X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fsubtitle_decoder.cc;h=90bedf0ce8996925bc1c52d90704b43a4565b98e;hb=67a404fff364c6e1fa02eab270755895ba0e1fe8;hp=c59406c3659c80659d10b3bd11ce39ec6d77aeab;hpb=a28ef704adf8c5bfa45b3d6285f741af64758ceb;p=dcpomatic.git diff --git a/src/lib/subtitle_decoder.cc b/src/lib/subtitle_decoder.cc index c59406c36..90bedf0ce 100644 --- a/src/lib/subtitle_decoder.cc +++ b/src/lib/subtitle_decoder.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2013-2016 Carl Hetherington + Copyright (C) 2013-2017 Carl Hetherington This file is part of DCP-o-matic. @@ -41,149 +41,60 @@ SubtitleDecoder::SubtitleDecoder ( Decoder* parent, shared_ptr c, shared_ptr log, - function (ContentTimePeriod, bool)> image_during, - function (ContentTimePeriod, bool)> text_during + ContentTime first ) : DecoderPart (parent, log) , _content (c) - , _image_during (image_during) - , _text_during (text_during) + , _position (first) { } -/** Called by subclasses when an image subtitle is ready. - * @param period Period of the subtitle. +/** Called by subclasses when an image subtitle is starting. + * @param from From time of the subtitle. * @param image Subtitle image. * @param rect Area expressed as a fraction of the video frame that this subtitle * is for (e.g. a width of 0.5 means the width of the subtitle is half the width * of the video frame) */ void -SubtitleDecoder::give_image (ContentTimePeriod period, shared_ptr image, dcpomatic::Rect rect) +SubtitleDecoder::emit_image_start (ContentTime from, shared_ptr image, dcpomatic::Rect rect) { - _decoded_image.push_back (ContentImageSubtitle (period, image, rect)); - _position = period.from; + ImageStart (ContentImageSubtitle (from, image, rect)); } void -SubtitleDecoder::give_text (ContentTimePeriod period, list s) +SubtitleDecoder::emit_text_start (ContentTime from, list s) { - /* We must escape < and > in strings, otherwise they might confuse our subtitle - renderer (which uses some HTML-esque markup to do bold/italic etc.) - */ BOOST_FOREACH (dcp::SubtitleString& i, s) { + /* We must escape < and > in strings, otherwise they might confuse our subtitle + renderer (which uses some HTML-esque markup to do bold/italic etc.) + */ string t = i.text (); boost::algorithm::replace_all (t, "<", "<"); boost::algorithm::replace_all (t, ">", ">"); i.set_text (t); - } - - _decoded_text.push_back (ContentTextSubtitle (period, s)); - _position = period.from; -} - -/** Get the subtitles that correspond to a given list of periods. - * @param subs Subtitles. - * @param sp Periods for which to extract subtitles from subs. - */ -template -list -SubtitleDecoder::get (list const & subs, list const & sp, ContentTimePeriod period, bool accurate) -{ - if (sp.empty ()) { - return list (); - } - - /* Find the time of the first subtitle we don't have in subs */ - optional missing; - BOOST_FOREACH (ContentTimePeriod i, sp) { - typename list::const_iterator j = subs.begin(); - while (j != subs.end() && j->period() != i) { - ++j; - } - if (j == subs.end ()) { - missing = i.from; - } - } - - /* Suggest to our parent decoder that it might want to seek if we haven't got what we're being asked for */ - if (missing) { - _log->log (String::compose ("SD suggests seek to %1", to_string (*missing)), LogEntry::TYPE_DEBUG_DECODE); - maybe_seek (*missing, true); - } - /* Now enough pass() calls will either: - * (a) give us what we want, or - * (b) hit the end of the decoder. - */ - while (!_parent->pass(Decoder::PASS_REASON_SUBTITLE, accurate) && (subs.empty() || (subs.back().period().to < sp.back().to))) {} - - /* Now look for what we wanted in the data we have collected */ - /* XXX: inefficient */ - - list out; - BOOST_FOREACH (ContentTimePeriod i, sp) { - typename list::const_iterator j = subs.begin(); - while (j != subs.end() && j->period() != i) { - ++j; + /* Set any forced appearance */ + if (content()->colour()) { + i.set_colour (*content()->colour()); } - if (j != subs.end()) { - out.push_back (*j); + if (content()->effect_colour()) { + i.set_effect_colour (*content()->effect_colour()); } + i.set_effect (content()->effect()); + i.set_fade_up_time (dcp::Time(content()->fade_in().seconds(), 1000)); + i.set_fade_down_time (dcp::Time(content()->fade_out().seconds(), 