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.FilterContext; 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * The filter linearly blends "left" and "right" frames. The blending weight is 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * the multiplication of parameter "blend" and the alpha value in "right" frame. 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class BlendFilter extends ImageCombineFilter { 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mBlendShader = 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_1;\n" + 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float blend;\n" + 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 colorL = texture2D(tex_sampler_0, v_texcoord);\n" + 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 colorR = texture2D(tex_sampler_1, v_texcoord);\n" + 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " float weight = colorR.a * blend;\n" + 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor = mix(colorL, colorR, weight);\n" + 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public BlendFilter(String name) { 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name, new String[] { "left", "right" }, "blended", "blend"); 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn protected Program getNativeProgram(FilterContext context) { 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("TODO: Write native implementation for Blend!"); 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn protected Program getShaderProgram(FilterContext context) { 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return new ShaderProgram(context, mBlendShader); 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 57