Cleanup: simplify test.
[dcpomatic.git] / test / silence_padding_test.cc
1 /*
2     Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
3
4     This file is part of DCP-o-matic.
5
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.
10
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.
15
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/>.
18
19 */
20
21
22 /** @file  test/silence_padding_test.cc
23  *  @brief Test the padding (with silence) of a mono source to a 6-channel DCP.
24  *  @ingroup feature
25  */
26
27
28 #include "lib/constants.h"
29 #include "lib/ffmpeg_content.h"
30 #include "lib/film.h"
31 #include "lib/dcp_content_type.h"
32 #include "lib/ratio.h"
33 #include "test.h"
34 #include <dcp/cpl.h>
35 #include <dcp/dcp.h>
36 #include <dcp/sound_asset.h>
37 #include <dcp/sound_frame.h>
38 #include <dcp/reel.h>
39 #include <dcp/reel_sound_asset.h>
40 #include <dcp/sound_asset_reader.h>
41 #include <boost/test/unit_test.hpp>
42
43
44 using std::make_shared;
45 using std::string;
46 using boost::lexical_cast;
47
48
49 static void
50 test_silence_padding (int channels)
51 {
52         string const film_name = "silence_padding_test_" + lexical_cast<string> (channels);
53         auto film = new_test_film2 (
54                 film_name,
55                 {
56                         make_shared<FFmpegContent>("test/data/flat_red.png"),
57                         make_shared<FFmpegContent>("test/data/staircase.wav")
58                 });
59
60         film->set_audio_channels (channels);
61         make_and_verify_dcp (film);
62
63         boost::filesystem::path path = "build/test";
64         path /= film_name;
65         path /= film->dcp_name ();
66         dcp::DCP check (path.string ());
67         check.read ();
68
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);
72
73         /* Sample index in the DCP */
74         int n = 0;
75         /* DCP sound asset frame */
76         int frame = 0;
77
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 ();
81
82                 for (int offset = 0; offset < sound_frame->size(); offset += (3 * asset_channels)) {
83
84                         for (auto channel = 0; channel < asset_channels; ++channel) {
85                                 auto const sample = d[offset + channel * 3 + 1] | (d[offset + channel * 3 + 2] << 8);
86                                 if (channel == 2) {
87                                         /* Input should be on centre */
88                                         BOOST_CHECK_EQUAL(sample, n);
89                                 } else {
90                                         /* Everything else should be silent */
91                                         BOOST_CHECK_EQUAL(sample, 0);
92                                 }
93                         }
94
95                         ++n;
96                 }
97         }
98 }
99
100
101 BOOST_AUTO_TEST_CASE (silence_padding_test)
102 {
103         for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
104                 test_silence_padding (i);
105         }
106 }
107
108
109 /** Test a situation that used to crash because of a sub-sample rounding confusion
110  *  caused by a trim.
111  */
112
113 BOOST_AUTO_TEST_CASE (silence_padding_test2)
114 {
115         Cleanup cl;
116
117         auto content = make_shared<FFmpegContent>(TestPaths::private_data() / "cars.mov");
118         auto film = new_test_film2 ("silence_padding_test2", { content }, &cl);
119
120         film->set_video_frame_rate (24);
121         content->set_trim_start(film, dcpomatic::ContentTime(4003));
122
123         make_and_verify_dcp (film);
124
125         cl.run ();
126 }