Re-add audio merger test.

2 files changed, 104 insertions, 0 deletions

diff --git a/test/audio_merger_test.cc b/test/audio_merger_test.cc
new file mode 100644
index 000000000..a03d3b30f
--- /dev/null
+++ b/test/audio_merger_test.cc
@@ -0,0 +1,103 @@
+/*
+    Copyright (C) 2013-2017 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 "lib/audio_merger.h"
+#include "lib/audio_buffers.h"
+#include <boost/test/unit_test.hpp>
+#include <boost/bind.hpp>
+#include <boost/function.hpp>
+#include <boost/signals2.hpp>
+
+using std::pair;
+using boost::shared_ptr;
+using boost::bind;
+
+static shared_ptr<const AudioBuffers> last_audio;
+
+int const sampling_rate = 48000;
+
+BOOST_AUTO_TEST_CASE (audio_merger_test1)
+{
+	AudioMerger merger (1, sampling_rate);
+
+	/* Push 64 samples, 0 -> 63 at time 0 */
+	shared_ptr<AudioBuffers> buffers (new AudioBuffers (1, 64));
+	for (int i = 0; i < 64; ++i) {
+		buffers->data()[0][i] = i;
+	}
+	merger.push (buffers, DCPTime());
+
+	/* Push 64 samples, 0 -> 63 at time 22 */
+	merger.push (buffers, DCPTime::from_frames (22, sampling_rate));
+
+	pair<shared_ptr<AudioBuffers>, DCPTime> tb = merger.pull (DCPTime::from_frames (22, sampling_rate));
+	BOOST_CHECK (tb.first != shared_ptr<const AudioBuffers> ());
+	BOOST_CHECK_EQUAL (tb.first->frames(), 22);
+	BOOST_CHECK_EQUAL (tb.second.get(), 0);
+
+	/* And they should be a staircase */
+	for (int i = 0; i < 22; ++i) {
+		BOOST_CHECK_EQUAL (tb.first->data()[0][i], i);
+	}
+
+	tb = merger.pull (DCPTime::from_frames (22 + 64, sampling_rate));
+
+	BOOST_CHECK_EQUAL (tb.first->frames(), 64);
+	BOOST_CHECK_EQUAL (tb.second.get(), DCPTime::from_frames(22, sampling_rate).get());
+
+	/* Check the sample values */
+	for (int i = 0; i < 64; ++i) {
+		int correct = i;
+		if (i < (64 - 22)) {
+			correct += i + 22;
+		}
+		BOOST_CHECK_EQUAL (tb.first->data()[0][i], correct);
+	}
+}
+
+BOOST_AUTO_TEST_CASE (audio_merger_test2)
+{
+	AudioMerger merger (1, sampling_rate);
+
+	/* Push 64 samples, 0 -> 63 at time 9 */
+	shared_ptr<AudioBuffers> buffers (new AudioBuffers (1, 64));
+	for (int i = 0; i < 64; ++i) {
+		buffers->data()[0][i] = i;
+	}
+	merger.push (buffers, DCPTime::from_frames (9, sampling_rate));
+
+	pair<shared_ptr<AudioBuffers>, DCPTime> tb = merger.pull (DCPTime::from_frames (9, sampling_rate));
+	BOOST_CHECK_EQUAL (tb.first->frames(), 9);
+	BOOST_CHECK_EQUAL (tb.second.get(), 0);
+
+	for (int i = 0; i < 9; ++i) {
+		BOOST_CHECK_EQUAL (tb.first->data()[0][i], 0);
+	}
+
+	tb = merger.pull (DCPTime::from_frames (9 + 64, sampling_rate));
+
+	BOOST_CHECK_EQUAL (tb.first->frames(), 64);
+	BOOST_CHECK_EQUAL (tb.second.get(), DCPTime::from_frames(9, sampling_rate).get());
+
+	/* Check the sample values */
+	for (int i = 0; i < 64; ++i) {
+		BOOST_CHECK_EQUAL (tb.first->data()[0][i], i);
+	}
+}
diff --git a/test/wscript b/test/wscript
index cfc114937..6089abe7b 100644
--- a/test/wscript
+++ b/test/wscript
@@ -45,6 +45,7 @@ def build(bld):
                  audio_delay_test.cc
                  audio_filter_test.cc
                  audio_mapping_test.cc
+                 audio_merger_test.cc
                  audio_processor_test.cc
                  audio_processor_delay_test.cc
                  black_fill_test.cc