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/L04Dns2x4Ftr.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 
bbf_L04Dns2x4Ftr_init(struct bbs_Context * cpA,struct bbf_L04Dns2x4Ftr * ptrA)41 void bbf_L04Dns2x4Ftr_init( struct bbs_Context* cpA,
42 						    struct bbf_L04Dns2x4Ftr* ptrA )
43 {
44 	bbf_Feature_init( cpA, &ptrA->baseE );
45 	ptrA->baseE.typeE = ( uint32 )bbf_FT_L04_DNS_2X4_FTR;
46 	ptrA->baseE.vpActivityE = bbf_L04Dns2x4Ftr_activity;
47 	bbs_UInt32Arr_init( cpA, &ptrA->dataArrE );
48 	ptrA->activityFactorE = 0;
49 }
50 
51 /* ------------------------------------------------------------------------- */
52 
bbf_L04Dns2x4Ftr_exit(struct bbs_Context * cpA,struct bbf_L04Dns2x4Ftr * ptrA)53 void bbf_L04Dns2x4Ftr_exit( struct bbs_Context* cpA,
54 						    struct bbf_L04Dns2x4Ftr* 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 
bbf_L04Dns2x4Ftr_copy(struct bbs_Context * cpA,struct bbf_L04Dns2x4Ftr * ptrA,const struct bbf_L04Dns2x4Ftr * srcPtrA)71 void bbf_L04Dns2x4Ftr_copy( struct bbs_Context* cpA,
72 						    struct bbf_L04Dns2x4Ftr* ptrA,
73 						    const struct bbf_L04Dns2x4Ftr* 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 
bbf_L04Dns2x4Ftr_equal(struct bbs_Context * cpA,const struct bbf_L04Dns2x4Ftr * ptrA,const struct bbf_L04Dns2x4Ftr * srcPtrA)82 flag bbf_L04Dns2x4Ftr_equal( struct bbs_Context* cpA,
83 						     const struct bbf_L04Dns2x4Ftr* ptrA,
84 						     const struct bbf_L04Dns2x4Ftr* 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 
bbf_L04Dns2x4Ftr_memSize(struct bbs_Context * cpA,const struct bbf_L04Dns2x4Ftr * ptrA)118 uint32 bbf_L04Dns2x4Ftr_memSize( struct bbs_Context* cpA,
119 							     const struct bbf_L04Dns2x4Ftr* 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 
bbf_L04Dns2x4Ftr_memWrite(struct bbs_Context * cpA,const struct bbf_L04Dns2x4Ftr * ptrA,uint16 * memPtrA)133 uint32 bbf_L04Dns2x4Ftr_memWrite( struct bbs_Context* cpA,
134 							      const struct bbf_L04Dns2x4Ftr* ptrA,
135 								  uint16* memPtrA )
136 {
137 	uint32 memSizeL = bbf_L04Dns2x4Ftr_memSize( cpA, ptrA );
138 	memPtrA += bbs_memWrite32( &memSizeL, memPtrA );
139 	memPtrA += bbs_memWriteUInt32( bbf_L04_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 
bbf_L04Dns2x4Ftr_memRead(struct bbs_Context * cpA,struct bbf_L04Dns2x4Ftr * ptrA,const uint16 * memPtrA,struct bbs_MemTbl * mtpA)148 uint32 bbf_L04Dns2x4Ftr_memRead( struct bbs_Context* cpA,
149 							     struct bbf_L04Dns2x4Ftr* 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_L04_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_L04Dns2x4Ftr_memSize( cpA, ptrA ) )
163 	{
164 		bbs_ERR0( bbs_ERR_CORRUPT_DATA, "uint32 bbf_L04Dns2x4Ftr_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 
bbf_L04Dns2x4Ftr_activity(const struct bbf_Feature * ptrA,const uint32 * patchA)182 int32 bbf_L04Dns2x4Ftr_activity( const struct bbf_Feature* ptrA, const uint32* patchA )
183 {
184 	const struct bbf_L04Dns2x4Ftr* ptrL = ( struct bbf_L04Dns2x4Ftr* )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 
193 	uint32 borderMaskL = ( ( uint32 )1 << hL ) - 1;
194 
195 	uint32 sL[ 8 ];
196 	uint32 mL[ 4 ];
