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/*
Copyright (C) 2012 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 "subtitle_asset.h"
using namespace std;
using namespace boost;
using namespace libdcp;
SubtitleAsset::SubtitleAsset (string directory, string xml)
: Asset (directory, xml)
, XMLFile (path().string(), "DCSubtitle")
{
_subtitle_id = string_node ("SubtitleID");
_movie_title = string_node ("MovieTitle");
_reel_number = int64_node ("ReelNumber");
_language = string_node ("Language");
ignore_node ("LoadFont");
list<shared_ptr<FontNode> > font_nodes = sub_nodes<FontNode> ("Font");
_load_font_nodes = sub_nodes<LoadFontNode> ("LoadFont");
/* Now make Subtitle objects to represent the raw XML nodes
in a sane way.
*/
list<shared_ptr<FontNode> > current_font_nodes;
for (list<shared_ptr<FontNode> >::iterator i = font_nodes.begin(); i != font_nodes.end(); ++i) {
examine_font_node (*i, current_font_nodes);
}
}
void
SubtitleAsset::examine_font_node (shared_ptr<FontNode> font_node, list<shared_ptr<FontNode> >& current_font_nodes)
{
current_font_nodes.push_back (font_node);
for (list<shared_ptr<SubtitleNode> >::iterator j = font_node->subtitle_nodes.begin(); j != font_node->subtitle_nodes.end(); ++j) {
for (list<shared_ptr<TextNode> >::iterator k = (*j)->text_nodes.begin(); k != (*j)->text_nodes.end(); ++k) {
_subtitles.push_back (
shared_ptr<Subtitle> (
new Subtitle (
font_id_to_name (id_from_font_nodes (current_font_nodes)),
size_from_font_nodes (current_font_nodes),
(*j)->in,
(*j)->out,
(*k)->v_position,
(*k)->text
)
)
);
}
}
for (list<shared_ptr<FontNode> >::iterator j = font_node->font_nodes.begin(); j != font_node->font_nodes.end(); ++j) {
examine_font_node (*j, current_font_nodes);
}
current_font_nodes.pop_back ();
}
string
SubtitleAsset::id_from_font_nodes (list<shared_ptr<FontNode> > const & font_nodes) const
{
for (list<shared_ptr<FontNode> >::const_reverse_iterator i = font_nodes.rbegin(); i != font_nodes.rend(); ++i) {
if (!(*i)->id.empty ()) {
return (*i)->id;
}
}
return "";
}
int
SubtitleAsset::size_from_font_nodes (list<shared_ptr<FontNode> > const & font_nodes) const
{
for (list<shared_ptr<FontNode> >::const_reverse_iterator i = font_nodes.rbegin(); i != font_nodes.rend(); ++i) {
if ((*i)->size != 0) {
return (*i)->size;
}
}
return 0;
}
FontNode::FontNode (xmlpp::Node const * node)
: XMLNode (node)
{
id = string_attribute ("Id");
size = optional_int64_attribute ("Size");
subtitle_nodes = sub_nodes<SubtitleNode> ("Subtitle");
font_nodes = sub_nodes<FontNode> ("Font");
}
LoadFontNode::LoadFontNode (xmlpp::Node const * node)
: XMLNode (node)
{
id = string_attribute ("Id");
uri = string_attribute ("URI");
}
SubtitleNode::SubtitleNode (xmlpp::Node const * node)
: XMLNode (node)
{
in = time_attribute ("TimeIn");
out = time_attribute ("TimeOut");
text_nodes = sub_nodes<TextNode> ("Text");
}
TextNode::TextNode (xmlpp::Node const * node)
: XMLNode (node)
{
text = content ();
v_position = float_attribute ("VPosition");
}
list<shared_ptr<Subtitle> >
SubtitleAsset::subtitles_at (Time t) const
{
list<shared_ptr<Subtitle> > s;
for (list<shared_ptr<Subtitle> >::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
if ((*i)->in() <= t && t <= (*i)->out ()) {
s.push_back (*i);
}
}
return s;
}
std::string
SubtitleAsset::font_id_to_name (string id) const
{
list<shared_ptr<LoadFontNode> >::const_iterator i = _load_font_nodes.begin();
while (i != _load_font_nodes.end() && (*i)->id != id) {
++i;
}
if (i == _load_font_nodes.end ()) {
return "";
}
if ((*i)->uri == "arial.ttf") {
return "Arial";
}
return "";
}
Subtitle::Subtitle (
std::string font,
int size,
Time in,
Time out,
float v_position,
std::string text
)
: _font (font)
, _size (size)
, _in (in)
, _out (out)
, _v_position (v_position)
, _text (text)
{
}
int
Subtitle::size_in_pixels (int screen_height) const
{
/* Size in the subtitle file is given in points as if the screen
height is 11 inches, so a 72pt font would be 1/11th of the screen
height.
*/
return _size * screen_height / (11 * 72);
}
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