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/constants.h"
29 #include "lib/ffmpeg_content.h"
31 #include "lib/dcp_content_type.h"
32 #include "lib/ratio.h"
36 #include <dcp/sound_asset.h>
37 #include <dcp/sound_frame.h>
39 #include <dcp/reel_sound_asset.h>
40 #include <dcp/sound_asset_reader.h>
41 #include <boost/test/unit_test.hpp>
44 using std::make_shared;
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 offset = 0; offset < sound_frame->size(); offset += (3 * asset_channels)) {
84 for (auto channel = 0; channel < asset_channels; ++channel) {
85 auto const sample = d[offset + channel * 3 + 1] | (d[offset + channel * 3 + 2] << 8);
87 /* Input should be on centre */
88 BOOST_CHECK_EQUAL(sample, n);
90 /* Everything else should be silent */
91 BOOST_CHECK_EQUAL(sample, 0);
101 BOOST_AUTO_TEST_CASE (silence_padding_test)
103 for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
104 test_silence_padding (i);
109 /** Test a situation that used to crash because of a sub-sample rounding confusion
113 BOOST_AUTO_TEST_CASE (silence_padding_test2)
117 auto content = make_shared<FFmpegContent>(TestPaths::private_data() / "cars.mov");
118 auto film = new_test_film2 ("silence_padding_test2", { content }, &cl);
120 film->set_video_frame_rate (24);
121 content->set_trim_start(film, dcpomatic::ContentTime(4003));
123 make_and_verify_dcp (film);