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 */
36struct 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 */
66void bts_Flt16Mat2D_init( struct bts_Flt16Mat2D* ptrA );
67
68/** destroys matrix */
69void bts_Flt16Mat2D_exit( struct bts_Flt16Mat2D* ptrA );
70
71/* ---- \ghd{ operators } -------------------------------------------------- */
72
73/** copy operator */
74void bts_Flt16Mat2D_copy( struct bts_Flt16Mat2D* ptrA, const struct bts_Flt16Mat2D* srcPtrA );
75
76/** equal operator */
77flag 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 */
88uint32 bts_Flt16Mat2D_det( const struct bts_Flt16Mat2D* ptrA );
89
90/** inverts matrix */
91void bts_Flt16Mat2D_invert( struct bts_Flt16Mat2D* ptrA );
92
93/** returns inverted matrix */
94struct bts_Flt16Mat2D bts_Flt16Mat2D_inverted( const struct bts_Flt16Mat2D* ptrA );
95
96/** creates identity matrix */
97struct bts_Flt16Mat2D bts_Flt16Mat2D_createIdentity( void );
98
99/** creates rotation matrix */
100struct bts_Flt16Mat2D bts_Flt16Mat2D_createRotation( phase16 angleA );
101
102/** creates scale matrix */
103struct bts_Flt16Mat2D bts_Flt16Mat2D_createScale( int32 scaleA, int32 scaleBbpA );
104
105/** creates rigid matrix (scale & rotation) */
106struct bts_Flt16Mat2D bts_Flt16Mat2D_createRigid( phase16 angleA, int32 scaleA, int32 scaleBbpA );
107
108/** creates matrix from 16 bit values */
109struct 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) */
112struct bts_Flt16Mat2D bts_Flt16Mat2D_create32( int32 xxA, int32 xyA, int32 yxA, int32 yyA, int32 bbpA );
113
114/** scales matrix by a factor */
115void bts_Flt16Mat2D_scale( struct bts_Flt16Mat2D* ptrA, int32 scaleA, int32 scaleBbpA );
116
117/** multiplies matrix with vecA; returns resulting vector */
118struct 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. */
122struct 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 */
126struct 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 */
130struct bts_Flt16Mat2D* bts_Flt16Mat2D_mulTo( struct bts_Flt16Mat2D* mat1PtrA,
131				                             const struct bts_Flt16Mat2D* mat2PtrA );
132
133#endif /* bts_FLT16MAT2D_EM_H */
134
135