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 Renn 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpackage android.filterpacks.imageproc; 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Filter; 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FilterContext; 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Frame; 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FrameFormat; 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GenerateFieldPort; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GLFrame; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.geometry.Quad; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ObjectFormat; 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.opengl.GLES20; 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class DrawRectFilter extends Filter { 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "colorRed", hasDefault = true) 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mColorRed = 0.8f; 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "colorGreen", hasDefault = true) 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mColorGreen = 0.8f; 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "colorBlue", hasDefault = true) 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private float mColorBlue = 0.0f; 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mVertexShader = 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "attribute vec4 aPosition;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_Position = aPosition;\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mFixedColorFragmentShader = 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform vec4 color;\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = color;\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private ShaderProgram mProgram; 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public DrawRectFilter(String name) { 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA, 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat.TARGET_GPU)); 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("box", ObjectFormat.fromClass(Quad.class, FrameFormat.TARGET_SIMPLE)); 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 @Override 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void prepare(FilterContext context) { 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = new ShaderProgram(context, mVertexShader, mFixedColorFragmentShader); 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext env) { 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get input frame 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame imageFrame = pullInput("image"); 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame boxFrame = pullInput("box"); 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get the box 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Quad box = (Quad)boxFrame.getObjectValue(); 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn box = box.scaled(2.0f).translated(-1.0f, -1.0f); 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create output frame with copy of input 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn GLFrame output = (GLFrame)env.getFrameManager().duplicateFrame(imageFrame); 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Draw onto output 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.focus(); 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn renderBox(box); 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release pushed frame 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void renderBox(Quad box) { 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn final int FLOAT_SIZE = 4; 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get current values 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float[] color = {mColorRed, mColorGreen, mColorBlue, 1f}; 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn float[] vertexValues = { box.p0.x, box.p0.y, 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn box.p1.x, box.p1.y, 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn box.p3.x, box.p3.y, 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn box.p2.x, box.p2.y }; 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Set the program variables 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("color", color); 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setAttributeValues("aPosition", vertexValues, 2); 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setVertexCount(4); 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Draw 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.beginDrawing(); 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn GLES20.glLineWidth(1.0f); 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn GLES20.glDrawArrays(GLES20.GL_LINE_LOOP, 0, 4); 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 130