FlipFilter.java revision 6090995951c6e2e4dcf38102f01793f8a94166e1
1aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo/* 2aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * Copyright (C) 2011 The Android Open Source Project 3aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * 4aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * Licensed under the Apache License, Version 2.0 (the "License"); 5aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * you may not use this file except in compliance with the License. 6aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * You may obtain a copy of the License at 7aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * 8aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * http://www.apache.org/licenses/LICENSE-2.0 9aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * 10aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * Unless required by applicable law or agreed to in writing, software 11aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * distributed under the License is distributed on an "AS IS" BASIS, 12aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * See the License for the specific language governing permissions and 14aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo * limitations under the License. 15aea4c1cea20dda7ae7e85fc8924a2d784f70d806Alex Deymo */ 16305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 17305345001d85ca2282112c2a30fe75c7a4773491Alex Deymopackage android.filterpacks.imageproc; 18305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 19305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.Filter; 20305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.FilterContext; 21305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.Frame; 22305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.FrameFormat; 23305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.GenerateFieldPort; 24305345001d85ca2282112c2a30fe75c7a4773491Alex Deymoimport android.filterfw.core.Program; 25d6deb1d0357f47d5525bfaeffa6c201b19abd3e7Alex Deymoimport android.filterfw.core.ShaderProgram; 26d6deb1d0357f47d5525bfaeffa6c201b19abd3e7Alex Deymoimport android.filterfw.format.ImageFormat; 27305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 28305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo/** 29305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo * @hide 30305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo */ 31305345001d85ca2282112c2a30fe75c7a4773491Alex Deymopublic class FlipFilter extends Filter { 32305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 33305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo @GenerateFieldPort(name = "vertical", hasDefault = true) 34305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo private boolean mVertical = false; 35305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 36305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo @GenerateFieldPort(name = "horizontal", hasDefault = true) 37305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo private boolean mHorizontal = false; 38305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 39305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo @GenerateFieldPort(name = "tile_size", hasDefault = true) 40305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo private int mTileSize = 640; 41305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 42305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo private Program mProgram; 43305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo private int mTarget = FrameFormat.TARGET_UNSPECIFIED; 44305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 45758dd53cf503adbcb049909f25f54603d411be09Alex Deymo public FlipFilter(String name) { 46305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo super(name); 47305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo } 48305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 49758dd53cf503adbcb049909f25f54603d411be09Alex Deymo @Override 50305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo public void setupPorts() { 51305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA)); 52305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo addOutputBasedOnInput("image", "image"); 53305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo } 54305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 55305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo @Override 56305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 57305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo return inputFormat; 58305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo } 59305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo 60305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo public void initProgram(FilterContext context, int target) { 61305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo switch (target) { 62305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo case FrameFormat.TARGET_GPU: 63305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo ShaderProgram shaderProgram = ShaderProgram.createIdentity(context); 64305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo shaderProgram.setMaximumTileSize(mTileSize); 65305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo mProgram = shaderProgram; 66305345001d85ca2282112c2a30fe75c7a4773491Alex Deymo break; 67 68 default: 69 throw new RuntimeException("Filter Sharpen does not support frames of " + 70 "target " + target + "!"); 71 } 72 mTarget = target; 73 updateParameters(); 74 } 75 76 @Override 77 public void fieldPortValueUpdated(String name, FilterContext context) { 78 if (mProgram != null) { 79 updateParameters(); 80 } 81 } 82 83 @Override 84 public void process(FilterContext context) { 85 // Get input frame 86 Frame input = pullInput("image"); 87 FrameFormat inputFormat = input.getFormat(); 88 89 // Create program if not created already 90 if (mProgram == null || inputFormat.getTarget() != mTarget) { 91 initProgram(context, inputFormat.getTarget()); 92 } 93 94 // Create output frame 95 Frame output = context.getFrameManager().newFrame(inputFormat); 96 97 // Process 98 mProgram.process(input, output); 99 100 // Push output 101 pushOutput("image", output); 102 103 // Release pushed frame 104 output.release(); 105 } 106 107 private void updateParameters() { 108 float x_origin = (mHorizontal) ? 1.0f : 0.0f; 109 float y_origin = (mVertical) ? 1.0f : 0.0f; 110 111 float width = (mHorizontal) ? -1.0f : 1.0f; 112 float height = (mVertical) ? -1.0f : 1.0f; 113 114 ((ShaderProgram) mProgram).setSourceRect(x_origin, y_origin, width, height); 115 } 116} 117