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
17package android.support.v8.renderscript;
18
19import android.content.Context;
20import android.content.res.Resources;
21import android.util.Log;
22
23import java.io.File;
24import java.io.IOException;
25import java.io.InputStream;
26import java.util.Map.Entry;
27import java.util.HashMap;
28
29import java.lang.reflect.Field;
30import java.lang.reflect.Modifier;
31
32/**
33 *
34 **/
35public class ScriptC extends Script {
36    private static final String TAG = "ScriptC";
37
38    /**
39     * Only intended for use by the generated derived classes.
40     *
41     * @param id
42     * @param rs
43     */
44    protected ScriptC(int id, RenderScript rs) {
45        super(id, rs);
46    }
47
48    /**
49     * Only intended for use by the generated derived classes.
50     *
51     *
52     * @param rs
53     * @param resources
54     * @param resourceID
55     */
56    protected ScriptC(RenderScript rs, Resources resources, int resourceID) {
57        super(0, rs);
58        int id = internalCreate(rs, resources, resourceID);
59        if (id == 0) {
60            throw new RSRuntimeException("Loading of ScriptC script failed.");
61        }
62        setID(id);
63    }
64
65
66    private static synchronized int internalCreate(RenderScript rs, Resources resources, int resourceID) {
67        byte[] pgm;
68        int pgmLength;
69        InputStream is = resources.openRawResource(resourceID);
70        try {
71            try {
72                pgm = new byte[1024];
73                pgmLength = 0;
74                while(true) {
75                    int bytesLeft = pgm.length - pgmLength;
76                    if (bytesLeft == 0) {
77                        byte[] buf2 = new byte[pgm.length * 2];
78                        System.arraycopy(pgm, 0, buf2, 0, pgm.length);
79                        pgm = buf2;
80                        bytesLeft = pgm.length - pgmLength;
81                    }
82                    int bytesRead = is.read(pgm, pgmLength, bytesLeft);
83                    if (bytesRead <= 0) {
84                        break;
85                    }
86                    pgmLength += bytesRead;
87                }
88            } finally {
89                is.close();
90            }
91        } catch(IOException e) {
92            throw new Resources.NotFoundException();
93        }
94
95        String resName = resources.getResourceEntryName(resourceID);
96        String cachePath = rs.getApplicationContext().getCacheDir().toString();
97
98        Log.v(TAG, "Create script for resource = " + resName + ", " + pgmLength + ", " + pgm);
99        Log.v(TAG, " path = " + cachePath);
100        return rs.nScriptCCreate(resName, cachePath, pgm, pgmLength);
101    }
102}
103