diff options
Diffstat (limited to 'Tools/DumpRenderTree/cg/PixelDumpSupportCG.cpp')
-rw-r--r-- | Tools/DumpRenderTree/cg/PixelDumpSupportCG.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/Tools/DumpRenderTree/cg/PixelDumpSupportCG.cpp b/Tools/DumpRenderTree/cg/PixelDumpSupportCG.cpp new file mode 100644 index 0000000..5cf32f1 --- /dev/null +++ b/Tools/DumpRenderTree/cg/PixelDumpSupportCG.cpp @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved. + * (C) 2007 Graham Dennis (graham.dennis@gmail.com) + * (C) 2007 Eric Seidel <eric@webkit.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "PixelDumpSupportCG.h" + +#include "DumpRenderTree.h" +#include "PixelDumpSupport.h" +#include <ImageIO/CGImageDestination.h> +#include <algorithm> +#include <ctype.h> +#include <wtf/Assertions.h> +#include <wtf/RefPtr.h> +#include <wtf/RetainPtr.h> +#include <wtf/StringExtras.h> + +#if PLATFORM(WIN) +#include "MD5.h" +#elif PLATFORM(MAC) +#include <LaunchServices/UTCoreTypes.h> +#define COMMON_DIGEST_FOR_OPENSSL +#include <CommonCrypto/CommonDigest.h> +#endif + +using namespace std; + +#if PLATFORM(WIN) +static const CFStringRef kUTTypePNG = CFSTR("public.png"); +#endif + +static void printPNG(CGImageRef image) +{ + RetainPtr<CFMutableDataRef> imageData(AdoptCF, CFDataCreateMutable(0, 0)); + RetainPtr<CGImageDestinationRef> imageDest(AdoptCF, CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0)); + CGImageDestinationAddImage(imageDest.get(), image, 0); + CGImageDestinationFinalize(imageDest.get()); + + const UInt8* data = CFDataGetBytePtr(imageData.get()); + CFIndex dataLength = CFDataGetLength(imageData.get()); + + printPNG(static_cast<const unsigned char*>(data), static_cast<size_t>(dataLength)); +} + +void computeMD5HashStringForBitmapContext(BitmapContext* context, char hashString[33]) +{ + CGContextRef bitmapContext = context->cgContext(); + + ASSERT(CGBitmapContextGetBitsPerPixel(bitmapContext) == 32); // ImageDiff assumes 32 bit RGBA, we must as well. + size_t pixelsHigh = CGBitmapContextGetHeight(bitmapContext); + size_t pixelsWide = CGBitmapContextGetWidth(bitmapContext); + size_t bytesPerRow = CGBitmapContextGetBytesPerRow(bitmapContext); + + // We need to swap the bytes to ensure consistent hashes independently of endianness + MD5_CTX md5Context; + MD5_Init(&md5Context); + unsigned char* bitmapData = static_cast<unsigned char*>(CGBitmapContextGetData(bitmapContext)); +#if PLATFORM(MAC) + if ((CGBitmapContextGetBitmapInfo(bitmapContext) & kCGBitmapByteOrderMask) == kCGBitmapByteOrder32Big) { + for (unsigned row = 0; row < pixelsHigh; row++) { + uint32_t buffer[pixelsWide]; + for (unsigned column = 0; column < pixelsWide; column++) + buffer[column] = OSReadLittleInt32(bitmapData, 4 * column); + MD5_Update(&md5Context, buffer, 4 * pixelsWide); + bitmapData += bytesPerRow; + } + } else +#endif + { + for (unsigned row = 0; row < pixelsHigh; row++) { + MD5_Update(&md5Context, bitmapData, 4 * pixelsWide); + bitmapData += bytesPerRow; + } + } + unsigned char hash[16]; + MD5_Final(hash, &md5Context); + + hashString[0] = '\0'; + for (int i = 0; i < 16; i++) + snprintf(hashString, 33, "%s%02x", hashString, hash[i]); +} + +void dumpBitmap(BitmapContext* context) +{ + RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(context->cgContext())); + printPNG(image.get()); +} |