auto import from //depot/cupcake/@135843
[android/platform/external/neven.git] / Embedded / common / src / b_BitFeatureEm / L04Dns2x4Ftr.c
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
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
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
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
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         
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         
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
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
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