1 /* 2 * Copyright 2014 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 package android.hardware.camera2.cts.rs; 18 19 import static android.hardware.camera2.cts.helpers.Preconditions.*; 20 21 import android.util.Size; 22 import android.hardware.camera2.cts.ScriptC_means_yuvx_444_1d_to_single; 23 import android.hardware.camera2.cts.rs.AllocationInfo.ElementInfo; 24 import android.renderscript.Element; 25 26 /** 27 * Average a {@code Hx1} {@link ElementInfo#U8_3 U8_3} {@link Allocation allocation} into a 1x1 28 * {@code U8x3} {@link Allocation allocation}. 29 * 30 * <p>Users of this script should chain {@link ScriptYuvMeans1d} immediately before this 31 * to average the input down to a 1x1 element.</p> 32 */ 33 public class ScriptYuvMeans1d extends Script<ScriptC_means_yuvx_444_1d_to_single>{ 34 private static final String TAG = "ScriptYuvMeans1d"; 35 36 private static final Size UNIT_SQUARE = new Size(/*width*/1, /*height*/1); 37 38 private static AllocationInfo createOutputInfo(AllocationInfo inputInfo) { 39 checkNotNull("inputInfo", inputInfo); 40 // (input) Hx1 -> 1x1 41 return AllocationInfo.newInstance(Element.U8_3(getRS()), UNIT_SQUARE); 42 } 43 44 public ScriptYuvMeans1d(AllocationInfo inputInfo) { 45 super(inputInfo, 46 createOutputInfo(inputInfo), 47 new ScriptC_means_yuvx_444_1d_to_single(getRS())); 48 49 // U8x3 is the only supported element here 50 if (!inputInfo.isElementEqualTo(ElementInfo.U8_3)) { 51 throw new UnsupportedOperationException("Unsupported element " 52 + inputInfo.getElement()); 53 } 54 } 55 56 @Override 57 protected void executeUnchecked() { 58 mScript.forEach_means_yuvx_444(mOutputAllocation); 59 } 60 61 @Override 62 protected void updateScriptInput() { 63 mScript.set_mInput(mInputAllocation); 64 65 int width = mInputAllocation.getType().getX(); 66 mScript.set_width(width); 67 mScript.set_inv_width(1.0f / width); 68 } 69 } 70
