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/*
* 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 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/ImageIO.h>
#include <algorithm>
#include <ctype.h>
#include <wtf/Assertions.h>
#include <wtf/RefPtr.h>
#include <wtf/RetainPtr.h>
#include <wtf/SHA1.h>
#if PLATFORM(IOS_FAMILY)
#include <MobileCoreServices/UTCoreTypes.h>
#define COMMON_DIGEST_FOR_OPENSSL
#include <CommonCrypto/CommonDigest.h>
#elif PLATFORM(MAC)
#include <CoreServices/CoreServices.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, const char* checksum, double scaleFactor)
{
auto imageData = adoptCF(CFDataCreateMutable(0, 0));
auto imageDest = adoptCF(CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0));
auto propertiesDictionary = adoptCF(CFDictionaryCreateMutable(kCFAllocatorDefault, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
double resolutionWidth = 72.0 * scaleFactor;
double resolutionHeight = 72.0 * scaleFactor;
auto resolutionWidthNumber = adoptCF(CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &resolutionWidth));
auto resolutionHeightNumber = adoptCF(CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &resolutionHeight));
CFDictionarySetValue(propertiesDictionary.get(), kCGImagePropertyDPIWidth, resolutionWidthNumber.get());
CFDictionarySetValue(propertiesDictionary.get(), kCGImagePropertyDPIHeight, resolutionHeightNumber.get());
CGImageDestinationAddImage(imageDest.get(), image, propertiesDictionary.get());
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), checksum);
}
void computeSHA1HashStringForBitmapContext(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
SHA1 sha1;
unsigned char* bitmapData = static_cast<unsigned char*>(CGBitmapContextGetData(bitmapContext));
#if PLATFORM(COCOA)
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);
sha1.addBytes(reinterpret_cast<const uint8_t*>(buffer), 4 * pixelsWide);
bitmapData += bytesPerRow;
}
} else
#endif
{
for (unsigned row = 0; row < pixelsHigh; row++) {
sha1.addBytes(bitmapData, 4 * pixelsWide);
bitmapData += bytesPerRow;
}
}
SHA1::Digest hash;
sha1.computeHash(hash);
hashString[0] = '\0';
for (int i = 0; i < 16; i++)
snprintf(hashString, 33, "%s%02x", hashString, hash[i]);
}
void dumpBitmap(BitmapContext* context, const char* checksum)
{
RetainPtr<CGImageRef> image = adoptCF(CGBitmapContextCreateImage(context->cgContext()));
printPNG(image.get(), checksum, context->scaleFactor());
}
#if PLATFORM(COCOA)
RefPtr<BitmapContext> createBitmapContext(size_t pixelsWide, size_t pixelsHigh, size_t& rowBytes, void*& buffer)
{
rowBytes = (4 * pixelsWide + 63) & ~63; // Use a multiple of 64 bytes to improve CG performance
buffer = calloc(pixelsHigh, rowBytes);
if (!buffer) {
WTFLogAlways("DumpRenderTree: calloc(%zu, %zu) failed\n", pixelsHigh, rowBytes);
return nullptr;
}
// Creating this bitmap in the device color space prevents any color conversion when the image of the web view is drawn into it.
RetainPtr<CGColorSpaceRef> colorSpace = adoptCF(CGColorSpaceCreateDeviceRGB());
auto context = adoptCF(CGBitmapContextCreate(buffer, pixelsWide, pixelsHigh, 8, rowBytes, colorSpace.get(), static_cast<uint32_t>(kCGImageAlphaPremultipliedFirst) | static_cast<uint32_t>(kCGBitmapByteOrder32Host)));
if (!context) {
WTFLogAlways("DumpRenderTree: CGBitmapContextCreate(%p, %zu, %zu, 8, %zu, %p, 0x%x) failed\n", buffer, pixelsHigh, pixelsWide, rowBytes, colorSpace.get(), static_cast<uint32_t>(kCGImageAlphaPremultipliedFirst) | static_cast<uint32_t>(kCGBitmapByteOrder32Host));
free(buffer);
buffer = nullptr;
return nullptr;
}
return BitmapContext::createByAdoptingBitmapAndContext(buffer, WTFMove(context));
}
#endif