2 Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "lib/audio_delay.h"
21 #include "lib/audio_buffers.h"
22 #include <boost/test/unit_test.hpp>
28 using boost::shared_ptr;
30 #define CHECK_SAMPLE(c,f,r) \
31 if (fabs(out->data(c)[f] - (r)) > 0.1) { \
32 cerr << "Sample " << f << " at line " << __LINE__ << " is " << out->data(c)[f] << " not " << r << "; difference is " << fabs(out->data(c)[f] - (r)) << "\n"; \
33 BOOST_REQUIRE (fabs(out->data(c)[f] - (r)) <= 0.1); \
36 /** Block size greater than delay */
37 BOOST_AUTO_TEST_CASE (audio_processor_delay_test1)
39 AudioDelay delay (64);
43 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 256));
44 for (int i = 0; i < C; ++i) {
45 for (int j = 0; j < 256; ++j) {
50 shared_ptr<AudioBuffers> out = delay.run (in);
51 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
53 /* Silence at the start */
54 for (int i = 0; i < C; ++i) {
55 for (int j = 0; j < 64; ++j) {
56 CHECK_SAMPLE (i, j, 0);
60 /* Then the delayed data */
61 for (int i = 0; i < C; ++i) {
62 for (int j = 64; j < 256; ++j) {
63 CHECK_SAMPLE (i, j, j - 64);
67 /* Feed some more in */
68 for (int i = 0; i < C; ++i) {
69 for (int j = 0; j < 256; ++j) {
70 in->data(i)[j] = j + 256;
76 for (int i = 0; i < C; ++i) {
77 for (int j = 256; j < 512; ++j) {
78 CHECK_SAMPLE (i, j - 256, j - 64);
83 /** Block size less than delay */
84 BOOST_AUTO_TEST_CASE (audio_processor_delay_test2)
86 AudioDelay delay (256);
90 /* Feeding 4 blocks of 64 should give silence each time */
92 for (int i = 0; i < 4; ++i) {
93 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
94 for (int j = 0; j < C; ++j) {
95 for (int k = 0; k < 64; ++k) {
96 in->data(j)[k] = k + i * 64;
100 shared_ptr<AudioBuffers> out = delay.run (in);
101 BOOST_REQUIRE_EQUAL (out->frames(), in->frames());
103 /* Check for silence */
104 for (int j = 0; j < C; ++j) {
105 for (int k = 0; k < 64; ++k) {
106 CHECK_SAMPLE (j, k, 0);
111 /* Now feed 4 blocks of silence and we should see the data */
112 for (int i = 0; i < 4; ++i) {
113 /* Feed some silence */
114 shared_ptr<AudioBuffers> in (new AudioBuffers (C, 64));
116 shared_ptr<AudioBuffers> out = delay.run (in);
118 /* Should now see the delayed data */
119 for (int j = 0; j < C; ++j) {
120 for (int k = 0; k < 64; ++k) {
121 CHECK_SAMPLE (j, k, k + i * 64);