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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ |
13 | 13 |
14 #include <vector> | 14 #include <vector> |
15 | 15 |
16 #include "webrtc/rtc_base/optional.h" | 16 #include "webrtc/base/optional.h" |
17 | 17 |
18 namespace webrtc { | 18 namespace webrtc { |
19 | 19 |
20 // Ring buffer containing floating point values. | 20 // Ring buffer containing floating point values. |
21 struct CircularBuffer { | 21 struct CircularBuffer { |
22 public: | 22 public: |
23 explicit CircularBuffer(size_t size); | 23 explicit CircularBuffer(size_t size); |
24 ~CircularBuffer(); | 24 ~CircularBuffer(); |
25 | 25 |
26 void Push(float value); | 26 void Push(float value); |
27 rtc::Optional<float> Pop(); | 27 rtc::Optional<float> Pop(); |
28 size_t Size() const { return nr_elements_in_buffer_; } | 28 size_t Size() const { return nr_elements_in_buffer_; } |
29 // This function fills the buffer with zeros, but does not change its size. | 29 // This function fills the buffer with zeros, but does not change its size. |
30 void Clear(); | 30 void Clear(); |
31 | 31 |
32 private: | 32 private: |
33 std::vector<float> buffer_; | 33 std::vector<float> buffer_; |
34 size_t next_insertion_index_ = 0; | 34 size_t next_insertion_index_ = 0; |
35 // This is the number of elements that have been pushed into the circular | 35 // This is the number of elements that have been pushed into the circular |
36 // buffer, not the allocated buffer size. | 36 // buffer, not the allocated buffer size. |
37 size_t nr_elements_in_buffer_ = 0; | 37 size_t nr_elements_in_buffer_ = 0; |
38 }; | 38 }; |
39 | 39 |
40 } // namespace webrtc | 40 } // namespace webrtc |
41 | 41 |
42 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ | 42 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_ |
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