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.Context; 20 import android.content.res.Resources; 21 import android.util.Log; 22 23 import java.io.File; 24 import java.io.IOException; 25 import java.io.InputStream; 26 import java.util.Map.Entry; 27 import java.util.HashMap; 28 29 import java.lang.reflect.Field; 30 import java.lang.reflect.Modifier; 31 32 /** 33 * 34 **/ 35 public 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 */ ScriptC(int id, RenderScript rs)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 */ ScriptC(RenderScript rs, Resources resources, int resourceID)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 * Name of the file that holds the object cache. 67 */ 68 private static final String CACHE_PATH = "com.android.renderscript.cache"; 69 70 static String mCachePath; 71 internalCreate(RenderScript rs, Resources resources, int resourceID)72 private static synchronized int internalCreate(RenderScript rs, Resources resources, int resourceID) { 73 byte[] pgm; 74 int pgmLength; 75 InputStream is = resources.openRawResource(resourceID); 76 try { 77 try { 78 pgm = new byte[1024]; 79 pgmLength = 0; 80 while(true) { 81 int bytesLeft = pgm.length - pgmLength; 82 if (bytesLeft == 0) { 83 byte[] buf2 = new byte[pgm.length * 2]; 84 System.arraycopy(pgm, 0, buf2, 0, pgm.length); 85 pgm = buf2; 86 bytesLeft = pgm.length - pgmLength; 87 } 88 int bytesRead = is.read(pgm, pgmLength, bytesLeft); 89 if (bytesRead <= 0) { 90 break; 91 } 92 pgmLength += bytesRead; 93 } 94 } finally { 95 is.close(); 96 } 97 } catch(IOException e) { 98 throw new Resources.NotFoundException(); 99 } 100 101 String resName = resources.getResourceEntryName(resourceID); 102 103 // Create the RS cache path if we haven't done so already. 104 if (mCachePath == null) { 105 File f = new File(rs.mCacheDir, CACHE_PATH); 106 mCachePath = f.getAbsolutePath(); 107 f.mkdirs(); 108 } 109 // Log.v(TAG, "Create script for resource = " + resName); 110 return rs.nScriptCCreate(resName, mCachePath, pgm, pgmLength); 111 } 112 } 113