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 ----------------------------------------------------------------------------*/ 68 extern const Int16 w_64rx4[]; 69 extern const Int32 W_64rx4[]; 70 extern const Int32 W_256rx4[]; 71 extern 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 91 extern "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
