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.MutableFrameFormat; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Program; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.ShaderProgram; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ImageFormat; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.util.Log; 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport java.lang.Math; 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class ToPackedGrayFilter extends Filter { 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "owidth", hasDefault = true) 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mOWidth = FrameFormat.SIZE_UNSPECIFIED; 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "oheight", hasDefault = true) 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private int mOHeight = FrameFormat.SIZE_UNSPECIFIED; 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "keepAspectRatio", hasDefault = true) 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private boolean mKeepAspectRatio = false; 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Program mProgram; 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private final String mColorToPackedGrayShader = 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "precision mediump float;\n" + 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "const vec4 coeff_y = vec4(0.299, 0.587, 0.114, 0);\n" + 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform sampler2D tex_sampler_0;\n" + 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "uniform float pix_stride;\n" + 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "varying vec2 v_texcoord;\n" + 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "void main() {\n" + 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " for (int i = 0; i < 4; ++i) {\n" + 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " vec4 p = texture2D(tex_sampler_0,\n" + 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " v_texcoord + vec2(pix_stride * float(i), 0.0));\n" + 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " gl_FragColor[i] = dot(p, coeff_y);\n" + 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn " }\n" + 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "}\n"; 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public ToPackedGrayFilter(String name) { 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA, 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat.TARGET_GPU)); 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputBasedOnInput("image", "image"); 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return convertInputFormat(inputFormat); 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private void checkOutputDimensions(int outputWidth, int outputHeight) { 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (outputWidth <= 0 || outputHeight <= 0) { 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("Invalid output dimensions: " + 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn outputWidth + " " + outputHeight); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private FrameFormat convertInputFormat(FrameFormat inputFormat) { 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int ow = mOWidth; 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int oh = mOHeight; 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int w = inputFormat.getWidth(); 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int h = inputFormat.getHeight(); 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mOWidth == FrameFormat.SIZE_UNSPECIFIED) { 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ow = w; 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mOHeight == FrameFormat.SIZE_UNSPECIFIED) { 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn oh = h; 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mKeepAspectRatio) { 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // if keep aspect ratio, use the bigger dimension to determine the 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // final output size 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (w > h) { 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ow = Math.max(ow, oh); 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn oh = ow * h / w; 10165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } else { 10265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn oh = Math.max(ow, oh); 10365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ow = oh * w / h; 10465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ow = (ow > 0 && ow < 4) ? 4 : (ow / 4) * 4; // ensure width is multiple of 4 10765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return ImageFormat.create(ow, oh, 10865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ImageFormat.COLORSPACE_GRAY, 10965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat.TARGET_NATIVE); 11065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 11365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void prepare(FilterContext context) { 11465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram = new ShaderProgram(context, mColorToPackedGrayShader); 11565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 11665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 11765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 11865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 11965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame input = pullInput("image"); 12065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat inputFormat = input.getFormat(); 12165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat outputFormat = convertInputFormat(inputFormat); 12265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int ow = outputFormat.getWidth(); 12365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int oh = outputFormat.getHeight(); 12465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn checkOutputDimensions(ow, oh); 12565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.setHostValue("pix_stride", 1.0f / ow); 12665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 12765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Do the RGBA to luminance conversion. 12865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn MutableFrameFormat tempFrameFormat = inputFormat.mutableCopy(); 12965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn tempFrameFormat.setDimensions(ow / 4, oh); 13065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame temp = context.getFrameManager().newFrame(tempFrameFormat); 13165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mProgram.process(input, temp); 13265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Read frame from GPU to CPU. 13465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame output = context.getFrameManager().newFrame(outputFormat); 13565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.setDataFromFrame(temp); 13665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn temp.release(); 13765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 13865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output and yield ownership. 13965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("image", output); 14065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn output.release(); 14165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 14265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 14365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 144