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 17 18package android.filterpacks.imageproc; 19 20import android.content.Context; 21import android.filterfw.core.Filter; 22import android.filterfw.core.FilterContext; 23import android.filterfw.core.Frame; 24import android.filterfw.core.FrameFormat; 25import android.filterfw.core.FrameManager; 26import android.filterfw.core.GenerateFinalPort; 27import android.filterfw.core.GenerateFieldPort; 28import android.filterfw.core.KeyValueMap; 29import android.filterfw.core.MutableFrameFormat; 30import android.filterfw.core.NativeFrame; 31import android.filterfw.format.ImageFormat; 32import android.graphics.Bitmap; 33 34/** 35 * @hide 36 */ 37public class BitmapSource extends Filter { 38 39 @GenerateFieldPort(name = "target") 40 String mTargetString; 41 42 @GenerateFieldPort(name = "bitmap") 43 private Bitmap mBitmap; 44 45 @GenerateFieldPort(name = "recycleBitmap", hasDefault = true) 46 private boolean mRecycleBitmap = true; 47 48 @GenerateFieldPort(name = "repeatFrame", hasDefault = true) 49 boolean mRepeatFrame = false; 50 51 private int mTarget; 52 private Frame mImageFrame; 53 54 public BitmapSource(String name) { 55 super(name); 56 } 57 58 59 @Override 60 public void setupPorts() { 61 // Setup output format 62 FrameFormat outputFormat = ImageFormat.create(ImageFormat.COLORSPACE_RGBA, 63 FrameFormat.TARGET_UNSPECIFIED); 64 65 // Add output port 66 addOutputPort("image", outputFormat); 67 } 68 69 public void loadImage(FilterContext filterContext) { 70 // Create frame with bitmap 71 mTarget = FrameFormat.readTargetString(mTargetString); 72 FrameFormat outputFormat = ImageFormat.create(mBitmap.getWidth(), 73 mBitmap.getHeight(), 74 ImageFormat.COLORSPACE_RGBA, 75 mTarget); 76 mImageFrame = filterContext.getFrameManager().newFrame(outputFormat); 77 mImageFrame.setBitmap(mBitmap); 78 mImageFrame.setTimestamp(Frame.TIMESTAMP_UNKNOWN); 79 80 // Free up space used by bitmap 81 if (mRecycleBitmap) { 82 mBitmap.recycle(); 83 } 84 mBitmap = null; 85 } 86 87 @Override 88 public void fieldPortValueUpdated(String name, FilterContext context) { 89 // Clear image (to trigger reload) in case parameters have been changed 90 if (name.equals("bitmap") || name.equals("target")) { 91 if (mImageFrame != null) { 92 mImageFrame.release(); 93 mImageFrame = null; 94 } 95 } 96 } 97 98 @Override 99 public void process(FilterContext context) { 100 if (mImageFrame == null) { 101 loadImage(context); 102 } 103 104 pushOutput("image", mImageFrame); 105 106 if (!mRepeatFrame) { 107 closeOutputPort("image"); 108 } 109 } 110 111 @Override 112 public void tearDown(FilterContext env) { 113 if (mImageFrame != null) { 114 mImageFrame.release(); 115 mImageFrame = null; 116 } 117 } 118} 119