1563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark/* 2563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * Copyright (C) 2005, 2007 Apple Inc. All rights reserved. 3563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * Copyright (C) 2005 Ben La Monica <ben.lamonica@gmail.com>. All rights reserved. 4563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * 5563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * Redistribution and use in source and binary forms, with or without 6563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * modification, are permitted provided that the following conditions 7563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * are met: 8563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * 1. Redistributions of source code must retain the above copyright 9563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * notice, this list of conditions and the following disclaimer. 10563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * 2. Redistributions in binary form must reproduce the above copyright 11563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * notice, this list of conditions and the following disclaimer in the 12563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * documentation and/or other materials provided with the distribution. 13563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * 14563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY 15563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR 18563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark */ 26563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 27563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#define min min 28563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 292bde8e466a4451c7319e3a072d118917957d6554Steve Block// FIXME: We need to be able to include these defines from a config.h somewhere. 302bde8e466a4451c7319e3a072d118917957d6554Steve Block#define JS_EXPORT_PRIVATE 312bde8e466a4451c7319e3a072d118917957d6554Steve Block#define WTF_EXPORT_PRIVATE 322bde8e466a4451c7319e3a072d118917957d6554Steve Block 33563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <stdio.h> 34563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <wtf/Platform.h> 35563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <wtf/RetainPtr.h> 36563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 37563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#if PLATFORM(WIN) 38563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <winsock2.h> 39563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <windows.h> 40563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <fcntl.h> 41563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <io.h> 42563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <wtf/MathExtras.h> 43563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 44563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 45563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <CoreGraphics/CGBitmapContext.h> 46563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <CoreGraphics/CGImage.h> 47563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <ImageIO/CGImageDestination.h> 48563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 49563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#if PLATFORM(MAC) 50563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#include <LaunchServices/UTCoreTypes.h> 51563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 52563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 53563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#ifndef CGFLOAT_DEFINED 54563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#ifdef __LP64__ 55563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarktypedef double CGFloat; 56563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#else 57563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarktypedef float CGFloat; 58563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 59563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#define CGFLOAT_DEFINED 1 60563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 61563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 62563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkusing namespace std; 63563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 64563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#if PLATFORM(WIN) 65563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic inline float strtof(const char *nptr, char **endptr) 66563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 67563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark return strtod(nptr, endptr); 68563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 69563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic const CFStringRef kUTTypePNG = CFSTR("public.png"); 70563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 71563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 72563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic RetainPtr<CGImageRef> createImageFromStdin(int bytesRemaining) 73563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 74563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark unsigned char buffer[2048]; 75563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CFMutableDataRef> data(AdoptCF, CFDataCreateMutable(0, bytesRemaining)); 76563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 77563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark while (bytesRemaining > 0) { 78563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark size_t bytesToRead = min(bytesRemaining, 2048); 79563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark size_t bytesRead = fread(buffer, 1, bytesToRead, stdin); 80563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark CFDataAppendBytes(data.get(), buffer, static_cast<CFIndex>(bytesRead)); 81563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark bytesRemaining -= static_cast<int>(bytesRead); 82563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 83563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CGDataProviderRef> dataProvider(AdoptCF, CGDataProviderCreateWithCFData(data.get())); 84563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark return RetainPtr<CGImageRef>(AdoptCF, CGImageCreateWithPNGDataProvider(dataProvider.get(), 0, false, kCGRenderingIntentDefault)); 85563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 86563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 87563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic void releaseMallocBuffer(void* info, const void* data, size_t size) 88563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 89563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark free((void*)data); 90563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 91563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 92563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic RetainPtr<CGImageRef> createDifferenceImage(CGImageRef baseImage, CGImageRef testImage, float& difference) 93563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 94563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark size_t width = CGImageGetWidth(baseImage); 95563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark size_t height = CGImageGetHeight(baseImage); 96563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark