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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.
*/
/** @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 "format.h"
#include "transcoder.h"
#include "log.h"
#include "encoder.h"
using std::string;
using std::stringstream;
using std::fixed;
using std::setprecision;
using boost::shared_ptr;
/** @param s Film to use.
* @param o Options.
* @param req Job that must be completed before this job is run.
*/
TranscodeJob::TranscodeJob (shared_ptr<Film> f, shared_ptr<const DecodeOptions> od, shared_ptr<const EncodeOptions> oe, shared_ptr<Job> req)
: Job (f, req)
, _decode_opt (od)
, _encode_opt (oe)
{
}
string
TranscodeJob::name () const
{
return String::compose ("Transcode %1", _film->name());
}
void
TranscodeJob::run ()
{
try {
_film->log()->log ("Transcode job starting");
_film->log()->log (String::compose ("Audio delay is %1ms", _film->audio_delay()));
_encoder.reset (new Encoder (_film, _encode_opt));
Transcoder w (_film, _decode_opt, this, _encoder);
w.go ();
set_progress (1);
set_state (FINISHED_OK);
_film->log()->log ("Transcode job completed successfully");
} catch (std::exception& e) {
set_progress (1);
set_state (FINISHED_ERROR);
_film->log()->log (String::compose ("Transcode job failed (%1)", e.what()));
throw;
}
}
string
TranscodeJob::status () const
{
if (!_encoder) {
return "0%";
}
if (_encoder->skipping () && !finished ()) {
return "skipping already-encoded frames";
}
float const fps = _encoder->current_frames_per_second ();
if (fps == 0) {
return Job::status ();
}
stringstream s;
s << Job::status ();
if (!finished ()) {
s << "; " << fixed << setprecision (1) << fps << " frames per second";
}
return s.str ();
}
int
TranscodeJob::remaining_time () const
{
float fps = _encoder->current_frames_per_second ();
if (fps == 0) {
return 0;
}
if (!_film->dcp_length()) {
return 0;
}
/* We assume that dcp_length() is valid, if it is set */
SourceFrame const left = _film->dcp_trim_start() + _film->dcp_length().get() - _encoder->video_frame();
return left / fps;
}
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