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: s_tDec_Int_Chan.h 21 22 ------------------------------------------------------------------------------ 23 REVISION HISTORY 24 25 Description: Change data types of win 26 27 Description: Remove wnd_shape structure. 28 29 Description: Remove dependency on window_block.h, Fix header too. 30 31 Description: 32 Modified to utilize memory in the last 1024 elements in fxpCoef. 33 34 Description: 35 (1) Modified to include the lines... 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #ifdef __cplusplus 42 } 43 #endif 44 45 (2) Updated the copyright header. 46 47 Description: 48 (1) Move temporary FrameInfo structure into the shared region with fxpCoef. 49 (2) Add more comments detailing the size of the shared structure. 50 51 Description: 52 (1) Changed time_quant from 2048 Int32 buffer to 1024 Int32 buffer. 53 54 Who: Date: 55 Description: 56 57 ------------------------------------------------------------------------------ 58 INCLUDE DESCRIPTION 59 60 This include file defines the structure, tDec_Int_Chan 61 62 ------------------------------------------------------------------------------ 63 */ 64 65 /*---------------------------------------------------------------------------- 66 ; CONTINUE ONLY IF NOT ALREADY DEFINED 67 ----------------------------------------------------------------------------*/ 68 #ifndef S_TDEC_INT_CHAN_H 69 #define S_TDEC_INT_CHAN_H 70 71 #ifdef __cplusplus 72 extern "C" 73 { 74 #endif 75 76 /*---------------------------------------------------------------------------- 77 ; INCLUDES 78 ----------------------------------------------------------------------------*/ 79 #include "pv_audio_type_defs.h" 80 #include "e_rawbitstreamconst.h" 81 #include "s_tns_frame_info.h" 82 #include "s_wnd_shape.h" 83 #include "s_lt_pred_status.h" 84 #include "s_sectinfo.h" 85 #include "s_frameinfo.h" 86 #include "e_window_shape.h" 87 #include "e_window_sequence.h" 88 #include "window_block_fxp.h" 89 90 /*---------------------------------------------------------------------------- 91 ; MACROS 92 ; Define module specific macros here 93 ----------------------------------------------------------------------------*/ 94 95 /*---------------------------------------------------------------------------- 96 ; DEFINES 97 ; Include all pre-processor statements here. 98 ----------------------------------------------------------------------------*/ 99 100 /*---------------------------------------------------------------------------- 101 ; EXTERNAL VARIABLES REFERENCES 102 ; Declare variables used in this module but defined elsewhere 103 ----------------------------------------------------------------------------*/ 104 105 /*---------------------------------------------------------------------------- 106 ; SIMPLE TYPEDEF'S 107 ----------------------------------------------------------------------------*/ 108 109 /*---------------------------------------------------------------------------- 110 ; ENUMERATED TYPEDEF'S 111 ----------------------------------------------------------------------------*/ 112 113 /*---------------------------------------------------------------------------- 114 ; STRUCTURES TYPEDEF'S 115 ----------------------------------------------------------------------------*/ 116 117 /* This structure was created with the specific goal in mind of sharing memory 118 * with the last 1024 data elements in fxpCoef. 119 * 120 * The size of this structure must NOT exceed 4 kilobytes 121 * Also, the size of the fxpCoef array cannot be less than 8 kilobytes 122 * 123 * The fxpCoef array is declared as an Int32, so its size should not vary 124 * from platform to platform. 125 * 126 * The shared structure is 3,640 bytes (3.55 KB), on a 32-bit platform, 127 * which represents the worst case. 128 */ 129 typedef struct 130 { 131 TNS_frame_info tns; 132 133 FrameInfo frameInfo; 134 135 Int factors[MAXBANDS]; 136 Int cb_map[MAXBANDS]; 137 Int group[NSHORT]; 138 Int qFormat[MAXBANDS]; 139 140 Int max_sfb; 141 LT_PRED_STATUS lt_status; 142 143 } per_chan_share_w_fxpCoef; 144 145 /* 146 * This structure contains one per channel. 147 */ 148 typedef struct 149 { 150 #ifdef AAC_PLUS 151 Int16 ltp_buffer[LT_BLEN + 2*288]; /* LT_BLEN = 2048 + 2*288 */ 152 #else 153 Int16 ltp_buffer[LT_BLEN]; /* LT_BLEN = 2048 */ 154 #endif 155 156 157 Int32 time_quant[LONG_WINDOW]; /* 1024 holds overlap&add */ 158 159 Int32 *fxpCoef; /* Spectrum coeff.*/ 160 161 per_chan_share_w_fxpCoef * pShareWfxpCoef; 162 163 Int32 abs_max_per_window[NUM_SHORT_WINDOWS]; 164 165 WINDOW_SEQUENCE wnd; 166 167 168 WINDOW_SHAPE wnd_shape_prev_bk; 169 WINDOW_SHAPE wnd_shape_this_bk; 170 171 } tDec_Int_Chan; 172 173 /*---------------------------------------------------------------------------- 174 ; GLOBAL FUNCTION DEFINITIONS 175 ; Function Prototype declaration 176 ----------------------------------------------------------------------------*/ 177 178 #ifdef __cplusplus 179 } 180 #endif 181 182 #endif /* S_TDEC_INT_CHAN_H */ 183 184
