1 /*---------------------------------------------------------------------------* 2 * fft.h * 3 * * 4 * Copyright 2007, 2008 Nuance Communciations, Inc. * 5 * * 6 * Licensed under the Apache License, Version 2.0 (the 'License'); * 7 * you may not use this file except in compliance with the License. * 8 * * 9 * You may obtain a copy of the License at * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, software * 13 * distributed under the License is distributed on an 'AS IS' BASIS, * 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 15 * See the License for the specific language governing permissions and * 16 * limitations under the License. * 17 * * 18 *---------------------------------------------------------------------------*/ 19 20 21 22 23 #ifndef _h_fft_ 24 #define _h_fft_ 25 26 27 #include "fronttyp.h" 28 29 /* These are the data objects associated with the FFT and IFFT 30 ** which generate the modulated carriers 31 */ 32 33 34 #include "sp_fft.h" 35 36 int fft_perform_and_magsq(fft_info *fft); 37 void do_magsq(fft_info *fft); 38 39 void configure_fft(fft_info *fft, int size); 40 int place_sample_data(fft_info *fft, fftdata *seq, fftdata *smooth, int num); 41 void unconfigure_fft(fft_info *fft); 42 43 44 #endif /* _h_fft_ */ 45