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.filterpacks.imageproc;
19
20import android.filterfw.core.Filter;
21import android.filterfw.core.FilterContext;
22import android.filterfw.core.Frame;
23import android.filterfw.core.FrameFormat;
24import android.filterfw.core.KeyValueMap;
25import android.filterfw.core.MutableFrameFormat;
26import android.filterfw.core.NativeProgram;
27import android.filterfw.core.NativeFrame;
28import android.filterfw.core.Program;
29import android.filterfw.core.ShaderProgram;
30import android.filterfw.format.ImageFormat;
31
32import android.util.Log;
33
34/**
35 * @hide
36 */
37public class ToRGBFilter extends Filter {
38
39    private int mInputBPP;
40    private Program mProgram;
41    private FrameFormat mLastFormat = null;
42
43    public ToRGBFilter(String name) {
44        super(name);
45    }
46
47    @Override
48    public void setupPorts() {
49        MutableFrameFormat mask = new MutableFrameFormat(FrameFormat.TYPE_BYTE,
50                                                         FrameFormat.TARGET_NATIVE);
51        mask.setDimensionCount(2);
52        addMaskedInputPort("image", mask);
53        addOutputBasedOnInput("image", "image");
54    }
55
56    @Override
57    public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) {
58        return getConvertedFormat(inputFormat);
59    }
60
61    public FrameFormat getConvertedFormat(FrameFormat format) {
62        MutableFrameFormat result = format.mutableCopy();
63        result.setMetaValue(ImageFormat.COLORSPACE_KEY, ImageFormat.COLORSPACE_RGB);
64        result.setBytesPerSample(3);
65        return result;
66    }
67
68    public void createProgram(FilterContext context, FrameFormat format) {
69        mInputBPP = format.getBytesPerSample();
70        if (mLastFormat != null && mLastFormat.getBytesPerSample() == mInputBPP) return;
71        mLastFormat = format;
72        switch (mInputBPP) {
73            case 1:
74                mProgram = new NativeProgram("filterpack_imageproc", "gray_to_rgb");
75                break;
76            case 4:
77                mProgram = new NativeProgram("filterpack_imageproc", "rgba_to_rgb");
78                break;
79            default:
80                throw new RuntimeException("Unsupported BytesPerPixel: " + mInputBPP + "!");
81        }
82    }
83
84    @Override
85    public void process(FilterContext context) {
86        // Get input frame
87        Frame input = pullInput("image");
88        createProgram(context, input.getFormat());
89
90        // Create output frame
91        Frame output = context.getFrameManager().newFrame(getConvertedFormat(input.getFormat()));
92
93        // Process
94        mProgram.process(input, output);
95
96        // Push output
97        pushOutput("image", output);
98
99        // Release pushed frame
100        output.release();
101    }
102
103}
104