FileA3D.java revision 06d69de78845659e6904ae4964e606a7f1a6a4a8 
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
17package android.renderscript;
18
19import java.io.IOException;
20import java.io.InputStream;
21
22import android.content.res.Resources;
23import android.content.res.AssetManager;
24import android.graphics.Bitmap;
25import android.graphics.BitmapFactory;
26import android.util.Log;
27import android.util.TypedValue;
28
29/**
30 * @hide
31 *
32 **/
33public class FileA3D extends BaseObj {
34
35    public enum ClassID {
36
37        UNKNOWN,
38        MESH,
39        TYPE,
40        ELEMENT,
41        ALLOCATION,
42        PROGRAM_VERTEX,
43        PROGRAM_RASTER,
44        PROGRAM_FRAGMENT,
45        PROGRAM_STORE,
46        SAMPLER,
47        ANIMATION,
48        ADAPTER_1D,
49        ADAPTER_2D,
50        SCRIPT_C;
51
52        public static ClassID toClassID(int intID) {
53            return ClassID.values()[intID];
54        }
55    }
56
57    // Read only class with index entries
58    public static class IndexEntry {
59        RenderScript mRS;
60        int mIndex;
61        int mID;
62        String mName;
63        ClassID mClassID;
64        BaseObj mLoadedObj;
65
66        public String getName() {
67            return mName;
68        }
69
70        public ClassID getClassID() {
71            return mClassID;
72        }
73
74        public BaseObj getObject() {
75            mRS.validate();
76            BaseObj obj = internalCreate(mRS, this);
77            return obj;
78        }
79
80        static synchronized BaseObj internalCreate(RenderScript rs, IndexEntry entry) {
81            if(entry.mLoadedObj != null) {
82                return entry.mLoadedObj;
83            }
84
85            if(entry.mClassID == ClassID.UNKNOWN) {
86                return null;
87            }
88
89            int objectID = rs.nFileA3DGetEntryByIndex(entry.mID, entry.mIndex);
90            if(objectID == 0) {
91                return null;
92            }
93
94            switch (entry.mClassID) {
95            case MESH:
96                entry.mLoadedObj = new Mesh(objectID, rs);
97                break;
98            case TYPE:
99                entry.mLoadedObj = new Type(objectID, rs);
100                break;
101            case ELEMENT:
102                entry.mLoadedObj = null;
103                break;
104            case ALLOCATION:
105                entry.mLoadedObj = null;
106                break;
107            case PROGRAM_VERTEX:
108                entry.mLoadedObj = new ProgramVertex(objectID, rs);
109                break;
110            case PROGRAM_RASTER:
111                break;
112            case PROGRAM_FRAGMENT:
113                break;
114            case PROGRAM_STORE:
115                break;
116            case SAMPLER:
117                break;
118            case ANIMATION:
119                break;
120            case ADAPTER_1D:
121                break;
122            case ADAPTER_2D:
123                break;
124            case SCRIPT_C:
125                break;
126            }
127
128            entry.mLoadedObj.updateFromNative();
129
130            return entry.mLoadedObj;
131        }
132
133        IndexEntry(RenderScript rs, int index, int id, String name, ClassID classID) {
134            mRS = rs;
135            mIndex = index;
136            mID = id;
137            mName = name;
138            mClassID = classID;
139            mLoadedObj = null;
140        }
141    }
142
143    IndexEntry[] mFileEntries;
144    InputStream mInputStream;
145
146    FileA3D(int id, RenderScript rs, InputStream stream) {
147        super(id, rs);
148        mInputStream = stream;
149    }
150
151    private void initEntries() {
152        int numFileEntries = mRS.nFileA3DGetNumIndexEntries(getID());
153        if(numFileEntries <= 0) {
154            return;
155        }
156
157        mFileEntries = new IndexEntry[numFileEntries];
158        int[] ids = new int[numFileEntries];
159        String[] names = new String[numFileEntries];
160
161        mRS.nFileA3DGetIndexEntries(getID(), numFileEntries, ids, names);
162
163        for(int i = 0; i < numFileEntries; i ++) {
164            mFileEntries[i] = new IndexEntry(mRS, i, getID(), names[i], ClassID.toClassID(ids[i]));
165        }
166    }
167
168    public int getNumIndexEntries() {
169        if(mFileEntries == null) {
170            return 0;
171        }
172        return mFileEntries.length;
173    }
174
175    public IndexEntry getIndexEntry(int index) {
176        if(getNumIndexEntries() == 0 || index < 0 || index >= mFileEntries.length) {
177            return null;
178        }
179        return mFileEntries[index];
180    }
181
182    static public FileA3D createFromResource(RenderScript rs, Resources res, int id)
183        throws IllegalArgumentException {
184
185        rs.validate();
186        InputStream is = null;
187        try {
188            final TypedValue value = new TypedValue();
189            is = res.openRawResource(id, value);
190
191            int asset = ((AssetManager.AssetInputStream) is).getAssetInt();
192
193            int fileId = rs.nFileA3DCreateFromAssetStream(asset);
194
195            if(fileId == 0) {
196                throw new IllegalStateException("Load failed.");
197            }
198            FileA3D fa3d = new FileA3D(fileId, rs, is);
199            fa3d.initEntries();
200            return fa3d;
201
202        } catch (Exception e) {
203            // Ignore
204        }
205
206        return null;
207    }
208}
209