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_ 32