diff options
Diffstat (limited to 'Tools/DumpRenderTree/cairo/PixelDumpSupportCairo.cpp')
-rw-r--r-- | Tools/DumpRenderTree/cairo/PixelDumpSupportCairo.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/Tools/DumpRenderTree/cairo/PixelDumpSupportCairo.cpp b/Tools/DumpRenderTree/cairo/PixelDumpSupportCairo.cpp new file mode 100644 index 000000000..9c8931075 --- /dev/null +++ b/Tools/DumpRenderTree/cairo/PixelDumpSupportCairo.cpp @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * (C) 2009 Brent Fulgham <bfulgham@webkit.org> + * (C) 2010 Igalia S.L + * + * 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 "PixelDumpSupportCairo.h" + +#include "DumpRenderTree.h" +#include "PixelDumpSupport.h" +#include <algorithm> +#include <ctype.h> +#include <wtf/Assertions.h> +#include <wtf/MD5.h> +#include <wtf/RefPtr.h> +#include <wtf/StringExtras.h> + +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, const char* checksum) +{ + 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, checksum); +} + +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 = cairo_image_surface_get_stride(surface); + + MD5 md5Context; + unsigned char* bitmapData = static_cast<unsigned char*>(cairo_image_surface_get_data(surface)); + for (unsigned row = 0; row < pixelsHigh; row++) { + md5Context.addBytes(bitmapData, 4 * pixelsWide); + bitmapData += bytesPerRow; + } + MD5::Digest hash; + md5Context.checksum(hash); + + snprintf(hashString, 33, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", + hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7], + hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15]); +} + +void dumpBitmap(BitmapContext* context, const char* checksum) +{ + cairo_surface_t* surface = cairo_get_target(context->cairoContext()); + printPNG(surface, checksum); +} |