1ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin/* 2ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * Copyright (C) 2011 The Android Open Source Project 3ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * 4ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * you may not use this file except in compliance with the License. 6ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * You may obtain a copy of the License at 7ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * 8ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * http://www.apache.org/licenses/LICENSE-2.0 9ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * 10ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * Unless required by applicable law or agreed to in writing, software 11ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * distributed under the License is distributed on an "AS IS" BASIS, 12ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * See the License for the specific language governing permissions and 14ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin * limitations under the License. 15ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin */ 16ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 17ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linpackage android.filterpacks.imageproc; 18ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 19ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.Filter; 20ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.FilterContext; 21ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.Frame; 22ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.FrameFormat; 23ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.GenerateFieldPort; 24ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.KeyValueMap; 25ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.NativeProgram; 26ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.NativeFrame; 27ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.Program; 28ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.core.ShaderProgram; 29ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport android.filterfw.format.ImageFormat; 30ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 31ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linimport java.util.Random; 32ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 33ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Linpublic class DocumentaryFilter extends Filter { 34ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 35ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin @GenerateFieldPort(name = "tile_size", hasDefault = true) 36ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private int mTileSize = 640; 37ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 38ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private Program mProgram; 39ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 40ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private int mWidth = 0; 41ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private int mHeight = 0; 42ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 43ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 44ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private Frame mNoiseFrame; 45ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private Random mRandom; 46ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 47ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private final String mDocumentaryShader = 48ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "precision mediump float;\n" + 49ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "uniform sampler2D tex_sampler_0;\n" + 50ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "uniform sampler2D tex_sampler_1;\n" + 51ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "uniform float stepsize;\n" + 52ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "uniform float inv_max_dist;\n" + 53ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "uniform vec2 center;\n" + 54ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "varying vec2 v_texcoord;\n" + 55ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "void main() {\n" + 56ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // black white 57ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + 58ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " float dither = texture2D(tex_sampler_1, v_texcoord).r;\n" + 59ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " vec3 xform = clamp(2.0 * color.rgb, 0.0, 1.0);\n" + 60ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " vec3 temp = clamp(2.0 * (color.rgb + stepsize), 0.0, 1.0);\n" + 61ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " vec3 new_color = clamp(xform + (temp - xform) * (dither - 0.5), 0.0, 1.0);\n" + 62ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // grayscale 63ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " float gray = dot(new_color, vec3(0.299, 0.587, 0.114));\n" + 64ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " new_color = vec3(gray, gray, gray);\n" + 65ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // vignette 66ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " float dist = distance(gl_FragCoord.xy, center);\n" + 67ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " float lumen = 0.85 / (1.0 + exp((dist * inv_max_dist - 0.83) * 20.0)) + 0.15;\n" + 68ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin " gl_FragColor = vec4(new_color * lumen, color.a);\n" + 69ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "}\n"; 70ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 71ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public DocumentaryFilter(String name) { 72ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin super(name); 73ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 74ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mRandom = new Random(); 75ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 76ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 77ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin @Override 78ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public void setupPorts() { 79ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 80ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin addOutputBasedOnInput("image", "image"); 81ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 82ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 83ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin @Override 84ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 85ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin return inputFormat; 86ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 87ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 88ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin @Override 89ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public void tearDown(FilterContext context) { 90ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (mNoiseFrame != null) { 91ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame.release(); 92ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame = null; 93ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 94ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 95ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 96ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public void initProgram(FilterContext context, int target) { 97ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin switch (target) { 98ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin case FrameFormat.TARGET_GPU: 99ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin ShaderProgram shaderProgram = new ShaderProgram(context, mDocumentaryShader); 100ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin shaderProgram.setMaximumTileSize(mTileSize); 101ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mProgram = shaderProgram; 102ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin break; 103ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 104ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin default: 105ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin throw new RuntimeException("Filter Sharpen does not support frames of " + 106ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin "target " + target + "!"); 107ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 108ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mTarget = target; 109ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 110ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 111ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin @Override 112ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin public void process(FilterContext context) { 113ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Get input frame 114ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin Frame input = pullInput("image"); 115ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin FrameFormat inputFormat = input.getFormat(); 116ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 117ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Create program if not created already 118ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (mProgram == null || inputFormat.getTarget() != mTarget) { 119ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin initProgram(context, inputFormat.getTarget()); 120ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 121ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 122ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Check if the frame size has changed 123ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 124ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mWidth = inputFormat.getWidth(); 125ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mHeight = inputFormat.getHeight(); 126ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 127ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin int[] buffer = new int[mWidth * mHeight]; 128ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin for (int i = 0; i < mWidth * mHeight; ++i) { 129ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin buffer[i] = mRandom.nextInt(255); 130ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 131ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin FrameFormat format = ImageFormat.create(mWidth, mHeight, 132ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin ImageFormat.COLORSPACE_RGBA, 133ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin FrameFormat.TARGET_GPU); 134ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (mNoiseFrame != null) { 135ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame.release(); 136ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 137ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame = context.getFrameManager().newFrame(format); 138ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame.setInts(buffer); 139ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 140ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin initParameters(); 141ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 142ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 143ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (mNoiseFrame != null && (mNoiseFrame.getFormat().getWidth() != mWidth || 144ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mNoiseFrame.getFormat().getHeight() != mHeight)) { 145ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin throw new RuntimeException("Random map and imput image size mismatch!"); 146ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 147ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 148ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Create output frame 149ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin Frame output = context.getFrameManager().newFrame(inputFormat); 150ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 151ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Process 152ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin Frame[] inputs = {input, mNoiseFrame}; 153ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mProgram.process(inputs, output); 154ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 155ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Push output 156ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin pushOutput("image", output); 157ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 158ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin // Release pushed frame 159ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin output.release(); 160ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 161ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 162ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin private void initParameters() { 163ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin if (mProgram != null) { 164ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin float centerX = (float) (0.5 * mWidth); 165ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin float centerY = (float) (0.5 * mHeight); 166ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin float center[] = {centerX, centerY}; 167ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin float max_dist = (float) Math.sqrt(centerX * centerX + centerY * centerY); 168ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 169ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mProgram.setHostValue("center", center); 170ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mProgram.setHostValue("inv_max_dist", 1.0f / max_dist); 171ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin mProgram.setHostValue("stepsize", 1.0f / 255.0f); 172ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 173ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin } 174ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin 175ea0b039dce7081d631179860df6fc1495290cf97Ruei-sung Lin} 176