| /* |
| * Copyright (C) 2008 Apple Inc. All rights reserved. |
| * |
| * 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 "third_party/blink/renderer/core/html/canvas/image_data.h" |
| |
| #include "base/sys_byteorder.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_image_bitmap_options.h" |
| #include "third_party/blink/renderer/bindings/core/v8/v8_uint8_clamped_array.h" |
| #include "third_party/blink/renderer/core/dom/dom_exception.h" |
| #include "third_party/blink/renderer/core/imagebitmap/image_bitmap.h" |
| #include "third_party/blink/renderer/platform/graphics/color_behavior.h" |
| #include "v8/include/v8.h" |
| |
| namespace blink { |
| |
| // Please note that all the number "4" in the file means number of channels |
| // required to describe a pixel, namely, red, green, blue and alpha. |
| namespace { |
| |
| bool RaiseDOMExceptionAndReturnFalse(ExceptionState* exception_state, |
| DOMExceptionCode exception_code, |
| const char* message) { |
| if (exception_state) |
| exception_state->ThrowDOMException(exception_code, message); |
| return false; |
| } |
| |
| } // namespace |
| |
| bool ImageData::ValidateConstructorArguments( |
| const IntSize* size, |
| const unsigned* width, |
| const unsigned* height, |
| const NotShared<DOMArrayBufferView>* data, |
| const ImageDataSettings* settings, |
| ExceptionState* exception_state) { |
| // We accept all the combinations of colorSpace and storageFormat in an |
| // ImageDataSettings to be stored in an ImageData. Therefore, we don't |
| // check the color settings in this function. |
| |
| if (width && !*width) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kIndexSizeError, |
| "The source width is zero or not a number."); |
| } |
| |
| if (height && !*height) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kIndexSizeError, |
| "The source height is zero or not a number."); |
| } |
| |
| if (width || height) { |
| base::CheckedNumeric<unsigned> data_size = |
| StorageFormatBytesPerPixel(kUint8ClampedArrayStorageFormatName); |
| if (settings) { |
| data_size = StorageFormatBytesPerPixel(settings->storageFormat()); |
| } |
| data_size *= width ? *width : 0; |
| data_size *= height ? *height : 0; |
| if (!data_size.IsValid()) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kIndexSizeError, |
| "The requested image size exceeds the supported range."); |
| } |
| |
| if (data_size.ValueOrDie() > v8::TypedArray::kMaxLength) { |
| if (exception_state) { |
| exception_state->ThrowRangeError( |
| "Out of memory at ImageData creation."); |
| } |
| return false; |
| } |
| } |
| |
| unsigned data_length = 0; |
| if (data) { |
| DCHECK(data); |
| if ((*data)->GetType() != DOMArrayBufferView::ViewType::kTypeUint8Clamped && |
| (*data)->GetType() != DOMArrayBufferView::ViewType::kTypeUint16 && |
| (*data)->GetType() != DOMArrayBufferView::ViewType::kTypeFloat32) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kNotSupportedError, |
| "The input data type is not supported."); |
| } |
| |
| static_assert( |
| std::numeric_limits<unsigned>::max() >= |
| std::numeric_limits<uint32_t>::max(), |
| "We use UINT32_MAX as the upper bound of the input size and expect " |
| "that the result fits into an `unsigned`."); |
| if (!base::CheckedNumeric<uint32_t>((*data)->byteLength()) |
| .AssignIfValid(&data_length)) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kNotSupportedError, |
| "The input data is too large. The maximum size is 4294967295."); |
| } |
| if (!data_length) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kInvalidStateError, |
| "The input data has zero elements."); |
| } |
| data_length /= (*data)->TypeSize(); |
| if (data_length % 4) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kInvalidStateError, |
| "The input data length is not a multiple of 4."); |
| } |
| |
| if (width && (data_length / 4) % *width) { |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kIndexSizeError, |
| "The input data length is not a multiple of (4 * width)."); |
| } |
| |
| if (width && height && *height != data_length / (4 * *width)) |
| return RaiseDOMExceptionAndReturnFalse( |
| exception_state, DOMExceptionCode::kIndexSizeError, |
| "The input data length is not equal to (4 * width * height)."); |
| } |
| |
| if (size) { |
| if (size->Width() <= 0 || size->Height() <= 0) |
| return false; |
| base::CheckedNumeric<unsigned> data_size = 4; |
| data_size *= size->Width(); |
| data_size *= size->Height(); |
| if (!data_size.IsValid() || |
| data_size.ValueOrDie() > v8::TypedArray::kMaxLength) |
| return false; |
