xref: /aosp_15_r20/external/webrtc/common_audio/window_generator.h (revision d9f758449e529ab9291ac668be2861e7a55c2422)
1*d9f75844SAndroid Build Coastguard Worker /*
2*d9f75844SAndroid Build Coastguard Worker  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
3*d9f75844SAndroid Build Coastguard Worker  *
4*d9f75844SAndroid Build Coastguard Worker  *  Use of this source code is governed by a BSD-style license
5*d9f75844SAndroid Build Coastguard Worker  *  that can be found in the LICENSE file in the root of the source
6*d9f75844SAndroid Build Coastguard Worker  *  tree. An additional intellectual property rights grant can be found
7*d9f75844SAndroid Build Coastguard Worker  *  in the file PATENTS.  All contributing project authors may
8*d9f75844SAndroid Build Coastguard Worker  *  be found in the AUTHORS file in the root of the source tree.
9*d9f75844SAndroid Build Coastguard Worker  */
10*d9f75844SAndroid Build Coastguard Worker 
11*d9f75844SAndroid Build Coastguard Worker #ifndef COMMON_AUDIO_WINDOW_GENERATOR_H_
12*d9f75844SAndroid Build Coastguard Worker #define COMMON_AUDIO_WINDOW_GENERATOR_H_
13*d9f75844SAndroid Build Coastguard Worker 
14*d9f75844SAndroid Build Coastguard Worker #include <stddef.h>
15*d9f75844SAndroid Build Coastguard Worker 
16*d9f75844SAndroid Build Coastguard Worker namespace webrtc {
17*d9f75844SAndroid Build Coastguard Worker 
18*d9f75844SAndroid Build Coastguard Worker // Helper class with generators for various signal transform windows.
19*d9f75844SAndroid Build Coastguard Worker class WindowGenerator {
20*d9f75844SAndroid Build Coastguard Worker  public:
21*d9f75844SAndroid Build Coastguard Worker   WindowGenerator() = delete;
22*d9f75844SAndroid Build Coastguard Worker   WindowGenerator(const WindowGenerator&) = delete;
23*d9f75844SAndroid Build Coastguard Worker   WindowGenerator& operator=(const WindowGenerator&) = delete;
24*d9f75844SAndroid Build Coastguard Worker 
25*d9f75844SAndroid Build Coastguard Worker   static void Hanning(int length, float* window);
26*d9f75844SAndroid Build Coastguard Worker   static void KaiserBesselDerived(float alpha, size_t length, float* window);
27*d9f75844SAndroid Build Coastguard Worker };
28*d9f75844SAndroid Build Coastguard Worker 
29*d9f75844SAndroid Build Coastguard Worker }  // namespace webrtc
30*d9f75844SAndroid Build Coastguard Worker 
31*d9f75844SAndroid Build Coastguard Worker #endif  // COMMON_AUDIO_WINDOW_GENERATOR_H_
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