Chris Craik | c3683b5 | 2012-10-01 18:22:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 com.android.test.hwuicompare; |
| 18 | |
| 19 | import com.android.test.hwuicompare.R; |
| 20 | import com.android.test.hwuicompare.ScriptC_errorCalculator; |
| 21 | |
| 22 | import android.content.Context; |
| 23 | import android.content.res.Resources; |
| 24 | import android.graphics.Bitmap; |
| 25 | import android.graphics.Color; |
| 26 | import android.renderscript.Allocation; |
| 27 | import android.renderscript.Element; |
| 28 | import android.renderscript.RenderScript; |
| 29 | import android.util.Log; |
| 30 | |
| 31 | public class ErrorCalculator { |
| 32 | private static final String LOG_TAG = "ErrorCalculator"; |
| 33 | private static final int REGION_SIZE = 8; |
| 34 | |
| 35 | private static final boolean LOG_TIMING = false; |
| 36 | private static final boolean LOG_CALC = false; |
| 37 | |
| 38 | private final RenderScript mRS; |
| 39 | private Allocation mIdealPixelsAllocation; |
| 40 | private Allocation mGivenPixelsAllocation; |
| 41 | private Allocation mOutputPixelsAllocation; |
| 42 | |
| 43 | private final Allocation mInputRowsAllocation; |
| 44 | private final Allocation mOutputRegionsAllocation; |
| 45 | |
| 46 | private final ScriptC_errorCalculator mScript; |
| 47 | |
| 48 | private final int[] mOutputRowRegions; |
| 49 | |
| 50 | public ErrorCalculator(Context c, Resources resources) { |
| 51 | int width = resources.getDimensionPixelSize(R.dimen.layer_width); |
| 52 | int height = resources.getDimensionPixelSize(R.dimen.layer_height); |
| 53 | mOutputRowRegions = new int[height / REGION_SIZE]; |
| 54 | |
| 55 | mRS = RenderScript.create(c); |
| 56 | int[] rowIndices = new int[height / REGION_SIZE]; |
| 57 | for (int i = 0; i < rowIndices.length; i++) |
| 58 | rowIndices[i] = i * REGION_SIZE; |
| 59 | |
| 60 | mScript = new ScriptC_errorCalculator(mRS, resources, R.raw.errorcalculator); |
| 61 | mScript.set_HEIGHT(height); |
| 62 | mScript.set_WIDTH(width); |
| 63 | mScript.set_REGION_SIZE(REGION_SIZE); |
| 64 | |
| 65 | mInputRowsAllocation = Allocation.createSized(mRS, Element.I32(mRS), rowIndices.length, |
| 66 | Allocation.USAGE_SCRIPT); |
| 67 | mInputRowsAllocation.copyFrom(rowIndices); |
| 68 | mOutputRegionsAllocation = Allocation.createSized(mRS, Element.I32(mRS), |
| 69 | mOutputRowRegions.length, Allocation.USAGE_SCRIPT); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | private static long startMillis, middleMillis; |
| 74 | |
| 75 | public float calcErrorRS(Bitmap ideal, Bitmap given) { |
| 76 | if (LOG_TIMING) { |
| 77 | startMillis = System.currentTimeMillis(); |
| 78 | } |
| 79 | |
| 80 | mIdealPixelsAllocation = Allocation.createFromBitmap(mRS, ideal, |
| 81 | Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| 82 | mGivenPixelsAllocation = Allocation.createFromBitmap(mRS, given, |
| 83 | Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| 84 | |
| 85 | mScript.bind_ideal(mIdealPixelsAllocation); |
| 86 | mScript.bind_given(mGivenPixelsAllocation); |
| 87 | |
| 88 | mScript.forEach_countInterestingRegions(mInputRowsAllocation, mOutputRegionsAllocation); |
| 89 | mOutputRegionsAllocation.copyTo(mOutputRowRegions); |
| 90 | |
| 91 | int regionCount = 0; |
| 92 | for (int region : mOutputRowRegions) { |
| 93 | regionCount += region; |
| 94 | } |
| 95 | int interestingPixels = Math.max(1, regionCount) * REGION_SIZE * REGION_SIZE; |
| 96 | |
| 97 | if (LOG_TIMING) { |
| 98 | long startMillis2 = System.currentTimeMillis(); |
| 99 | } |
| 100 | |
| 101 | mScript.forEach_accumulateError(mInputRowsAllocation, mOutputRegionsAllocation); |
| 102 | mOutputRegionsAllocation.copyTo(mOutputRowRegions); |
