2 Copyright (C) 2015-2021 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/>.
22 /** @file test/audio_processor_delay_test.cc
23 * @brief Test the AudioDelay class.
24 * @ingroup selfcontained
28 #include "lib/audio_buffers.h"
29 #include "lib/audio_delay.h"
30 #include <boost/test/unit_test.hpp>
37 using std::make_shared;
40 #define CHECK_SAMPLE(c,f,r) \
41 if (fabs(out->data(c)[f] - (r)) > 0.1) { \
42 cerr << "Sample " << f << " at line " << __LINE__ << " is " << out->data(c)[f] << " not " << r << "; difference is " << fabs(out->data(c)[f] - (r)) << "\n"; \
43 BOOST_REQUIRE (fabs(out->data(c)[f] - (r)) <= 0.1); \
47 /** Block size greater than delay */
48 BOOST_AUTO_TEST_CASE (audio_processor_delay_test1)
50 AudioDelay delay (64);
54 auto in = make_shared<AudioBuffers>(C, 256);
55 for (int i = 0; i < C; ++i) {
56 for (int j = 0; j < 256; ++j) {
61 auto out = delay.run (in);
62 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
64 /* Silence at the start */
65 for (int i = 0; i < C; ++i) {
66 for (int j = 0; j < 64; ++j) {
67 CHECK_SAMPLE (i, j, 0);
71 /* Then the delayed data */
72 for (int i = 0; i < C; ++i) {
73 for (int j = 64; j < 256; ++j) {
74 CHECK_SAMPLE (i, j, j - 64);
78 /* Feed some more in */
79 for (int i = 0; i < C; ++i) {
80 for (int j = 0; j < 256; ++j) {
81 in->data(i)[j] = j + 256;
87 for (int i = 0; i < C; ++i) {
88 for (int j = 256; j < 512; ++j) {
89 CHECK_SAMPLE (i, j - 256, j - 64);
95 /** Block size less than delay */
96 BOOST_AUTO_TEST_CASE (audio_processor_delay_test2)
98 AudioDelay delay (256);
102 /* Feeding 4 blocks of 64 should give silence each time */
104 for (int i = 0; i < 4; ++i) {
105 auto in = make_shared<AudioBuffers>(C, 64);
106 for (int j = 0; j < C; ++j) {
107 for (int k = 0; k < 64; ++k) {
108 in->data(j)[k] = k + i * 64;
112 auto out = delay.run (in);
113 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
115 /* Check for silence */
116 for (int j = 0; j < C; ++j) {
117 for (int k = 0; k < 64; ++k) {
118 CHECK_SAMPLE (j, k, 0);
123 /* Now feed 4 blocks of silence and we should see the data */
124 for (int i = 0; i < 4; ++i) {
125 /* Feed some silence */
126 auto in = make_shared<AudioBuffers>(C, 64);
128 auto out = delay.run (in);
130 /* Should now see the delayed data */
131 for (int j = 0; j < C; ++j) {
132 for (int k = 0; k < 64; ++k) {
133 CHECK_SAMPLE (j, k, k + i * 64);