test/subtitle_position_test.cc

   1 /*
   2     Copyright (C) 2022 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 #include "lib/content.h"
  23 #include "lib/content_factory.h"
  24 #include "lib/film.h"
  25 #include "lib/make_dcp.h"
  26 #include "lib/text_content.h"
  27 #include "test.h"
  28 #include <dcp/interop_subtitle_asset.h>
  29 #include <dcp/language_tag.h>
  30 #include <dcp/smpte_subtitle_asset.h>
  31 #include <boost/test/unit_test.hpp>
  32 #include <vector>
  33
  34
  35 using std::shared_ptr;
  36 using std::string;
  37 using std::vector;
  38
  39
  40 BOOST_AUTO_TEST_CASE(srt_correctly_placed_in_interop)
  41 {
  42         string const name = "srt_in_interop_position_test";
  43         auto fr = content_factory("test/data/short.srt");
  44         auto film = new_test_film2(name, fr);
  45
  46         film->set_interop(true);
  47
  48         make_and_verify_dcp (
  49                 film,
  50                 {
  51                         dcp::VerificationNote::Code::INVALID_STANDARD,
  52                         dcp::VerificationNote::Code::INVALID_SUBTITLE_SPACING,
  53                         dcp::VerificationNote::Code::INVALID_SUBTITLE_FIRST_TEXT_TIME
  54                 });
  55
  56         auto output = subtitle_file(film);
  57
  58         dcp::InteropSubtitleAsset asset(output);
  59         auto output_subs = asset.subtitles();
  60         BOOST_REQUIRE_EQUAL(output_subs.size(), 1U);
  61
  62         BOOST_CHECK(output_subs[0]->v_align() == dcp::VAlign::BOTTOM);
  63         BOOST_CHECK_CLOSE(output_subs[0]->v_position(), 0.172726989, 1e-3);
  64 }
  65
  66
  67 BOOST_AUTO_TEST_CASE(srt_correctly_placed_in_smpte)
  68 {
  69         string const name = "srt_in_smpte_position_test";
  70         auto fr = content_factory("test/data/short.srt");
  71         auto film = new_test_film2(name, fr);
  72
  73         fr[0]->text[0]->set_language(dcp::LanguageTag("en-GB"));
  74         film->set_interop(false);
  75
  76         make_and_verify_dcp (
  77                 film,
  78                 {
  79                         dcp::VerificationNote::Code::MISSING_CPL_METADATA,
  80                         dcp::VerificationNote::Code::INVALID_SUBTITLE_SPACING,
  81                         dcp::VerificationNote::Code::INVALID_SUBTITLE_FIRST_TEXT_TIME
  82                 });
  83
  84         auto output = subtitle_file(film);
  85
  86         dcp::SMPTESubtitleAsset asset(output);
  87         auto output_subs = asset.subtitles();
  88         BOOST_REQUIRE_EQUAL(output_subs.size(), 1U);
  89
  90         BOOST_CHECK(output_subs[0]->v_align() == dcp::VAlign::BOTTOM);
  91         BOOST_CHECK_CLOSE(output_subs[0]->v_position(), 0.172726989, 1e-3);
  92 }
  93
  94
  95 /** Make a DCP from some DCP subtitles and check the vertical alignment */
  96 static
  97 void
  98 vpos_test(dcp::VAlign reference, float position, dcp::SubtitleStandard from, dcp::Standard to)
  99 {
 100         string standard;
 101         switch (from) {
 102                 case dcp::SubtitleStandard::SMPTE_2007:
 103                 case dcp::SubtitleStandard::SMPTE_2010:
 104                         standard = "smpte_2010";
 105                         break;
 106                 case dcp::SubtitleStandard::INTEROP:
 107                         standard = "interop";
 108                         break;
 109                 case dcp::SubtitleStandard::SMPTE_2014:
 110                         standard = "smpte_2014";
 111                         break;
 112         }
 113
 114         auto name = String::compose("vpos_test_%1_%2", standard, valign_to_string(reference));
 115         auto in = content_factory(String::compose("test/data/%1.xml", name));
 116         auto film = new_test_film2(name, in);
 117
 118         film->set_interop(to == dcp::Standard::INTEROP);
 119
 120         film->write_metadata();
 121         make_dcp(film, TranscodeJob::ChangedBehaviour::IGNORE);
 122         BOOST_REQUIRE(!wait_for_jobs());
 123
 124         auto out = subtitle_file(film);
 125         vector<shared_ptr<const dcp::Subtitle>> subtitles;
 126         if (to == dcp::Standard::INTEROP) {
 127                 dcp::InteropSubtitleAsset asset(out);
 128                 subtitles = asset.subtitles();
 129         } else {
 130                 dcp::SMPTESubtitleAsset asset(out);
 131                 subtitles = asset.subtitles();
 132         }
 133
 134         BOOST_REQUIRE_EQUAL(subtitles.size(), 1U);
 135
 136         BOOST_CHECK(subtitles[0]->v_align() == reference);
 137         BOOST_CHECK_CLOSE(subtitles[0]->v_position(), position, 2);
 138 }
 139
 140
 141 BOOST_AUTO_TEST_CASE(subtitles_correctly_placed_with_all_references)
 142 {
 143         constexpr auto baseline_to_bottom = 0.00925926;
 144         constexpr auto height = 0.0462963;
 145
 146         /* Interop source */
 147         auto from = dcp::SubtitleStandard::INTEROP;
 148
 149         // -> Interop
 150         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::INTEROP);
 151         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::INTEROP);
 152         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::INTEROP);
 153
 154         // -> SMPTE (2014)
 155         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::SMPTE);
 156         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::SMPTE);
 157         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::SMPTE);
 158
 159         /* SMPTE 2010 source */
 160         from = dcp::SubtitleStandard::SMPTE_2010;
 161
 162         // -> Interop
 163         vpos_test(dcp::VAlign::TOP, 0.1 + height - baseline_to_bottom, from, dcp::Standard::INTEROP);
 164         vpos_test(dcp::VAlign::CENTER, 0.15 + (height / 2) - baseline_to_bottom, from, dcp::Standard::INTEROP);
 165         vpos_test(dcp::VAlign::BOTTOM, 0.10 + baseline_to_bottom, from, dcp::Standard::INTEROP);
 166
 167         // -> SMPTE (2014)
 168         vpos_test(dcp::VAlign::TOP, 0.1 + height - baseline_to_bottom, from, dcp::Standard::SMPTE);
 169         vpos_test(dcp::VAlign::CENTER, 0.15 + (height / 2) - baseline_to_bottom, from, dcp::Standard::SMPTE);
 170         vpos_test(dcp::VAlign::BOTTOM, 0.10 + baseline_to_bottom, from, dcp::Standard::SMPTE);
 171
 172         /* SMPTE 2014 source */
 173         from = dcp::SubtitleStandard::SMPTE_2014;
 174
 175         // -> Interop
 176         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::INTEROP);
 177         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::INTEROP);
 178         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::INTEROP);
 179
 180         // -> SMPTE (2014)
 181         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::SMPTE);
 182         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::SMPTE);
 183         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::SMPTE);
 184 }
 185