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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/html/Float32ImageData.h"
#include "bindings/core/v8/ExceptionState.h"
#include "bindings/core/v8/V8Float32Array.h"
#include "core/dom/ExceptionCode.h"
#include "core/frame/ImageBitmap.h"
#include "core/imagebitmap/ImageBitmapOptions.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "wtf/CheckedNumeric.h"
namespace blink {
bool Float32ImageData::validateConstructorArguments(
const unsigned& paramFlags,
const IntSize* size,
const unsigned& width,
const unsigned& height,
const DOMFloat32Array* data,
const String* colorSpace,
ExceptionState* exceptionState) {
return ImageData::validateConstructorArguments(
paramFlags, size, width, height, data, colorSpace, exceptionState,
kFloat32ImageData);
}
DOMFloat32Array* Float32ImageData::allocateAndValidateFloat32Array(
const unsigned& length,
ExceptionState* exceptionState) {
if (!length)
return nullptr;
DOMFloat32Array* dataArray = DOMFloat32Array::createOrNull(length);
if (!dataArray || length != dataArray->length()) {
if (exceptionState) {
exceptionState->throwDOMException(
V8RangeError, "Out of memory at Float32ImageData creation");
}
return nullptr;
}
return dataArray;
}
Float32ImageData* Float32ImageData::create(const IntSize& size) {
if (!Float32ImageData::validateConstructorArguments(kParamSize, &size))
return nullptr;
DOMFloat32Array* dataArray =
Float32ImageData::allocateAndValidateFloat32Array(4 * size.width() *
size.height());
return dataArray ? new Float32ImageData(size, dataArray) : nullptr;
}
Float32ImageData* Float32ImageData::create(const IntSize& size,
DOMFloat32Array* dataArray) {
if (!Float32ImageData::validateConstructorArguments(kParamSize | kParamData,
&size, 0, 0, dataArray))
return nullptr;
return new Float32ImageData(size, dataArray);
}
Float32ImageData* Float32ImageData::create(unsigned width,
unsigned height,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(
kParamWidth | kParamHeight, nullptr, width, height, nullptr, nullptr,
&exceptionState))
return nullptr;
DOMFloat32Array* dataArray =
Float32ImageData::allocateAndValidateFloat32Array(4 * width * height,
&exceptionState);
return dataArray ? new Float32ImageData(IntSize(width, height), dataArray)
: nullptr;
}
Float32ImageData* Float32ImageData::create(DOMFloat32Array* data,
unsigned width,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(kParamData | kParamWidth,
nullptr, width, 0, data,
nullptr, &exceptionState))
return nullptr;
unsigned height = data->length() / (width * 4);
return new Float32ImageData(IntSize(width, height), data);
}
Float32ImageData* Float32ImageData::create(DOMFloat32Array* data,
unsigned width,
unsigned height,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(
kParamData | kParamWidth | kParamHeight, nullptr, width, height, data,
nullptr, &exceptionState))
return nullptr;
return new Float32ImageData(IntSize(width, height), data);
}
Float32ImageData* Float32ImageData::create(unsigned width,
unsigned height,
String colorSpace,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(
kParamWidth | kParamHeight | kParamColorSpace, nullptr, width, height,
nullptr, &colorSpace, &exceptionState))
return nullptr;
DOMFloat32Array* dataArray =
Float32ImageData::allocateAndValidateFloat32Array(4 * width * height,
&exceptionState);
return dataArray ? new Float32ImageData(IntSize(width, height), dataArray,
colorSpace)
: nullptr;
}
Float32ImageData* Float32ImageData::create(DOMFloat32Array* data,
unsigned width,
String colorSpace,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(
kParamData | kParamWidth | kParamColorSpace, nullptr, width, 0, data,
&colorSpace, &exceptionState))
return nullptr;
unsigned height = data->length() / (width * 4);
return new Float32ImageData(IntSize(width, height), data, colorSpace);
}
Float32ImageData* Float32ImageData::create(DOMFloat32Array* data,
unsigned width,
unsigned height,
String colorSpace,
ExceptionState& exceptionState) {
if (!Float32ImageData::validateConstructorArguments(
kParamData | kParamWidth | kParamHeight | kParamColorSpace, nullptr,
width, height, data, &colorSpace, &exceptionState))
return nullptr;
return new Float32ImageData(IntSize(width, height), data, colorSpace);
}
v8::Local<v8::Object> Float32ImageData::associateWithWrapper(
v8::Isolate* isolate,
const WrapperTypeInfo* wrapperType,
v8::Local<v8::Object> wrapper) {
wrapper =
ScriptWrappable::associateWithWrapper(isolate, wrapperType, wrapper);
if (!wrapper.IsEmpty() && m_data.get()) {
// Create a V8 Float32Array object and set the "data" property
// of the Float32ImageData object to the created v8 object, eliminating the
// C++ callback when accessing the "data" property.
v8::Local<v8::Value> pixelArray = ToV8(m_data.get(), wrapper, isolate);
if (pixelArray.IsEmpty() ||
!v8CallBoolean(wrapper->DefineOwnProperty(
isolate->GetCurrentContext(), v8AtomicString(isolate, "data"),
pixelArray, v8::ReadOnly)))
return v8::Local<v8::Object>();
}
return wrapper;
}
Float32ImageData::Float32ImageData(const IntSize& size,
DOMFloat32Array* dataArray,
String colorSpaceName)
: m_size(size),
m_colorSpace(ImageData::getImageDataColorSpace(colorSpaceName)),
m_data(dataArray) {
DCHECK_GE(size.width(), 0);
DCHECK_GE(size.height(), 0);
SECURITY_CHECK(static_cast<unsigned>(size.width() * size.height() * 4) <=
m_data->length());
}
} // namespace blink
|
