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| 1 /* | 1 /* |
| 2 * Copyright (C) 2008 Apple Inc. All rights reserved. | 2 * Copyright (C) 2008 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
| (...skipping 46 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 57 | 57 |
| 58 if (dataSize.unsafeGet() < 0 | 58 if (dataSize.unsafeGet() < 0 |
| 59 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length()) | 59 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length()) |
| 60 return nullptr; | 60 return nullptr; |
| 61 | 61 |
| 62 return new ImageData(size, byteArray); | 62 return new ImageData(size, byteArray); |
| 63 } | 63 } |
| 64 | 64 |
| 65 ImageData* ImageData::create(unsigned width, unsigned height, ExceptionState& ex
ceptionState) | 65 ImageData* ImageData::create(unsigned width, unsigned height, ExceptionState& ex
ceptionState) |
| 66 { | 66 { |
| 67 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) { | |
| 68 exceptionState.throwTypeError("Illegal constructor"); | |
| 69 return nullptr; | |
| 70 } | |
| 71 if (!width || !height) { | 67 if (!width || !height) { |
| 72 exceptionState.throwDOMException(IndexSizeError, String::format("The sou
rce %s is zero or not a number.", width ? "height" : "width")); | 68 exceptionState.throwDOMException(IndexSizeError, String::format("The sou
rce %s is zero or not a number.", width ? "height" : "width")); |
| 73 return nullptr; | 69 return nullptr; |
| 74 } | 70 } |
| 75 | 71 |
| 76 Checked<unsigned, RecordOverflow> dataSize = 4; | 72 Checked<unsigned, RecordOverflow> dataSize = 4; |
| 77 dataSize *= width; | 73 dataSize *= width; |
| 78 dataSize *= height; | 74 dataSize *= height; |
| 79 if (dataSize.hasOverflowed()) { | 75 if (dataSize.hasOverflowed()) { |
| 80 exceptionState.throwDOMException(IndexSizeError, "The requested image si
ze exceeds the supported range."); | 76 exceptionState.throwDOMException(IndexSizeError, "The requested image si
ze exceeds the supported range."); |
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| 104 if (length % width) { | 100 if (length % width) { |
| 105 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not a multiple of (4 * width)."); | 101 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not a multiple of (4 * width)."); |
| 106 return false; | 102 return false; |
| 107 } | 103 } |
| 108 lengthInPixels = length; | 104 lengthInPixels = length; |
| 109 return true; | 105 return true; |
| 110 } | 106 } |
| 111 | 107 |
| 112 ImageData* ImageData::create(DOMUint8ClampedArray* data, unsigned width, Excepti
onState& exceptionState) | 108 ImageData* ImageData::create(DOMUint8ClampedArray* data, unsigned width, Excepti
onState& exceptionState) |
| 113 { | 109 { |
| 114 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) { | |
| 115 exceptionState.throwTypeError("Illegal constructor"); | |
| 116 return nullptr; | |
| 117 } | |
| 118 unsigned lengthInPixels = 0; | 110 unsigned lengthInPixels = 0; |
| 119 if (!validateConstructorArguments(data, width, lengthInPixels, exceptionStat
e)) { | 111 if (!validateConstructorArguments(data, width, lengthInPixels, exceptionStat
e)) { |
| 120 ASSERT(exceptionState.hadException()); | 112 ASSERT(exceptionState.hadException()); |
| 121 return nullptr; | 113 return nullptr; |
| 122 } | 114 } |
| 123 ASSERT(lengthInPixels && width); | 115 ASSERT(lengthInPixels && width); |
| 124 unsigned height = lengthInPixels / width; | 116 unsigned height = lengthInPixels / width; |
| 125 return new ImageData(IntSize(width, height), data); | 117 return new ImageData(IntSize(width, height), data); |
| 126 } | 118 } |
| 127 | 119 |
| 128 ImageData* ImageData::create(DOMUint8ClampedArray* data, unsigned width, unsigne
d height, ExceptionState& exceptionState) | 120 ImageData* ImageData::create(DOMUint8ClampedArray* data, unsigned width, unsigne
d height, ExceptionState& exceptionState) |
| 129 { | 121 { |
| 130 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) { | |
| 131 exceptionState.throwTypeError("Illegal constructor"); | |
| 132 return nullptr; | |
| 133 } | |
| 134 unsigned lengthInPixels = 0; | 122 unsigned lengthInPixels = 0; |
| 135 if (!validateConstructorArguments(data, width, lengthInPixels, exceptionStat
e)) { | 123 if (!validateConstructorArguments(data, width, lengthInPixels, exceptionStat
e)) { |
| 136 ASSERT(exceptionState.hadException()); | 124 ASSERT(exceptionState.hadException()); |
| 137 return nullptr; | 125 return nullptr; |
| 138 } | 126 } |
| 139 ASSERT(lengthInPixels && width); | 127 ASSERT(lengthInPixels && width); |
| 140 if (height != lengthInPixels / width) { | 128 if (height != lengthInPixels / width) { |
| 141 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not equal to (4 * width * height)."); | 129 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not equal to (4 * width * height)."); |
| 142 return nullptr; | 130 return nullptr; |
| 143 } | 131 } |
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| 171 { | 159 { |
| 172 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h
eight() * 4) <= m_data->length()); | 160 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h
eight() * 4) <= m_data->length()); |
| 173 } | 161 } |
| 174 | 162 |
| 175 void ImageData::dispose() | 163 void ImageData::dispose() |
| 176 { | 164 { |
| 177 m_data.clear(); | 165 m_data.clear(); |
| 178 } | 166 } |
| 179 | 167 |
| 180 } // namespace blink | 168 } // namespace blink |
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