1 /* 2 * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 /** 17 * @file picofftsg.h 18 * 19 * include file for FFT/DCT related data types, constants and functions in Pico 20 * 21 * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland 22 * All rights reserved. 23 * 24 * History: 25 * - 2009-04-20 -- initial version 26 * 27 */ 28 #ifndef PICOFFTSG_H_ 29 #define PCOFFTSG_H_ 30 31 #include "picoos.h" 32 #include "picodsp.h" 33 34 35 #ifdef __cplusplus 36 extern "C" { 37 38 #endif 39 #if 0 40 } 41 #endif 42 43 #define PICOFFTSG_FFTTYPE picoos_int32 44 45 extern void rdft(int n, int isgn, PICOFFTSG_FFTTYPE *a); 46 extern void dfct(int n, float *a, int VAL_SHIFT); 47 extern void dfct_nmf(int n, int *a); 48 extern float norm_result(int m2, PICOFFTSG_FFTTYPE *tmpX, PICOFFTSG_FFTTYPE *norm_window); 49 50 #ifdef __cplusplus 51 } 52 #endif 53 54 #endif 55