auto import from //depot/cupcake/@135843
[android/platform/external/neven.git] / Embedded / common / src / b_BitFeatureEm / L04Dns2x2Ftr.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/L04Dns2x2Ftr.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_L04Dns2x2Ftr_init( struct bbs_Context* cpA,
42                                                     struct bbf_L04Dns2x2Ftr* ptrA )
43 {
44         bbf_Feature_init( cpA, &ptrA->baseE );
45         ptrA->baseE.typeE = ( uint32 )bbf_FT_L04_DNS_2X2_FTR;
46         ptrA->baseE.vpActivityE = bbf_L04Dns2x2Ftr_activity;
47         bbs_UInt32Arr_init( cpA, &ptrA->dataArrE );
48         ptrA->wShiftE = 0;
49         ptrA->activityFactorE = 0;
50 }
51
52 /* ------------------------------------------------------------------------- */
53
54 void bbf_L04Dns2x2Ftr_exit( struct bbs_Context* cpA,
55                                                     struct bbf_L04Dns2x2Ftr* ptrA )
56 {
57         bbf_Feature_exit( cpA, &ptrA->baseE );
58         bbs_UInt32Arr_exit( cpA, &ptrA->dataArrE );
59         ptrA->wShiftE = 0;
60         ptrA->activityFactorE = 0;
61 }
62
63 /* ------------------------------------------------------------------------- */
64
65 /* ========================================================================= */
66 /*                                                                           */
67 /* ---- \ghd{ operators } -------------------------------------------------- */
68 /*                                                                           */
69 /* ========================================================================= */
70
71 /* ------------------------------------------------------------------------- */
72
73 void bbf_L04Dns2x2Ftr_copy( struct bbs_Context* cpA,
74                                                     struct bbf_L04Dns2x2Ftr* ptrA, 
75                                                     const struct bbf_L04Dns2x2Ftr* srcPtrA )
76 {
77         bbf_Feature_copy( cpA, &ptrA->baseE, &srcPtrA->baseE );
78         bbs_UInt32Arr_copy( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE );
79         ptrA->wShiftE = srcPtrA->wShiftE;
80         ptrA->activityFactorE = srcPtrA->activityFactorE;
81 }
82
83 /* ------------------------------------------------------------------------- */
84
85 flag bbf_L04Dns2x2Ftr_equal( struct bbs_Context* cpA,
86                                                      const struct bbf_L04Dns2x2Ftr* ptrA, 
87                                                      const struct bbf_L04Dns2x2Ftr* srcPtrA )
88 {
89         if( !bbf_Feature_equal( cpA, &ptrA->baseE, &srcPtrA->baseE ) ) return FALSE;
90         if( !bbs_UInt32Arr_equal( cpA, &ptrA->dataArrE, &srcPtrA->dataArrE ) ) return FALSE;
91         if( ptrA->wShiftE != srcPtrA->wShiftE ) return FALSE;
92         if( ptrA->activityFactorE != srcPtrA->activityFactorE ) return FALSE;
93         return TRUE;
94 }
95
96 /* ------------------------------------------------------------------------- */
97
98 /* ========================================================================= */
99 /*                                                                           */
100 /* ---- \ghd{ query functions } -------------------------------------------- */
101 /*                                                                           */
102 /* ========================================================================= */
103
104 /* ------------------------------------------------------------------------- */
105
106 /* ========================================================================= */
107 /*                                                                           */
108 /* ---- \ghd{ modify functions } ------------------------------------------- */
109 /*                                                                           */
110 /* ========================================================================= */
111
112 /* ------------------------------------------------------------------------- */
113         
114 /* ========================================================================= */
115 /*                                                                           */
116 /* ---- \ghd{ I/O } -------------------------------------------------------- */
117 /*                                                                           */
118 /* ========================================================================= */
119
120 /* ------------------------------------------------------------------------- */
121         
122 uint32 bbf_L04Dns2x2Ftr_memSize( struct bbs_Context* cpA,
123                                                              const struct bbf_L04Dns2x2Ftr* ptrA )
124 {
125         uint32 memSizeL = bbs_SIZEOF16( uint32 ) +
126                                           bbs_SIZEOF16( uint32 ); /* version */
127
128         memSizeL += bbf_Feature_memSize( cpA, &ptrA->baseE );
129         memSizeL += bbs_UInt32Arr_memSize( cpA, &ptrA->dataArrE );
130         memSizeL += bbs_SIZEOF16( ptrA->wShiftE );
131         memSizeL += bbs_SIZEOF16( ptrA->activityFactorE );
132
