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.GenerateFinalPort; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.KeyValueMap; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.NativeProgram; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.NativeFrame; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.util.Log; 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class FillLightFilter extends Filter { 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "tile_size", hasDefault = true) 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTileSize = 640; 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "strength", hasDefault = true) 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mBacklight = 0f; 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mFillLightShader = 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float mult;\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float igamma;\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main()\n" + 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "{\n" + 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " const vec3 color_weights = vec3(0.25, 0.5, 0.25);\n" + 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float lightmask = dot(color.rgb, color_weights);\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float backmask = (1.0 - lightmask);\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 ones = vec3(1.0, 1.0, 1.0);\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 diff = pow(mult * color.rgb, igamma * ones) - color.rgb;\n" + 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " diff = min(diff, 1.0);\n" + 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 new_color = min(color.rgb + diff * backmask, 1.0);\n" + 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(new_color, color.a);\n" + 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FillLightFilter(String name) { 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mFillLightShader); 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Log.e("FillLight", "tile size: " + mTileSize); 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter FillLight does not support frames of " + 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, output); 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateParameters() { 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float fade_gamma = 0.3f; 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float amt = 1.0f - mBacklight; 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float mult = 1.0f / (amt * 0.7f + 0.3f); 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float faded = fade_gamma + (1.0f -fade_gamma) *mult; 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float igamma = 1.0f / faded; 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("mult", mult); 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("igamma", igamma); 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 141