rsElement.h revision 8154954868694e1f233d87d4933a474518b1cb81 
1/*
2 * Copyright (C) 2009 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 ANDROID_STRUCTURED_ELEMENT_H
18#define ANDROID_STRUCTURED_ELEMENT_H
19
20#include "rsComponent.h"
21#include "rsUtils.h"
22#include "rsObjectBase.h"
23
24// ---------------------------------------------------------------------------
25namespace android {
26namespace renderscript {
27
28
29// An element is a group of Components that occupies one cell in a structure.
30class Element : public ObjectBase
31{
32public:
33    ~Element();
34
35    uint32_t getGLType() const;
36    uint32_t getGLFormat() const;
37
38    size_t getSizeBits() const;
39    size_t getSizeBytes() const {
40        return (getSizeBits() + 7) >> 3;
41    }
42
43    size_t getFieldOffsetBits(uint32_t componentNumber) const;
44    size_t getFieldOffsetBytes(uint32_t componentNumber) const {
45        return (getFieldOffsetBits(componentNumber) + 7) >> 3;
46    }
47
48    uint32_t getFieldCount() const {return mFieldCount;}
49    const Element * getField(uint32_t idx) const {return mFields[idx].e.get();}
50    const char * getFieldName(uint32_t idx) const {return mFields[idx].name.string();}
51
52    const Component & getComponent() const {return mComponent;}
53    RsDataType getType() const {return mComponent.getType();}
54    RsDataKind getKind() const {return mComponent.getKind();}
55    uint32_t getBits() const {return mBits;}
56
57    String8 getCType(uint32_t indent=0) const;
58    String8 getCStructBody(uint32_t indent=0) const;
59    String8 getGLSLType(uint32_t indent=0) const;
60
61    void dumpLOGV(const char *prefix) const;
62
63    static const Element * create(Context *rsc, RsDataType dt, RsDataKind dk,
64                            bool isNorm, uint32_t vecSize);
65    static const Element * create(Context *rsc, size_t count, const Element **,
66                            const char **, const size_t * lengths);
67
68protected:
69    // deallocate any components that are part of this element.
70    void clear();
71
72    typedef struct {
73        String8 name;
74        ObjectBaseRef<const Element> e;
75    } ElementField_t;
76    ElementField_t *mFields;
77    size_t mFieldCount;
78
79
80    Element(Context *);
81
82    Component mComponent;
83    uint32_t mBits;
84};
85
86
87class ElementState {
88public:
89    ElementState();
90    ~ElementState();
91
92    // Cache of all existing elements.
93    Vector<const Element *> mElements;
94};
95
96
97}
98}
99#endif //ANDROID_STRUCTURED_ELEMENT_H
100