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 Filename: sbr_get_cpe.c 21 22 ------------------------------------------------------------------------------ 23 REVISION HISTORY 24 25 26 Who: Date: MM/DD/YYYY 27 Description: 28 29 ------------------------------------------------------------------------------ 30 INPUT AND OUTPUT DEFINITIONS 31 32 Arguments: hFrameDataLeft - handle to struct SBR_FRAME_DATA for first channel 33 hFrameDataRight - handle to struct SBR_FRAME_DATA for first channel 34 hBitBuf - handle to struct BIT_BUF 35 36 Return: SbrFrameOK 37 38 39 ------------------------------------------------------------------------------ 40 FUNCTION DESCRIPTION 41 42 43 ------------------------------------------------------------------------------ 44 REQUIREMENTS 45 46 47 ------------------------------------------------------------------------------ 48 REFERENCES 49 50 SC 29 Software Copyright Licencing Disclaimer: 51 52 This software module was originally developed by 53 Coding Technologies 54 55 and edited by 56 - 57 58 in the course of development of the ISO/IEC 13818-7 and ISO/IEC 14496-3 59 standards for reference purposes and its performance may not have been 60 optimized. This software module is an implementation of one or more tools as 61 specified by the ISO/IEC 13818-7 and ISO/IEC 14496-3 standards. 62 ISO/IEC gives users free license to this software module or modifications 63 thereof for use in products claiming conformance to audiovisual and 64 image-coding related ITU Recommendations and/or ISO/IEC International 65 Standards. ISO/IEC gives users the same free license to this software module or 66 modifications thereof for research purposes and further ISO/IEC standardisation. 67 Those intending to use this software module in products are advised that its 68 use may infringe existing patents. ISO/IEC have no liability for use of this 69 software module or modifications thereof. Copyright is not released for 70 products that do not conform to audiovisual and image-coding related ITU 71 Recommendations and/or ISO/IEC International Standards. 72 The original developer retains full right to modify and use the code for its 73 own purpose, assign or donate the code to a third party and to inhibit third 74 parties from using the code for products that do not conform to audiovisual and 75 image-coding related ITU Recommendations and/or ISO/IEC International Standards. 76 This copyright notice must be included in all copies or derivative works. 77 Copyright (c) ISO/IEC 2002. 78 79 ------------------------------------------------------------------------------ 80 PSEUDO-CODE 81 82 ------------------------------------------------------------------------------ 83 */ 84 85 86 /*---------------------------------------------------------------------------- 87 ; INCLUDES 88 ----------------------------------------------------------------------------*/ 89 90 #ifdef AAC_PLUS 91 92 93 #include "sbr_get_cpe.h" 94 #include "buf_getbits.h" 95 #include "extractframeinfo.h" 96 #include "sbr_get_dir_control_data.h" 97 #include "sbr_get_envelope.h" 98 #include "sbr_get_noise_floor_data.h" 99 #include "sbr_get_additional_data.h" 100 #include "sbr_extract_extended_data.h" 101 #include "aac_mem_funcs.h" 102 103 /*---------------------------------------------------------------------------- 104 ; MACROS 105 ; Define module specific macros here 106 ----------------------------------------------------------------------------*/ 107 108 109 /*---------------------------------------------------------------------------- 110 ; DEFINES 111 ; Include all pre-processor statements here. Include conditional 112 ; compile variables also. 113 ----------------------------------------------------------------------------*/ 114 115 /*---------------------------------------------------------------------------- 116 ; LOCAL FUNCTION DEFINITIONS 117 ; Function Prototype declaration 118 ----------------------------------------------------------------------------*/ 119 120 /*---------------------------------------------------------------------------- 121 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS 122 ; Variable declaration - defined