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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 // MSVC++ requires this to be set before any other includes to get M_PI. | 11 // MSVC++ requires this to be set before any other includes to get M_PI. |
12 #define _USE_MATH_DEFINES | 12 #define _USE_MATH_DEFINES |
13 | 13 |
14 #include <cmath> | 14 #include <cmath> |
15 | 15 |
16 #include "testing/gtest/include/gtest/gtest.h" | 16 #include "testing/gtest/include/gtest/gtest.h" |
17 #include "webrtc/common_audio/channel_buffer.h" | 17 #include "webrtc/common_audio/channel_buffer.h" |
18 #include "webrtc/modules/audio_processing/splitting_filter.h" | 18 #include "webrtc/modules/audio_processing/splitting_filter.h" |
19 | 19 |
20 namespace webrtc { | 20 namespace webrtc { |
21 namespace { | 21 namespace { |
22 | 22 |
23 enum { | 23 const int kSamplesPer16kHzChannel = 160; |
24 kSamplesPer16kHzChannel = 160, | 24 const int kSamplesPer48kHzChannel = 480; |
25 kSamplesPer48kHzChannel = 480 | |
26 }; | |
27 | 25 |
28 } // namespace | 26 } // namespace |
29 | 27 |
30 // Generates a signal from presence or absence of sine waves of different | 28 // Generates a signal from presence or absence of sine waves of different |
31 // frequencies. | 29 // frequencies. |
32 // Splits into 3 bands and checks their presence or absence. | 30 // Splits into 3 bands and checks their presence or absence. |
33 // Recombines the bands. | 31 // Recombines the bands. |
34 // Calculates the delay. | 32 // Calculates the delay. |
35 // Checks that the cross correlation of input and output is high enough at the | 33 // Checks that the cross correlation of input and output is high enough at the |
36 // calculated delay. | 34 // calculated delay. |
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99 for (int j = 0; j < kNumBands; ++j) { | 97 for (int j = 0; j < kNumBands; ++j) { |
100 any_present |= is_present[j]; | 98 any_present |= is_present[j]; |
101 } | 99 } |
102 if (any_present) { | 100 if (any_present) { |
103 EXPECT_GT(xcorr, kAmplitude * kAmplitude / 4); | 101 EXPECT_GT(xcorr, kAmplitude * kAmplitude / 4); |
104 } | 102 } |
105 } | 103 } |
106 } | 104 } |
107 | 105 |
108 } // namespace webrtc | 106 } // namespace webrtc |
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