2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/examine_content_job.cc
21 * @brief A class to run through content at high speed to find its length.
24 #include "examine_content_job.h"
26 #include "film_state.h"
27 #include "decoder_factory.h"
29 #include "imagemagick_encoder.h"
30 #include "transcoder.h"
33 using namespace boost;
35 ExamineContentJob::ExamineContentJob (shared_ptr<const FilmState> fs, Log* l, shared_ptr<Job> req)
41 ExamineContentJob::~ExamineContentJob ()
46 ExamineContentJob::name () const
48 if (_fs->name().empty ()) {
49 return "Examine content";
52 return String::compose ("Examine content of %1", _fs->name());
56 ExamineContentJob::run ()
58 shared_ptr<FilmState> fs = _fs->state_copy ();
60 /* Decode the content to get an accurate length */
62 shared_ptr<Options> o (new Options ("", "", ""));
63 o->out_size = Size (512, 512);
64 o->apply_crop = false;
68 _decoder = decoder_factory (fs, o, this, _log, true, true);
70 fs->set_length (last_video_frame ());
74 /* Now make thumbnails for it */
79 o.reset (new Options (fs->dir ("thumbs"), ".png", ""));
80 o->out_size = fs->size ();
81 o->apply_crop = false;
82 o->decode_audio = false;
83 o->decode_video_frequency = 128;
84 o->decode_subtitles = true;
85 shared_ptr<ImageMagickEncoder> e (new ImageMagickEncoder (fs, o, _log));
86 Transcoder w (fs, o, this, _log, e);
89 set_state (FINISHED_OK);
91 } catch (std::exception& e) {
95 set_error (e.what ());
96 set_state (FINISHED_ERROR);
102 set_state (FINISHED_OK);
106 ExamineContentJob::last_video_frame () const
108 return _decoder->last_video_frame ();