size_t rowBytes = width * 4; 970bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 98563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Draw base image in bitmap context 99563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark void* baseBuffer = calloc(height, rowBytes); 1000bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch RetainPtr<CGContextRef> baseContext(AdoptCF, CGBitmapContextCreate(baseBuffer, width, height, 8, rowBytes, CGImageGetColorSpace(baseImage), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host)); 1010bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch CGContextDrawImage(baseContext.get(), CGRectMake(0, 0, width, height), baseImage); 1020bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 103563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Draw test image in bitmap context 104563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark void* buffer = calloc(height, rowBytes); 1050bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch RetainPtr<CGContextRef> context(AdoptCF, CGBitmapContextCreate(buffer, width, height, 8, rowBytes, CGImageGetColorSpace(testImage), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host)); 1060bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch CGContextDrawImage(context.get(), CGRectMake(0, 0, width, height), testImage); 1070bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 108563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Compare the content of the 2 bitmaps 109563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark void* diffBuffer = malloc(width * height); 110563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float count = 0.0f; 111563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float sum = 0.0f; 112563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float maxDistance = 0.0f; 113563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark unsigned char* basePixel = (unsigned char*)baseBuffer; 114563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark unsigned char* pixel = (unsigned char*)buffer; 115563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark unsigned char* diff = (unsigned char*)diffBuffer; 116563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark for (size_t y = 0; y < height; ++y) { 117563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark for (size_t x = 0; x < width; ++x) { 118563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float red = (pixel[0] - basePixel[0]) / max<float>(255 - basePixel[0], basePixel[0]); 119563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float green = (pixel[1] - basePixel[1]) / max<float>(255 - basePixel[1], basePixel[1]); 120563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float blue = (pixel[2] - basePixel[2]) / max<float>(255 - basePixel[2], basePixel[2]); 121563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float alpha = (pixel[3] - basePixel[3]) / max<float>(255 - basePixel[3], basePixel[3]); 122563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float distance = sqrtf(red * red + green * green + blue * blue + alpha * alpha) / 2.0f; 123563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 124563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark *diff++ = (unsigned char)(distance * 255.0f); 125563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 126563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (distance >= 1.0f / 255.0f) { 127563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark count += 1.0f; 128563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark sum += distance; 129563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (distance > maxDistance) 130563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark maxDistance = distance; 131563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 132563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 133563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark basePixel += 4; 134563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark pixel += 4; 135563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 136563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 137563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 138563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Compute the difference as a percentage combining both the number of different pixels and their difference amount i.e. the average distance over the entire image 139563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (count > 0.0f) 140563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark difference = 100.0f * sum / (height * width); 141563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark else 142563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark difference = 0.0f; 1430bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 1440bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch RetainPtr<CGImageRef> diffImage; 145563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Generate a normalized diff image if there is any difference 146563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (difference > 0.0f) { 147563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (maxDistance < 1.0f) { 148563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark diff = (unsigned char*)diffBuffer; 149563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark for(size_t p = 0; p < height * width; ++p) 150563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark diff[p] = diff[p] / maxDistance; 151563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 152563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 1530bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch static CGColorSpaceRef diffColorspace = CGColorSpaceCreateDeviceGray(); 1540bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch RetainPtr<CGDataProviderRef> provider(AdoptCF, CGDataProviderCreateWithData(0, diffBuffer, width * height, releaseMallocBuffer)); 1550bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch diffImage.adoptCF(CGImageCreate(width, height, 8, 8, width, diffColorspace, 0, provider.get(), 0, false, kCGRenderingIntentDefault)); 156563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 157563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark else 158563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark free(diffBuffer); 159563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 160563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // Destroy drawing buffers 161563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (buffer) 162563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark free(buffer); 163563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (baseBuffer) 164563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark free(baseBuffer); 165563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 166563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark return diffImage; 167563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 168563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 169563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkstatic inline bool imageHasAlpha(CGImageRef image) 170563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 171563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark CGImageAlphaInfo info = CGImageGetAlphaInfo(image); 