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 #define LOG_NDEBUG 0 17 18 #define LOG_TAG "ExposureCompensationTest" 19 #include <utils/Log.h> 20 #include <utils/Timers.h> 21 #include <cmath> 22 #include <string> 23 #include <stdio.h> 24 25 #include "vec2.h" 26 #include "vec3.h" 27 #include "exposurecompensationtest.h" 28 29 const float GAMMA_CORRECTION = 2.2f; 30 void ExposureCompensationTest::processData() { 31 ALOGV("Start Processing Exposure Compensation Test Data!"); 32 clearDebugImage(); 33 34 if (mDebugText != NULL) { 35 delete mDebugText; 36 mDebugText = NULL; 37 } 38 39 int numTests = mExposureValues.size(); 40 int numPatches = mCheckerColors[0].size(); 41 ALOGV("Processing %d tests with %d patches", numTests, numPatches); 42 43 mDebugText = new char[320 * numTests]; 44 mDebugText[0] = 0; 45 char* debugText = new char[50]; 46 47 Vec3i red(255, 0, 0); 48 Vec3i green(0, 255, 0); 49 Vec3i blue(0, 0, 255); 50 51 float minExposure = -3.0f; 52 float scale = 9.0f; 53 for (int i = 0; i < numTests; ++i) { 54 snprintf(debugText, 50, "Exposure is %f \n", mExposureValues[i]); 55 strcat(mDebugText, debugText); 56 for (int j = 0; j < numPatches; ++j) { 57 int exposureRed = static_cast<int>(( 58 log(static_cast<float>(mReferenceColors[j].r())) 59 / log(2.0f) * GAMMA_CORRECTION + 60 mExposureValues[i] - minExposure) * scale); 61 int exposureGreen = static_cast<int>(( 62 log(static_cast<float>(mReferenceColors[j].g())) 63 / log(2.0f) * GAMMA_CORRECTION + 64 mExposureValues[i] - minExposure) * scale); 65 int exposureBlue = static_cast<int>(( 66 log(static_cast<float>(mReferenceColors[j].b())) 67 / log(2.0f) * GAMMA_CORRECTION + 68 mExposureValues[i] - minExposure) * scale); 69 70 snprintf(debugText, 50, "%d %f %d %f %d %f \n", 71 exposureRed, mCheckerColors[i][j].r(), 72 exposureGreen, mCheckerColors[i][j].g(), 73 exposureBlue, mCheckerColors[i][j].b()); 74 75 ALOGV("%s", debugText); 76 strcat(mDebugText, debugText); 77 78 drawPoint(200 - exposureRed, mCheckerColors[i][j].r(), red); 79 drawPoint(200 - exposureGreen, mCheckerColors[i][j].g(), green); 80 drawPoint(200 - exposureBlue, mCheckerColors[i][j].b(), blue); 81 } 82 } 83 mExposureValues.clear(); 84 mCheckerColors.clear(); 85 } 86 87 void ExposureCompensationTest::initializeReferenceColors() { 88 mReferenceColors.resize(6); 89 90 mReferenceColors[0].set(243, 243, 242); 91 mReferenceColors[1].set(200, 200, 200); 92 mReferenceColors[2].set(160, 160, 160); 93 mReferenceColors[3].set(122, 122, 121); 94 mReferenceColors[4].set(85, 85, 85); 95 mReferenceColors[5].set(52, 52, 52); 96 } 97
