1 /* 2 * * Copyright (C) 2006-2011 Anders Brander <anders@brander.dk>, 3 * * Anders Kvist <akv@lnxbx.dk> and Klaus Post <klauspost@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef fftwindow_h__ 21 #define fftwindow_h__ 22 #include "floatimageplane.h" 23 24 namespace RawStudio { 25 namespace FFTFilter { 26 27 class FFTWindow 28 { 29 public: 30 FFTWindow(int _w, int _h); 31 virtual ~FFTWindow(void); 32 FloatImagePlane analysis; 33 FloatImagePlane synthesis; 34 void createHalfCosineWindow(int ox, int oy); 35 void createRaisedCosineWindow(int ox, int oy); 36 void createSqrtHalfCosineWindow(int ox, int oy); 37 void applyAnalysisWindow(FloatImagePlane *image, FloatImagePlane *dst); 38 void applySynthesisWindow( FloatImagePlane *image ); // Inplace, written back to image 39 private: 40 void applyAnalysisWindowSSE( FloatImagePlane *image, FloatImagePlane *dst ); 41 float createWindow( FloatImagePlane &window, int ox, float* wx); // Returns sum 42 bool analysisIsFlat; 43 bool synthesisIsFlat; 44 bool SSEAvailable; 45 }; 46 47 }} // namespace RawStudio::FFTFilter 48 49 #endif // fftwindow_h__ 50