test/video_content_scale_test.cc

   1 /*
   2     Copyright (C) 2015 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/video_content_scale_test.cc
  22  *  @brief Test VideoContentScale
  23  *  @ingroup selfcontained
  24  */
  25
  26 #include "lib/ffmpeg_content.h"
  27 #include "lib/ratio.h"
  28 #include "lib/video_content.h"
  29 #include <dcp/raw_convert.h>
  30 #include <boost/test/unit_test.hpp>
  31
  32 using std::list;
  33 using std::string;
  34 using std::cerr;
  35 using boost::shared_ptr;
  36 using boost::optional;
  37 using dcp::raw_convert;
  38
  39 static
  40 void
  41 test (dcp::Size content_size, dcp::Size display_size, dcp::Size film_size, Crop crop, Ratio const * ratio, bool scale, dcp::Size correct)
  42 {
  43         shared_ptr<Film> film;
  44         string s = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
  45                 "<Content>"
  46                 "<Type>FFmpeg</Type>"
  47                 "<Path>/home/c.hetherington/DCP/prophet_clip.mkv</Path>"
  48                 "<Digest>f3f23663da5bef6d2cbaa0db066f3351314142710</Digest>"
  49                 "<Position>0</Position>"
  50                 "<TrimStart>0</TrimStart>"
  51                 "<TrimEnd>0</TrimEnd>"
  52                 "<VideoLength>2879</VideoLength>"
  53                 "<VideoWidth>" + raw_convert<string>(content_size.width) + "</VideoWidth>"
  54                 "<VideoHeight>" + raw_convert<string>(content_size.height) + "</VideoHeight>"
  55                 "<VideoFrameRate>23.97602462768555</VideoFrameRate>"
  56                 "<OriginalVideoFrameRate>23.97602462768555</OriginalVideoFrameRate>"
  57                 "<VideoFrameType>0</VideoFrameType>"
  58                 "<SampleAspectRatio>1</SampleAspectRatio>"
  59                 "<BitsPerPixel>12</BitsPerPixel>"
  60                 "<LeftCrop>" + raw_convert<string>(crop.left) + "</LeftCrop>"
  61                 "<RightCrop>" + raw_convert<string>(crop.right) + "</RightCrop>"
  62                 "<TopCrop>" + raw_convert<string>(crop.top) + "</TopCrop>"
  63                 "<BottomCrop>" + raw_convert<string>(crop.bottom) + "</BottomCrop>"
  64                 "<Scale>";
  65
  66         if (ratio) {
  67                 s += "<Ratio>" + ratio->id() + "</Ratio>";
  68         } else {
  69                 s += "<Scale>" + string(scale ? "1" : "0") + "</Scale>";
  70         }
  71
  72         s += "</Scale>"
  73                 "<ColourConversion>"
  74                 "<InputGamma>2.4</InputGamma>"
  75                 "<InputGammaLinearised>1</InputGammaLinearised>"
  76                 "<Matrix i=\"0\" j=\"0\">0.4124564</Matrix>"
  77                 "<Matrix i=\"0\" j=\"1\">0.3575761</Matrix>"
  78                 "<Matrix i=\"0\" j=\"2\">0.1804375</Matrix>"
  79                 "<Matrix i=\"1\" j=\"0\">0.2126729</Matrix>"
  80                 "<Matrix i=\"1\" j=\"1\">0.7151522</Matrix>"
  81                 "<Matrix i=\"1\" j=\"2\">0.072175</Matrix>"
  82                 "<Matrix i=\"2\" j=\"0\">0.0193339</Matrix>"
  83                 "<Matrix i=\"2\" j=\"1\">0.119192</Matrix>"
  84                 "<Matrix i=\"2\" j=\"2\">0.9503041</Matrix>"
  85                 "<OutputGamma>2.6</OutputGamma>"
  86                 "</ColourConversion>"
  87                 "<AudioGain>0</AudioGain>"
  88                 "<AudioDelay>0</AudioDelay>"
  89                 "<SubtitleXOffset>0</SubtitleXOffset>"
  90                 "<SubtitleYOffset>0</SubtitleYOffset>"
  91                 "<SubtitleXScale>0</SubtitleXScale>"
  92                 "<SubtitleYScale>0</SubtitleYScale>"
  93                 "</Content>";
  94
  95         shared_ptr<cxml::Document> doc (new cxml::Document ());
  96         doc->read_string (s);
  97
