DocumentaryFilter.java revision 65953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9
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.KeyValueMap; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.NativeProgram; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.NativeFrame; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport java.util.Random; 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class DocumentaryFilter extends Filter { 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "tile_size", hasDefault = true) 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTileSize = 640; 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mWidth = 0; 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mHeight = 0; 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Frame mNoiseFrame; 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Random mRandom; 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mDocumentaryShader = 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_1;\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float stepsize;\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float inv_max_dist;\n" + 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform vec2 center;\n" + 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // black white 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float dither = texture2D(tex_sampler_1, v_texcoord).r;\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 xform = clamp(2.0 * color.rgb, 0.0, 1.0);\n" + 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 temp = clamp(2.0 * (color.rgb + stepsize), 0.0, 1.0);\n" + 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 new_color = clamp(xform + (temp - xform) * (dither - 0.5), 0.0, 1.0);\n" + 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // grayscale 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float gray = dot(new_color, vec3(0.299, 0.587, 0.114));\n" + 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " new_color = vec3(gray, gray, gray);\n" + 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // vignette 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float dist = distance(gl_FragCoord.xy, center);\n" + 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float lumen = 0.85 / (1.0 + exp((dist * inv_max_dist - 0.83) * 20.0)) + 0.15;\n" + 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(new_color * lumen, color.a);\n" + 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public DocumentaryFilter(String name) { 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mRandom = new Random(); 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void tearDown(FilterContext context) { 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mNoiseFrame != null) { 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame.release(); 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame = null; 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mDocumentaryShader); 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Check if the frame size has changed 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mWidth = inputFormat.getWidth(); 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHeight = inputFormat.getHeight(); 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int[] buffer = new int[mWidth * mHeight]; 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn for (int i = 0; i < mWidth * mHeight; ++i) { 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn buffer[i] = mRandom.nextInt(255); 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat format = ImageFormat.create(mWidth, mHeight, 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ImageFormat.COLORSPACE_RGBA, 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat.TARGET_GPU); 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mNoiseFrame != null) { 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame.release(); 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame = context.getFrameManager().newFrame(format); 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame.setInts(buffer); 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initParameters(); 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mNoiseFrame != null && (mNoiseFrame.getFormat().getWidth() != mWidth || 14465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mNoiseFrame.getFormat().getHeight() != mHeight)) { 14565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Random map and imput image size mismatch!"); 14665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 14965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 15065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 15265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame[] inputs = {input, mNoiseFrame}; 15365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(inputs, output); 15465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 15665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 15765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 15965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 16065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 16165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 16265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void initParameters() { 16365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 16465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float centerX = (float) (0.5 * mWidth); 16565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float centerY = (float) (0.5 * mHeight); 16665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float center[] = {centerX, centerY}; 16765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float max_dist = (float) Math.sqrt(centerX * centerX + centerY * centerY); 16865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 16965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("center", center); 17065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("inv_max_dist", 1.0f / max_dist); 17165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("stepsize", 1.0f / 255.0f); 17265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 17365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 17465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 17565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 176