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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 "TestInvocation.h"
#include "PlatformWebView.h"
#include "TestController.h"
#include <ImageIO/CGImageDestination.h>
#include <LaunchServices/UTCoreTypes.h>
#include <WebKit2/WKPage.h>
#include <wtf/RetainPtr.h>
#define COMMON_DIGEST_FOR_OPENSSL
#include <CommonCrypto/CommonDigest.h>
namespace WTR {
static CGContextRef createCGContextFromPlatformView(PlatformWebView* platformWebView)
{
WKView* view = platformWebView->platformView();
[view display];
NSSize webViewSize = [view frame].size;
size_t pixelsWide = static_cast<size_t>(webViewSize.width);
size_t pixelsHigh = static_cast<size_t>(webViewSize.height);
size_t rowBytes = (4 * pixelsWide + 63) & ~63;
void* buffer = calloc(pixelsHigh, rowBytes);
CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
CGContextRef context = CGBitmapContextCreate(buffer, pixelsWide, pixelsHigh, 8, rowBytes, colorSpace, kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host);
CGColorSpaceRelease(colorSpace);
CGImageRef image = CGWindowListCreateImage(CGRectNull, kCGWindowListOptionIncludingWindow, [[view window] windowNumber], kCGWindowImageBoundsIgnoreFraming | kCGWindowImageShouldBeOpaque);
CGContextDrawImage(context, CGRectMake(0, 0, CGImageGetWidth(image), CGImageGetHeight(image)), image);
CGImageRelease(image);
return context;
}
void computeMD5HashStringForContext(CGContextRef bitmapContext, char hashString[33])
{
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 ((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 {
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]);
}
static void dumpBitmap(CGContextRef bitmapContext)
{
RetainPtr<CGImageRef> image(AdoptCF, CGBitmapContextCreateImage(bitmapContext));
RetainPtr<CFMutableDataRef> imageData(AdoptCF, CFDataCreateMutable(0, 0));
RetainPtr<CGImageDestinationRef> imageDest(AdoptCF, CGImageDestinationCreateWithData(imageData.get(), kUTTypePNG, 1, 0));
CGImageDestinationAddImage(imageDest.get(), image.get(), 0);
CGImageDestinationFinalize(imageDest.get());
const unsigned char* data = CFDataGetBytePtr(imageData.get());
const size_t dataLength = CFDataGetLength(imageData.get());
fprintf(stdout, "Content-Type: %s\n", "image/png");
fprintf(stdout, "Content-Length: %lu\n", static_cast<unsigned long>(dataLength));
const size_t bytesToWriteInOneChunk = 1 << 15;
size_t dataRemainingToWrite = dataLength;
while (dataRemainingToWrite) {
size_t bytesToWriteInThisChunk = std::min(dataRemainingToWrite, bytesToWriteInOneChunk);
size_t bytesWritten = fwrite(data, 1, bytesToWriteInThisChunk, stdout);
if (bytesWritten != bytesToWriteInThisChunk)
break;
dataRemainingToWrite -= bytesWritten;
data += bytesWritten;
}
}
static void forceRepaintFunction(WKErrorRef, void* context)
{
*static_cast<bool*>(context) = true;
}
void TestInvocation::dumpPixelsAndCompareWithExpected()
{
WKPageForceRepaint(TestController::shared().mainWebView()->page(), &m_gotRepaint, forceRepaintFunction);
TestController::shared().runUntil(m_gotRepaint, TestController::LongTimeout);
CGContextRef context = createCGContextFromPlatformView(TestController::shared().mainWebView());
// Compute the hash of the bitmap context pixels
char actualHash[33];
computeMD5HashStringForContext(context, actualHash);
fprintf(stdout, "\nActualHash: %s\n", actualHash);
// Check the computed hash against the expected one and dump image on mismatch
bool hashesMatch = false;
if (m_expectedPixelHash.length() > 0) {
ASSERT(m_expectedPixelHash.length() == 32);
fprintf(stdout, "\nExpectedHash: %s\n", m_expectedPixelHash.c_str());
// FIXME: Do case insensitive compare.
if (m_expectedPixelHash == actualHash)
hashesMatch = true;
}
if (!hashesMatch)
dumpBitmap(context);
}
} // namespace WTR
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