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 #include "lib/audio_delay.h"
22 #include "lib/audio_buffers.h"
23 #include <boost/test/unit_test.hpp>
24 #include <boost/make_shared.hpp>
30 using boost::shared_ptr;
31 using boost::make_shared;
33 #define CHECK_SAMPLE(c,f,r) \
34 if (fabs(out->data(c)[f] - (r)) > 0.1) { \
35 cerr << "Sample " << f << " at line " << __LINE__ << " is " << out->data(c)[f] << " not " << r << "; difference is " << fabs(out->data(c)[f] - (r)) << "\n"; \
36 BOOST_REQUIRE (fabs(out->data(c)[f] - (r)) <= 0.1); \
39 /** Block size greater than delay */
40 BOOST_AUTO_TEST_CASE (audio_processor_delay_test1)
42 AudioDelay delay (64);
46 shared_ptr<AudioBuffers> in = make_shared<AudioBuffers> (C, 256);
47 for (int i = 0; i < C; ++i) {
48 for (int j = 0; j < 256; ++j) {
53 shared_ptr<AudioBuffers> out = delay.run (in);
54 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
56 /* Silence at the start */
57 for (int i = 0; i < C; ++i) {
58 for (int j = 0; j < 64; ++j) {
59 CHECK_SAMPLE (i, j, 0);
63 /* Then the delayed data */
64 for (int i = 0; i < C; ++i) {
65 for (int j = 64; j < 256; ++j) {
66 CHECK_SAMPLE (i, j, j - 64);
70 /* Feed some more in */
71 for (int i = 0; i < C; ++i) {
72 for (int j = 0; j < 256; ++j) {
73 in->data(i)[j] = j + 256;
79 for (int i = 0; i < C; ++i) {
80 for (int j = 256; j < 512; ++j) {
81 CHECK_SAMPLE (i, j - 256, j - 64);
86 /** Block size less than delay */
87 BOOST_AUTO_TEST_CASE (audio_processor_delay_test2)
89 AudioDelay delay (256);
93 /* Feeding 4 blocks of 64 should give silence each time */
95 for (int i = 0; i < 4; ++i) {
96 shared_ptr<AudioBuffers> in = make_shared<AudioBuffers> (C, 64);
97 for (int j = 0; j < C; ++j) {
98 for (int k = 0; k < 64; ++k) {
99 in->data(j)[k] = k + i * 64;
103 shared_ptr<AudioBuffers> out = delay.run (in);
104 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
106 /* Check for silence */
107 for (int j = 0; j < C; ++j) {
108 for (int k = 0; k < 64; ++k) {
109 CHECK_SAMPLE (j, k, 0);
114 /* Now feed 4 blocks of silence and we should see the data */
115 for (int i = 0; i < 4; ++i) {
116 /* Feed some silence */
117 shared_ptr<AudioBuffers> in = make_shared<AudioBuffers> (C, 64);
119 shared_ptr<AudioBuffers> out = delay.run (in);
121 /* Should now see the delayed data */
122 for (int j = 0; j < C; ++j) {
123 for (int k = 0; k < 64; ++k) {
124 CHECK_SAMPLE (j, k, k + i * 64);