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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 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_VAD_POLE_ZERO_FILTER_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_ |
13 | 13 |
| 14 #include <cstddef> |
| 15 |
14 #include "webrtc/typedefs.h" | 16 #include "webrtc/typedefs.h" |
15 | 17 |
16 namespace webrtc { | 18 namespace webrtc { |
17 | 19 |
18 class PoleZeroFilter { | 20 class PoleZeroFilter { |
19 public: | 21 public: |
20 ~PoleZeroFilter() {} | 22 ~PoleZeroFilter() {} |
21 | 23 |
22 static PoleZeroFilter* Create(const float* numerator_coefficients, | 24 static PoleZeroFilter* Create(const float* numerator_coefficients, |
23 int order_numerator, | 25 size_t order_numerator, |
24 const float* denominator_coefficients, | 26 const float* denominator_coefficients, |
25 int order_denominator); | 27 size_t order_denominator); |
26 | 28 |
27 int Filter(const int16_t* in, int num_input_samples, float* output); | 29 int Filter(const int16_t* in, size_t num_input_samples, float* output); |
28 | 30 |
29 private: | 31 private: |
30 PoleZeroFilter(const float* numerator_coefficients, | 32 PoleZeroFilter(const float* numerator_coefficients, |
31 int order_numerator, | 33 size_t order_numerator, |
32 const float* denominator_coefficients, | 34 const float* denominator_coefficients, |
33 int order_denominator); | 35 size_t order_denominator); |
34 | 36 |
35 static const int kMaxFilterOrder = 24; | 37 static const int kMaxFilterOrder = 24; |
36 | 38 |
37 int16_t past_input_[kMaxFilterOrder * 2]; | 39 int16_t past_input_[kMaxFilterOrder * 2]; |
38 float past_output_[kMaxFilterOrder * 2]; | 40 float past_output_[kMaxFilterOrder * 2]; |
39 | 41 |
40 float numerator_coefficients_[kMaxFilterOrder + 1]; | 42 float numerator_coefficients_[kMaxFilterOrder + 1]; |
41 float denominator_coefficients_[kMaxFilterOrder + 1]; | 43 float denominator_coefficients_[kMaxFilterOrder + 1]; |
42 | 44 |
43 int order_numerator_; | 45 size_t order_numerator_; |
44 int order_denominator_; | 46 size_t order_denominator_; |
45 int highest_order_; | 47 size_t highest_order_; |
46 }; | 48 }; |
47 | 49 |
48 } // namespace webrtc | 50 } // namespace webrtc |
49 | 51 |
50 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_ | 52 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_ |
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