1000)); } - /* Discard anything in _decoded_image_subtitles that is outside 5 seconds either side of period */ - - list::iterator i = _decoded_image.begin(); - while (i != _decoded_image.end()) { - list::iterator tmp = i; - ++tmp; - - if ( - i->period().to < (period.from - ContentTime::from_seconds (5)) || - i->period().from > (period.to + ContentTime::from_seconds (5)) - ) { - _decoded_image.erase (i); - } - - i = tmp; - } - - return out; -} - -list -SubtitleDecoder::get_text (ContentTimePeriod period, bool starting, bool accurate) -{ - return get (_decoded_text, _text_during (period, starting), period, accurate); -} - -list -SubtitleDecoder::get_image (ContentTimePeriod period, bool starting, bool accurate) -{ - return get (_decoded_image, _image_during (period, starting), period, accurate); + TextStart (ContentTextSubtitle (from, s)); + _position = from; } void -SubtitleDecoder::seek (ContentTime t, bool) +SubtitleDecoder::emit_text_start (ContentTime from, sub::Subtitle const & subtitle) { - _log->log (String::compose ("SD seek to %1", to_string(t)), LogEntry::TYPE_DEBUG_DECODE); - reset (); - _position.reset (); -} - -void -SubtitleDecoder::reset () -{ - _decoded_text.clear (); - _decoded_image.clear (); -} - -void -SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subtitle) -{ - /* See if our next subtitle needs to be placed on screen by us */ + /* See if our next subtitle needs to be vertically placed on screen by us */ bool needs_placement = false; optional bottom_line; BOOST_FOREACH (sub::Line i, subtitle.lines) { @@ -243,7 +154,7 @@ SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subt case sub::TOP_OF_SCREEN: v_align = dcp::VALIGN_TOP; break; - case sub::CENTRE_OF_SCREEN: + case sub::VERTICAL_CENTRE_OF_SCREEN: v_align = dcp::VALIGN_CENTER; break; case sub::BOTTOM_OF_SCREEN: @@ -255,39 +166,85 @@ SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subt } } - dcp::Effect effect = dcp::NONE; - if (content()->outline()) { - effect = dcp::BORDER; - } else if (content()->shadow()) { - effect = dcp::SHADOW; + dcp::HAlign h_align; + switch (i.horizontal_position.reference) { + case sub::LEFT_OF_SCREEN: + h_align = dcp::HALIGN_LEFT; + break; + case sub::HORIZONTAL_CENTRE_OF_SCREEN: + h_align = dcp::HALIGN_CENTER; + break; + case sub::RIGHT_OF_SCREEN: + h_align = dcp::HALIGN_RIGHT; + break; + default: + h_align = dcp::HALIGN_CENTER; + break; } + /* The idea here (rightly or wrongly) is that we set the appearance based on the + values in the libsub objects, and these are overridden with values from the + content by the other emit_text_start() above. + */ + out.push_back ( dcp::SubtitleString ( string(TEXT_FONT_ID), j.italic, j.bold, j.underline, - /* force the colour to whatever is configured */ - content()->colour(), + j.colour.dcp(), j.font_size.points (72 * 11), 1.0, - dcp::Time (period.from.seconds(), 1000), - dcp::Time (period.to.seconds(), 1000), - 0, - dcp::HALIGN_CENTER, + dcp::Time (from.seconds(), 1000), + /* XXX: hmm; this is a bit ugly (we don't know the to time yet) */ + dcp::Time (), + i.horizontal_position.proportional, + h_align, v_position, v_align, dcp::DIRECTION_LTR, j.text, - effect, - content()->effect_colour(), - dcp::Time (content()->fade_in().seconds(), 1000), - dcp::Time (content()->fade_out().seconds(), 1000) + dcp::NONE, + j.effect_colour.get_value_or(sub::Colour(0, 0, 0)).dcp(), + /* Hack: we should use subtitle.fade_up and subtitle.fade_down here + but the times of these often don't have a frame rate associated + with them so the sub::Time won't convert them to milliseconds without + throwing an exception. Since only DCP subs fill those in (and we don't + use libsub for DCP subs) we can cheat by just putting 0 in here. + */ + dcp::Time (), + dcp::Time () ) ); } } - give_text (period, out); + emit_text_start (from, out); +} + +void +SubtitleDecoder::emit_stop (ContentTime to) +{ + Stop (to); +} + +void +SubtitleDecoder::emit_text (ContentTimePeriod period, list s) +{ + emit_text_start (period.from, s); + emit_stop (period.to); +} + +void +SubtitleDecoder::emit_text (ContentTimePeriod period, sub::Subtitle const & s) +{ + emit_text_start (period.from, s); + emit_stop (period.to); +} + +void +SubtitleDecoder::seek () +{ + _position = ContentTime (); }