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_FLT16ALT2D_EM_H
18#define bts_FLT16ALT2D_EM_H
19
20/* ---- includes ----------------------------------------------------------- */
21
22#include "b_BasicEm/Context.h"
23#include "b_BasicEm/Basic.h"
24#include "b_TensorEm/Flt16Mat2D.h"
25#include "b_TensorEm/Flt16Vec2D.h"
26
27/* ---- related objects  --------------------------------------------------- */
28
29/* ---- typedefs ----------------------------------------------------------- */
30
31/* ---- constants ---------------------------------------------------------- */
32
33/* ---- object definition -------------------------------------------------- */
34
35/** 2d affine linear trafo */
36struct bts_Flt16Alt2D
37{
38
39	/* ---- private data --------------------------------------------------- */
40
41	/* ---- public data ---------------------------------------------------- */
42
43	/** matrix */
44	struct bts_Flt16Mat2D matE;
45
46	/** vector */
47	struct bts_Flt16Vec2D vecE;
48};
49
50/* ---- associated objects ------------------------------------------------- */
51
52/* ---- external functions ------------------------------------------------- */
53
54/* ---- \ghd{ constructor/destructor } ------------------------------------- */
55
56/** initializes alt */
57void bts_Flt16Alt2D_init( struct bts_Flt16Alt2D* ptrA );
58
59/** destroys alt */
60void bts_Flt16Alt2D_exit( struct bts_Flt16Alt2D* ptrA );
61
62/* ---- \ghd{ operators } -------------------------------------------------- */
63
64/** copy operator */
65void bts_Flt16Alt2D_copy( struct bts_Flt16Alt2D* ptrA,
66						  const struct bts_Flt16Alt2D* srcPtrA );
67
68/** equal operator */
69flag bts_Flt16Alt2D_equal( const struct bts_Flt16Alt2D* ptrA,
70						   const struct bts_Flt16Alt2D* srcPtrA );
71
72/* ---- \ghd{ query functions } -------------------------------------------- */
73
74/* ---- \ghd{ modify functions } ------------------------------------------- */
75
76/* ---- \ghd{ memory I/O } ------------------------------------------------- */
77
78/** size object needs when written to memory */
79uint32 bts_Flt16Alt2D_memSize( struct bbs_Context* cpA,
80							   const struct bts_Flt16Alt2D* ptrA );
81
82/** writes object to memory; returns number of bytes written */
83uint32 bts_Flt16Alt2D_memWrite( struct bbs_Context* cpA,
84							    const struct bts_Flt16Alt2D* ptrA,
85								uint16* memPtrA );
86
87/** reads object from memory; returns number of bytes read */
88uint32 bts_Flt16Alt2D_memRead( struct bbs_Context* cpA,
89							   struct bts_Flt16Alt2D* ptrA,
90							   const uint16* memPtrA );
91
92/* ---- \ghd{ exec functions } --------------------------------------------- */
93
94/** inverts alt */
95void bts_Flt16Alt2D_invert( struct bts_Flt16Alt2D* ptrA );
96
97/** returns inverted alt */
98struct bts_Flt16Alt2D bts_Flt16Alt2D_inverted( const struct bts_Flt16Alt2D* ptrA );
99
100/** creates identity alt */
101struct bts_Flt16Alt2D bts_Flt16Alt2D_createIdentity( void );
102
103/** creates rotation alt */
104struct bts_Flt16Alt2D bts_Flt16Alt2D_createRotation( phase16 angleA,
105													 const struct bts_Flt16Vec2D* centerPtrA );
106
107/** creates scale alt */
108struct bts_Flt16Alt2D bts_Flt16Alt2D_createScale( int32 scaleA,
109												  int32 scaleBbpA,
110												  const struct bts_Flt16Vec2D* centerPtrA );
111
112/** creates rigid alt (scale & rotation) */
113struct bts_Flt16Alt2D bts_Flt16Alt2D_createRigid( phase16 angleA,
114												  int32 scaleA,
115												  int32 scaleBbpA,
116												  const struct bts_Flt16Vec2D* centerPtrA );
117
118/** creates rigid alt (scale & rotation) that mapps vecIn1 and vecIn2 to vecOut1 and vecOut2*/
119struct bts_Flt16Alt2D bts_Flt16Alt2D_createRigidMap( struct bts_Flt16Vec2D vecIn1A,
120												     struct bts_Flt16Vec2D vecIn2A,
121												     struct bts_Flt16Vec2D vecOut1A,
122												     struct bts_Flt16Vec2D vecOut2A );
123
124/** creates alt from 16 bit values */
125struct bts_Flt16Alt2D bts_Flt16Alt2D_create16( int16 xxA,
126											   int16 xyA,
127											   int16 yxA,
128											   int16 yyA,
129											   int16 matBbpA,
130											   int16 xA,
131											   int16 yA,
132											   int16 vecBbpA );
133
134/** creates alt from 32 bit values (automatic adjustment of bbp value) */
135struct bts_Flt16Alt2D bts_Flt16Alt2D_create32( int32 xxA,
136											   int32 xyA,
137											   int32 yxA,
138											   int32 yyA,
139											   int32 matBbpA,
140											   int32 xA,
141											   int32 yA,
142											   int32 vecBbpA );
143
144/** Multiplies matrix with float vecA; returns resulting vector.
145 *  bbp can get changed.
146 */
147struct bts_Flt16Vec2D bts_Flt16Alt2D_mapFlt( const struct bts_Flt16Alt2D* matPtrA,
148								             const struct bts_Flt16Vec2D* vecPtrA );
149
150/** multiplies alt with altA returns resulting alt */
151struct bts_Flt16Alt2D bts_Flt16Alt2D_mul( const struct bts_Flt16Alt2D* alt1PtrA,
152								          const struct bts_Flt16Alt2D* alt2PtrA );
153
154/** multiplies alt with matA; returns pointer to resulting alt */
155struct bts_Flt16Alt2D* bts_Flt16Alt2D_mulTo( struct bts_Flt16Alt2D* alt1PtrA,
156				                             const struct bts_Flt16Alt2D* alt2PtrA );
157
158#endif /* bts_FLT16ALT2D_EM_H */
159
160