130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni/* 230ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * Copyright (C) 2011 The Android Open Source Project 330ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * 430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * Licensed under the Apache License, Version 2.0 (the "License"); 530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * you may not use this file except in compliance with the License. 630ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * You may obtain a copy of the License at 730ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * 830ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * http://www.apache.org/licenses/LICENSE-2.0 930ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * 1030ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * Unless required by applicable law or agreed to in writing, software 1130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * distributed under the License is distributed on an "AS IS" BASIS, 1230ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1330ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * See the License for the specific language governing permissions and 1430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni * limitations under the License. 1530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni */ 1630ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 1730ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceronipackage android.filterpacks.imageproc; 1830ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 1930ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.Filter; 20692c3bf7a1c7e2d5b1066cf7a1b057e993742c87Marius Rennimport android.filterfw.core.FilterContext; 2130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.Frame; 2230ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.FrameFormat; 2330ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.KeyValueMap; 2430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.NativeProgram; 2530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.NativeFrame; 2630ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.Program; 2730ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport android.filterfw.core.ShaderProgram; 28c0017fd82acec5d0427306ea5f536c3d78854f95Marius Rennimport android.filterfw.format.ImageFormat; 2930ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 3030ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroniimport java.util.Set; 3130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 32a3bfbe5389c6146abe318a7add3fa688d69bc01bEino-Ville Talvala/** 33c80c7521d8f883b47a9234b9de7bd1feea54bcbaRuei-sung Lin * The filter linearly blends "left" and "right" frames. The blending weight is 34c80c7521d8f883b47a9234b9de7bd1feea54bcbaRuei-sung Lin * the multiplication of parameter "blend" and the alpha value in "right" frame. 35a3bfbe5389c6146abe318a7add3fa688d69bc01bEino-Ville Talvala * @hide 36a3bfbe5389c6146abe318a7add3fa688d69bc01bEino-Ville Talvala */ 3721d0ac7403b836e32e2bdbdc8dc98f42b2dfa4e5Marius Rennpublic class BlendFilter extends ImageCombineFilter { 3830ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 3930ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni private final String mBlendShader = 4030ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "precision mediump float;\n" + 4130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "uniform sampler2D tex_sampler_0;\n" + 4230ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "uniform sampler2D tex_sampler_1;\n" + 4330ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "uniform float blend;\n" + 4430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "varying vec2 v_texcoord;\n" + 4530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "void main() {\n" + 4630ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni " vec4 colorL = texture2D(tex_sampler_0, v_texcoord);\n" + 4730ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni " vec4 colorR = texture2D(tex_sampler_1, v_texcoord);\n" + 48c80c7521d8f883b47a9234b9de7bd1feea54bcbaRuei-sung Lin " float weight = colorR.a * blend;\n" + 49c80c7521d8f883b47a9234b9de7bd1feea54bcbaRuei-sung Lin " gl_FragColor = mix(colorL, colorR, weight);\n" + 5030ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni "}\n"; 5130ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 5230ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni public BlendFilter(String name) { 5321d0ac7403b836e32e2bdbdc8dc98f42b2dfa4e5Marius Renn super(name, new String[] { "left", "right" }, "blended", "blend"); 5430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni } 5530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 56c0017fd82acec5d0427306ea5f536c3d78854f95Marius Renn @Override 57511360e61650864ea22a171159efe073c80d0cdbMarius Renn protected Program getNativeProgram(FilterContext context) { 58c80c7521d8f883b47a9234b9de7bd1feea54bcbaRuei-sung Lin throw new RuntimeException("TODO: Write native implementation for Blend!"); 5930ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni } 6030ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni 61c0017fd82acec5d0427306ea5f536c3d78854f95Marius Renn @Override 62511360e61650864ea22a171159efe073c80d0cdbMarius Renn protected Program getShaderProgram(FilterContext context) { 63511360e61650864ea22a171159efe073c80d0cdbMarius Renn return new ShaderProgram(context, mBlendShader); 6430ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni } 6530ab3fc173709a491c9e2e103f53fb7c0d1b96b7Rodrigo Carceroni} 66