BitmapSource.java revision 6090995951c6e2e4dcf38102f01793f8a94166e1
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.filterfw.core.Filter; 21import android.filterfw.core.FilterContext; 22import android.filterfw.core.Frame; 23import android.filterfw.core.FrameFormat; 24import android.filterfw.core.GenerateFieldPort; 25import android.filterfw.format.ImageFormat; 26import android.graphics.Bitmap; 27 28/** 29 * @hide 30 */ 31public class BitmapSource extends Filter { 32 33 @GenerateFieldPort(name = "target") 34 String mTargetString; 35 36 @GenerateFieldPort(name = "bitmap") 37 private Bitmap mBitmap; 38 39 @GenerateFieldPort(name = "recycleBitmap", hasDefault = true) 40 private boolean mRecycleBitmap = true; 41 42 @GenerateFieldPort(name = "repeatFrame", hasDefault = true) 43 boolean mRepeatFrame = false; 44 45 private int mTarget; 46 private Frame mImageFrame; 47 48 public BitmapSource(String name) { 49 super(name); 50 } 51 52 53 @Override 54 public void setupPorts() { 55 // Setup output format 56 FrameFormat outputFormat = ImageFormat.create(ImageFormat.COLORSPACE_RGBA, 57 FrameFormat.TARGET_UNSPECIFIED); 58 59 // Add output port 60 addOutputPort("image", outputFormat); 61 } 62 63 public void loadImage(FilterContext filterContext) { 64 // Create frame with bitmap 65 mTarget = FrameFormat.readTargetString(mTargetString); 66 FrameFormat outputFormat = ImageFormat.create(mBitmap.getWidth(), 67 mBitmap.getHeight(), 68 ImageFormat.COLORSPACE_RGBA, 69 mTarget); 70 mImageFrame = filterContext.getFrameManager().newFrame(outputFormat); 71 mImageFrame.setBitmap(mBitmap); 72 mImageFrame.setTimestamp(Frame.TIMESTAMP_UNKNOWN); 73 74 // Free up space used by bitmap 75 if (mRecycleBitmap) { 76 mBitmap.recycle(); 77 } 78 mBitmap = null; 79 } 80 81 @Override 82 public void fieldPortValueUpdated(String name, FilterContext context) { 83 // Clear image (to trigger reload) in case parameters have been changed 84 if (name.equals("bitmap") || name.equals("target")) { 85 if (mImageFrame != null) { 86 mImageFrame.release(); 87 mImageFrame = null; 88 } 89 } 90 } 91 92 @Override 93 public void process(FilterContext context) { 94 if (mImageFrame == null) { 95 loadImage(context); 96 } 97 98 pushOutput("image", mImageFrame); 99 100 if (!mRepeatFrame) { 101 closeOutputPort("image"); 102 } 103 } 104 105 @Override 106 public void tearDown(FilterContext env) { 107 if (mImageFrame != null) { 108 mImageFrame.release(); 109 mImageFrame = null; 110 } 111 } 112} 113