Sampler.java revision 0de9444aa6c25d2c586e8204a6168d10e67376e0 
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
17package android.renderscript;
18
19
20import java.io.IOException;
21import java.io.InputStream;
22
23import android.content.res.Resources;
24import android.os.Bundle;
25import android.util.Config;
26import android.util.Log;
27
28import android.graphics.Bitmap;
29import android.graphics.BitmapFactory;
30
31/**
32 * @hide
33 *
34 **/
35public class Sampler extends BaseObj {
36    public enum Value {
37        NEAREST (0),
38        LINEAR (1),
39        LINEAR_MIP_LINEAR (2),
40        WRAP (3),
41        CLAMP (4);
42
43        int mID;
44        Value(int id) {
45            mID = id;
46        }
47    }
48
49    Sampler(int id, RenderScript rs) {
50        super(id, rs);
51    }
52
53    Sampler mSampler_CLAMP_NEAREST;
54    Sampler mSampler_CLAMP_LINEAR;
55    Sampler mSampler_CLAMP_LINEAR_MIP;
56    Sampler mSampler_WRAP_NEAREST;
57    Sampler mSampler_WRAP_LINEAR;
58    Sampler mSampler_WRAP_LINEAR_MIP;
59
60    public static Sampler CLAMP_NEAREST(RenderScript rs) {
61        if(rs.mSampler_CLAMP_NEAREST == null) {
62            Builder b = new Builder(rs);
63            b.setMin(Value.NEAREST);
64            b.setMag(Value.NEAREST);
65            b.setWrapS(Value.CLAMP);
66            b.setWrapT(Value.CLAMP);
67            rs.mSampler_CLAMP_NEAREST = b.create();
68        }
69        return rs.mSampler_CLAMP_NEAREST;
70    }
71
72    public static Sampler CLAMP_LINEAR(RenderScript rs) {
73        if(rs.mSampler_CLAMP_LINEAR == null) {
74            Builder b = new Builder(rs);
75            b.setMin(Value.LINEAR);
76            b.setMag(Value.LINEAR);
77            b.setWrapS(Value.CLAMP);
78            b.setWrapT(Value.CLAMP);
79            rs.mSampler_CLAMP_LINEAR = b.create();
80        }
81        return rs.mSampler_CLAMP_LINEAR;
82    }
83
84    public static Sampler CLAMP_LINEAR_MIP_LINEAR(RenderScript rs) {
85        if(rs.mSampler_CLAMP_LINEAR_MIP_LINEAR == null) {
86            Builder b = new Builder(rs);
87            b.setMin(Value.LINEAR_MIP_LINEAR);
88            b.setMag(Value.LINEAR_MIP_LINEAR);
89            b.setWrapS(Value.CLAMP);
90            b.setWrapT(Value.CLAMP);
91            rs.mSampler_CLAMP_LINEAR_MIP_LINEAR = b.create();
92        }
93        return rs.mSampler_CLAMP_LINEAR_MIP_LINEAR;
94    }
95
96    public static Sampler WRAP_NEAREST(RenderScript rs) {
97        if(rs.mSampler_WRAP_NEAREST == null) {
98            Builder b = new Builder(rs);
99            b.setMin(Value.NEAREST);
100            b.setMag(Value.NEAREST);
101            b.setWrapS(Value.WRAP);
102            b.setWrapT(Value.WRAP);
103            rs.mSampler_WRAP_NEAREST = b.create();
104        }
105        return rs.mSampler_WRAP_NEAREST;
106    }
107
108    public static Sampler WRAP_LINEAR(RenderScript rs) {
109        if(rs.mSampler_WRAP_LINEAR == null) {
110            Builder b = new Builder(rs);
111            b.setMin(Value.LINEAR);
112            b.setMag(Value.LINEAR);
113            b.setWrapS(Value.WRAP);
114            b.setWrapT(Value.WRAP);
115            rs.mSampler_WRAP_LINEAR = b.create();
116        }
117        return rs.mSampler_WRAP_LINEAR;
118    }
119
120    public static Sampler WRAP_LINEAR_MIP_LINEAR(RenderScript rs) {
121        if(rs.mSampler_WRAP_LINEAR_MIP_LINEAR == null) {
122            Builder b = new Builder(rs);
123            b.setMin(Value.LINEAR_MIP_LINEAR);
124            b.setMag(Value.LINEAR_MIP_LINEAR);
125            b.setWrapS(Value.WRAP);
126            b.setWrapT(Value.WRAP);
127            rs.mSampler_WRAP_LINEAR_MIP_LINEAR = b.create();
128        }
129        return rs.mSampler_WRAP_LINEAR_MIP_LINEAR;
130    }
131
132
133    public static class Builder {
134        RenderScript mRS;
135        Value mMin;
136        Value mMag;
137        Value mWrapS;
138        Value mWrapT;
139        Value mWrapR;
140
141        public Builder(RenderScript rs) {
142            mRS = rs;
143            mMin = Value.NEAREST;
144            mMag = Value.NEAREST;
145            mWrapS = Value.WRAP;
146            mWrapT = Value.WRAP;
147            mWrapR = Value.WRAP;
148        }
149
150        public void setMin(Value v) {
151            if (v == Value.NEAREST ||
152                v == Value.LINEAR ||
153                v == Value.LINEAR_MIP_LINEAR) {
154                mMin = v;
155            } else {
156                throw new IllegalArgumentException("Invalid value");
157            }
158        }
159
160        public void setMag(Value v) {
161            if (v == Value.NEAREST || v == Value.LINEAR) {
162                mMag = v;
163            } else {
164                throw new IllegalArgumentException("Invalid value");
165            }
166        }
167
168        public void setWrapS(Value v) {
169            if (v == Value.WRAP || v == Value.CLAMP) {
170                mWrapS = v;
171            } else {
172                throw new IllegalArgumentException("Invalid value");
173            }
174        }
175
176        public void setWrapT(Value v) {
177            if (v == Value.WRAP || v == Value.CLAMP) {
178                mWrapT = v;
179            } else {
180                throw new IllegalArgumentException("Invalid value");
181            }
182        }
183
184        public void setWrapR(Value v) {
185            if (v == Value.WRAP || v == Value.CLAMP) {
186                mWrapR = v;
187            } else {
188                throw new IllegalArgumentException("Invalid value");
189            }
190        }
191
192        static synchronized Sampler internalCreate(RenderScript rs, Builder b) {
193            rs.nSamplerBegin();
194            rs.nSamplerSet(0, b.mMin.mID);
195            rs.nSamplerSet(1, b.mMag.mID);
196            rs.nSamplerSet(2, b.mWrapS.mID);
197            rs.nSamplerSet(3, b.mWrapT.mID);
198            rs.nSamplerSet(4, b.mWrapR.mID);
199            int id = rs.nSamplerCreate();
200            return new Sampler(id, rs);
201        }
202
203        public Sampler create() {
204            mRS.validate();
205            return internalCreate(mRS, this);
206        }
207    }
208
209}
210
211