1/*
2 * Copyright (C) 2011 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
18package android.filterfw.core;
19
20import android.filterfw.core.Frame;
21import android.filterfw.core.FrameFormat;
22import android.filterfw.core.FrameManager;
23import android.filterfw.format.ObjectFormat;
24import android.graphics.Bitmap;
25
26import java.nio.ByteBuffer;
27
28/**
29 * @hide
30 */
31public class SimpleFrame extends Frame {
32
33    private Object mObject;
34
35    SimpleFrame(FrameFormat format, FrameManager frameManager) {
36        super(format, frameManager);
37        initWithFormat(format);
38        setReusable(false);
39    }
40
41    static SimpleFrame wrapObject(Object object, FrameManager frameManager) {
42        FrameFormat format = ObjectFormat.fromObject(object, FrameFormat.TARGET_SIMPLE);
43        SimpleFrame result = new SimpleFrame(format, frameManager);
44        result.setObjectValue(object);
45        return result;
46    }
47
48    private void initWithFormat(FrameFormat format) {
49        final int count = format.getLength();
50        final int baseType = format.getBaseType();
51        switch (baseType) {
52            case FrameFormat.TYPE_BYTE:
53                mObject = new byte[count];
54                break;
55            case FrameFormat.TYPE_INT16:
56                mObject = new short[count];
57                break;
58            case FrameFormat.TYPE_INT32:
59                mObject = new int[count];
60                break;
61            case FrameFormat.TYPE_FLOAT:
62                mObject = new float[count];
63                break;
64            case FrameFormat.TYPE_DOUBLE:
65                mObject = new double[count];
66                break;
67            default:
68                mObject = null;
69                break;
70        }
71    }
72
73    @Override
74    protected boolean hasNativeAllocation() {
75        return false;
76    }
77
78    @Override
79    protected void releaseNativeAllocation() {
80    }
81
82    @Override
83    public Object getObjectValue() {
84        return mObject;
85    }
86
87    @Override
88    public void setInts(int[] ints) {
89        assertFrameMutable();
90        setGenericObjectValue(ints);
91    }
92
93    @Override
94    public int[] getInts() {
95        return (mObject instanceof int[]) ? (int[])mObject : null;
96    }
97
98    @Override
99    public void setFloats(float[] floats) {
100        assertFrameMutable();
101        setGenericObjectValue(floats);
102    }
103
104    @Override
105    public float[] getFloats() {
106        return (mObject instanceof float[]) ? (float[])mObject : null;
107    }
108
109    @Override
110    public void setData(ByteBuffer buffer, int offset, int length) {
111        assertFrameMutable();
112        setGenericObjectValue(ByteBuffer.wrap(buffer.array(), offset, length));
113    }
114
115    @Override
116    public ByteBuffer getData() {
117        return (mObject instanceof ByteBuffer) ? (ByteBuffer)mObject : null;
118    }
119
120    @Override
121    public void setBitmap(Bitmap bitmap) {
122        assertFrameMutable();
123        setGenericObjectValue(bitmap);
124    }
125
126    @Override
127    public Bitmap getBitmap() {
128        return (mObject instanceof Bitmap) ? (Bitmap)mObject : null;
129    }
130
131    private void setFormatObjectClass(Class objectClass) {
132        MutableFrameFormat format = getFormat().mutableCopy();
133        format.setObjectClass(objectClass);
134        setFormat(format);
135    }
136
137    @Override
138    protected void setGenericObjectValue(Object object) {
139        // Update the FrameFormat class
140        // TODO: Take this out! FrameFormats should not be modified and convenience formats used
141        // instead!
142        FrameFormat format = getFormat();
143        if (format.getObjectClass() == null) {
144            setFormatObjectClass(object.getClass());
145        } else if (!format.getObjectClass().isAssignableFrom(object.getClass())) {
146            throw new RuntimeException(
147                "Attempting to set object value of type '" + object.getClass() + "' on " +
148                "SimpleFrame of type '" + format.getObjectClass() + "'!");
149        }
150
151        // Set the object value
152        mObject = object;
153    }
154
155    @Override
156    public String toString() {
157        return "SimpleFrame (" + getFormat() + ")";
158    }
159}
160