| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.filterpacks.imageproc; |
| |
| import android.filterfw.core.Filter; |
| import android.filterfw.core.FilterContext; |
| import android.filterfw.core.Frame; |
| import android.filterfw.core.FrameFormat; |
| import android.filterfw.core.GenerateFieldPort; |
| import android.filterfw.core.KeyValueMap; |
| import android.filterfw.core.NativeProgram; |
| import android.filterfw.core.NativeFrame; |
| import android.filterfw.core.Program; |
| import android.filterfw.core.ShaderProgram; |
| import android.filterfw.format.ImageFormat; |
| |
| import android.util.Log; |
| |
| public class CrossProcessFilter extends Filter { |
| |
| @GenerateFieldPort(name = "tile_size", hasDefault = true) |
| private int mTileSize = 640; |
| |
| private Program mProgram; |
| |
| private int mTarget = FrameFormat.TARGET_UNSPECIFIED; |
| |
| private final String mCrossProcessShader = |
| "precision mediump float;\n" + |
| "uniform sampler2D tex_sampler_0;\n" + |
| "varying vec2 v_texcoord;\n" + |
| "void main() {\n" + |
| " vec4 color = texture2D(tex_sampler_0, v_texcoord);\n" + |
| " vec3 ncolor = vec3(0.0, 0.0, 0.0);\n" + |
| " float value;\n" + |
| " if (color.r < 0.5) {\n" + |
| " value = color.r;\n" + |
| " } else {\n" + |
| " value = 1.0 - color.r;\n" + |
| " }\n" + |
| " float red = 4.0 * value * value * value;\n" + |
| " if (color.r < 0.5) {\n" + |
| " ncolor.r = red;\n" + |
| " } else {\n" + |
| " ncolor.r = 1.0 - red;\n" + |
| " }\n" + |
| " if (color.g < 0.5) {\n" + |
| " value = color.g;\n" + |
| " } else {\n" + |
| " value = 1.0 - color.g;\n" + |
| " }\n" + |
| " float green = 2.0 * value * value;\n" + |
| " if (color.g < 0.5) {\n" + |
| " ncolor.g = green;\n" + |
| " } else {\n" + |
| " ncolor.g = 1.0 - green;\n" + |
| " }\n" + |
| " ncolor.b = color.b * 0.5 + 0.25;\n" + |
| " gl_FragColor = vec4(ncolor.rgb, color.a);\n" + |
| "}\n"; |
| |
| public CrossProcessFilter(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); |
| addOutputBasedOnInput("image", "image"); |
| } |
| |
| @Override |
| public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { |
| return inputFormat; |
| } |
| |
| public void initProgram(FilterContext context, int target) { |
| switch (target) { |
| case FrameFormat.TARGET_GPU: |
| ShaderProgram shaderProgram = new ShaderProgram(context, mCrossProcessShader); |
| shaderProgram.setMaximumTileSize(mTileSize); |
| mProgram = shaderProgram; |
| break; |
| |
| default: |
| throw new RuntimeException("Filter CrossProcess does not support frames of " + |
| "target " + target + "!"); |
| } |
| mTarget = target; |
| } |
| |
| @Override |
| public void process(FilterContext context) { |
| // Get input frame |
| Frame input = pullInput("image"); |
| FrameFormat inputFormat = input.getFormat(); |
| |
| // Create program if not created already |
| if (mProgram == null || inputFormat.getTarget() != mTarget) { |
| initProgram(context, inputFormat.getTarget()); |
| } |
| |
| // Create output frame |
| Frame output = context.getFrameManager().newFrame(inputFormat); |
| |
| // Process |
| mProgram.process(input, output); |
| |
| // Push output |
| pushOutput("image", output); |
| |
| // Release pushed frame |
| output.release(); |
| } |
| } |