| /* |
| * 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.GenerateFieldPort; |
| import android.filterfw.core.GLFrame; |
| import android.filterfw.core.KeyValueMap; |
| import android.filterfw.core.MutableFrameFormat; |
| import android.filterfw.core.NativeProgram; |
| import android.filterfw.core.NativeFrame; |
| import android.filterfw.core.Program; |
| import android.filterfw.core.ShaderProgram; |
| import android.filterfw.format.ImageFormat; |
| |
| import android.opengl.GLES20; |
| |
| /** |
| * @hide |
| */ |
| public class ResizeFilter extends Filter { |
| |
| @GenerateFieldPort(name = "owidth") |
| private int mOWidth; |
| @GenerateFieldPort(name = "oheight") |
| private int mOHeight; |
| @GenerateFieldPort(name = "keepAspectRatio", hasDefault = true) |
| private boolean mKeepAspectRatio = false; |
| @GenerateFieldPort(name = "generateMipMap", hasDefault = true) |
| private boolean mGenerateMipMap = false; |
| |
| private Program mProgram; |
| private FrameFormat mLastFormat = null; |
| |
| private MutableFrameFormat mOutputFormat; |
| private int mInputChannels; |
| |
| public ResizeFilter(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); |
| addOutputBasedOnInput("image", "image"); |
| } |
| |
| @Override |
| public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { |
| return inputFormat; |
| } |
| |
| protected void createProgram(FilterContext context, FrameFormat format) { |
| if (mLastFormat != null && mLastFormat.getTarget() == format.getTarget()) return; |
| mLastFormat = format; |
| switch (format.getTarget()) { |
| case FrameFormat.TARGET_NATIVE: |
| throw new RuntimeException("Native ResizeFilter not implemented yet!"); |
| |
| |
| case FrameFormat.TARGET_GPU: |
| ShaderProgram prog = ShaderProgram.createIdentity(context); |
| mProgram = prog; |
| break; |
| |
| default: |
| throw new RuntimeException("ResizeFilter could not create suitable program!"); |
| } |
| } |
| @Override |
| public void process(FilterContext env) { |
| // Get input frame |
| Frame input = pullInput("image"); |
| createProgram(env, input.getFormat()); |
| |
| // Create output frame |
| MutableFrameFormat outputFormat = input.getFormat().mutableCopy(); |
| if (mKeepAspectRatio) { |
| FrameFormat inputFormat = input.getFormat(); |
| mOHeight = mOWidth * inputFormat.getHeight() / inputFormat.getWidth(); |
| } |
| outputFormat.setDimensions(mOWidth, mOHeight); |
| Frame output = env.getFrameManager().newFrame(outputFormat); |
| |
| // Process |
| if (mGenerateMipMap) { |
| GLFrame mipmapped = (GLFrame)env.getFrameManager().newFrame(input.getFormat()); |
| mipmapped.setTextureParameter(GLES20.GL_TEXTURE_MIN_FILTER, |
| GLES20.GL_LINEAR_MIPMAP_NEAREST); |
| mipmapped.setDataFromFrame(input); |
| mipmapped.generateMipMap(); |
| mProgram.process(mipmapped, output); |
| mipmapped.release(); |
| } else { |
| mProgram.process(input, output); |
| } |
| |
| // Push output |
| pushOutput("image", output); |
| |
| // Release pushed frame |
| output.release(); |
| } |
| |
| |
| } |