| if (data) { |
| if (data_size.ValueOrDie() > data_length) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| NotShared<DOMArrayBufferView> ImageData::AllocateAndValidateDataArray( |
| const unsigned& length, |
| ImageDataStorageFormat storage_format, |
| ExceptionState* exception_state) { |
| if (!length) |
| return NotShared<DOMArrayBufferView>(); |
| |
| NotShared<DOMArrayBufferView> data_array; |
| switch (storage_format) { |
| case kUint8ClampedArrayStorageFormat: |
| data_array = NotShared<DOMArrayBufferView>( |
| DOMUint8ClampedArray::CreateOrNull(length)); |
| break; |
| case kUint16ArrayStorageFormat: |
| data_array = |
| NotShared<DOMArrayBufferView>(DOMUint16Array::CreateOrNull(length)); |
| break; |
| case kFloat32ArrayStorageFormat: |
| data_array = |
| NotShared<DOMArrayBufferView>(DOMFloat32Array::CreateOrNull(length)); |
| break; |
| default: |
| NOTREACHED(); |
| } |
| |
| size_t expected_size; |
| if (!data_array || (!base::CheckMul(length, data_array->TypeSize()) |
| .AssignIfValid(&expected_size) && |
| expected_size != data_array->byteLength())) { |
| if (exception_state) |
| exception_state->ThrowRangeError("Out of memory at ImageData creation"); |
| return NotShared<DOMArrayBufferView>(); |
| } |
| |
| return data_array; |
| } |
| |
| ImageData* ImageData::Create(const IntSize& size, |
| const ImageDataSettings* settings) { |
| if (!ValidateConstructorArguments(&size, nullptr, nullptr, nullptr, settings)) |
| return nullptr; |
| ImageDataStorageFormat storage_format = kUint8ClampedArrayStorageFormat; |
| if (settings) { |
| storage_format = |
| ImageData::GetImageDataStorageFormat(settings->storageFormat()); |
| } |
| NotShared<DOMArrayBufferView> data_array = |
| AllocateAndValidateDataArray(4 * static_cast<unsigned>(size.Width()) * |
| static_cast<unsigned>(size.Height()), |
| storage_format); |
| return data_array |
| ? MakeGarbageCollected<ImageData>(size, data_array, settings) |
| : nullptr; |
| } |
| |
| ImageData* ImageData::Create(const IntSize& size, |
| CanvasColorSpace color_space, |
| ImageDataStorageFormat storage_format) { |
| ImageDataSettings* settings = ImageDataSettings::Create(); |
| switch (color_space) { |
| case CanvasColorSpace::kSRGB: |
| settings->setColorSpace(kSRGBCanvasColorSpaceName); |
| break; |
| case CanvasColorSpace::kRec2020: |
| settings->setColorSpace(kRec2020CanvasColorSpaceName); |
| break; |
| case CanvasColorSpace::kP3: |
| settings->setColorSpace(kP3CanvasColorSpaceName); |
| break; |
| } |
| |
| switch (storage_format) { |
| case kUint8ClampedArrayStorageFormat: |
| settings->setStorageFormat(kUint8ClampedArrayStorageFormatName); |
| break; |
| case kUint16ArrayStorageFormat: |
| settings->setStorageFormat(kUint16ArrayStorageFormatName); |
| break; |
| case kFloat32ArrayStorageFormat: |
| settings->setStorageFormat(kFloat32ArrayStorageFormatName); |
| break; |
| } |
| |
| return ImageData::Create(size, settings); |
| } |
| |
| ImageData* ImageData::Create(const IntSize& size, |
| NotShared<DOMArrayBufferView> data_array, |
| const ImageDataSettings* settings) { |
| NotShared<DOMArrayBufferView> buffer_view = data_array; |
| if (!ValidateConstructorArguments(&size, nullptr, nullptr, &buffer_view, |
| settings)) |
| return nullptr; |
| return MakeGarbageCollected<ImageData>(size, data_array, settings); |
| } |
| |
| ImageData* ImageData::Create(unsigned width, |
| unsigned height, |
| ExceptionState& exception_state) { |
| if (!ValidateConstructorArguments(nullptr, &width, &height, nullptr, nullptr, |
| &exception_state)) |
| return nullptr; |
| |
| NotShared<DOMArrayBufferView> byte_array = AllocateAndValidateDataArray( |
| 4 * width * height, kUint8ClampedArrayStorageFormat, &exception_state); |
| return byte_array ? MakeGarbageCollected<ImageData>(IntSize(width, height), |
| byte_array) |
| : nullptr; |
| } |
| |
| ImageData* ImageData::Create(NotShared<DOMUint8ClampedArray> data, |
| unsigned width, |
| ExceptionState& exception_state) { |
| NotShared<DOMArrayBufferView> buffer_view = data; |
| if (!ValidateConstructorArguments(nullptr, &width, nullptr, &buffer_view, |
| nullptr, &exception_state)) |
| return nullptr; |
| |
| unsigned height = base::checked_cast<unsigned>(data->length()) / (width * 4); |
| return MakeGarbageCollected<ImageData>(IntSize(width, height), data); |
| } |
| |
| ImageData* ImageData::Create(NotShared<DOMUint8ClampedArray> data, |
| unsigned width, |
| unsigned height, |
| ExceptionState& exception_state) { |
| NotShared<DOMArrayBufferView> buffer_view = data; |
