Rename SubRip -> TextSubtitle.

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

diff --git a/src/lib/text_subtitle.cc b/src/lib/text_subtitle.cc
new file mode 100644 (file)
index 0000000..d55ff68
--- /dev/null
+++ b/src/lib/text_subtitle.cc
@@ -0,0 +1,80 @@
+/*
+    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.h"
+#include "cross.h"
+#include "exceptions.h"
+#include "text_subtitle_content.h"
+#include <sub/subrip_reader.h>
+#include <sub/collect.h>
+#include <unicode/ucsdet.h>
+#include <unicode/ucnv.h>
+#include <iostream>
+
+#include "i18n.h"
+
+using std::vector;
+using std::cout;
+using std::string;
+using boost::shared_ptr;
+using boost::scoped_array;
+using dcp::Data;
+
+TextSubtitle::TextSubtitle (shared_ptr<const TextSubtitleContent> content)
+{
+       Data in (content->path (0));
+
+       UErrorCode status = U_ZERO_ERROR;
+       UCharsetDetector* detector = ucsdet_open (&status);
+       ucsdet_setText (detector, reinterpret_cast<const char *> (in.data().get()), in.size(), &status);
+
+       UCharsetMatch const * match = ucsdet_detect (detector, &status);
+       char const * in_charset = ucsdet_getName (match, &status);
+
+       UConverter* to_utf16 = ucnv_open (in_charset, &status);
+       /* This is a guess; I think we should be able to encode any input in 4 times its input size */
+       scoped_array<uint16_t> utf16 (new uint16_t[in.size() * 2]);
+       int const utf16_len = ucnv_toUChars (
+               to_utf16, reinterpret_cast<UChar*>(utf16.get()), in.size() * 2,
+               reinterpret_cast<const char *> (in.data().get()), in.size(),
+               &status
+               );
+
+       UConverter* to_utf8 = ucnv_open ("UTF-8", &status);
+       /* Another guess */
+       scoped_array<char> utf8 (new char[utf16_len * 2]);
+       ucnv_fromUChars (to_utf8, utf8.get(), utf16_len * 2, reinterpret_cast<UChar*>(utf16.get()), utf16_len, &status);
+
+       ucsdet_close (detector);
+       ucnv_close (to_utf16);
+       ucnv_close (to_utf8);
+
+       sub::SubripReader reader (utf8.get());
+       _subtitles = sub::collect<vector<sub::Subtitle> > (reader.subtitles ());
+}
+
+ContentTime
+TextSubtitle::length () const
+{
+       if (_subtitles.empty ()) {
+               return ContentTime ();
+       }
+
+       return ContentTime::from_seconds (_subtitles.back().to.all_as_seconds ());
+}