1 /*
2  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
3  *
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
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef COMMON_AUDIO_FIR_FILTER_C_H_
12 #define COMMON_AUDIO_FIR_FILTER_C_H_
13 
14 #include <string.h>
15 
16 #include <memory>
17 
18 #include "common_audio/fir_filter.h"
19 
20 namespace webrtc {
21 
22 class FIRFilterC : public FIRFilter {
23  public:
24   FIRFilterC(const float* coefficients, size_t coefficients_length);
25   ~FIRFilterC() override;
26 
27   void Filter(const float* in, size_t length, float* out) override;
28 
29  private:
30   size_t coefficients_length_;
31   size_t state_length_;
32   std::unique_ptr<float[]> coefficients_;
33   std::unique_ptr<float[]> state_;
34 };
35 
36 }  // namespace webrtc
37 
38 #endif  // COMMON_AUDIO_FIR_FILTER_C_H_
39