window_generator.h (987B)
1 /* 2 * Copyright (c) 2014 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_WINDOW_GENERATOR_H_ 12 #define COMMON_AUDIO_WINDOW_GENERATOR_H_ 13 14 #include <stddef.h> 15 16 namespace webrtc { 17 18 // Helper class with generators for various signal transform windows. 19 class WindowGenerator { 20 public: 21 WindowGenerator() = delete; 22 WindowGenerator(const WindowGenerator&) = delete; 23 WindowGenerator& operator=(const WindowGenerator&) = delete; 24 25 static void Hanning(int length, float* window); 26 static void KaiserBesselDerived(float alpha, size_t length, float* window); 27 }; 28 29 } // namespace webrtc 30 31 #endif // COMMON_AUDIO_WINDOW_GENERATOR_H_