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 
20 /**
21  * Intrinsic for converting an Android YUV buffer to RGB.
22  *
23  * The input allocation should be supplied in a supported YUV format
24  * as a YUV element Allocation. The output is RGBA; the alpha channel
25  * will be set to 255.
26  */
27 public final class ScriptIntrinsicYuvToRGB extends ScriptIntrinsic {
28     private Allocation mInput;
29 
ScriptIntrinsicYuvToRGB(long id, RenderScript rs)30     ScriptIntrinsicYuvToRGB(long id, RenderScript rs) {
31         super(id, rs);
32     }
33 
34     /**
35      * Create an intrinsic for converting YUV to RGB.
36      *
37      * Supported elements types are {@link Element#U8_4}
38      *
39      * @param rs The RenderScript context
40      * @param e Element type for output
41      *
42      * @return ScriptIntrinsicYuvToRGB
43      */
create(RenderScript rs, Element e)44     public static ScriptIntrinsicYuvToRGB create(RenderScript rs, Element e) {
45         // 6 comes from RS_SCRIPT_INTRINSIC_YUV_TO_RGB in rsDefines.h
46         long id = rs.nScriptIntrinsicCreate(6, e.getID(rs));
47         ScriptIntrinsicYuvToRGB si = new ScriptIntrinsicYuvToRGB(id, rs);
48         return si;
49     }
50 
51 
52     /**
53      * Set the input yuv allocation, must be {@link Element#U8}.
54      *
55      * @param ain The input allocation.
56      */
setInput(Allocation ain)57     public void setInput(Allocation ain) {
58         mInput = ain;
59         setVar(0, ain);
60     }
61 
62     /**
63      * Convert the image to RGB.
64      *
65      * @param aout Output allocation. Must match creation element
66      *             type.
67      */
forEach(Allocation aout)68     public void forEach(Allocation aout) {
69         forEach(0, (Allocation) null, aout, null);
70     }
71 
72     /**
73      * Get a KernelID for this intrinsic kernel.
74      *
75      * @return Script.KernelID The KernelID object.
76      */
getKernelID()77     public Script.KernelID getKernelID() {
78         return createKernelID(0, 2, null, null);
79     }
80 
81     /**
82      * Get a FieldID for the input field of this intrinsic.
83      *
84      * @return Script.FieldID The FieldID object.
85      */
getFieldID_Input()86     public Script.FieldID getFieldID_Input() {
87         return createFieldID(0, null);
88     }
89 }
90