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1 /*
2  * Copyright (C) 2012 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 package android.renderscript;
18 
19 import android.util.Log;
20 
21 /**
22  * Intrinsic for applying a 5x5 convolve to an allocation.
23  *
24  **/
25 public final class ScriptIntrinsicConvolve5x5 extends ScriptIntrinsic {
26     private final float[] mValues = new float[25];
27     private Allocation mInput;
28 
ScriptIntrinsicConvolve5x5(int id, RenderScript rs)29     private ScriptIntrinsicConvolve5x5(int id, RenderScript rs) {
30         super(id, rs);
31     }
32 
33     /**
34      * Supported elements types are {@link Element#U8}, {@link
35      * Element#U8_2}, {@link Element#U8_3}, {@link Element#U8_4},
36      * {@link Element#F32}, {@link Element#F32_2}, {@link
37      * Element#F32_3}, and {@link Element#F32_4}
38      *
39      * The default coefficients are.
40      * <code>
41      * <p> [ 0,  0,  0,  0,  0  ]
42      * <p> [ 0,  0,  0,  0,  0  ]
43      * <p> [ 0,  0,  1,  0,  0  ]
44      * <p> [ 0,  0,  0,  0,  0  ]
45      * <p> [ 0,  0,  0,  0,  0  ]
46      * </code>
47      *
48      * @param rs The RenderScript context
49      * @param e Element type for intputs and outputs
50      *
51      * @return ScriptIntrinsicConvolve5x5
52      */
create(RenderScript rs, Element e)53     public static ScriptIntrinsicConvolve5x5 create(RenderScript rs, Element e) {
54         if (!e.isCompatible(Element.U8(rs)) &&
55             !e.isCompatible(Element.U8_2(rs)) &&
56             !e.isCompatible(Element.U8_3(rs)) &&
57             !e.isCompatible(Element.U8_4(rs)) &&
58             !e.isCompatible(Element.F32(rs)) &&
59             !e.isCompatible(Element.F32_2(rs)) &&
60             !e.isCompatible(Element.F32_3(rs)) &&
61             !e.isCompatible(Element.F32_4(rs))) {
62             throw new RSIllegalArgumentException("Unsuported element type.");
63         }
64 
65         int id = rs.nScriptIntrinsicCreate(4, e.getID(rs));
66         return new ScriptIntrinsicConvolve5x5(id, rs);
67 
68     }
69 
70     /**
71      * Set the input of the blur.
72      * Must match the element type supplied during create.
73      *
74      * @param ain The input allocation.
75      */
setInput(Allocation ain)76     public void setInput(Allocation ain) {
77         mInput = ain;
78         setVar(1, ain);
79     }
80 
81     /**
82     * Set the coefficients for the convolve.
83     *
84     * The convolve layout is
85     * <code>
86     * <p> [ 0,  1,  2,  3,  4  ]
87     * <p> [ 5,  6,  7,  8,  9  ]
88     * <p> [ 10, 11, 12, 13, 14 ]
89     * <p> [ 15, 16, 17, 18, 19 ]
90     * <p> [ 20, 21, 22, 23, 24 ]
91     * </code>
92     *
93     * @param v The array of coefficients to set
94     */
setCoefficients(float v[])95     public void setCoefficients(float v[]) {
96         FieldPacker fp = new FieldPacker(25*4);
97         for (int ct=0; ct < mValues.length; ct++) {
98             mValues[ct] = v[ct];
99             fp.addF32(mValues[ct]);
100         }
101         setVar(0, fp);
102     }
103 
104     /**
105      * Apply the filter to the input and save to the specified
106      * allocation.
107      *
108      * @param aout Output allocation. Must match creation element
109      *             type.
110      */
forEach(Allocation aout)111     public void forEach(Allocation aout) {
112         forEach(0, null, aout, null);
113     }
114 
115     /**
116      * Get a KernelID for this intrinsic kernel.
117      *
118      * @return Script.KernelID The KernelID object.
119      */
getKernelID()120     public Script.KernelID getKernelID() {
121         return createKernelID(0, 2, null, null);
122     }
123 
124     /**
125      * Get a FieldID for the input field of this intrinsic.
126      *
127      * @return Script.FieldID The FieldID object.
128      */
getFieldID_Input()129     public Script.FieldID getFieldID_Input() {
130         return createFieldID(1, null);
131     }
132 }
133 
134