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 Rennpackage android.filterpacks.imageproc; 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Filter; 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FilterContext; 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Frame; 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FrameFormat; 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GenerateFieldPort; 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class NegativeFilter extends Filter { 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "tile_size", hasDefault = true) 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTileSize = 640; 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mNegativeShader = 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(1.0 - color.rgb, color.a);\n" + 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public NegativeFilter(String name) { 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mNegativeShader); 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, output); 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 101