libs/ardour/test/interpolation_test.h

   1 /* Copyright(C) 2000-2008 Paul Davis
   2  * Author: Hans Baier
   3  *
   4  * Evoral is free software; you can redistribute it and/or modify it under the
   5  * terms of the GNU General Public License as published by the Free Software
   6  * Foundation; either version 2 of the License, or(at your option) any later
   7  * version.
   8  *
   9  * Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
  10  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #include <cassert>
  19 #include <stdint.h>
  20 #include <cppunit/TestFixture.h>
  21 #include <cppunit/extensions/HelperMacros.h>
  22
  23 #include "ardour/interpolation.h"
  24
  25 class InterpolationTest : public CppUnit::TestFixture
  26 {
  27         CPPUNIT_TEST_SUITE(InterpolationTest);
  28         CPPUNIT_TEST(cubicInterpolationTest);
  29         CPPUNIT_TEST(linearInterpolationTest);
  30         CPPUNIT_TEST_SUITE_END();
  31
  32 #define NUM_SAMPLES 1000000
  33 #define INTERVAL 100
  34
  35         ARDOUR::Sample input[NUM_SAMPLES];
  36         ARDOUR::Sample output[NUM_SAMPLES];
  37
  38         ARDOUR::LinearInterpolation linear;
  39         ARDOUR::CubicInterpolation  cubic;
  40
  41         public:
  42
  43         void setUp() {
  44                 for (int i = 0; i < NUM_SAMPLES; ++i) {
  45                         if (i % INTERVAL == 0) {
  46                                 input[i] = 1.0f;
  47                         } else {
  48                                 input[i] = 0.0f;
  49                         }
  50                         output[i] = 0.0f;
  51                 }
  52                 linear.add_channel_to (NUM_SAMPLES, NUM_SAMPLES);
  53                 cubic.add_channel_to (NUM_SAMPLES, NUM_SAMPLES);
  54         }
  55
  56         void tearDown() {
  57         }
  58
  59         void linearInterpolationTest();
  60         void cubicInterpolationTest();
  61 };