| /* |
| * 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.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.filterfw.geometry.Quad; |
| import android.filterfw.geometry.Point; |
| import android.util.Log; |
| |
| /** |
| * @hide |
| */ |
| public class RotateFilter extends Filter { |
| |
| @GenerateFieldPort(name = "angle") |
| private int mAngle; |
| |
| @GenerateFieldPort(name = "tile_size", hasDefault = true) |
| private int mTileSize = 640; |
| |
| private Program mProgram; |
| |
| private int mWidth = 0; |
| private int mHeight = 0; |
| private int mTarget = FrameFormat.TARGET_UNSPECIFIED; |
| |
| private int mOutputWidth; |
| private int mOutputHeight; |
| |
| public RotateFilter(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); |
| addOutputBasedOnInput("image", "image"); |
| } |
| |
| public void initProgram(FilterContext context, int target) { |
| switch (target) { |
| case FrameFormat.TARGET_GPU: |
| ShaderProgram shaderProgram = ShaderProgram.createIdentity(context); |
| shaderProgram.setMaximumTileSize(mTileSize); |
| shaderProgram.setClearsOutput(true); |
| mProgram = shaderProgram; |
| break; |
| |
| default: |
| throw new RuntimeException("Filter Sharpen does not support frames of " + |
| "target " + target + "!"); |
| } |
| mTarget = target; |
| } |
| |
| @Override |
| public void fieldPortValueUpdated(String name, FilterContext context) { |
| if (mProgram != null) { |
| updateParameters(); |
| } |
| } |
| |
| @Override |
| public void process(FilterContext context) { |
| // Get input frame |
| Frame input = pullInput("image"); |
| FrameFormat inputFormat = input.getFormat(); |
| |
| // Create program if not created already |
| if (mProgram == null || inputFormat.getTarget() != mTarget) { |
| initProgram(context, inputFormat.getTarget()); |
| } |
| |
| if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { |
| mWidth = inputFormat.getWidth(); |
| mHeight = inputFormat.getHeight(); |
| mOutputWidth = mWidth; |
| mOutputHeight = mHeight; |
| |
| updateParameters(); |
| } |
| |
| // Create output frame |
| FrameFormat outputFormat = ImageFormat.create(mOutputWidth, mOutputHeight, |
| ImageFormat.COLORSPACE_RGBA, |
| FrameFormat.TARGET_GPU); |
| |
| Frame output = context.getFrameManager().newFrame(outputFormat); |
| |
| // Process |
| mProgram.process(input, output); |
| |
| // Push output |
| pushOutput("image", output); |
| |
| // Release pushed frame |
| output.release(); |
| } |
| |
| private void updateParameters() { |
| float sinTheta; |
| float cosTheta; |
| |
| if (mAngle % 90 == 0) { |
| if (mAngle % 180 == 0) { |
| sinTheta = 0f; |
| cosTheta = (mAngle % 360 == 0) ? 1f:-1f; |
| } else { |
| cosTheta = 0f; |
| sinTheta = ((mAngle + 90) % 360 == 0) ? -1f:1f; |
| |
| mOutputWidth = mHeight; |
| mOutputHeight = mWidth; |
| } |
| } else { |
| throw new RuntimeException("degree has to be multiply of 90."); |
| } |
| |
| Point x0 = new Point(0.5f * (-cosTheta + sinTheta + 1f), |
| 0.5f * (-sinTheta - cosTheta + 1f)); |
| Point x1 = new Point(0.5f * (cosTheta + sinTheta + 1f), |
| 0.5f * (sinTheta - cosTheta + 1f)); |
| Point x2 = new Point(0.5f * (-cosTheta - sinTheta + 1f), |
| 0.5f * (-sinTheta + cosTheta + 1f)); |
| Point x3 = new Point(0.5f * (cosTheta - sinTheta + 1f), |
| 0.5f * (sinTheta + cosTheta + 1f)); |
| Quad quad = new Quad(x0, x1, x2, x3); |
| ((ShaderProgram) mProgram).setTargetRegion(quad); |
| } |
| } |