2 Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
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.
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.
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/>.
21 /** @file test/audio_processor_delay_test.cc
22 * @brief Test the AudioDelay class.
23 * @ingroup selfcontained
26 #include "lib/audio_delay.h"
27 #include "lib/audio_buffers.h"
28 #include <boost/test/unit_test.hpp>
34 using boost::shared_ptr;
36 #define CHECK_SAMPLE(c,f,r) \
37 if (fabs(out->data(c)[f] - (r)) > 0.1) { \
38 cerr << "Sample " << f << " at line " << __LINE__ << " is " << out->data(c)[f] << " not " << r << "; difference is " << fabs(out->data(c)[f] - (r)) << "\n"; \
39 BOOST_REQUIRE (fabs(out->data(c)[f] - (r)) <= 0.1); \
42 /** Block size greater than delay */
43 BOOST_AUTO_TEST_CASE (audio_processor_delay_test1)
45 AudioDelay delay (64);
49 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 256));
50 for (int i = 0; i < C; ++i) {
51 for (int j = 0; j < 256; ++j) {
56 shared_ptr<AudioBuffers> out = delay.run (in);
57 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
59 /* Silence at the start */
60 for (int i = 0; i < C; ++i) {
61 for (int j = 0; j < 64; ++j) {
62 CHECK_SAMPLE (i, j, 0);
66 /* Then the delayed data */
67 for (int i = 0; i < C; ++i) {
68 for (int j = 64; j < 256; ++j) {
69 CHECK_SAMPLE (i, j, j - 64);
73 /* Feed some more in */
74 for (int i = 0; i < C; ++i) {
75 for (int j = 0; j < 256; ++j) {
76 in->data(i)[j] = j + 256;
82 for (int i = 0; i < C; ++i) {
83 for (int j = 256; j < 512; ++j) {
84 CHECK_SAMPLE (i, j - 256, j - 64);
89 /** Block size less than delay */
90 BOOST_AUTO_TEST_CASE (audio_processor_delay_test2)
92 AudioDelay delay (256);
96 /* Feeding 4 blocks of 64 should give silence each time */
98 for (int i = 0; i < 4; ++i) {
99 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
100 for (int j = 0; j < C; ++j) {
101 for (int k = 0; k < 64; ++k) {
102 in->data(j)[k] = k + i * 64;
106 shared_ptr<AudioBuffers> out = delay.run (in);
107 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
109 /* Check for silence */
110 for (int j = 0; j < C; ++j) {
111 for (int k = 0; k < 64; ++k) {
112 CHECK_SAMPLE (j, k, 0);
117 /* Now feed 4 blocks of silence and we should see the data */
118 for (int i = 0; i < 4; ++i) {
119 /* Feed some silence */
120 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
122 shared_ptr<AudioBuffers> out = delay.run (in);
124 /* Should now see the delayed data */
125 for (int j = 0; j < C; ++j) {
126 for (int k = 0; k < 64; ++k) {
127 CHECK_SAMPLE (j, k, k + i * 64);