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 SaturateFilter 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 mBenProgram; 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mHerfProgram; 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mBenSaturateShader = 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float scale;\n" + 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float shift;\n" + 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform vec3 weights;\n" + 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float kv = dot(color.rgb, weights) + shift;\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 new_color = scale * color.rgb + (1.0 - scale) * kv;\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(new_color, color.a);\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mHerfSaturateShader = 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform vec3 weights;\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform vec3 exponents;\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float de = dot(color.rgb, weights);\n" + 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float inv_de = 1.0 / de;\n" + 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 new_color = de * pow(color.rgb * inv_de, exponents);\n" + 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float max_color = max(max(max(new_color.r, new_color.g), new_color.b), 1.0);\n" + 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(new_color / max_color, color.a);\n" + 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public SaturateFilter(String name) { 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mBenSaturateShader); 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mBenProgram = shaderProgram; 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram = new ShaderProgram(context, mHerfSaturateShader); 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHerfProgram = shaderProgram; 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mBenProgram != null && mHerfProgram != null) { 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mBenProgram == null || inputFormat.getTarget() != mTarget) { 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initParameters(); 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mScale > 0.0f) { 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHerfProgram.process(input, output); 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } else { 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mBenProgram.process(input, output); 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void initParameters() { 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float shift = 1.0f / 255.0f; 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float weights[] = { 2f/8f, 5f/8f, 1f/8f}; 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mBenProgram.setHostValue("weights", weights); 14565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mBenProgram.setHostValue("shift", shift); 14665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHerfProgram.setHostValue("weights", weights); 14865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 15065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 15165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateParameters() { 15365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mScale > 0.0f) { 15565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float exponents[] = new float[3]; 15665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 15765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn exponents[0] = (0.9f * mScale) + 1.0f; 15865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn exponents[1] = (2.1f * mScale) + 1.0f; 15965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn exponents[2] = (2.7f * mScale) + 1.0f; 16065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 16165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHerfProgram.setHostValue("exponents", exponents); 16265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } else { 16365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mBenProgram.setHostValue("scale", 1.0f + mScale); 16465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 16565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 16665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 16765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 168