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1 /* | 1 /* |
2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2017 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 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ |
13 | 13 |
14 #include <algorithm> | 14 #include <algorithm> |
15 #include <vector> | 15 #include <vector> |
16 | 16 |
17 #include "webrtc/base/array_view.h" | 17 #include "webrtc/rtc_base/array_view.h" |
18 #include "webrtc/base/constructormagic.h" | 18 #include "webrtc/rtc_base/constructormagic.h" |
19 #include "webrtc/base/random.h" | 19 #include "webrtc/rtc_base/random.h" |
20 | 20 |
21 namespace webrtc { | 21 namespace webrtc { |
22 | 22 |
23 // Randomizes the elements in a vector with values -32767.f:32767.f. | 23 // Randomizes the elements in a vector with values -32767.f:32767.f. |
24 void RandomizeSampleVector(Random* random_generator, rtc::ArrayView<float> v); | 24 void RandomizeSampleVector(Random* random_generator, rtc::ArrayView<float> v); |
25 | 25 |
26 // Class for delaying a signal a fixed number of samples. | 26 // Class for delaying a signal a fixed number of samples. |
27 template <typename T> | 27 template <typename T> |
28 class DelayBuffer { | 28 class DelayBuffer { |
29 public: | 29 public: |
30 explicit DelayBuffer(size_t delay) : buffer_(delay) {} | 30 explicit DelayBuffer(size_t delay) : buffer_(delay) {} |
31 ~DelayBuffer() = default; | 31 ~DelayBuffer() = default; |
32 | 32 |
33 // Produces a delayed signal copy of x. | 33 // Produces a delayed signal copy of x. |
34 void Delay(rtc::ArrayView<const T> x, rtc::ArrayView<T> x_delayed); | 34 void Delay(rtc::ArrayView<const T> x, rtc::ArrayView<T> x_delayed); |
35 | 35 |
36 private: | 36 private: |
37 std::vector<T> buffer_; | 37 std::vector<T> buffer_; |
38 size_t next_insert_index_ = 0; | 38 size_t next_insert_index_ = 0; |
39 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(DelayBuffer); | 39 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(DelayBuffer); |
40 }; | 40 }; |
41 | 41 |
42 } // namespace webrtc | 42 } // namespace webrtc |
43 | 43 |
44 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ | 44 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_ |
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