Basic test that we (roughly) hit average J2K bandwidth targets.

2 files changed, 69 insertions, 0 deletions

diff --git a/test/j2k_bandwidth_test.cc b/test/j2k_bandwidth_test.cc
new file mode 100644
index 000000000..ed8f5d9c8
--- /dev/null
+++ b/test/j2k_bandwidth_test.cc
@@ -0,0 +1,68 @@
+/*
+    Copyright (C) 2016 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "test.h"
+#include "lib/dcp_content_type.h"
+#include "lib/film.h"
+#include "lib/image_content.h"
+#include "lib/video_content.h"
+#include <dcp/raw_convert.h>
+#include <boost/test/unit_test.hpp>
+#include <boost/shared_ptr.hpp>
+
+using std::string;
+using boost::shared_ptr;
+
+static void
+check (int target_bits_per_second)
+{
+	int const duration = 10;
+
+	string const name = "j2k_bandwidth_test_" + dcp::raw_convert<string> (target_bits_per_second);
+	shared_ptr<Film> film = new_test_film (name);
+	film->set_name (name);
+	film->set_dcp_content_type (DCPContentType::from_isdcf_name ("FTR"));
+	film->set_j2k_bandwidth (target_bits_per_second);
+	shared_ptr<ImageContent> content (new ImageContent (film, private_data / "prophet_frame.tiff"));
+	film->examine_and_add_content (content);
+	wait_for_jobs ();
+	content->video->set_length (24 * duration);
+	film->make_dcp ();
+	wait_for_jobs ();
+
+	boost::filesystem::directory_iterator i (boost::filesystem::path ("build") / "test" / name / "video");
+	boost::filesystem::path test = *i++;
+	BOOST_REQUIRE (i == boost::filesystem::directory_iterator ());
+
+	double actual_bits_per_second = boost::filesystem::file_size(test) * 8.0 / duration;
+
+	/* Check that we're within 85% to 115% of target on average */
+	BOOST_CHECK ((actual_bits_per_second / target_bits_per_second) > 0.85);
+	BOOST_CHECK ((actual_bits_per_second / target_bits_per_second) < 1.15);
+}
+
+BOOST_AUTO_TEST_CASE (j2k_bandwidth_test)
+{
+	check (50000000);
+	check (100000000);
+	check (150000000);
+	check (200000000);
+	check (250000000);
+}
diff --git a/test/wscript b/test/wscript
index 4c0b4109f..0a871ec55 100644
--- a/test/wscript
+++ b/test/wscript
@@ -71,6 +71,7 @@ def build(bld):
                  import_dcp_test.cc
                  interrupt_encoder_test.cc
                  isdcf_name_test.cc
+                 j2k_bandwidth_test.cc
                  job_test.cc
                  make_black_test.cc
                  player_test.cc