  98         list<string> notes;
  99         shared_ptr<FFmpegContent> vc (new FFmpegContent (film, doc, 10, notes));
 100
 101         optional<VideoContentScale> sc;
 102         if (ratio) {
 103                 sc = VideoContentScale (ratio);
 104         } else {
 105                 sc = VideoContentScale (scale);
 106         }
 107
 108         dcp::Size answer = sc.get().size (vc->video, display_size, film_size);
 109         if (answer != correct) {
 110                 cerr << "Testing " << vc->video->size().width << "x" << vc->video->size().height << "\n";
 111                 cerr << "Testing " << display_size.width << "x" << display_size.height << "\n";
 112                 cerr << answer.width << "x" << answer.height << " instead of " << correct.width << "x" << correct.height << "\n";
 113         }
 114         BOOST_CHECK (answer == correct);
 115 }
 116
 117 /* Test scale and stretch to specified ratio */
 118 BOOST_AUTO_TEST_CASE (video_content_scale_test_to_ratio)
 119 {
 120         /* To DCP */
 121
 122         // Flat in flat container
 123         test (
 124                 dcp::Size (400, 200),
 125                 dcp::Size (1998, 1080),
 126                 dcp::Size (1998, 1080),
 127                 Crop (0, 0, 0, 0),
 128                 Ratio::from_id ("185"),
 129                 true,
 130                 dcp::Size (1998, 1080)
 131                 );
 132
 133         // Scope in flat container
 134         test (
 135                 dcp::Size (400, 200),
 136                 dcp::Size (1998, 1080),
 137                 dcp::Size (1998, 1080),
 138                 Crop (0, 0, 0, 0),
 139                 Ratio::from_id ("239"),
 140                 true,
 141                 dcp::Size (1998, 837)
 142                 );
 143
 144         // Flat in scope container
 145         test (
 146                 dcp::Size (400, 200),
 147                 dcp::Size (2048, 858),
 148                 dcp::Size (2048, 858),
 149                 Crop (0, 0, 0, 0),
 150                 Ratio::from_id ("185"),
 151                 true,
 152                 dcp::Size (1587, 858)
 153                 );
 154
 155
 156         /* To player */
 157
 158         // Flat in flat container
 159         test (
 160                 dcp::Size (400, 200),
 161                 dcp::Size (185, 100),
 162                 dcp::Size (1998, 1080),
 163                 Crop (0, 0, 0, 0),
 164                 Ratio::from_id ("185"),
 165                 true,
 166                 dcp::Size (185, 100)
 167                 );
 168
 169         // Scope in flat container
 170         test (
 171                 dcp::Size (400, 200),
 172                 dcp::Size (185, 100),
 173                 dcp::Size (1998, 1080),
 174                 Crop (0, 0, 0, 0),
 175                 Ratio::from_id ("239"),
 176                 true,
 177                 dcp::Size (185, 78)
 178                 );
 179
 180         // Flat in scope container
 181         test (
 182                 dcp::Size (400, 200),
 183                 dcp::Size (239, 100),
 184                 dcp::Size (2048, 858),
 185                 Crop (0, 0, 0, 0),
 186                 Ratio::from_id ("185"),
 187                 true,
 188                 dcp::Size (185, 100)
 189                 );
 190 }
 191
 192 /* Test no scale */
 193 BOOST_AUTO_TEST_CASE (video_content_scale_no_scale)
 194 {
 195        /* No scale where the content is bigger than even the film container */
 196        test (
 197                dcp::Size (1920, 1080),
 198                dcp::Size (887, 371),
 199                dcp::Size (2048, 858),
 200                Crop (),
 201                0,
 202                false,
 203                dcp::Size (659, 371)
 204                );
 205 }