1/* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 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 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18/* 19 20 Pathname: ./include/fft_rx4.h 21 22------------------------------------------------------------------------------ 23 REVISION HISTORY 24 25 (1) modified definition of w_64rx4 from Int to Int16 26 27 Who: Date: 28 Description: 29 30------------------------------------------------------------------------------ 31 INCLUDE DESCRIPTION 32 33 Header file for functions fft_rx4() 34 35 36------------------------------------------------------------------------------ 37*/ 38 39/*---------------------------------------------------------------------------- 40; CONTINUE ONLY IF NOT ALREADY DEFINED 41----------------------------------------------------------------------------*/ 42#ifndef FFT_RX4_H 43#define FFT_RX4_H 44 45/*---------------------------------------------------------------------------- 46; INCLUDES 47----------------------------------------------------------------------------*/ 48#include "pv_audio_type_defs.h" 49 50/*---------------------------------------------------------------------------- 51; MACROS 52; Define module specific macros here 53----------------------------------------------------------------------------*/ 54 55/*---------------------------------------------------------------------------- 56; DEFINES 57; Include all pre-processor statements here. 58----------------------------------------------------------------------------*/ 59#define FFT_RX4_LONG 256 60#define ONE_FOURTH_FFT_RX4_LONG ((FFT_RX4_LONG)>>2) 61#define FFT_RX4_SHORT 64 62#define ONE_FOURTH_FFT_RX4_SHORT ((FFT_RX4_SHORT)>>2) 63 64/*---------------------------------------------------------------------------- 65; EXTERNAL VARIABLES REFERENCES 66; Declare variables used in this module but defined elsewhere 67----------------------------------------------------------------------------*/ 68extern const Int16 w_64rx4[]; 69extern const Int32 W_64rx4[]; 70extern const Int32 W_256rx4[]; 71extern const Int32 w_512rx2[]; 72 73/*---------------------------------------------------------------------------- 74; SIMPLE TYPEDEF'S 75----------------------------------------------------------------------------*/ 76 77/*---------------------------------------------------------------------------- 78; ENUMERATED TYPEDEF'S 79----------------------------------------------------------------------------*/ 80 81/*---------------------------------------------------------------------------- 82; STRUCTURES TYPEDEF'S 83----------------------------------------------------------------------------*/ 84 85/*---------------------------------------------------------------------------- 86; GLOBAL FUNCTION DEFINITIONS 87; Function Prototype declaration 88----------------------------------------------------------------------------*/ 89 90#ifdef __cplusplus 91extern "C" 92{ 93#endif 94 95 void fft_rx4_long( 96 Int32 Data[], 97 Int32 *peak_value); 98 99 Int fft_rx4_short( 100 Int32 Data[], 101 Int32 *peak_value); 102 103#ifdef __cplusplus 104} 105#endif 106 107/*---------------------------------------------------------------------------- 108; END 109----------------------------------------------------------------------------*/ 110#endif /* FFT_RX4_H */ 111