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/*
Copyright (C) 2012-2015 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.
*/
/** @file src/transcode_job.cc
* @brief A job which transcodes from one format to another.
*/
#include <iostream>
#include <iomanip>
#include "transcode_job.h"
#include "film.h"
#include "transcoder.h"
#include "log.h"
#include "safe_stringstream.h"
#include "i18n.h"
#define LOG_GENERAL_NC(...) _film->log()->log (__VA_ARGS__, Log::TYPE_GENERAL);
#define LOG_ERROR_NC(...) _film->log()->log (__VA_ARGS__, Log::TYPE_ERROR);
using std::string;
using std::fixed;
using std::setprecision;
using std::cout;
using boost::shared_ptr;
/** @param s Film to use.
*/
TranscodeJob::TranscodeJob (shared_ptr<const Film> film)
: Job (film)
{
}
string
TranscodeJob::name () const
{
return String::compose (_("Transcode %1"), _film->name());
}
string
TranscodeJob::json_name () const
{
return N_("transcode");
}
void
TranscodeJob::run ()
{
try {
LOG_GENERAL_NC (N_("Transcode job starting"));
_transcoder.reset (new Transcoder (_film, shared_from_this ()));
_transcoder->go ();
set_progress (1);
set_state (FINISHED_OK);
LOG_GENERAL_NC (N_("Transcode job completed successfully"));
_transcoder.reset ();
} catch (...) {
_transcoder.reset ();
throw;
}
}
string
TranscodeJob::status () const
{
if (!_transcoder) {
return Job::status ();
}
float const fps = _transcoder->current_encoding_rate ();
if (fps == 0) {
return Job::status ();
}
SafeStringStream s;
s << Job::status ();
if (!finished () && !_transcoder->finishing ()) {
/// TRANSLATORS: fps here is an abbreviation for frames per second
s << "; " << fixed << setprecision (1) << fps << " " << _("fps");
}
return s.str ();
}
/** @return Approximate remaining time in seconds */
int
TranscodeJob::remaining_time () const
{
/* _transcoder might be destroyed by the job-runner thread */
shared_ptr<Transcoder> t = _transcoder;
if (!t) {
return 0;
}
float fps = t->current_encoding_rate ();
if (fps == 0) {
return 0;
}
/* Compute approximate proposed length here, as it's only here that we need it */
return (_film->length().frames (_film->video_frame_rate ()) - t->video_frames_out()) / fps;
}
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