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 Rennpublic class VignetteFilter extends Filter { 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "scale", hasDefault = true) 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mScale = 0f; 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "tile_size", hasDefault = true) 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTileSize = 640; 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mWidth = 0; 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mHeight = 0; 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final float mSlope = 20.0f; 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final float mShade = 0.85f; 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mVignetteShader = 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float range;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float inv_max_dist;\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float shade;\n" + 510a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin "uniform vec2 scale;\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " const float slope = 20.0;\n" + 550a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin " vec2 coord = v_texcoord - vec2(0.5, 0.5);\n" + 560a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin " float dist = length(coord * scale);\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float lumen = shade / (1.0 + exp((dist * inv_max_dist - range) * slope)) + (1.0 - shade);\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(color.rgb * lumen, color.a);\n" + 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public VignetteFilter(String name) { 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mVignetteShader); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void initParameters() { 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 940a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin float scale[] = new float[2]; 950a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin if (mWidth > mHeight) { 960a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin scale[0] = 1f; 970a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin scale[1] = ((float) mHeight) / mWidth; 980a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin } else { 990a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin scale[0] = ((float) mWidth) / mHeight; 1000a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin scale[1] = 1f; 1010a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin } 1020a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin float max_dist = ((float) Math.sqrt(scale[0] * scale[0] + scale[1] * scale[1])) * 0.5f; 1030a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin mProgram.setHostValue("scale", scale); 1040a1013229254cdc146d4ce2f4b4aef301b018f09Ruei-sung Lin mProgram.setHostValue("inv_max_dist", 1f / max_dist); 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("shade", mShade); 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateParameters() { 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // The 'range' is between 1.3 to 0.6. When scale is zero then range is 1.3 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // which means no vignette at all because the luminousity difference is 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // less than 1/256 and will cause nothing. 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("range", 1.30f - (float) Math.sqrt(mScale) * 0.7f); 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Check if the frame size has changed 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mWidth = inputFormat.getWidth(); 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHeight = inputFormat.getHeight(); 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initParameters(); 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 14465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 14565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 14765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, output); 14865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 15065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 15165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 15365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 15465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 15565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 156