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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/examine_content_job.cc
* @brief A class to run through content at high speed to find its length.
*/
#include "examine_content_job.h"
#include "options.h"
#include "film_state.h"
#include "decoder_factory.h"
#include "decoder.h"
#include "imagemagick_encoder.h"
#include "transcoder.h"
#include "log.h"
using namespace std;
using namespace boost;
ExamineContentJob::ExamineContentJob (shared_ptr<const FilmState> fs, Log* l, shared_ptr<Job> req)
: Job (fs, l, req)
{
}
ExamineContentJob::~ExamineContentJob ()
{
}
string
ExamineContentJob::name () const
{
if (_fs->name().empty ()) {
return "Examine content";
}
return String::compose ("Examine content of %1", _fs->name());
}
void
ExamineContentJob::run ()
{
shared_ptr<FilmState> fs = _fs->state_copy ();
/* Decode the content to get an accurate length */
shared_ptr<Options> o (new Options ("", "", ""));
o->out_size = Size (512, 512);
o->apply_crop = false;
descend (0.5);
_decoder = decoder_factory (fs, o, this, _log, true, true);
_decoder->go ();
fs->set_length (_decoder->last_video_frame ());
_log->log (String::compose ("Video length is %1 frames", _decoder->last_video_frame()));
_log->log (String::compose ("%1ms of audio to discard", _decoder->audio_to_discard()));
ascend ();
/* Now make thumbnails for it */
descend (0.5);
try {
o.reset (new Options (fs->dir ("thumbs"), ".png", ""));
o->out_size = fs->size ();
o->apply_crop = false;
o->decode_audio = false;
o->decode_video_frequency = 128;
o->decode_subtitles = true;
shared_ptr<ImageMagickEncoder> e (new ImageMagickEncoder (fs, o, _log));
Transcoder w (fs, o, this, _log, e);
w.go ();
} catch (std::exception& e) {
ascend ();
set_progress (1);
set_error (e.what ());
set_state (FINISHED_ERROR);
return;
}
ascend ();
set_progress (1);
set_state (FINISHED_OK);
}
int
ExamineContentJob::last_video_frame () const
{
return _decoder->last_video_frame ();
}
int
ExamineContentJob::audio_to_discard () const
{
return _decoder->audio_to_discard ();
}
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