+					j.text,
+					content->outline() ? dcp::BORDER : dcp::NONE,
+					content->outline_colour(),
+					dcp::Time (0, 1000),
+					dcp::Time (0, 1000)
+					)
+				);
+		}
+	}
+
+	text_subtitle (content_time_period (_subtitles[_next]), out);
+
+	++_next;
+	return false;
+}
+
+list<ContentTimePeriod>
+TextSubtitleDecoder::image_subtitles_during (ContentTimePeriod, bool) const
+{
+	return list<ContentTimePeriod> ();
+}
+
+list<ContentTimePeriod>
+TextSubtitleDecoder::text_subtitles_during (ContentTimePeriod p, bool starting) const
+{
+	/* XXX: inefficient */
+
+	list<ContentTimePeriod> d;
+
+	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))) {
+			d.push_back (t);
+		}
+	}
+
+	return d;
+}
+
+ContentTimePeriod
+TextSubtitleDecoder::content_time_period (sub::Subtitle s) const
+{
+	return ContentTimePeriod (
+		ContentTime::from_seconds (s.from.all_as_seconds()),
+		ContentTime::from_seconds (s.to.all_as_seconds())
+		);
+}