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 package android.renderscript;
18 
19 import android.content.res.Resources;
20 
21 import java.io.File;
22 import java.io.IOException;
23 import java.io.InputStream;
24 
25 /**
26  * The superclass for all user-defined scripts. This is only
27  * intended to be used by the generated derived classes.
28  **/
29 public class ScriptC extends Script {
30     private static final String TAG = "ScriptC";
31 
32     /**
33      * Only intended for use by the generated derived classes.
34      *
35      * @param id
36      * @param rs
37      */
ScriptC(int id, RenderScript rs)38     protected ScriptC(int id, RenderScript rs) {
39         super(id, rs);
40     }
41     /**
42      * Only intended for use by the generated derived classes.
43      *
44      * @param id
45      * @param rs
46      *
47      */
ScriptC(long id, RenderScript rs)48     protected ScriptC(long id, RenderScript rs) {
49         super(id, rs);
50     }
51     /**
52      * Only intended for use by the generated derived classes.
53      *
54      *
55      * @param rs
56      * @param resources
57      * @param resourceID
58      */
ScriptC(RenderScript rs, Resources resources, int resourceID)59     protected ScriptC(RenderScript rs, Resources resources, int resourceID) {
60         super(0, rs);
61         long id = internalCreate(rs, resources, resourceID);
62         if (id == 0) {
63             throw new RSRuntimeException("Loading of ScriptC script failed.");
64         }
65         setID(id);
66     }
67 
68     /**
69      * Only intended for use by the generated derived classes.
70      *
71      * @param rs
72      */
ScriptC(RenderScript rs, String resName, byte[] bitcode32, byte[] bitcode64)73     protected ScriptC(RenderScript rs, String resName, byte[] bitcode32, byte[] bitcode64) {
74         super(0, rs);
75         long id = 0;
76         if (RenderScript.sPointerSize == 4) {
77             id = internalStringCreate(rs, resName, bitcode32);
78         } else {
79             id = internalStringCreate(rs, resName, bitcode64);
80         }
81         if (id == 0) {
82             throw new RSRuntimeException("Loading of ScriptC script failed.");
83         }
84         setID(id);
85     }
86 
internalCreate(RenderScript rs, Resources resources, int resourceID)87     private static synchronized long internalCreate(RenderScript rs, Resources resources, int resourceID) {
88         byte[] pgm;
89         int pgmLength;
90         InputStream is = resources.openRawResource(resourceID);
91         try {
92             try {
93                 pgm = new byte[1024];
94                 pgmLength = 0;
95                 while(true) {
96                     int bytesLeft = pgm.length - pgmLength;
97                     if (bytesLeft == 0) {
98                         byte[] buf2 = new byte[pgm.length * 2];
99                         System.arraycopy(pgm, 0, buf2, 0, pgm.length);
100                         pgm = buf2;
101                         bytesLeft = pgm.length - pgmLength;
102                     }
103                     int bytesRead = is.read(pgm, pgmLength, bytesLeft);
104                     if (bytesRead <= 0) {
105                         break;
106                     }
107                     pgmLength += bytesRead;
108                 }
109             } finally {
110                 is.close();
111             }
112         } catch(IOException e) {
113             throw new Resources.NotFoundException();
114         }
115 
116         String resName = resources.getResourceEntryName(resourceID);
117 
118         //        Log.v(TAG, "Create script for resource = " + resName);
119         return rs.nScriptCCreate(resName, RenderScript.getCachePath(), pgm, pgmLength);
120     }
121 
internalStringCreate(RenderScript rs, String resName, byte[] bitcode)122     private static synchronized long internalStringCreate(RenderScript rs, String resName, byte[] bitcode) {
123         //        Log.v(TAG, "Create script for resource = " + resName);
124         return rs.nScriptCCreate(resName, RenderScript.getCachePath(), bitcode, bitcode.length);
125     }
126 }
127