| 103 | float totalError = 0; |
| 104 | for (int row : mOutputRowRegions) { |
| 105 | totalError += row; |
| 106 | } |
| 107 | totalError /= 1024.0f; |
| 108 | |
| 109 | if (LOG_TIMING) { |
| 110 | long finalMillis = System.currentTimeMillis(); |
| 111 | Log.d(LOG_TAG, "rs: first part took " + (middleMillis - startMillis) + "ms"); |
| 112 | Log.d(LOG_TAG, "rs: last part took " + (finalMillis - middleMillis) + "ms"); |
| 113 | } |
| 114 | if (LOG_CALC) { |
| 115 | Log.d(LOG_TAG, "rs: error " + totalError + ", pixels " + interestingPixels); |
| 116 | } |
| 117 | return totalError / interestingPixels; |
| 118 | } |
| 119 | |
| 120 | public void calcErrorHeatmapRS(Bitmap ideal, Bitmap given, Bitmap output) { |
| 121 | mIdealPixelsAllocation = Allocation.createFromBitmap(mRS, ideal, |
| 122 | Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| 123 | mGivenPixelsAllocation = Allocation.createFromBitmap(mRS, given, |
| 124 | Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| 125 | |
| 126 | mScript.bind_ideal(mIdealPixelsAllocation); |
| 127 | mScript.bind_given(mGivenPixelsAllocation); |
| 128 | |
| 129 | mOutputPixelsAllocation = Allocation.createFromBitmap(mRS, output, |
| 130 | Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT); |
| 131 | mScript.forEach_displayDifference(mOutputPixelsAllocation, mOutputPixelsAllocation); |
| 132 | mOutputPixelsAllocation.copyTo(output); |
| 133 | } |
| 134 | |
| 135 | public static float calcError(Bitmap ideal, Bitmap given) { |
| 136 | if (LOG_TIMING) { |
| 137 | startMillis = System.currentTimeMillis(); |
| 138 | } |
| 139 | |
| 140 | int interestingRegions = 0; |
| 141 | for (int x = 0; x < ideal.getWidth(); x += REGION_SIZE) { |
| 142 | for (int y = 0; y < ideal.getWidth(); y += REGION_SIZE) { |
| 143 | if (inspectRegion(ideal, x, y)) { |
| 144 | interestingRegions++; |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | int interestingPixels = Math.max(1, interestingRegions) * REGION_SIZE * REGION_SIZE; |
| 150 | |
| 151 | if (LOG_TIMING) { |
| 152 | long startMillis2 = System.currentTimeMillis(); |
| 153 | } |
| 154 | |
| 155 | float totalError = 0; |
| 156 | for (int x = 0; x < ideal.getWidth(); x++) { |
| 157 | for (int y = 0; y < ideal.getHeight(); y++) { |
| 158 | int idealColor = ideal.getPixel(x, y); |
| 159 | int givenColor = given.getPixel(x, y); |
| 160 | if (idealColor == givenColor) |
| 161 | continue; |
| 162 | totalError += Math.abs(Color.red(idealColor) - Color.red(givenColor)); |
| 163 | totalError += Math.abs(Color.green(idealColor) - Color.green(givenColor)); |
| 164 | totalError += Math.abs(Color.blue(idealColor) - Color.blue(givenColor)); |
| 165 | totalError += Math.abs(Color.alpha(idealColor) - Color.alpha(givenColor)); |
| 166 | } |
| 167 | } |
| 168 | totalError /= 1024.0f; |
| 169 | if (LOG_TIMING) { |
| 170 | long finalMillis = System.currentTimeMillis(); |
| 171 | Log.d(LOG_TAG, "dvk: first part took " + (middleMillis - startMillis) + "ms"); |
| 172 | Log.d(LOG_TAG, "dvk: last part took " + (finalMillis - middleMillis) + "ms"); |
| 173 | } |
| 174 | if (LOG_CALC) { |
| 175 | Log.d(LOG_TAG, "dvk: error " + totalError + ", pixels " + interestingPixels); |
| 176 | } |
| 177 | return totalError / interestingPixels; |
| 178 | } |
| 179 | |
| 180 | private static boolean inspectRegion(Bitmap ideal, int x, int y) { |
| 181 | int regionColor = ideal.getPixel(x, y); |
| 182 | for (int i = 0; i < REGION_SIZE; i++) { |
| 183 | for (int j = 0; j < REGION_SIZE; j++) { |
| 184 | if (ideal.getPixel(x + i, y + j) != regionColor) |
| 185 | return true; |
| 186 | } |
| 187 | } |
| 188 | return false; |
| 189 | } |
| 190 | } |