| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| package android.filterpacks.imageproc; |
| |
| import android.filterfw.core.Filter; |
| import android.filterfw.core.FilterContext; |
| import android.filterfw.core.Frame; |
| import android.filterfw.core.FrameFormat; |
| import android.filterfw.core.MutableFrameFormat; |
| import android.filterfw.core.NativeProgram; |
| import android.filterfw.core.Program; |
| import android.filterfw.format.ImageFormat; |
| |
| /** |
| * @hide |
| */ |
| public class ToRGBAFilter extends Filter { |
| |
| private int mInputBPP; |
| private Program mProgram; |
| private FrameFormat mLastFormat = null; |
| |
| public ToRGBAFilter(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| MutableFrameFormat mask = new MutableFrameFormat(FrameFormat.TYPE_BYTE, |
| FrameFormat.TARGET_NATIVE); |
| mask.setDimensionCount(2); |
| addMaskedInputPort("image", mask); |
| addOutputBasedOnInput("image", "image"); |
| } |
| |
| @Override |
| public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { |
| return getConvertedFormat(inputFormat); |
| } |
| |
| public FrameFormat getConvertedFormat(FrameFormat format) { |
| MutableFrameFormat result = format.mutableCopy(); |
| result.setMetaValue(ImageFormat.COLORSPACE_KEY, ImageFormat.COLORSPACE_RGBA); |
| result.setBytesPerSample(4); |
| return result; |
| } |
| |
| public void createProgram(FilterContext context, FrameFormat format) { |
| mInputBPP = format.getBytesPerSample(); |
| if (mLastFormat != null && mLastFormat.getBytesPerSample() == mInputBPP) return; |
| mLastFormat = format; |
| switch (mInputBPP) { |
| case 1: |
| mProgram = new NativeProgram("filterpack_imageproc", "gray_to_rgba"); |
| break; |
| case 3: |
| mProgram = new NativeProgram("filterpack_imageproc", "rgb_to_rgba"); |
| break; |
| default: |
| throw new RuntimeException("Unsupported BytesPerPixel: " + mInputBPP + "!"); |
| } |
| } |
| |
| @Override |
| public void process(FilterContext context) { |
| // Get input frame |
| Frame input = pullInput("image"); |
| createProgram(context, input.getFormat()); |
| |
| // Create output frame |
| Frame output = context.getFrameManager().newFrame(getConvertedFormat(input.getFormat())); |
| |
| // Process |
| mProgram.process(input, output); |
| |
| // Push output |
| pushOutput("image", output); |
| |
| // Release pushed frame |
| output.release(); |
| } |
| |
| } |