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.
21 #include <boost/shared_ptr.hpp>
22 #include <sigc++/bind.h>
23 #include "ab_transcoder.h"
30 #include "decoder_factory.h"
32 /** @file src/ab_transcoder.cc
33 * @brief A transcoder which uses one Film for the left half of the screen, and a different one
34 * for the right half (to facilitate A/B comparisons of settings)
38 using namespace boost;
40 /** @param a Film to use for the left half of the screen.
41 * @param b Film to use for the right half of the screen.
43 * @param j Job that we are associated with.
44 * @param e Encoder to use.
47 ABTranscoder::ABTranscoder (
48 shared_ptr<Film> a, shared_ptr<Film> b, shared_ptr<const Options> o, Job* j, shared_ptr<Encoder> e)
56 _da = decoder_factory (_film_a, o, j);
57 _db = decoder_factory (_film_b, o, j);
59 _da->Video.connect (sigc::bind (sigc::mem_fun (*this, &ABTranscoder::process_video), 0));
60 _db->Video.connect (sigc::bind (sigc::mem_fun (*this, &ABTranscoder::process_video), 1));
61 _da->Audio.connect (sigc::mem_fun (*e, &Encoder::process_audio));
64 ABTranscoder::~ABTranscoder ()
70 ABTranscoder::process_video (shared_ptr<Image> yuv, int frame, shared_ptr<Subtitle> sub, int index)
73 /* Keep this image around until we get the other half */
76 /* Copy the right half of yuv into _image */
77 for (int i = 0; i < yuv->components(); ++i) {
78 int const line_size = yuv->line_size()[i];
79 int const half_line_size = line_size / 2;
80 int const stride = yuv->stride()[i];
82 uint8_t* p = _image->data()[i];
83 uint8_t* q = yuv->data()[i];
85 for (int j = 0; j < yuv->lines (i); ++j) {
86 memcpy (p + half_line_size, q + half_line_size, half_line_size);
92 /* And pass it to the encoder */
93 _encoder->process_video (_image, frame, sub);
104 _encoder->process_begin (_da->audio_channel_layout());
105 _da->process_begin ();
106 _db->process_begin ();
109 bool const a = _da->pass ();
110 bool const b = _db->pass ();
117 _encoder->process_end ();