2 Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 /** @file test/silence_padding_test.cc
23 * @brief Test the padding (with silence) of a mono source to a 6-channel DCP.
28 #include "lib/ffmpeg_content.h"
30 #include "lib/dcp_content_type.h"
31 #include "lib/ratio.h"
35 #include <dcp/sound_asset.h>
36 #include <dcp/sound_frame.h>
38 #include <dcp/reel_sound_asset.h>
39 #include <dcp/sound_asset_reader.h>
40 #include <boost/test/unit_test.hpp>
43 using std::make_shared;
45 using std::shared_ptr;
46 using boost::lexical_cast;
50 test_silence_padding (int channels)
52 string const film_name = "silence_padding_test_" + lexical_cast<string> (channels);
53 auto film = new_test_film2 (
56 make_shared<FFmpegContent>("test/data/flat_red.png"),
57 make_shared<FFmpegContent>("test/data/staircase.wav")
60 film->set_audio_channels (channels);
61 make_and_verify_dcp (film);
63 boost::filesystem::path path = "build/test";
65 path /= film->dcp_name ();
66 dcp::DCP check (path.string ());
69 auto sound_asset = check.cpls()[0]->reels()[0]->main_sound();
70 BOOST_CHECK (sound_asset);
71 BOOST_CHECK_EQUAL (sound_asset->asset()->channels (), channels);
73 /* Sample index in the DCP */
75 /* DCP sound asset frame */
78 while (n < sound_asset->asset()->intrinsic_duration()) {
79 auto sound_frame = sound_asset->asset()->start_read()->get_frame(frame++);
80 uint8_t const * d = sound_frame->data ();
82 for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->asset()->channels())) {
84 if (sound_asset->asset()->channels() > 0) {
85 /* L should be silent */
86 int const sample = d[i + 1] | (d[i + 2] << 8);
87 BOOST_CHECK_EQUAL (sample, 0);
90 if (sound_asset->asset()->channels() > 1) {
91 /* R should be silent */
92 int const sample = d[i + 4] | (d[i + 5] << 8);
93 BOOST_CHECK_EQUAL (sample, 0);
96 if (sound_asset->asset()->channels() > 2) {
97 /* Mono input so it will appear on centre */
98 int const sample = d[i + 7] | (d[i + 8] << 8);
99 BOOST_CHECK_EQUAL (sample, n);
102 if (sound_asset->asset()->channels() > 3) {
103 /* Lfe should be silent */
104 int const sample = d[i + 10] | (d[i + 11] << 8);
105 BOOST_CHECK_EQUAL (sample, 0);
108 if (sound_asset->asset()->channels() > 4) {
109 /* Ls should be silent */
110 int const sample = d[i + 13] | (d[i + 14] << 8);
111 BOOST_CHECK_EQUAL (sample, 0);
115 if (sound_asset->asset()->channels() > 5) {
116 /* Rs should be silent */
117 int const sample = d[i + 16] | (d[i + 17] << 8);
118 BOOST_CHECK_EQUAL (sample, 0);
128 BOOST_AUTO_TEST_CASE (silence_padding_test)
130 for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
131 test_silence_padding (i);
136 /** Test a situation that used to crash because of a sub-sample rounding confusion
140 BOOST_AUTO_TEST_CASE (silence_padding_test2)
144 auto content = make_shared<FFmpegContent>(TestPaths::private_data() / "cars.mov");
145 auto film = new_test_film2 ("silence_padding_test2", { content }, &cl);
147 film->set_video_frame_rate (24);
148 content->set_trim_start (dcpomatic::ContentTime(4003));
150 make_and_verify_dcp (film);