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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 <boost/filesystem.hpp>
#include "examine_content_job.h"
#include "options.h"
#include "decoder_factory.h"
#include "decoder.h"
#include "imagemagick_encoder.h"
#include "transcoder.h"
#include "log.h"
#include "film.h"
using std::string;
using std::vector;
using boost::shared_ptr;
ExamineContentJob::ExamineContentJob (shared_ptr<Film> f, shared_ptr<Job> req)
: Job (f, req)
{
}
ExamineContentJob::~ExamineContentJob ()
{
}
string
ExamineContentJob::name () const
{
if (_film->name().empty ()) {
return "Examine content";
}
return String::compose ("Examine content of %1", _film->name());
}
void
ExamineContentJob::run ()
{
/* 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 (_film, o, this, true, true);
_decoder->go ();
_film->set_length (_decoder->last_video_frame ());
_film->log()->log (String::compose ("Video length is %1 frames", _decoder->last_video_frame()));
ascend ();
/* Now make thumbnails for it */
descend (0.5);
try {
o.reset (new Options (_film->dir ("thumbs"), ".png", ""));
o->out_size = _film->size ();
o->apply_crop = false;
o->decode_audio = false;
o->decode_video_frequency = 128;
o->decode_subtitles = true;
shared_ptr<ImageMagickEncoder> e (new ImageMagickEncoder (_film, o));
Transcoder w (_film, o, this, e);
w.go ();
} catch (std::exception& e) {
ascend ();
set_progress (1);
set_error (e.what ());
set_state (FINISHED_ERROR);
return;
}
string const tdir = _film->dir ("thumbs");
vector<int> thumbs;
for (boost::filesystem::directory_iterator i = boost::filesystem::directory_iterator (tdir); i != boost::filesystem::directory_iterator(); ++i) {
/* Aah, the sweet smell of progress */
#if BOOST_FILESYSTEM_VERSION == 3
string const l = boost::filesystem::path(*i).leaf().generic_string();
#else
string const l = i->leaf ();
#endif
size_t const d = l.find (".png");
size_t const t = l.find (".tmp");
if (d != string::npos && t == string::npos) {
thumbs.push_back (atoi (l.substr (0, d).c_str()));
}
}
sort (thumbs.begin(), thumbs.end());
_film->set_thumbs (thumbs);
ascend ();
set_progress (1);
set_state (FINISHED_OK);
}
int
ExamineContentJob::last_video_frame () const
{
return _decoder->last_video_frame ();
}
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