165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/* 265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Copyright (C) 2011 The Android Open Source Project 365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Licensed under the Apache License, Version 2.0 (the "License"); 565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * you may not use this file except in compliance with the License. 665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * You may obtain a copy of the License at 765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * http://www.apache.org/licenses/LICENSE-2.0 965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 1065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Unless required by applicable law or agreed to in writing, software 1165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * distributed under the License is distributed on an "AS IS" BASIS, 1265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * See the License for the specific language governing permissions and 1465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * limitations under the License. 1565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 1665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpackage android.filterpacks.imageproc; 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Filter; 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FilterContext; 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Frame; 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FrameFormat; 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GenerateFieldPort; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.geometry.Quad; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.geometry.Point; 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class StraightenFilter extends Filter { 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "angle", hasDefault = true) 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mAngle = 0f; 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "maxAngle", hasDefault = true) 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mMaxAngle = 45f; 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "tile_size", hasDefault = true) 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTileSize = 640; 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mWidth = 0; 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mHeight = 0; 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private static final float DEGREE_TO_RADIAN = (float) Math.PI / 180.0f; 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public StraightenFilter(String name) { 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = ShaderProgram.createIdentity(context); 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mWidth = inputFormat.getWidth(); 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHeight = inputFormat.getHeight(); 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, output); 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateParameters() { 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float cosTheta = (float) Math.cos(mAngle * DEGREE_TO_RADIAN); 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float sinTheta = (float) Math.sin(mAngle * DEGREE_TO_RADIAN); 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mMaxAngle <= 0) 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Max angle is out of range (0-180)."); 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mMaxAngle = (mMaxAngle > 90) ? 90 : mMaxAngle; 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Point p0 = new Point(-cosTheta * mWidth + sinTheta * mHeight, 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn -sinTheta * mWidth - cosTheta * mHeight); 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Point p1 = new Point(cosTheta * mWidth + sinTheta * mHeight, 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn sinTheta * mWidth - cosTheta * mHeight); 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Point p2 = new Point(-cosTheta * mWidth - sinTheta * mHeight, 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn -sinTheta * mWidth + cosTheta * mHeight); 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Point p3 = new Point(cosTheta * mWidth - sinTheta * mHeight, 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn sinTheta * mWidth + cosTheta * mHeight); 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float maxWidth = (float) Math.max(Math.abs(p0.x), Math.abs(p1.x)); 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float maxHeight = (float) Math.max(Math.abs(p0.y), Math.abs(p1.y)); 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float scale = 0.5f * Math.min( mWidth / maxWidth, 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHeight / maxHeight); 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn p0.set(scale * p0.x / mWidth + 0.5f, scale * p0.y / mHeight + 0.5f); 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn p1.set(scale * p1.x / mWidth + 0.5f, scale * p1.y / mHeight + 0.5f); 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn p2.set(scale * p2.x / mWidth + 0.5f, scale * p2.y / mHeight + 0.5f); 14465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn p3.set(scale * p3.x / mWidth + 0.5f, scale * p3.y / mHeight + 0.5f); 14565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Quad quad = new Quad(p0, p1, p2, p3); 14765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ((ShaderProgram) mProgram).setSourceRegion(quad); 14865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 150