here and used outside this module 123 ----------------------------------------------------------------------------*/ 124 125 /*---------------------------------------------------------------------------- 126 ; EXTERNAL FUNCTION REFERENCES 127 ; Declare functions defined elsewhere and referenced in this module 128 ----------------------------------------------------------------------------*/ 129 130 /*---------------------------------------------------------------------------- 131 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES 132 ; Declare variables used in this module but defined elsewhere 133 ----------------------------------------------------------------------------*/ 134 135 /*---------------------------------------------------------------------------- 136 ; FUNCTION CODE 137 ----------------------------------------------------------------------------*/ 138 139 140 SBR_ERROR sbr_get_cpe(SBR_FRAME_DATA * hFrameDataLeft, 141 SBR_FRAME_DATA * hFrameDataRight, 142 BIT_BUFFER * hBitBuf) 143 { 144 Int32 i; 145 Int32 bits; 146 SBR_ERROR err = SBRDEC_OK; 147 148 /* reserved bits */ 149 bits = buf_getbits(hBitBuf, SI_SBR_RESERVED_PRESENT); 150 151 if (bits) 152 { 153 buf_getbits(hBitBuf, SI_SBR_RESERVED_BITS_DATA); 154 buf_getbits(hBitBuf, SI_SBR_RESERVED_BITS_DATA); 155 } 156 157 /* Read coupling flag */ 158 bits = buf_getbits(hBitBuf, SI_SBR_COUPLING_BITS); 159 160 if (bits) 161 { 162 hFrameDataLeft->coupling = COUPLING_LEVEL; 163 hFrameDataRight->coupling = COUPLING_BAL; 164 } 165 else 166 { 167 hFrameDataLeft->coupling = COUPLING_OFF; 168 hFrameDataRight->coupling = COUPLING_OFF; 169 } 170 171 172 err = extractFrameInfo(hBitBuf, hFrameDataLeft); 173 174 if (err != SBRDEC_OK) 175 { 176 return err; 177 } 178 179 if (hFrameDataLeft->coupling) 180 { 181 182 pv_memcpy(hFrameDataRight->frameInfo, 183 hFrameDataLeft->frameInfo, 184 LENGTH_FRAME_INFO * sizeof(Int32)); 185 186 hFrameDataRight->nNoiseFloorEnvelopes = hFrameDataLeft->nNoiseFloorEnvelopes; 187 hFrameDataRight->frameClass = hFrameDataLeft->frameClass; 188 189 190 sbr_get_dir_control_data(hFrameDataLeft, hBitBuf); 191 sbr_get_dir_control_data(hFrameDataRight, hBitBuf); 192 193 for (i = 0; i < hFrameDataLeft->nNfb; i++) 194 { 195 hFrameDataLeft->sbr_invf_mode_prev[i] = hFrameDataLeft->sbr_invf_mode[i]; 196 hFrameDataRight->sbr_invf_mode_prev[i] = hFrameDataRight->sbr_invf_mode[i]; 197 198 hFrameDataLeft->sbr_invf_mode[i] = (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); 199 hFrameDataRight->sbr_invf_mode[i] = hFrameDataLeft->sbr_invf_mode[i]; 200 } 201 202 sbr_get_envelope(hFrameDataLeft, hBitBuf); 203 sbr_get_noise_floor_data(hFrameDataLeft, hBitBuf); 204 sbr_get_envelope(hFrameDataRight, hBitBuf); 205 206 } 207 else 208 { 209 err = extractFrameInfo(hBitBuf, hFrameDataRight); 210 211 if (err != SBRDEC_OK) 212 { 213 return err; 214 } 215 216 217 sbr_get_dir_control_data(hFrameDataLeft, hBitBuf); 218 sbr_get_dir_control_data(hFrameDataRight, hBitBuf); 219 220 for (i = 0; i < hFrameDataLeft->nNfb; i++) 221 { 222 hFrameDataLeft->sbr_invf_mode_prev[i] = hFrameDataLeft->sbr_invf_mode[i]; 223 hFrameDataLeft->sbr_invf_mode[i] = 224 (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); 225 } 226 227 for (i = 0; i < hFrameDataRight->nNfb; i++) 228 { 229 hFrameDataRight->sbr_invf_mode_prev[i] = hFrameDataRight->sbr_invf_mode[i]; 230 231 hFrameDataRight->sbr_invf_mode[i] = 232 (INVF_MODE) buf_getbits(hBitBuf, SI_SBR_INVF_MODE_BITS); 233 } 234 sbr_get_envelope(hFrameDataLeft, hBitBuf); 235 sbr_get_envelope(hFrameDataRight, hBitBuf); 236 237 sbr_get_noise_floor_data(hFrameDataLeft, hBitBuf); 238 239 } 240 241 sbr_get_noise_floor_data(hFrameDataRight, hBitBuf); 242 243 pv_memset((void *)hFrameDataLeft->addHarmonics, 244 0, 245 hFrameDataLeft->nSfb[HI]*sizeof(Int32)); 246 247 pv_memset((void *)hFrameDataRight->addHarmonics, 248 0, 249 hFrameDataRight->nSfb[HI]*sizeof(Int32)); 250 251 sbr_get_additional_data(hFrameDataLeft, hBitBuf); 252 sbr_get_additional_data(hFrameDataRight, hBitBuf); 253 254 sbr_extract_extended_data(hBitBuf 255 #ifdef PARAMETRICSTEREO 256 , NULL 257 #endif 258 ); 259 260 return SBRDEC_OK; 261 262 } 263 264 #endif 265 266 267
