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.
23 using boost::shared_ptr;
25 Combiner::Combiner (shared_ptr<Log> log)
26 : TimedVideoProcessor (log)
31 /** Process video for the left half of the frame.
32 * Subtitle parameter will be ignored.
33 * @param image Frame image.
36 Combiner::process_video (shared_ptr<const Image> image, bool, shared_ptr<Subtitle>, double)
38 _image.reset (new SimpleImage (image));
41 /** Process video for the right half of the frame.
42 * @param image Frame image.
43 * @param sub Subtitle (which will be put onto the whole frame)
46 Combiner::process_video_b (shared_ptr<const Image> image, bool, shared_ptr<Subtitle> sub, double t)
49 /* It's possible for filters in the A-side to mean that we get a B frame
50 before any A; just skip the B frame in that case. This at least prevents
51 a crash, but may not be right.
56 /* Copy the right half of this image into our _image */
57 /* XXX: this should probably be in the Image class */
58 for (int i = 0; i < image->components(); ++i) {
59 int const line_size = image->line_size()[i];
60 int const half_line_size = line_size / 2;
62 uint8_t* p = _image->data()[i];
63 uint8_t* q = image->data()[i];
65 for (int j = 0; j < image->lines (i); ++j) {
66 memcpy (p + half_line_size, q + half_line_size, half_line_size);
67 p += _image->stride()[i];
68 q += image->stride()[i];
72 Video (_image, false, sub, t);