172563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 173563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark return (info >= kCGImageAlphaPremultipliedLast) && (info <= kCGImageAlphaFirst); 174563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 175563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 176563af33bc48281d19dce701398dbb88cb54fd7ecCary Clarkint main(int argc, const char* argv[]) 177563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark{ 178563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#if PLATFORM(WIN) 179563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark _setmode(0, _O_BINARY); 180563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark _setmode(1, _O_BINARY); 181563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark#endif 182563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 183563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float tolerance = 0.0f; 184563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 185563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark for (int i = 1; i < argc; ++i) { 186563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (!strcmp(argv[i], "-t") || !strcmp(argv[i], "--tolerance")) { 187563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (i >= argc - 1) 188563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark exit(1); 189563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark tolerance = strtof(argv[i + 1], 0); 190563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark ++i; 191563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark continue; 192563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 193563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 194563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 195563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark char buffer[2048]; 196563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CGImageRef> actualImage; 197563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CGImageRef> baselineImage; 198563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 199563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark while (fgets(buffer, sizeof(buffer), stdin)) { 200563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark // remove the CR 201563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark char* newLineCharacter = strchr(buffer, '\n'); 202563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (newLineCharacter) 203563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark *newLineCharacter = '\0'; 204563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 205563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (!strncmp("Content-Length: ", buffer, 16)) { 206563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark strtok(buffer, " "); 207563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark int imageSize = strtol(strtok(0, " "), 0, 10); 208563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 209563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (imageSize > 0 && !actualImage) 210563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark actualImage = createImageFromStdin(imageSize); 211563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark else if (imageSize > 0 && !baselineImage) 212563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark baselineImage = createImageFromStdin(imageSize); 213563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark else 214563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fputs("error, image size must be specified.\n", stdout); 215563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 216563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 217563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (actualImage && baselineImage) { 218563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CGImageRef> diffImage; 219563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark float difference = 100.0f; 220563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 221563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if ((CGImageGetWidth(actualImage.get()) == CGImageGetWidth(baselineImage.get())) && (CGImageGetHeight(actualImage.get()) == CGImageGetHeight(baselineImage.get())) && (imageHasAlpha(actualImage.get()) == imageHasAlpha(baselineImage.get()))) { 222563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark diffImage = createDifferenceImage(actualImage.get(), baselineImage.get(), difference); // difference is passed by reference 223563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (difference <= tolerance) 224563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark difference = 0.0f; 225563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark else { 226563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark difference = roundf(difference * 100.0f) / 100.0f; 227563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark difference = max(difference, 0.01f); // round to 2 decimal places 228563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 229563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } else 230563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fputs("error, test and reference image have different properties.\n", stderr); 231563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 232563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (difference > 0.0f) { 233563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark if (diffImage) { 234563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CFMutableDataRef> imageData(AdoptCF, CFDataCreateMutable(0, 0)); 235563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark RetainPtr<CGImageDestinationRef> imageDest(AdoptCF, CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0)); 236563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark CGImageDestinationAddImage(imageDest.get(), diffImage.get(), 0); 237563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark CGImageDestinationFinalize(imageDest.get()); 238563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark printf("Content-Length: %lu\n", CFDataGetLength(imageData.get())); 239563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fwrite(CFDataGetBytePtr(imageData.get()), 1, CFDataGetLength(imageData.get()), stdout); 240563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 241563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 242563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fprintf(stdout, "diff: %01.2f%% failed\n", difference); 243563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } else 244563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fprintf(stdout, "diff: %01.2f%% passed\n", difference); 245563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 246563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark actualImage = 0; 247563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark baselineImage = 0; 248563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 249563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 250563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark fflush(stdout); 251563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark } 252563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark 253563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark return 0; 254563af33bc48281d19dce701398dbb88cb54fd7ecCary Clark} 255