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/*
Copyright (C) 2014-2016 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
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 "text_subtitle.h"
#include "cross.h"
#include "exceptions.h"
#include "text_subtitle_content.h"
#include <sub/subrip_reader.h>
#include <sub/ssa_reader.h>
#include <sub/collect.h>
#include <unicode/ucsdet.h>
#include <unicode/ucnv.h>
#include <iostream>
#include "i18n.h"
using std::vector;
using std::cout;
using std::string;
using boost::shared_ptr;
using boost::scoped_array;
using dcp::Data;
TextSubtitle::TextSubtitle (shared_ptr<const TextSubtitleContent> content)
{
Data in (content->path (0));
UErrorCode status = U_ZERO_ERROR;
UCharsetDetector* detector = ucsdet_open (&status);
ucsdet_setText (detector, reinterpret_cast<const char *> (in.data().get()), in.size(), &status);
UCharsetMatch const * match = ucsdet_detect (detector, &status);
char const * in_charset = ucsdet_getName (match, &status);
UConverter* to_utf16 = ucnv_open (in_charset, &status);
/* This is a guess; I think we should be able to encode any input in 4 times its input size */
scoped_array<uint16_t> utf16 (new uint16_t[in.size() * 2]);
int const utf16_len = ucnv_toUChars (
to_utf16, reinterpret_cast<UChar*>(utf16.get()), in.size() * 2,
reinterpret_cast<const char *> (in.data().get()), in.size(),
&status
);
UConverter* to_utf8 = ucnv_open ("UTF-8", &status);
/* Another guess */
scoped_array<char> utf8 (new char[utf16_len * 2]);
ucnv_fromUChars (to_utf8, utf8.get(), utf16_len * 2, reinterpret_cast<UChar*>(utf16.get()), utf16_len, &status);
ucsdet_close (detector);
ucnv_close (to_utf16);
ucnv_close (to_utf8);
sub::Reader* reader = 0;
if (content->path(0).extension() == ".srt" || content->path(0).extension() == ".SRT") {
reader = new sub::SubripReader (utf8.get());
} else if (content->path(0).extension() == ".ssa" || content->path(0).extension() == ".SSA") {
reader = new sub::SSAReader (utf8.get());
}
if (reader) {
_subtitles = sub::collect<vector<sub::Subtitle> > (reader->subtitles ());
}
}
ContentTime
TextSubtitle::length () const
{
if (_subtitles.empty ()) {
return ContentTime ();
}
return ContentTime::from_seconds (_subtitles.back().to.all_as_seconds ());
}
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