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 /** @defgroup feature Tests of features */
24 /** @file test/audio_delay_test.cc
25 * @brief Test encode using some FFmpegContents which have audio delays.
28 * The output is checked algorithmically using knowledge of the input.
32 #include "lib/audio_content.h"
33 #include "lib/dcp_content_type.h"
34 #include "lib/ffmpeg_content.h"
36 #include "lib/ratio.h"
40 #include <dcp/reel_sound_asset.h>
41 #include <dcp/sound_asset.h>
42 #include <dcp/sound_asset_reader.h>
43 #include <dcp/sound_frame.h>
44 #include <boost/test/unit_test.hpp>
49 using std::make_shared;
50 using std::shared_ptr;
52 using boost::lexical_cast;
56 void test_audio_delay (int delay_in_ms)
58 string const film_name = "audio_delay_test_" + lexical_cast<string> (delay_in_ms);
59 auto content = make_shared<FFmpegContent>("test/data/staircase.wav");
60 auto film = new_test_film2 (film_name, { content });
62 content->audio->set_delay (delay_in_ms);
64 make_and_verify_dcp (film, { dcp::VerificationNote::Code::MISSING_CPL_METADATA });
66 boost::filesystem::path path = "build/test";
68 path /= film->dcp_name ();
69 dcp::DCP check (path.string ());
72 auto sound_asset = check.cpls().front()->reels().front()->main_sound ();
73 BOOST_CHECK (sound_asset);
75 /* Sample index in the DCP */
77 /* DCP sound asset frame */
80 int const delay_in_frames = delay_in_ms * 48000 / 1000;
82 while (n < sound_asset->asset()->intrinsic_duration()) {
83 auto sound_frame = sound_asset->asset()->start_read()->get_frame (frame++);
84 uint8_t const * d = sound_frame->data ();
86 for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->asset()->channels())) {
88 /* Mono input so it will appear on centre */
89 int const sample = d[i + 7] | (d[i + 8] << 8);
91 int delayed = n - delay_in_frames;
92 if (delayed < 0 || delayed >= 4800) {
96 BOOST_REQUIRE_EQUAL (sample, delayed);
103 /* Test audio delay when specified in a piece of audio content */
104 BOOST_AUTO_TEST_CASE (audio_delay_test)
106 test_audio_delay (0);
107 test_audio_delay (42);
108 test_audio_delay (-66);