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 "decoder_factory.h"
28 #include "imagemagick_encoder.h"
29 #include "transcoder.h"
34 using namespace boost;
36 ExamineContentJob::ExamineContentJob (shared_ptr<Film> f, shared_ptr<Job> req)
42 ExamineContentJob::~ExamineContentJob ()
47 ExamineContentJob::name () const
49 if (_film->name().empty ()) {
50 return "Examine content";
53 return String::compose ("Examine content of %1", _film->name());
57 ExamineContentJob::run ()
59 /* Decode the content to get an accurate length */
61 shared_ptr<Options> o (new Options ("", "", ""));
62 o->out_size = Size (512, 512);
63 o->apply_crop = false;
67 _decoder = decoder_factory (_film, o, this, true, true);
70 _film->set_length (_decoder->last_video_frame ());
72 _film->log()->log (String::compose ("Video length is %1 frames", _decoder->last_video_frame()));
76 /* Now make thumbnails for it */
81 o.reset (new Options (_film->dir ("thumbs"), ".png", ""));
82 o->out_size = _film->size ();
83 o->apply_crop = false;
84 o->decode_audio = false;
85 o->decode_video_frequency = 128;
86 o->decode_subtitles = true;
87 shared_ptr<ImageMagickEncoder> e (new ImageMagickEncoder (_film, o));
88 Transcoder w (_film, o, this, e);
91 } catch (std::exception& e) {
95 set_error (e.what ());
96 set_state (FINISHED_ERROR);
103 set_state (FINISHED_OK);
107 ExamineContentJob::last_video_frame () const
109 return _decoder->last_video_frame ();