X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fsubtitle_decoder.cc;h=39c36415a189b3c996284d8e6ed7c18344e74694;hb=35e5de23b21a1fc9788fadd9ecd8beae9cfc18e3;hp=f8f179587f6be35d85b10f0ff848a79d13639ef7;hpb=9053a8274c32c57041a1f8a7fdb0206abbbd4f50;p=dcpomatic.git diff --git a/src/lib/subtitle_decoder.cc b/src/lib/subtitle_decoder.cc index f8f179587..39c36415a 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. @@ -21,14 +21,18 @@ #include "subtitle_decoder.h" #include "subtitle_content.h" #include "util.h" +#include "log.h" +#include "compose.hpp" #include #include #include +#include #include using std::list; using std::cout; using std::string; +using std::min; using boost::shared_ptr; using boost::optional; using boost::function; @@ -36,110 +40,67 @@ using boost::function; SubtitleDecoder::SubtitleDecoder ( Decoder* parent, shared_ptr c, - function (ContentTimePeriod, bool)> image_during, - function (ContentTimePeriod, bool)> text_during + shared_ptr log, + ContentTime first ) - : _parent (parent) + : 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)); + ImageStart (ContentImageSubtitle (from, image, rect)); } void -SubtitleDecoder::give_text (ContentTimePeriod period, list s) +SubtitleDecoder::emit_text_start (ContentTime from, list s) { - _decoded_text.push_back (ContentTextSubtitle (period, s)); -} - -/** @param sp Full periods of subtitles that are showing or starting during the specified period */ -template -list -SubtitleDecoder::get (list const & subs, list const & sp, ContentTimePeriod period, bool starting, bool accurate) -{ - if (sp.empty ()) { - /* Nothing in this period */ - return list (); - } - - /* Seek if what we want is before what we have, or a more than a little bit after */ - if (subs.empty() || sp.back().to < subs.front().period().from || sp.front().from > (subs.back().period().to + ContentTime::from_seconds (1))) { - _parent->seek (sp.front().from, 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))) {} + 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); - /* Now look for what we wanted in the data we have collected */ - /* XXX: inefficient */ - - list out; - for (typename list::const_iterator i = subs.begin(); i != subs.end(); ++i) { - if ((starting && period.contains (i->period().from)) || (!starting && period.overlaps (i->period ()))) { - out.push_back (*i); + /* Set any forced appearance */ + if (content()->colour()) { + i.set_colour (*content()->colour()); } - } - - /* 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); + if (content()->effect_colour()) { + i.set_effect_colour (*content()->effect_colour()); + } + if (content()->effect()) { + i.set_effect (*content()->effect()); + } + if (content()->fade_in()) { + i.set_fade_up_time (dcp::Time(content()->fade_in()->seconds(), 1000)); + } + if (content()->fade_out()) { + i.set_fade_down_time (dcp::Time(content()->fade_out()->seconds(), 1000)); } - - i = tmp; } - return out; -} - -list -SubtitleDecoder::get_text (ContentTimePeriod period, bool starting, bool accurate) -{ - return get (_decoded_text, _text_during (period, starting), period, starting, accurate); -} - -list -SubtitleDecoder::get_image (ContentTimePeriod period, bool starting, bool accurate) -{ - return get (_decoded_image, _image_during (period, starting), period, starting, accurate); + TextStart (ContentTextSubtitle (from, s)); + _position = from; } void -SubtitleDecoder::seek (ContentTime, bool) +SubtitleDecoder::emit_text_start (ContentTime from, sub::Subtitle const & subtitle) { - _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) { @@ -152,12 +113,24 @@ SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subt } } + /* Find the lowest proportional position */ + optional lowest_proportional; + BOOST_FOREACH (sub::Line i, subtitle.lines) { + if (i.vertical_position.proportional) { + if (!lowest_proportional) { + lowest_proportional = i.vertical_position.proportional; + } else { + lowest_proportional = min (lowest_proportional.get(), i.vertical_position.proportional.get()); + } + } + } + list out; BOOST_FOREACH (sub::Line i, subtitle.lines) { BOOST_FOREACH (sub::Block j, i.blocks) { if (!j.font_size.specified()) { - /* Fallback default font size if none other has been specified */ + /* Fallback default font size if no other has been specified */ j.font_size.set_points (48); } @@ -165,20 +138,29 @@ SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subt dcp::VAlign v_align; if (needs_placement) { DCPOMATIC_ASSERT (i.vertical_position.line); - /* This 0.053 is an arbitrary value to lift the bottom sub off the bottom + /* This 1.015 is an arbitrary value to lift the bottom sub off the bottom of the screen a bit to a pleasing degree. */ - v_position = 1.015 - (1 + bottom_line.get() - i.vertical_position.line.get()) * 1.2 * j.font_size.proportional (72 * 11); + v_position = 1.015 - + (1 + bottom_line.get() - i.vertical_position.line.get()) + * 1.2 * content()->line_spacing() * content()->y_scale() * j.font_size.proportional (72 * 11); + v_align = dcp::VALIGN_TOP; } else { DCPOMATIC_ASSERT (i.vertical_position.proportional); DCPOMATIC_ASSERT (i.vertical_position.reference); v_position = i.vertical_position.proportional.get(); + + if (lowest_proportional) { + /* Adjust line spacing */ + v_position = ((v_position - lowest_proportional.get()) * content()->line_spacing()) + lowest_proportional.get(); + } + switch (i.vertical_position.reference.get()) { 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: @@ -190,31 +172,85 @@ SubtitleDecoder::give_text (ContentTimePeriod period, sub::Subtitle const & subt } } + 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, - /* force the colour to whatever is configured */ - content()->colour(), + j.underline, + 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, - content()->outline() ? dcp::BORDER : dcp::NONE, - content()->outline_colour(), - dcp::Time (0, 1000), - dcp::Time (0, 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 (); }