src/lib/subrip_decoder.cc

   1 /*
   2     Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <dcp/subtitle_string.h>
  21 #include "subrip_decoder.h"
  22 #include "subrip_content.h"
  23
  24 using std::list;
  25 using std::vector;
  26 using boost::shared_ptr;
  27
  28 SubRipDecoder::SubRipDecoder (shared_ptr<const SubRipContent> content)
  29         : SubtitleDecoder (content)
  30         , SubRip (content)
  31         , _next (0)
  32 {
  33
  34 }
  35
  36 void
  37 SubRipDecoder::seek (ContentTime time, bool accurate)
  38 {
  39         SubtitleDecoder::seek (time, accurate);
  40
  41         _next = 0;
  42         list<SubRipSubtitlePiece>::const_iterator i = _subtitles[_next].pieces.begin();
  43         while (i != _subtitles[_next].pieces.end() && _subtitles[_next].period.from < time) {
  44                 ++i;
  45         }
  46
  47 }
  48
  49 bool
  50 SubRipDecoder::pass ()
  51 {
  52         if (_next >= _subtitles.size ()) {
  53                 return true;
  54         }
  55
  56         list<dcp::SubtitleString> out;
  57         for (list<SubRipSubtitlePiece>::const_iterator i = _subtitles[_next].pieces.begin(); i != _subtitles[_next].pieces.end(); ++i) {
  58                 out.push_back (
  59                         dcp::SubtitleString (
  60                                 "Arial",
  61                                 i->italic,
  62                                 dcp::Color (255, 255, 255),
  63                                 72,
  64                                 dcp::Time (rint (_subtitles[_next].period.from.seconds() * 250)),
  65                                 dcp::Time (rint (_subtitles[_next].period.to.seconds() * 250)),
  66                                 0.9,
  67                                 dcp::BOTTOM,
  68                                 i->text,
  69                                 dcp::NONE,
  70                                 dcp::Color (255, 255, 255),
  71                                 0,
  72                                 0
  73                                 )
  74                         );
  75         }
  76
  77         text_subtitle (out);
  78         ++_next;
  79         return false;
  80 }
  81
  82 list<ContentTimePeriod>
  83 SubRipDecoder::subtitles_during (ContentTimePeriod p, bool starting) const
  84 {
  85         /* XXX: inefficient */
  86
  87         list<ContentTimePeriod> d;
  88
  89         for (vector<SubRipSubtitle>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
  90                 if ((starting && p.contains (i->period.from)) || (!starting && p.overlaps (i->period))) {
  91                         d.push_back (i->period);
  92                 }
  93         }
  94
  95         return d;
  96 }