197 	uint32 bL[ 4 ] = { 0, 0, 0, 0 }; /* bit sum */
198 
199 	for( iL = 0; iL < wL; iL++ )
200 	{
201 		uint32 s1L = patchA[ iL     ];
202 		uint32 s2L = patchA[ iL + 1 ];
203 
204 		/* comparison of pixels with patchHeightE - 3 features */
205 		sL[ 0 ] = ( ( s1L      ) ^ dataPtrL[ 0 ] ) & borderMaskL;
206 		sL[ 1 ] = ( ( s1L >> 1 ) ^ dataPtrL[ 1 ] ) & borderMaskL;
207 		sL[ 2 ] = ( ( s1L >> 2 ) ^ dataPtrL[ 2 ] ) & borderMaskL;
208 		sL[ 3 ] = ( ( s1L >> 3 ) ^ dataPtrL[ 3 ] ) & borderMaskL;
209 
210 		sL[ 4 ] = ( ( s2L      ) ^ dataPtrL[ 4 ] ) & borderMaskL;
211 		sL[ 5 ] = ( ( s2L >> 1 ) ^ dataPtrL[ 5 ] ) & borderMaskL;
212 		sL[ 6 ] = ( ( s2L >> 2 ) ^ dataPtrL[ 6 ] ) & borderMaskL;
213 		sL[ 7 ] = ( ( s2L >> 3 ) ^ dataPtrL[ 7 ] ) & borderMaskL;
214 
215 		/* parallel bit counting of patchHeightE - 3 features */
216 		mL[ 0 ] = ( ( sL[ 0 ] & 0x11111111 ) + ( sL[ 1 ] & 0x11111111 ) +
217 					( sL[ 2 ] & 0x11111111 ) + ( sL[ 3 ] & 0x11111111 ) +
218 				    ( sL[ 4 ] & 0x11111111 ) + ( sL[ 5 ] & 0x11111111 ) +
219 					( sL[ 6 ] & 0x11111111 ) + ( sL[ 7 ] & 0x11111111 ) );
220 
221 		mL[ 1 ] = ( ( sL[ 0 ] & 0x22222222 ) + ( sL[ 1 ] & 0x22222222 ) +
222 					( sL[ 2 ] & 0x22222222 ) + ( sL[ 3 ] & 0x22222222 ) +
223 				    ( sL[ 4 ] & 0x22222222 ) + ( sL[ 5 ] & 0x22222222 ) +
224 					( sL[ 6 ] & 0x22222222 ) + ( sL[ 7 ] & 0x22222222 ) ) >> 1;
225 
226 		mL[ 2 ] = ( ( sL[ 0 ] & 0x44444444 ) + ( sL[ 1 ] & 0x44444444 ) +
227 					( sL[ 2 ] & 0x44444444 ) + ( sL[ 3 ] & 0x44444444 ) +
228 				    ( sL[ 4 ] & 0x44444444 ) + ( sL[ 5 ] & 0x44444444 ) +
229 					( sL[ 6 ] & 0x44444444 ) + ( sL[ 7 ] & 0x44444444 ) ) >> 2;
230 
231 		mL[ 3 ] = ( ( sL[ 0 ] & 0x88888888 ) + ( sL[ 1 ] & 0x88888888 ) +
232 					( sL[ 2 ] & 0x88888888 ) + ( sL[ 3 ] & 0x88888888 ) +
233 				    ( sL[ 4 ] & 0x88888888 ) + ( sL[ 5 ] & 0x88888888 ) +
234 					( sL[ 6 ] & 0x88888888 ) + ( sL[ 7 ] & 0x88888888 ) ) >> 3;
235 
236 		/* parallel comparison with thresholds and packing of results into bit array of size patchHeightE - 3 */
237 		{
238 			uint32 vL = 0;
239 			vL |= ( ( mL[ 0 ] + dataPtrL[  8 ] ) & 0x88888888 ) >> 3;
240 			vL |= ( ( mL[ 1 ] + dataPtrL[  9 ] ) & 0x88888888 ) >> 2;
241 			vL |= ( ( mL[ 2 ] + dataPtrL[ 10 ] ) & 0x88888888 ) >> 1;
242 			vL |= ( ( mL[ 3 ] + dataPtrL[ 11 ] ) & 0x88888888 );
243 
244 			vL = ( ~vL ) & 0x1FFFFFFF;
245 
246 			/* mask out and count bits */
247 			{
248 				uint32 vmL;
249 				vmL = vL & dataPtrL[ 12 ];
250 				bL[ 0 ] += bbf_BIT_SUM_32( vmL );
251 				vmL = vL & dataPtrL[ 13 ];
252 				bL[ 1 ] += bbf_BIT_SUM_32( vmL);
253 				vmL = vL & dataPtrL[ 14 ];
254 				bL[ 2 ] += bbf_BIT_SUM_32( vmL );
255 				vmL = vL & dataPtrL[ 15 ];
256 				bL[ 3 ] += bbf_BIT_SUM_32( vmL );
257 			}
258 
259 			dataPtrL += 16;
260 		}
261 	}
262 
263 	/* compute final activity */
264 	{
265 		uint32 actL = ( ( bL[ 0 ] << 3 ) + ( bL[ 1 ] << 2 ) + ( bL[ 2 ] << 1 ) + bL[ 3 ] );
266 		return actL * ptrL->activityFactorE;
267 	}
268 }
269 
270 /* ------------------------------------------------------------------------- */
271 
272 /* ========================================================================= */
273 
274