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gerrit-public.fairphone.software / platform / external / neven / 7f81d9b6fa7f2ec161b682622db577a28c90b49f / . / Embedded / common / src / b_BitFeatureEm / L01Dns2x4Ftr.c
blob: 5198c65d1623babbc9a23c6ca3e4dc6956978390 [file] [log] [blame]
The Android Open Source Project7f81d9b2009-03-03 19:30:08 -0800[diff] [blame^]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
41void 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
53void 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
71void 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
82flag 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
118uint32 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
133uint32 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
148uint32 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
182int32 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