blob: 1a03b16e5fc10b8efc48fd64ead53d8f663e10dd (
plain)
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
|
/* libs/graphics/sgl/SkMask.cpp
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <limits>
#include "SkMask.h"
size_t SkMask::computeImageSize() const
{
// Prevent too large a number. There is a better fix for this in Skia
// trunk where it returns failure.
long long size = (long long)fBounds.height() * (long long)fRowBytes;
if (size >= std::numeric_limits<size_t>::max() / 2) {
#ifdef WIN32
__debugbreak();
#else
abort();
#endif
}
return size;
}
size_t SkMask::computeTotalImageSize() const
{
size_t size = this->computeImageSize();
if (fFormat == SkMask::k3D_Format) {
// See computeImageSize for why we want to stop here.
if (size > std::numeric_limits<size_t>::max() / 3) {
#ifdef WIN32
__debugbreak();
#else
abort();
#endif
}
size *= 3;
}
return size;
}
/** We explicitly use this allocator for SkBimap pixels, so that we can
freely assign memory allocated by one class to the other.
*/
uint8_t* SkMask::AllocImage(size_t size)
{
return (uint8_t*)sk_malloc_throw(SkAlign4(size));
}
/** We explicitly use this allocator for SkBimap pixels, so that we can
freely assign memory allocated by one class to the other.
*/
void SkMask::FreeImage(void* image)
{
sk_free(image);
}
|
