Add UpmixerB.

[dcpomatic.git] / test / audio_processor_delay_test.cc

diff --git a/test/audio_processor_delay_test.cc b/test/audio_processor_delay_test.cc
new file mode 100644 (file)
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+++ b/test/audio_processor_delay_test.cc
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+/*
+    Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "lib/audio_delay.h"
+#include "lib/audio_buffers.h"
+#include <boost/test/unit_test.hpp>
+#include <cmath>
+
+using std::cerr;
+using std::cout;
+using boost::shared_ptr;
+
+#define CHECK_SAMPLE(c,f,r) \
+       if (fabs(out->data(c)[f] - (r)) > 0.1) {                        \
+               cerr << "Sample " << f << " at line " << __LINE__ << " is " << out->data(c)[f] << " not " << r << "; difference is " << fabs(out->data(c)[f] - (r)) << "\n"; \
+               BOOST_REQUIRE (fabs(out->data(c)[f] - (r)) <= 0.1);     \
+       }
+
+/** Block size greater than delay */
+BOOST_AUTO_TEST_CASE (audio_processor_delay_test1)
+{
+       AudioDelay delay (64);
+
+       int const C = 2;
+
+       shared_ptr<AudioBuffers> in (new AudioBuffers (C, 256));
+       for (int i = 0; i < C; ++i) {
+               for (int j = 0; j < 256; ++j) {
+                       in->data(i)[j] = j;
+               }
+       }
+
+       shared_ptr<AudioBuffers> out = delay.run (in);
+       BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
+
+       /* Silence at the start */
+       for (int i = 0; i < C; ++i) {
+               for (int j = 0; j < 64; ++j) {
+                       CHECK_SAMPLE (i, j, 0);
+               }
+       }
+
+       /* Then the delayed data */
+       for (int i = 0; i < C; ++i) {
+               for (int j = 64; j < 256; ++j) {
+                       CHECK_SAMPLE (i, j, j - 64);
+               }
+       }
+
+       /* Feed some more in */
+       for (int i = 0; i < C; ++i) {
+               for (int j = 0; j < 256; ++j) {
+                       in->data(i)[j] = j + 256;
+               }
+       }
+       out = delay.run (in);
+
+       /* Check again */
+       for (int i = 0; i < C; ++i) {
+               for (int j = 256; j < 512; ++j) {
+                       CHECK_SAMPLE (i, j - 256, j - 64);
+               }
+       }
+}
+
+/** Block size less than delay */
+BOOST_AUTO_TEST_CASE (audio_processor_delay_test2)
+{
+       AudioDelay delay (256);
+
+       int const C = 2;
+
+       /* Feeding 4 blocks of 64 should give silence each time */
+
+       for (int i = 0; i < 4; ++i) {
+               cout << "i=" << i << "\n";
+               shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
+               for (int j = 0; j < C; ++j) {
+                       for (int k = 0; k < 64; ++k) {
+                               in->data(j)[k] = k + i * 64;
+                       }
+               }
+
+               shared_ptr<AudioBuffers> out = delay.run (in);
+               BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
+
+               /* Check for silence */
+               for (int j = 0; j < C; ++j) {
+                       for (int k = 0; k < 64; ++k) {
+                               CHECK_SAMPLE (j, k, 0);
+                       }
+               }
+       }
+
+       /* Now feed 4 blocks of silence and we should see the data */
+       for (int i = 0; i < 4; ++i) {
+               /* Feed some silence */
+               shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
+               in->make_silent ();
+               shared_ptr<AudioBuffers> out = delay.run (in);
+
+               /* Should now see the delayed data */
+               for (int j = 0; j < C; ++j) {
+                       for (int k = 0; k < 64; ++k) {
+                               CHECK_SAMPLE (j, k, k + i * 64);
+                       }
+               }
+       }
+}