2 Copyright (C) 2013 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 #include <boost/test/unit_test.hpp>
21 #include <libdcp/cpl.h>
22 #include <libdcp/dcp.h>
23 #include <libdcp/sound_asset.h>
24 #include <libdcp/sound_frame.h>
25 #include <libdcp/reel.h>
26 #include "lib/sndfile_content.h"
28 #include "lib/dcp_content_type.h"
29 #include "lib/ratio.h"
33 using boost::lexical_cast;
34 using boost::shared_ptr;
36 static void test_silence_padding (int channels)
38 string const film_name = "silence_padding_test_" + lexical_cast<string> (channels);
39 shared_ptr<Film> film = new_test_film (film_name);
40 film->set_dcp_content_type (DCPContentType::from_isdcf_name ("FTR"));
41 film->set_container (Ratio::from_id ("185"));
42 film->set_name (film_name);
44 shared_ptr<SndfileContent> content (new SndfileContent (film, "test/data/staircase.wav"));
45 film->examine_and_add_content (content);
48 film->set_audio_channels (channels);
52 boost::filesystem::path path = "build/test";
54 path /= film->dcp_name ();
55 libdcp::DCP check (path.string ());
58 shared_ptr<const libdcp::SoundAsset> sound_asset = check.cpls().front()->reels().front()->main_sound ();
59 BOOST_CHECK (sound_asset);
60 BOOST_CHECK (sound_asset->channels () == channels);
62 /* Sample index in the DCP */
64 /* DCP sound asset frame */
67 while (n < sound_asset->intrinsic_duration()) {
68 shared_ptr<const libdcp::SoundFrame> sound_frame = sound_asset->get_frame (frame++);
69 uint8_t const * d = sound_frame->data ();
71 for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->channels())) {
73 if (sound_asset->channels() > 0) {
74 /* L should be silent */
75 int const sample = d[i + 0] | (d[i + 1] << 8);
76 BOOST_CHECK_EQUAL (sample, 0);
79 if (sound_asset->channels() > 1) {
80 /* R should be silent */
81 int const sample = d[i + 2] | (d[i + 3] << 8);
82 BOOST_CHECK_EQUAL (sample, 0);
85 if (sound_asset->channels() > 2) {
86 /* Mono input so it will appear on centre */
87 int const sample = d[i + 7] | (d[i + 8] << 8);
88 BOOST_CHECK_EQUAL (sample, n);
91 if (sound_asset->channels() > 3) {
92 /* Lfe should be silent */
93 int const sample = d[i + 9] | (d[i + 10] << 8);
94 BOOST_CHECK_EQUAL (sample, 0);
97 if (sound_asset->channels() > 4) {
98 /* Ls should be silent */
99 int const sample = d[i + 11] | (d[i + 12] << 8);
100 BOOST_CHECK_EQUAL (sample, 0);
104 if (sound_asset->channels() > 5) {
105 /* Rs should be silent */
106 int const sample = d[i + 13] | (d[i + 14] << 8);
107 BOOST_CHECK_EQUAL (sample, 0);
116 BOOST_AUTO_TEST_CASE (silence_padding_test)
118 for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
119 test_silence_padding (i);