/* | |
* Copyright (C) 2009 Apple Inc. All rights reserved. | |
* (C) 2009 Brent Fulgham <bfulgham@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 "PixelDumpSupportCairo.h" | |
#include "DumpRenderTree.h" | |
#include "PixelDumpSupport.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" | |
#endif | |
using namespace std; | |
static cairo_status_t writeFunction(void* closure, const unsigned char* data, unsigned int length) | |
{ | |
Vector<unsigned char>* in = reinterpret_cast<Vector<unsigned char>*>(closure); | |
in->append(data, length); | |
return CAIRO_STATUS_SUCCESS; | |
} | |
static void printPNG(cairo_surface_t* image) | |
{ | |
Vector<unsigned char> pixelData; | |
// Only PNG output is supported for now. | |
cairo_surface_write_to_png_stream(image, writeFunction, &pixelData); | |
const size_t dataLength = pixelData.size(); | |
const unsigned char* data = pixelData.data(); | |
printPNG(data, dataLength); | |
} | |
void computeMD5HashStringForBitmapContext(BitmapContext* context, char hashString[33]) | |
{ | |
cairo_t* bitmapContext = context->cairoContext(); | |
cairo_surface_t* surface = cairo_get_target(bitmapContext); | |
ASSERT(cairo_image_surface_get_format(surface) == CAIRO_FORMAT_ARGB32); // ImageDiff assumes 32 bit RGBA, we must as well. | |
size_t pixelsHigh = cairo_image_surface_get_height(surface); | |
size_t pixelsWide = cairo_image_surface_get_width(surface); | |
size_t bytesPerRow = pixelsWide * cairo_image_surface_get_stride(surface); | |
MD5_CTX md5Context; | |
MD5_Init(&md5Context); | |
unsigned char* bitmapData = static_cast<unsigned char*>(cairo_image_surface_get_data(surface)); | |
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) | |
{ | |
cairo_surface_t* surface = cairo_get_target(context->cairoContext()); | |
printPNG(surface); | |
} |