1 /* 2 * Copyright (C) 2008 The Android Open Source Project 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 express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* ---- includes ----------------------------------------------------------- */ 18 19 #include "b_BasicEm/Functions.h" 20 #include "b_BasicEm/Math.h" 21 #include "b_BitFeatureEm/L01Dns2x4Ftr.h" 22 23 /* ------------------------------------------------------------------------- */ 24 25 /* ========================================================================= */ 26 /* */ 27 /* ---- \ghd{ auxiliary functions } ---------------------------------------- */ 28 /* */ 29 /* ========================================================================= */ 30 31 /* ------------------------------------------------------------------------- */ 32 33 /* ========================================================================= */ 34 /* */ 35 /* ---- \ghd{ constructor / destructor } ----------------------------------- */ 36 /* */ 37 /* ========================================================================= */ 38 39 /* ------------------------------------------------------------------------- */ 40 41 void bbf_L01Dns2x4Ftr_init( struct bbs_Context* cpA, 42 struct bbf_L01Dns2x4Ftr* ptrA ) 43 { 44 bbf_Feature_init( cpA, &ptrA->baseE ); 45 ptrA->baseE.typeE = ( uint32 )bbf_FT_L01_DNS_2X4_FTR; 46 ptrA->baseE.vpActivityE = bbf_L01Dns2x4Ftr_activity; 47 bbs_UInt32Arr_init( cpA, &ptrA->dataArrE ); 48 ptrA->activityFactorE = 0; 49 } 50 51 /* ------------------------------------------------------------------------- */ 52 53 void bbf_L01Dns2x4Ftr_exit( struct bbs_Context* cpA, 54 struct bbf_L01Dns2x4Ftr* ptrA ) 55 { 56 bbf_Feature_exit( cpA, &ptrA->baseE ); 57 bbs_UInt32Arr_exit( cpA, &ptrA->dataArrE ); 58 ptrA->activityFactorE = 0; 59 } 60 61 /* ------------------------------------------------------------------------- */ 62 63 /* ========================================================================= */ 64 /* */ 65 /* ---- \ghd{ operators } -------------------------------------------------- */ 66 /* */ 67 /* ========================================================================= */ 68 69 /* ------------------------------------------------------------------------- */ 70 71 void bbf_L01Dns2x4Ftr_copy( struct bbs_Context* cpA, 72 struct bbf_L01Dns2x4Ftr* ptrA, 73 const struct bbf_L01Dns2x4Ftr* srcPtrA ) 74 { 75 bbf_Feature_copy( cpA, &ptrA->baseE, &srcPtrA->baseE ); 76 bbs_UInt32Arr_copy( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE ); 77 ptrA->activityFactorE = srcPtrA->activityFactorE; 78 } 79 80 /* ------------------------------------------------------------------------- */ 81 82 flag bbf_L01Dns2x4Ftr_equal( struct bbs_Context* cpA, 83 const struct bbf_L01Dns2x4Ftr* ptrA, 84 const struct bbf_L01Dns2x4Ftr* srcPtrA ) 85 { 86 if( !bbf_Feature_equal( cpA, &ptrA->baseE, &srcPtrA->baseE ) ) return FALSE; 87 if( !bbs_UInt32Arr_equal( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE ) ) return FALSE; 88 if( ptrA->activityFactorE != srcPtrA->activityFactorE ) return FALSE; 89 return TRUE; 90 } 91 92 /* ------------------------------------------------------------------------- */ 93 94 /* ========================================================================= */ 95 /* */ 96 /* ---- \ghd{ query functions } -------------------------------------------- */ 97 /* */ 98 /* ========================================================================= */ 99 100 /* ------------------------------------------------------------------------- */ 101 102 /* ========================================================================= */ 103 /* */ 104 /* ---- \ghd{ modify functions } ------------------------------------------- */ 105 /* */ 106 /* ========================================================================= */ 107 108 /* ------------------------------------------------------------------------- */ 109 110 /* ========================================================================= */ 111 /* */ 112 /* ---- \ghd{ I/O } -------------------------------------------------------- */ 113 /* */ 114 /* ========================================================================= */ 115 116 /* ------------------------------------------------------------------------- */ 117 118 uint32 bbf_L01Dns2x4Ftr_memSize( struct bbs_Context* cpA, 119 const struct bbf_L01Dns2x4Ftr* ptrA ) 120 { 121 uint32 memSizeL = bbs_SIZEOF16( uint32 ) + 122 bbs_SIZEOF16( uint32 ); /* version */ 123 124 memSizeL += bbf_Feature_memSize( cpA, &ptrA->baseE ); 125 memSizeL += bbs_UInt32Arr_memSize( cpA, &ptrA->dataArrE ); 126 memSizeL += bbs_SIZEOF16( ptrA->activityFactorE ); 127 128 return memSizeL; 129 } 130 131 /* ------------------------------------------------------------------------- */ 132 133 uint32 bbf_L01Dns2x4Ftr_memWrite( struct bbs_Context* cpA, 134 const struct bbf_L01Dns2x4Ftr* ptrA, 135 uint16* memPtrA ) 136 { 137 uint32 memSizeL = bbf_L01Dns2x4Ftr_memSize( cpA, ptrA ); 138 memPtrA += bbs_memWrite32( &memSizeL, memPtrA ); 139 memPtrA += bbs_memWriteUInt32( bbf_L01_DNS_2X4_FTR_VERSION, memPtrA ); 140 memPtrA += bbf_Feature_memWrite( cpA, &ptrA->baseE, memPtrA ); 141 memPtrA += bbs_UInt32Arr_memWrite( cpA, &ptrA->dataArrE, memPtrA ); 142 memPtrA += bbs_memWrite32( &ptrA->activityFactorE, memPtrA ); 143 return memSizeL; 144 } 145 146 /* ------------------------------------------------------------------------- */ 147 148 uint32 bbf_L01Dns2x4Ftr_memRead( struct bbs_Context* cpA, 149 struct bbf_L01Dns2x4Ftr* ptrA, 150 const uint16* memPtrA, 151 struct bbs_MemTbl* mtpA ) 152 { 153 uint32 memSizeL, versionL; 154 struct bbs_MemTbl memTblL = *mtpA; 155 struct bbs_MemSeg* espL = bbs_MemTbl_fastestSegPtr( cpA, &memTblL, 0 ); 156 if( bbs_Context_error( cpA ) ) return 0; 157 memPtrA += bbs_memRead32( &memSizeL, memPtrA ); 158 memPtrA += bbs_memReadVersion32( cpA, &versionL, bbf_L01_DNS_2X4_FTR_VERSION, memPtrA ); 159 memPtrA += bbf_Feature_memRead( cpA, &ptrA->baseE, memPtrA ); 160 memPtrA += bbs_UInt32Arr_memRead( cpA, &ptrA->dataArrE, memPtrA, espL ); 161 memPtrA += bbs_memRead32( &ptrA->activityFactorE, memPtrA ); 162 if( memSizeL != bbf_L01Dns2x4Ftr_memSize( cpA, ptrA ) ) 163 { 164 bbs_ERR0( bbs_ERR_CORRUPT_DATA, "uint32 bbf_L01Dns2x4Ftr_memRead( struct bem_ScanGradientMove* ptrA, const uint16* memPtrA ):\n" 165 "size mismatch" ); 166 return 0; 167 } 168 169 return memSizeL; 170 } 171 172 /* ------------------------------------------------------------------------- */ 173 174 /* ========================================================================= */ 175 /* */ 176 /* ---- \ghd{ exec functions } --------------------------------------------- */ 177 /* */ 178 /* ========================================================================= */ 179 180 /* ------------------------------------------------------------------------- */ 181 182 int32 bbf_L01Dns2x4Ftr_activity( const struct bbf_Feature* ptrA, const uint32* patchA ) 183 { 184 const struct bbf_L01Dns2x4Ftr* ptrL = ( struct bbf_L01Dns2x4Ftr* )ptrA; 185 186 uint32 wL = ptrL->baseE.patchWidthE - 1; 187 uint32 hL = ptrL->baseE.patchHeightE - 3; 188 189 const uint32* dataPtrL = ptrL->dataArrE.arrPtrE; 190 191 uint32 iL; 192 uint32 borderMaskL = ( ( uint32 )1 << hL ) - 1; 193 194 /* partial bit sums */ 195 uint32 bsL = 0; 196 197 uint32 sL[ 8 ]; 198 uint32 mL[ 4 ]; 199 200 for( iL = 0; iL < wL; iL++ ) 201 { 202 uint32 s1L = patchA[ iL ]; 203 uint32 s2L = patchA[ iL + 1 ]; 204 205 /* comparison of pixels with patchHeightE - 3 features */ 206 sL[ 0 ] = ( ( s1L ) ^ dataPtrL[ 0 ] ) & borderMaskL; 207 sL[ 1 ] = ( ( s1L >> 1 ) ^ dataPtrL[ 1 ] ) & borderMaskL; 208 sL[ 2 ] = ( ( s1L >> 2 ) ^ dataPtrL[ 2 ] ) & borderMaskL; 209 sL[ 3 ] = ( ( s1L >> 3 ) ^ dataPtrL[ 3 ] ) & borderMaskL; 210 211 sL[ 4 ] = ( ( s2L ) ^ dataPtrL[ 4 ] ) & borderMaskL; 212 sL[ 5 ] = ( ( s2L >> 1 ) ^ dataPtrL[ 5 ] ) & borderMaskL; 213 sL[ 6 ] = ( ( s2L >> 2 ) ^ dataPtrL[ 6 ] ) & borderMaskL; 214 sL[ 7 ] = ( ( s2L >> 3 ) ^ dataPtrL[ 7 ] ) & borderMaskL; 215 216 /* parallel bit counting of patchHeightE - 3 features */ 217 mL[ 0 ] = ( ( sL[ 0 ] & 0x11111111 ) + ( sL[ 1 ] & 0x11111111 ) + 218 ( sL[ 2 ] & 0x11111111 ) + ( sL[ 3 ] & 0x11111111 ) + 219 ( sL[ 4 ] & 0x11111111 ) + ( sL[ 5 ] & 0x11111111 ) + 220 ( sL[ 6 ] & 0x11111111 ) + ( sL[ 7 ] & 0x11111111 ) ); 221 222 mL[ 1 ] = ( ( sL[ 0 ] & 0x22222222 ) + ( sL[ 1 ] & 0x22222222 ) + 223 ( sL[ 2 ] & 0x22222222 ) + ( sL[ 3 ] & 0x22222222 ) + 224 ( sL[ 4 ] & 0x22222222 ) + ( sL[ 5 ] & 0x22222222 ) + 225 ( sL[ 6 ] & 0x22222222 ) + ( sL[ 7 ] & 0x22222222 ) ) >> 1; 226 227 mL[ 2 ] = ( ( sL[ 0 ] & 0x44444444 ) + ( sL[ 1 ] & 0x44444444 ) + 228 ( sL[ 2 ] & 0x44444444 ) + ( sL[ 3 ] & 0x44444444 ) + 229 ( sL[ 4 ] & 0x44444444 ) + ( sL[ 5 ] & 0x44444444 ) + 230 ( sL[ 6 ] & 0x44444444 ) + ( sL[ 7 ] & 0x44444444 ) ) >> 2; 231 232 mL[ 3 ] = ( ( sL[ 0 ] & 0x88888888 ) + ( sL[ 1 ] & 0x88888888 ) + 233 ( sL[ 2 ] & 0x88888888 ) + ( sL[ 3 ] & 0x88888888 ) + 234 ( sL[ 4 ] & 0x88888888 ) + ( sL[ 5 ] & 0x88888888 ) + 235 ( sL[ 6 ] & 0x88888888 ) + ( sL[ 7 ] & 0x88888888 ) ) >> 3; 236 237 /* parallel comparison with thresholds and packing of results into bit array of size patchHeightE - 3 */ 238 { 239 uint32 vL = ~dataPtrL[ 8 ]; 240 vL |= ( ( mL[ 0 ] + dataPtrL[ 9 ] ) & 0x88888888 ) >> 3; 241 vL |= ( ( mL[ 1 ] + dataPtrL[ 10 ] ) & 0x88888888 ) >> 2; 242 vL |= ( ( mL[ 2 ] + dataPtrL[ 11 ] ) & 0x88888888 ) >> 1; 243 vL |= ( ( mL[ 3 ] + dataPtrL[ 12 ] ) & 0x88888888 ); 244 vL = ( ~vL ) & 0x1FFFFFFF; 245 246 /* compute partial bit sums */ 247 vL = ( vL & 0x55555555 ) + ( ( vL >> 1 ) & 0x55555555 ); 248 vL = ( vL & 0x33333333 ) + ( ( vL >> 2 ) & 0x33333333 ); 249 bsL += ( vL & 0x0F0F0F0F ) + ( ( vL >> 4 ) & 0x0F0F0F0F ); 250 } 251 252 dataPtrL += 13; 253 } 254 255 bsL = ( bsL & 0x00FF00FF ) + ( ( bsL >> 8 ) & 0x00FF00FF ); 256 bsL += bsL >> 16; 257 258 /* compute final activity */ 259 { 260 uint32 actL = ( bsL & 0x0FFFF ); 261 return actL * ptrL->activityFactorE; 262 } 263 } 264 265 /* ------------------------------------------------------------------------- */ 266 267 /* ========================================================================= */ 268 269
