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         fr[0]->only_text()->set_language(dcp::LanguageTag("de"));
  46
  47         film->set_interop(true);
  48
  49         make_and_verify_dcp (
  50                 film,
  51                 {
  52                         dcp::VerificationNote::Code::INVALID_STANDARD,
  53                         dcp::VerificationNote::Code::INVALID_SUBTITLE_SPACING,
  54                         dcp::VerificationNote::Code::INVALID_SUBTITLE_FIRST_TEXT_TIME
  55                 });
  56
  57         auto output = subtitle_file(film);
  58
  59         dcp::InteropSubtitleAsset asset(output);
  60         auto output_subs = asset.subtitles();
  61         BOOST_REQUIRE_EQUAL(output_subs.size(), 1U);
  62
  63         BOOST_CHECK(output_subs[0]->v_align() == dcp::VAlign::BOTTOM);
  64         BOOST_CHECK_CLOSE(output_subs[0]->v_position(), 0.172726989, 1e-3);
  65 }
  66
  67
  68 BOOST_AUTO_TEST_CASE(srt_correctly_placed_in_smpte)
  69 {
  70         string const name = "srt_in_smpte_position_test";
  71         auto fr = content_factory("test/data/short.srt");
  72         auto film = new_test_film2(name, fr);
  73
  74         fr[0]->text[0]->set_language(dcp::LanguageTag("en"));
  75         film->set_interop(false);
  76
  77         make_and_verify_dcp (
  78                 film,
  79                 {
  80                         dcp::VerificationNote::Code::MISSING_CPL_METADATA,
  81                         dcp::VerificationNote::Code::INVALID_SUBTITLE_SPACING,
  82                         dcp::VerificationNote::Code::INVALID_SUBTITLE_FIRST_TEXT_TIME
  83                 });
  84
  85         auto output = subtitle_file(film);
  86
  87         dcp::SMPTESubtitleAsset asset(output);
  88         auto output_subs = asset.subtitles();
  89         BOOST_REQUIRE_EQUAL(output_subs.size(), 1U);
  90
  91         BOOST_CHECK(output_subs[0]->v_align() == dcp::VAlign::BOTTOM);
  92         BOOST_CHECK_CLOSE(output_subs[0]->v_position(), 0.172726989, 1e-3);
  93 }
  94
  95
  96 /** Make a DCP from some DCP subtitles and check the vertical alignment */
  97 static
  98 void
  99 vpos_test(dcp::VAlign reference, float position, dcp::SubtitleStandard from, dcp::Standard to)
 100 {
 101         string standard;
 102         switch (from) {
 103                 case dcp::SubtitleStandard::SMPTE_2007:
 104                 case dcp::SubtitleStandard::SMPTE_2010:
 105                         standard = "smpte_2010";
 106                         break;
 107                 case dcp::SubtitleStandard::INTEROP:
 108                         standard = "interop";
 109                         break;
 110                 case dcp::SubtitleStandard::SMPTE_2014:
 111                         standard = "smpte_2014";
 112                         break;
 113         }
 114
 115         auto name = String::compose("vpos_test_%1_%2", standard, valign_to_string(reference));
 116         auto in = content_factory(String::compose("test/data/%1.xml", name));
 117         auto film = new_test_film2(name, in);
 118
 119         film->set_interop(to == dcp::Standard::INTEROP);
 120
 121         film->write_metadata();
 122         make_dcp(film, TranscodeJob::ChangedBehaviour::IGNORE);
 123         BOOST_REQUIRE(!wait_for_jobs());
 124
 125         auto out = subtitle_file(film);
 126         vector<shared_ptr<const dcp::Subtitle>> subtitles;
 127         if (to == dcp::Standard::INTEROP) {
 128                 dcp::InteropSubtitleAsset asset(out);
 129                 subtitles = asset.subtitles();
 130         } else {
 131                 dcp::SMPTESubtitleAsset asset(out);
 132                 subtitles = asset.subtitles();
 133         }
 134
 135         BOOST_REQUIRE_EQUAL(subtitles.size(), 1U);
 136
 137         BOOST_CHECK(subtitles[0]->v_align() == reference);
 138         BOOST_CHECK_CLOSE(subtitles[0]->v_position(), position, 2);
 139 }
 140
 141
 142 BOOST_AUTO_TEST_CASE(subtitles_correctly_placed_with_all_references)
 143 {
 144         constexpr auto baseline_to_bottom = 0.00925926;
 145         constexpr auto height = 0.0462963;
 146
 147         /* Interop source */
 148         auto from = dcp::SubtitleStandard::INTEROP;
 149
 150         // -> Interop
 151         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::INTEROP);
 152         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::INTEROP);
 153         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::INTEROP);
 154
 155         // -> SMPTE (2014)
 156         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::SMPTE);
 157         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::SMPTE);
 158         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::SMPTE);
 159
 160         /* SMPTE 2010 source */
 161         from = dcp::SubtitleStandard::SMPTE_2010;
 162
 163         // -> Interop
 164         vpos_test(dcp::VAlign::TOP, 0.1 + height - baseline_to_bottom, from, dcp::Standard::INTEROP);
 165         vpos_test(dcp::VAlign::CENTER, 0.15 + (height / 2) - baseline_to_bottom, from, dcp::Standard::INTEROP);
 166         vpos_test(dcp::VAlign::BOTTOM, 0.10 + baseline_to_bottom, from, dcp::Standard::INTEROP);
 167
 168         // -> SMPTE (2014)
 169         vpos_test(dcp::VAlign::TOP, 0.1 + height - baseline_to_bottom, from, dcp::Standard::SMPTE);
 170         vpos_test(dcp::VAlign::CENTER, 0.15 + (height / 2) - baseline_to_bottom, from, dcp::Standard::SMPTE);
 171         vpos_test(dcp::VAlign::BOTTOM, 0.10 + baseline_to_bottom, from, dcp::Standard::SMPTE);
 172
 173         /* SMPTE 2014 source */
 174         from = dcp::SubtitleStandard::SMPTE_2014;
 175
 176         // -> Interop
 177         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::INTEROP);
 178         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::INTEROP);
 179         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::INTEROP);
 180
 181         // -> SMPTE (2014)
 182         vpos_test(dcp::VAlign::TOP, 0.2, from, dcp::Standard::SMPTE);
 183         vpos_test(dcp::VAlign::CENTER, 0.11, from, dcp::Standard::SMPTE);
 184         vpos_test(dcp::VAlign::BOTTOM, 0.08, from, dcp::Standard::SMPTE);
 185 }
 186