1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
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 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/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;
}
Vector<uint8_t, 16> 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);
}
|
