/*
- Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2016 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
*/
#include "ffmpeg_subtitle_stream.h"
+#include "raw_convert.h"
+#include <libxml++/libxml++.h>
+#include <boost/foreach.hpp>
+#include <iostream>
+
+using std::string;
+using std::map;
+using std::list;
+using std::cout;
/** Construct a SubtitleStream from a value returned from to_string().
* @param t String returned from to_string().
* @param v State file version.
*/
-FFmpegSubtitleStream::FFmpegSubtitleStream (cxml::ConstNodePtr node)
+FFmpegSubtitleStream::FFmpegSubtitleStream (cxml::ConstNodePtr node, int version)
: FFmpegStream (node)
{
-
+ if (version == 32) {
+ BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Period")) {
+ /* In version 32 we assumed that from times were unique, so they were
+ used as identifiers. All subtitles were image subtitles.
+ */
+ add_image_subtitle (
+ raw_convert<string> (i->string_child ("From")),
+ ContentTimePeriod (
+ ContentTime (i->number_child<ContentTime::Type> ("From")),
+ ContentTime (i->number_child<ContentTime::Type> ("To"))
+ )
+ );
+ }
+ } else {
+ /* In version 33 we use a hash of various parts of the subtitle as the id.
+ <Subtitle> was initially used for image subtitles; later we have
+ <ImageSubtitle> and <TextSubtitle>
+ */
+ BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Subtitle")) {
+ add_image_subtitle (
+ raw_convert<string> (i->string_child ("Id")),
+ ContentTimePeriod (
+ ContentTime (i->number_child<ContentTime::Type> ("From")),
+ ContentTime (i->number_child<ContentTime::Type> ("To"))
+ )
+ );
+ }
+
+ BOOST_FOREACH (cxml::NodePtr i, node->node_children ("ImageSubtitle")) {
+ add_image_subtitle (
+ raw_convert<string> (i->string_child ("Id")),
+ ContentTimePeriod (
+ ContentTime (i->number_child<ContentTime::Type> ("From")),
+ ContentTime (i->number_child<ContentTime::Type> ("To"))
+ )
+ );
+ }
+
+ BOOST_FOREACH (cxml::NodePtr i, node->node_children ("TextSubtitle")) {
+ add_text_subtitle (
+ raw_convert<string> (i->string_child ("Id")),
+ ContentTimePeriod (
+ ContentTime (i->number_child<ContentTime::Type> ("From")),
+ ContentTime (i->number_child<ContentTime::Type> ("To"))
+ )
+ );
+ }
+ }
}
void
FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
{
FFmpegStream::as_xml (root);
+
+ as_xml (root, _image_subtitles, "ImageSubtitle");
+ as_xml (root, _text_subtitles, "TextSubtitle");
+}
+
+void
+FFmpegSubtitleStream::as_xml (xmlpp::Node* root, PeriodMap const & subs, string node_name) const
+{
+ for (PeriodMap::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ xmlpp::Node* node = root->add_child (node_name);
+ node->add_child("Id")->add_child_text (i->first);
+ node->add_child("From")->add_child_text (raw_convert<string> (i->second.from.get ()));
+ node->add_child("To")->add_child_text (raw_convert<string> (i->second.to.get ()));
+ }
+}
+
+void
+FFmpegSubtitleStream::add_image_subtitle (string id, ContentTimePeriod period)
+{
+ DCPOMATIC_ASSERT (_image_subtitles.find (id) == _image_subtitles.end ());
+ _image_subtitles[id] = period;
+}
+
+void
+FFmpegSubtitleStream::add_text_subtitle (string id, ContentTimePeriod period)
+{
+ DCPOMATIC_ASSERT (_text_subtitles.find (id) == _text_subtitles.end ());
+ _text_subtitles[id] = period;
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::image_subtitles_during (ContentTimePeriod period, bool starting) const
+{
+ return subtitles_during (period, starting, _image_subtitles);
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::text_subtitles_during (ContentTimePeriod period, bool starting) const
+{
+ return subtitles_during (period, starting, _text_subtitles);
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::subtitles_during (ContentTimePeriod period, bool starting, PeriodMap const & subs) const
+{
+ list<ContentTimePeriod> d;
+
+ /* XXX: inefficient */
+ for (map<string, ContentTimePeriod>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ if ((starting && period.contains (i->second.from)) || (!starting && period.overlaps (i->second))) {
+ d.push_back (i->second);
+ }
+ }
+
+ return d;
+}
+
+ContentTime
+FFmpegSubtitleStream::find_subtitle_to (string id) const
+{
+ PeriodMap::const_iterator i = _image_subtitles.find (id);
+ if (i != _image_subtitles.end ()) {
+ return i->second.to;
+ }
+
+ i = _text_subtitles.find (id);
+ DCPOMATIC_ASSERT (i != _text_subtitles.end ());
+ return i->second.to;
+}
+
+/** Add some offset to all the times in the stream */
+void
+FFmpegSubtitleStream::add_offset (ContentTime offset)
+{
+ for (PeriodMap::iterator i = _image_subtitles.begin(); i != _image_subtitles.end(); ++i) {
+ i->second.from += offset;
+ i->second.to += offset;
+ }
+
+ for (PeriodMap::iterator i = _text_subtitles.begin(); i != _text_subtitles.end(); ++i) {
+ i->second.from += offset;
+ i->second.to += offset;
+ }
}