test/silence_padding_test.cc

   1 /*
   2     Copyright (C) 2013-2014 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 /** @file  test/silence_padding_test.cc
  22  *  @brief Test the padding (with silence) of a mono source to a 6-channel DCP.
  23  *  @ingroup feature
  24  */
  25
  26 #include "lib/ffmpeg_content.h"
  27 #include "lib/film.h"
  28 #include "lib/dcp_content_type.h"
  29 #include "lib/ratio.h"
  30 #include "test.h"
  31 #include <dcp/cpl.h>
  32 #include <dcp/dcp.h>
  33 #include <dcp/sound_asset.h>
  34 #include <dcp/sound_frame.h>
  35 #include <dcp/reel.h>
  36 #include <dcp/reel_sound_asset.h>
  37 #include <dcp/sound_asset_reader.h>
  38 #include <boost/test/unit_test.hpp>
  39
  40 using std::make_shared;
  41 using std::string;
  42 using std::shared_ptr;
  43 using boost::lexical_cast;
  44
  45 static void
  46 test_silence_padding (int channels)
  47 {
  48         string const film_name = "silence_padding_test_" + lexical_cast<string> (channels);
  49         auto film = new_test_film (film_name);
  50         film->set_dcp_content_type (DCPContentType::from_isdcf_name ("FTR"));
  51         film->set_container (Ratio::from_id ("185"));
  52         film->set_name (film_name);
  53
  54         auto content = make_shared<FFmpegContent>("test/data/staircase.wav");
  55         film->examine_and_add_content (content);
  56         BOOST_REQUIRE (!wait_for_jobs());
  57
  58         film->set_audio_channels (channels);
  59         film->make_dcp ();
  60         BOOST_REQUIRE (!wait_for_jobs());
  61
  62         boost::filesystem::path path = "build/test";
  63         path /= film_name;
  64         path /= film->dcp_name ();
  65         dcp::DCP check (path.string ());
  66         check.read ();
  67
  68         auto sound_asset = check.cpls()[0]->reels()[0]->main_sound();
  69         BOOST_CHECK (sound_asset);
  70         BOOST_CHECK_EQUAL (sound_asset->asset()->channels (), channels);
  71
  72         /* Sample index in the DCP */
  73         int n = 0;
  74         /* DCP sound asset frame */
  75         int frame = 0;
  76
  77         while (n < sound_asset->asset()->intrinsic_duration()) {
  78                 auto sound_frame = sound_asset->asset()->start_read()->get_frame(frame++);
  79                 uint8_t const * d = sound_frame->data ();
  80
  81                 for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->asset()->channels())) {
  82
  83                         if (sound_asset->asset()->channels() > 0) {
  84                                 /* L should be silent */
  85                                 int const sample = d[i + 1] | (d[i + 2] << 8);
  86                                 BOOST_CHECK_EQUAL (sample, 0);
  87                         }
  88
  89                         if (sound_asset->asset()->channels() > 1) {
  90                                 /* R should be silent */
  91                                 int const sample = d[i + 4] | (d[i + 5] << 8);
  92                                 BOOST_CHECK_EQUAL (sample, 0);
  93                         }
  94
  95                         if (sound_asset->asset()->channels() > 2) {
  96                                 /* Mono input so it will appear on centre */
  97                                 int const sample = d[i + 7] | (d[i + 8] << 8);
  98                                 BOOST_CHECK_EQUAL (sample, n);
  99                         }
 100
 101                         if (sound_asset->asset()->channels() > 3) {
 102                                 /* Lfe should be silent */
 103                                 int const sample = d[i + 10] | (d[i + 11] << 8);
 104                                 BOOST_CHECK_EQUAL (sample, 0);
 105                         }
 106
 107                         if (sound_asset->asset()->channels() > 4) {
 108                                 /* Ls should be silent */
 109                                 int const sample = d[i + 13] | (d[i + 14] << 8);
 110                                 BOOST_CHECK_EQUAL (sample, 0);
 111                         }
 112
 113
 114                         if (sound_asset->asset()->channels() > 5) {
 115                                 /* Rs should be silent */
 116                                 int const sample = d[i + 16] | (d[i + 17] << 8);
 117                                 BOOST_CHECK_EQUAL (sample, 0);
 118                         }
 119
 120                         ++n;
 121                 }
 122         }
 123
 124 }
 125
 126 BOOST_AUTO_TEST_CASE (silence_padding_test)
 127 {
 128         for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
 129                 test_silence_padding (i);
 130         }
 131 }
 132
 133 /** Test a situation that used to crash because of a sub-sample rounding confusion
 134  *  caused by a trim.
 135  */
 136
 137 BOOST_AUTO_TEST_CASE (silence_padding_test2)
 138 {
 139         Cleanup cl;
 140
 141         auto film = new_test_film2 ("silence_padding_test2", &cl);
 142         auto content = make_shared<FFmpegContent>(TestPaths::private_data() / "cars.mov");
 143         film->examine_and_add_content (content);
 144         BOOST_REQUIRE (!wait_for_jobs());
 145
 146         film->set_video_frame_rate (24);
 147         content->set_trim_start (dcpomatic::ContentTime(4003));
 148
 149         film->make_dcp ();
 150         BOOST_REQUIRE (!wait_for_jobs());
 151
 152         cl.run ();
 153 }