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: mdct_fxp.h 21 22 ------------------------------------------------------------------------------ 23 REVISION HISTORY 24 25 Description: This extern had the incorrect length of the arrays. The true 26 lengths are 128 and 1024, not 64 and 512. 27 28 Description: Modified interface so a vector with extended precision is 29 returned. Added copyright notice. 30 31 Who: Date: 32 Description: 33 34 ------------------------------------------------------------------------------ 35 INCLUDE DESCRIPTION 36 37 Header file for function mdct_fxp() 38 39 40 ------------------------------------------------------------------------------ 41 */ 42 43 /*---------------------------------------------------------------------------- 44 ; CONTINUE ONLY IF NOT ALREADY DEFINED 45 ----------------------------------------------------------------------------*/ 46 #ifndef MDCT_FXP_H 47 #define MDCT_FXP_H 48 49 #ifdef __cplusplus 50 extern "C" 51 { 52 #endif 53 54 /*---------------------------------------------------------------------------- 55 ; INCLUDES 56 ----------------------------------------------------------------------------*/ 57 #include "pv_audio_type_defs.h" 58 59 /*---------------------------------------------------------------------------- 60 ; MACROS 61 ; Define module specific macros here 62 ----------------------------------------------------------------------------*/ 63 64 /*---------------------------------------------------------------------------- 65 ; DEFINES 66 ; Include all pre-processor statements here. 67 ----------------------------------------------------------------------------*/ 68 #define LONG_WINDOW_TYPE 2048 69 #define SHORT_WINDOW_TYPE 256 70 71 /*---------------------------------------------------------------------------- 72 ; EXTERNAL VARIABLES REFERENCES 73 ; Declare variables used in this module but defined elsewhere 74 ----------------------------------------------------------------------------*/ 75 76 extern const Int exp_rotation_N_256[128]; 77 extern const Int exp_rotation_N_2048[1024]; 78 79 /*---------------------------------------------------------------------------- 80 ; SIMPLE TYPEDEF'S 81 ----------------------------------------------------------------------------*/ 82 83 /*---------------------------------------------------------------------------- 84 ; ENUMERATED TYPEDEF'S 85 ----------------------------------------------------------------------------*/ 86 87 /*---------------------------------------------------------------------------- 88 ; STRUCTURES TYPEDEF'S 89 ----------------------------------------------------------------------------*/ 90 91 /*---------------------------------------------------------------------------- 92 ; GLOBAL FUNCTION DEFINITIONS 93 ; Function Prototype declaration 94 ----------------------------------------------------------------------------*/ 95 Int mdct_fxp( 96 Int32 data_quant[], 97 Int32 Q_FFTarray[], 98 Int n); 99 100 #ifdef __cplusplus 101 } 102 #endif 103 104 /*---------------------------------------------------------------------------- 105 ; END 106 ----------------------------------------------------------------------------*/ 107 #endif /* MDCT_FXP_H */ 108