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 #ifndef bts_FLT16MAT2D_EM_H
18 #define bts_FLT16MAT2D_EM_H
19 
20 /* ---- includes ----------------------------------------------------------- */
21 
22 #include "b_BasicEm/Basic.h"
23 #include "b_BasicEm/Phase.h"
24 #include "b_TensorEm/Int16Vec2D.h"
25 #include "b_TensorEm/Flt16Vec2D.h"
26 
27 /* ---- related objects  --------------------------------------------------- */
28 
29 /* ---- typedefs ----------------------------------------------------------- */
30 
31 /* ---- constants ---------------------------------------------------------- */
32 
33 /* ---- object definition -------------------------------------------------- */
34 
35 /** 2d matrix with floating point */
36 struct bts_Flt16Mat2D
37 {
38 
39 	/* ---- private data --------------------------------------------------- */
40 
41 	/* ---- public data ---------------------------------------------------- */
42 
43 	/** xx component */
44 	int16 xxE;
45 
46 	/** xy component */
47 	int16 xyE;
48 
49 	/** yx component */
50 	int16 yxE;
51 
52 	/** yy component */
53 	int16 yyE;
54 
55 	/** point position */
56 	int16 bbpE;
57 };
58 
59 /* ---- associated objects ------------------------------------------------- */
60 
61 /* ---- external functions ------------------------------------------------- */
62 
63 /* ---- \ghd{ constructor/destructor } ------------------------------------- */
64 
65 /** initializes matrix */
66 void bts_Flt16Mat2D_init( struct bts_Flt16Mat2D* ptrA );
67 
68 /** destroys matrix */
69 void bts_Flt16Mat2D_exit( struct bts_Flt16Mat2D* ptrA );
70 
71 /* ---- \ghd{ operators } -------------------------------------------------- */
72 
73 /** copy operator */
74 void bts_Flt16Mat2D_copy( struct bts_Flt16Mat2D* ptrA, const struct bts_Flt16Mat2D* srcPtrA );
75 
76 /** equal operator */
77 flag bts_Flt16Mat2D_equal( const struct bts_Flt16Mat2D* ptrA, const struct bts_Flt16Mat2D* srcPtrA );
78 
79 /* ---- \ghd{ query functions } -------------------------------------------- */
80 
81 /* ---- \ghd{ modify functions } ------------------------------------------- */
82 
83 /* ---- \ghd{ memory I/O } ------------------------------------------------- */
84 
85 /* ---- \ghd{ exec functions } --------------------------------------------- */
86 
87 /** returns determinate of matrix; return bbp is  ptrA->bbpE * 2 */
88 uint32 bts_Flt16Mat2D_det( const struct bts_Flt16Mat2D* ptrA );
89 
90 /** inverts matrix */
91 void bts_Flt16Mat2D_invert( struct bts_Flt16Mat2D* ptrA );
92 
93 /** returns inverted matrix */
94 struct bts_Flt16Mat2D bts_Flt16Mat2D_inverted( const struct bts_Flt16Mat2D* ptrA );
95 
96 /** creates identity matrix */
97 struct bts_Flt16Mat2D bts_Flt16Mat2D_createIdentity( void );
98 
99 /** creates rotation matrix */
100 struct bts_Flt16Mat2D bts_Flt16Mat2D_createRotation( phase16 angleA );
101 
102 /** creates scale matrix */
103 struct bts_Flt16Mat2D bts_Flt16Mat2D_createScale( int32 scaleA, int32 scaleBbpA );
104 
105 /** creates rigid matrix (scale & rotation) */
106 struct bts_Flt16Mat2D bts_Flt16Mat2D_createRigid( phase16 angleA, int32 scaleA, int32 scaleBbpA );
107 
108 /** creates matrix from 16 bit values */
109 struct bts_Flt16Mat2D bts_Flt16Mat2D_create16( int16 xxA, int16 xyA, int16 yxA, int16 yyA, int16 bbpA );
110 
111 /** creates matrix from 32 bit values (automatic adjustment of bbp value) */
112 struct bts_Flt16Mat2D bts_Flt16Mat2D_create32( int32 xxA, int32 xyA, int32 yxA, int32 yyA, int32 bbpA );
113 
114 /** scales matrix by a factor */
115 void bts_Flt16Mat2D_scale( struct bts_Flt16Mat2D* ptrA, int32 scaleA, int32 scaleBbpA );
116 
117 /** multiplies matrix with vecA; returns resulting vector */
118 struct bts_Int16Vec2D bts_Flt16Mat2D_map( const struct bts_Flt16Mat2D* matPtrA,
119 								          const struct bts_Int16Vec2D* vecPtrA );
120 
121 /** Multiplies matrix with float vecA; returns resulting vector. */
122 struct bts_Flt16Vec2D bts_Flt16Mat2D_mapFlt( const struct bts_Flt16Mat2D* matPtrA,
123 								             const struct bts_Flt16Vec2D* vecPtrA );
124 
125 /** multiplies matrix with matA; returns resulting matrix */
126 struct bts_Flt16Mat2D bts_Flt16Mat2D_mul( const struct bts_Flt16Mat2D* mat1PtrA,
127 								          const struct bts_Flt16Mat2D* mat2PtrA );
128 
129 /** multiplies matrix with matA; returns pointer to resulting matrix */
130 struct bts_Flt16Mat2D* bts_Flt16Mat2D_mulTo( struct bts_Flt16Mat2D* mat1PtrA,
131 				                             const struct bts_Flt16Mat2D* mat2PtrA );
132 
133 #endif /* bts_FLT16MAT2D_EM_H */
134 
135