1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.filterpacks.imageproc; 18 19import android.filterfw.core.Filter; 20import android.filterfw.core.FilterContext; 21import android.filterfw.core.Frame; 22import android.filterfw.core.FrameFormat; 23import android.filterfw.core.GenerateFieldPort; 24import android.filterfw.core.KeyValueMap; 25import android.filterfw.core.MutableFrameFormat; 26import android.filterfw.core.NativeProgram; 27import android.filterfw.core.NativeFrame; 28import android.filterfw.core.Program; 29import android.filterfw.core.ShaderProgram; 30import android.filterfw.format.ImageFormat; 31import android.util.Log; 32 33/** 34 * @hide 35 */ 36public class CropRectFilter extends Filter { 37 38 @GenerateFieldPort(name = "xorigin") 39 private int mXorigin; 40 41 @GenerateFieldPort(name = "yorigin") 42 private int mYorigin; 43 44 @GenerateFieldPort(name = "width") 45 private int mOutputWidth; 46 47 @GenerateFieldPort(name = "height") 48 private int mOutputHeight; 49 50 @GenerateFieldPort(name = "tile_size", hasDefault = true) 51 private int mTileSize = 640; 52 53 private Program mProgram; 54 55 private int mWidth = 0; 56 private int mHeight = 0; 57 58 private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 59 60 public CropRectFilter(String name) { 61 super(name); 62 } 63 64 @Override 65 public void setupPorts() { 66 addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 67 addOutputBasedOnInput("image", "image"); 68 } 69 70 public void initProgram(FilterContext context, int target) { 71 switch (target) { 72 case FrameFormat.TARGET_GPU: 73 ShaderProgram shaderProgram = ShaderProgram.createIdentity(context); 74 shaderProgram.setMaximumTileSize(mTileSize); 75 mProgram = shaderProgram; 76 break; 77 78 default: 79 throw new RuntimeException("Filter Sharpen does not support frames of " + 80 "target " + target + "!"); 81 } 82 mTarget = target; 83 } 84 85 @Override 86 public void fieldPortValueUpdated(String name, FilterContext context) { 87 if (mProgram != null) { 88 updateSourceRect(mWidth, mHeight); 89 } 90 } 91 92 @Override 93 public void process(FilterContext context) { 94 // Get input frame 95 Frame input = pullInput("image"); 96 FrameFormat inputFormat = input.getFormat(); 97 98 // Create output frame 99 FrameFormat outputFormat = ImageFormat.create(mOutputWidth, mOutputHeight, 100 ImageFormat.COLORSPACE_RGBA, 101 FrameFormat.TARGET_GPU); 102 Frame output = context.getFrameManager().newFrame(outputFormat); 103 104 // Create program if not created already 105 if (mProgram == null || inputFormat.getTarget() != mTarget) { 106 initProgram(context, inputFormat.getTarget()); 107 } 108 109 // Check if the frame size has changed 110 if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) { 111 updateSourceRect(inputFormat.getWidth(), inputFormat.getHeight()); 112 } 113 114 // Process 115 mProgram.process(input, output); 116 117 // Push output 118 pushOutput("image", output); 119 120 // Release pushed frame 121 output.release(); 122 } 123 124 void updateSourceRect(int width, int height) { 125 mWidth = width; 126 mHeight = height; 127 128 /* 129 Log.e("CropFilter", mWidth + ", " + mHeight + ", " + 130 (float) mXorigin / mWidth + ", " + 131 (float) mYorigin / mHeight + ", " + 132 (float) mOutputWidth / mWidth + ", " + 133 (float) mOutputHeight / mHeight); 134 */ 135 136 ((ShaderProgram) mProgram).setSourceRect((float) mXorigin / mWidth, 137 (float) mYorigin / mHeight, 138 (float) mOutputWidth / mWidth, 139 (float) mOutputHeight / mHeight); 140 } 141} 142