133         return memSizeL; 
134 }
135
136 /* ------------------------------------------------------------------------- */
137         
138 uint32 bbf_L04Dns2x2Ftr_memWrite( struct bbs_Context* cpA,
139                                                               const struct bbf_L04Dns2x2Ftr* ptrA, 
140                                                                   uint16* memPtrA )
141 {
142         uint32 memSizeL = bbf_L04Dns2x2Ftr_memSize( cpA, ptrA );
143         memPtrA += bbs_memWrite32( &memSizeL, memPtrA );
144         memPtrA += bbs_memWriteUInt32( bbf_L04_DNS_2X2_FTR_VERSION, memPtrA );
145         memPtrA += bbf_Feature_memWrite( cpA, &ptrA->baseE, memPtrA );
146         memPtrA += bbs_UInt32Arr_memWrite( cpA, &ptrA->dataArrE, memPtrA );
147         memPtrA += bbs_memWrite32( &ptrA->wShiftE, memPtrA );
148         memPtrA += bbs_memWrite32( &ptrA->activityFactorE, memPtrA );
149         return memSizeL;
150 }
151
152 /* ------------------------------------------------------------------------- */
153
154 uint32 bbf_L04Dns2x2Ftr_memRead( struct bbs_Context* cpA,
155                                                              struct bbf_L04Dns2x2Ftr* ptrA, 
156                                                              const uint16* memPtrA, 
157                                                              struct bbs_MemTbl* mtpA )
158 {
159         uint32 memSizeL, versionL;
160         struct bbs_MemTbl memTblL = *mtpA;
161         struct bbs_MemSeg* espL = bbs_MemTbl_fastestSegPtr( cpA, &memTblL, 0 );
162         if( bbs_Context_error( cpA ) ) return 0;
163         memPtrA += bbs_memRead32( &memSizeL, memPtrA );
164         memPtrA += bbs_memReadVersion32( cpA, &versionL, bbf_L04_DNS_2X2_FTR_VERSION, memPtrA );
165         memPtrA += bbf_Feature_memRead( cpA, &ptrA->baseE, memPtrA );
166         memPtrA += bbs_UInt32Arr_memRead( cpA, &ptrA->dataArrE, memPtrA, espL );
167         memPtrA += bbs_memRead32( &ptrA->wShiftE, memPtrA );
168         memPtrA += bbs_memRead32( &ptrA->activityFactorE, memPtrA );
169         if( memSizeL != bbf_L04Dns2x2Ftr_memSize( cpA, ptrA ) )
170         {
171                 bbs_ERR0( bbs_ERR_CORRUPT_DATA, "uint32 bbf_L04Dns2x2Ftr_memRead( struct bem_ScanGradientMove* ptrA, const uint16* memPtrA ):\n"
172                                 "size mismatch" );
173                 return 0;
174         }
175
176         return memSizeL;
177 }
178
179 /* ------------------------------------------------------------------------- */
180         
181 /* ========================================================================= */
182 /*                                                                           */
183 /* ---- \ghd{ exec functions } --------------------------------------------- */
184 /*                                                                           */
185 /* ========================================================================= */
186         
187 /* ------------------------------------------------------------------------- */
188
189 int32 bbf_L04Dns2x2Ftr_activity( const struct bbf_Feature* ptrA, const uint32* patchA )
190 {
191         const struct bbf_L04Dns2x2Ftr* ptrL = ( struct bbf_L04Dns2x2Ftr* )ptrA;
192
193         uint32 wL = ptrL->baseE.patchWidthE - 1;
194     uint32 hL = ptrL->baseE.patchHeightE - 1;
195
196         const uint32* dataPtrL = ptrL->dataArrE.arrPtrE;
197         uint32 iL;
198
199         uint32 borderMaskL = ( ( uint32 )1 << hL ) - 1;
200         const uint32* patchL = patchA;
201         int32 sumL = 0;
202
203         uint32 bL[ 4 ] = { 0, 0, 0, 0 }; /* bit sum */
204
205         for( iL = 0; iL < wL; iL++ )
206         {
207                 uint32 vL = (   patchL[ 0 ]        ^ dataPtrL[ 0 ] ) & 
208                                     ( ( patchL[ 0 ] >> 1 ) ^ dataPtrL[ 1 ] ) &
209                                     ( ( patchL[ 1 ]      ) ^ dataPtrL[ 2 ] ) &
210                                     ( ( patchL[ 1 ] >> 1 ) ^ dataPtrL[ 3 ] ) & borderMaskL;
211
212
213                 {
214                         uint32 vmL;
215                         vmL = vL & dataPtrL[ 4 ];
216                         bL[ 0 ] += bbf_BIT_SUM_32( vmL );
217                         vmL = vL & dataPtrL[ 5 ];
218                         bL[ 1 ] += bbf_BIT_SUM_32( vmL);
219                         vmL = vL & dataPtrL[ 6 ];
220                         bL[ 2 ] += bbf_BIT_SUM_32( vmL );
221                         vmL = vL & dataPtrL[ 7 ];
222                         bL[ 3 ] += bbf_BIT_SUM_32( vmL );
223                 }
224
225                 sumL += bbf_BIT_SUM_32( vL );
226
227                 patchL++;
228                 dataPtrL += 8;
229         }
230
231         /* compute final activity */
232         {
233                 uint32 actL = ( ( bL[ 0 ] << 3 ) + ( bL[ 1 ] << 2 ) + ( bL[ 2 ] << 1 ) + bL[ 3 ] );
234                 return actL * ptrL->activityFactorE + sumL * ptrL->wShiftE;
235         }
236 }
237
238 /* ------------------------------------------------------------------------- */
239
240 /* ========================================================================= */
241