test/silence_padding_test.cc

   1 /*
   2     Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /** @file  test/silence_padding_test.cc
  21  *  @brief Test the padding (with silence) of a mono source to a 6-channel DCP.
  22  */
  23
  24 #include <boost/test/unit_test.hpp>
  25 #include <dcp/cpl.h>
  26 #include <dcp/dcp.h>
  27 #include <dcp/sound_asset.h>
  28 #include <dcp/sound_frame.h>
  29 #include <dcp/reel.h>
  30 #include <dcp/reel_sound_asset.h>
  31 #include "lib/sndfile_content.h"
  32 #include "lib/film.h"
  33 #include "lib/dcp_content_type.h"
  34 #include "lib/ratio.h"
  35 #include "test.h"
  36
  37 using std::string;
  38 using boost::lexical_cast;
  39 using boost::shared_ptr;
  40
  41 static void
  42 test_silence_padding (int channels)
  43 {
  44         string const film_name = "silence_padding_test_" + lexical_cast<string> (channels);
  45         shared_ptr<Film> film = new_test_film (film_name);
  46         film->set_dcp_content_type (DCPContentType::from_isdcf_name ("FTR"));
  47         film->set_container (Ratio::from_id ("185"));
  48         film->set_name (film_name);
  49
  50         shared_ptr<SndfileContent> content (new SndfileContent (film, "test/data/staircase.wav"));
  51         film->examine_and_add_content (content);
  52         wait_for_jobs ();
  53
  54         film->set_audio_channels (channels);
  55         film->make_dcp ();
  56         wait_for_jobs ();
  57
  58         boost::filesystem::path path = "build/test";
  59         path /= film_name;
  60         path /= film->dcp_name ();
  61         dcp::DCP check (path.string ());
  62         check.read ();
  63
  64         shared_ptr<const dcp::ReelSoundAsset> sound_asset = check.cpls().front()->reels().front()->main_sound ();
  65         BOOST_CHECK (sound_asset);
  66         BOOST_CHECK_EQUAL (sound_asset->asset()->channels (), channels);
  67
  68         /* Sample index in the DCP */
  69         int n = 0;
  70         /* DCP sound asset frame */
  71         int frame = 0;
  72
  73         while (n < sound_asset->asset()->intrinsic_duration()) {
  74                 shared_ptr<const dcp::SoundFrame> sound_frame = sound_asset->asset()->get_frame (frame++);
  75                 uint8_t const * d = sound_frame->data ();
  76
  77                 for (int i = 0; i < sound_frame->size(); i += (3 * sound_asset->asset()->channels())) {
  78
  79                         if (sound_asset->asset()->channels() > 0) {
  80                                 /* L should be silent */
  81                                 int const sample = d[i + 0] | (d[i + 1] << 8);
  82                                 BOOST_CHECK_EQUAL (sample, 0);
  83                         }
  84
  85                         if (sound_asset->asset()->channels() > 1) {
  86                                 /* R should be silent */
  87                                 int const sample = d[i + 2] | (d[i + 3] << 8);
  88                                 BOOST_CHECK_EQUAL (sample, 0);
  89                         }
  90
  91                         if (sound_asset->asset()->channels() > 2) {
  92                                 /* Mono input so it will appear on centre */
  93                                 int const sample = d[i + 7] | (d[i + 8] << 8);
  94                                 BOOST_CHECK_EQUAL (sample, n);
  95                         }
  96
  97                         if (sound_asset->asset()->channels() > 3) {
  98                                 /* Lfe should be silent */
  99                                 int const sample = d[i + 9] | (d[i + 10] << 8);
 100                                 BOOST_CHECK_EQUAL (sample, 0);
 101                         }
 102
 103                         if (sound_asset->asset()->channels() > 4) {
 104                                 /* Ls should be silent */
 105                                 int const sample = d[i + 11] | (d[i + 12] << 8);
 106                                 BOOST_CHECK_EQUAL (sample, 0);
 107                         }
 108
 109
 110                         if (sound_asset->asset()->channels() > 5) {
 111                                 /* Rs should be silent */
 112                                 int const sample = d[i + 13] | (d[i + 14] << 8);
 113                                 BOOST_CHECK_EQUAL (sample, 0);
 114                         }
 115
 116                         ++n;
 117                 }
 118         }
 119
 120 }
 121
 122 BOOST_AUTO_TEST_CASE (silence_padding_test)
 123 {
 124         for (int i = 1; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
 125                 test_silence_padding (i);
 126         }
 127 }