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 SharpenFilter 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 String mSharpenShader = 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float scale;\n" + 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float stepsizeX;\n" + 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float stepsizeY;\n" + 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec3 nbr_color = vec3(0.0, 0.0, 0.0);\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec2 coord;\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.x = v_texcoord.x - 0.5 * stepsizeX;\n" + 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.y = v_texcoord.y - stepsizeY;\n" + 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " nbr_color += texture2D(tex_sampler_0, coord).rgb - color.rgb;\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.x = v_texcoord.x - stepsizeX;\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.y = v_texcoord.y + 0.5 * stepsizeY;\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " nbr_color += texture2D(tex_sampler_0, coord).rgb - color.rgb;\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.x = v_texcoord.x + stepsizeX;\n" + 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.y = v_texcoord.y - 0.5 * stepsizeY;\n" + 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " nbr_color += texture2D(tex_sampler_0, coord).rgb - color.rgb;\n" + 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.x = v_texcoord.x + stepsizeX;\n" + 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " coord.y = v_texcoord.y + 0.5 * stepsizeY;\n" + 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " nbr_color += texture2D(tex_sampler_0, coord).rgb - color.rgb;\n" + 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = vec4(color.rgb - 2.0 * scale * nbr_color, color.a);\n" + 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public SharpenFilter(String name) { 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return inputFormat; 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void initProgram(FilterContext context, int target) { 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn switch (target) { 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn case FrameFormat.TARGET_GPU: 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ShaderProgram shaderProgram = new ShaderProgram(context, mSharpenShader); 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn shaderProgram.setMaximumTileSize(mTileSize); 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = shaderProgram; 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn break; 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn default: 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Filter Sharpen does not support frames of " + 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "target " + target + "!"); 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mTarget = target; 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(inputFormat); 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create program if not created already 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram == null || inputFormat.getTarget() != mTarget) { 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn initProgram(context, inputFormat.getTarget()); 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Check if the frame size has changed 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateFrameSize(inputFormat.getWidth(), inputFormat.getHeight()); 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Process 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, output); 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateFrameSize(int width, int height) { 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mWidth = width; 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mHeight = height; 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("stepsizeX", 1.0f / mWidth); 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("stepsizeY", 1.0f / mHeight); 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void updateParameters() { 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("scale", mScale); 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 14465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mProgram != null) { 14565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn updateParameters(); 14665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 149