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/*
Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "string_text_file_content.h"
#include "string_text_file_decoder.h"
#include "text_content.h"
#include "text_decoder.h"
#include <dcp/text_string.h>
#include <iostream>
using std::cout;
using std::make_shared;
using std::shared_ptr;
using std::string;
using std::vector;
using namespace dcpomatic;
StringTextFileDecoder::StringTextFileDecoder (shared_ptr<const Film> film, shared_ptr<const StringTextFileContent> content)
: Decoder (film)
, StringTextFile (content)
, _next (0)
{
text.push_back (make_shared<TextDecoder>(this, content->only_text()));
update_position();
}
void
StringTextFileDecoder::seek (ContentTime time, bool accurate)
{
/* It's worth back-tracking a little here as decoding is cheap and it's nice if we don't miss
too many subtitles when seeking.
*/
time -= ContentTime::from_seconds (5);
if (time < ContentTime()) {
time = ContentTime();
}
Decoder::seek (time, accurate);
_next = 0;
while (_next < _subtitles.size() && ContentTime::from_seconds (_subtitles[_next].from.all_as_seconds ()) < time) {
++_next;
}
update_position();
}
bool
StringTextFileDecoder::pass ()
{
if (_next >= _subtitles.size ()) {
return true;
}
ContentTimePeriod const p = content_time_period (_subtitles[_next]);
only_text()->emit_plain (p, _subtitles[_next]);
++_next;
update_position();
return false;
}
ContentTimePeriod
StringTextFileDecoder::content_time_period (sub::Subtitle s) const
{
return ContentTimePeriod (
ContentTime::from_seconds (s.from.all_as_seconds()),
ContentTime::from_seconds (s.to.all_as_seconds())
);
}
void
StringTextFileDecoder::update_position ()
{
if (_next < _subtitles.size()) {
only_text()->maybe_set_position(
ContentTime::from_seconds(_subtitles[_next].from.all_as_seconds())
);
}
}
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