| if (!ValidateConstructorArguments(nullptr, &width, &height, &buffer_view, |
| nullptr, &exception_state)) |
| return nullptr; |
| |
| return MakeGarbageCollected<ImageData>(IntSize(width, height), data); |
| } |
| |
| ImageData* ImageData::CreateImageData(unsigned width, |
| unsigned height, |
| const ImageDataSettings* settings, |
| ExceptionState& exception_state) { |
| if (!ValidateConstructorArguments(nullptr, &width, &height, nullptr, settings, |
| &exception_state)) |
| return nullptr; |
| |
| ImageDataStorageFormat storage_format = |
| GetImageDataStorageFormat(settings->storageFormat()); |
| NotShared<DOMArrayBufferView> buffer_view = AllocateAndValidateDataArray( |
| 4 * width * height, storage_format, &exception_state); |
| |
| if (!buffer_view) |
| return nullptr; |
| |
| return MakeGarbageCollected<ImageData>(IntSize(width, height), buffer_view, |
| settings); |
| } |
| |
| ImageData* ImageData::CreateImageData(ImageDataArray& data, |
| unsigned width, |
| unsigned height, |
| ImageDataSettings* settings, |
| ExceptionState& exception_state) { |
| NotShared<DOMArrayBufferView> buffer_view; |
| |
| // When pixels data is provided, we need to override the storage format of |
| // ImageDataSettings with the one that matches the data type of the |
| // pixels. |
| String storage_format_name; |
| |
| if (data.IsUint8ClampedArray()) { |
| buffer_view = data.GetAsUint8ClampedArray(); |
| storage_format_name = kUint8ClampedArrayStorageFormatName; |
| } else if (data.IsUint16Array()) { |
| buffer_view = data.GetAsUint16Array(); |
| storage_format_name = kUint16ArrayStorageFormatName; |
| } else if (data.IsFloat32Array()) { |
| buffer_view = data.GetAsFloat32Array(); |
| storage_format_name = kFloat32ArrayStorageFormatName; |
| } else { |
| NOTREACHED(); |
| } |
| |
| if (settings->storageFormat() != storage_format_name) |
| settings->setStorageFormat(storage_format_name); |
| |
| if (!ValidateConstructorArguments(nullptr, &width, &height, &buffer_view, |
| settings, &exception_state)) |
| return nullptr; |
| |
| return MakeGarbageCollected<ImageData>(IntSize(width, height), buffer_view, |
| settings); |
| } |
| |
| // This function accepts size (0, 0) and always returns the ImageData in |
| // "srgb" color space and "uint8" storage format. |
| ImageData* ImageData::CreateForTest(const IntSize& size) { |
| base::CheckedNumeric<unsigned> data_size = |
| StorageFormatBytesPerPixel(kUint8ClampedArrayStorageFormat); |
| data_size *= size.Width(); |
| data_size *= size.Height(); |
| if (!data_size.IsValid() || |
| data_size.ValueOrDie() > v8::TypedArray::kMaxLength) |
| return nullptr; |
| |
| NotShared<DOMUint8ClampedArray> byte_array( |
| DOMUint8ClampedArray::CreateOrNull(data_size.ValueOrDie())); |
| if (!byte_array) |
| return nullptr; |
| |
| return MakeGarbageCollected<ImageData>(size, byte_array); |
| } |
| |
| // This function is called from unit tests, and all the parameters are supposed |
| // to be validated on the call site. |
| ImageData* ImageData::CreateForTest(const IntSize& size, |
| NotShared<DOMArrayBufferView> buffer_view, |
| const ImageDataSettings* settings) { |
| return MakeGarbageCollected<ImageData>(size, buffer_view, settings); |
| } |
| |
| // Crops ImageData to the intersect of its size and the given rectangle. If the |
| // intersection is empty or it cannot create the cropped ImageData it returns |
| // nullptr. This function leaves the source ImageData intact. When crop_rect |
| // covers all the ImageData, a copy of the ImageData is returned. |
| // TODO (zakerinasab): crbug.com/774484: As a rule of thumb ImageData belongs to |
| // the user and its state should not change unless directly modified by the |
| // user. Therefore, we should be able to remove the extra copy and return a |
| // "cropped view" on the source ImageData object. |
| ImageData* ImageData::CropRect(const IntRect& crop_rect, bool flip_y) { |
| IntRect src_rect(IntPoint(), size_); |
| const IntRect dst_rect = Intersection(src_rect, crop_rect); |
| if (dst_rect.IsEmpty()) |
| return nullptr; |
| |
| unsigned data_size = 4 * dst_rect.Width() * dst_rect.Height(); |
| NotShared<DOMArrayBufferView> buffer_view = AllocateAndValidateDataArray( |
| data_size, GetImageDataStorageFormat(settings_->storageFormat())); |
| if (!buffer_view) |
| return nullptr; |
| |
| if (src_rect == dst_rect && !flip_y) { |
| std::memcpy(buffer_view->BufferBase()->Data(), BufferBase()->Data(), |
| data_size * buffer_view->TypeSize()); |
| } else { |
| unsigned data_type_size = |
| StorageFormatBytesPerPixel(settings_->storageFormat()); |
| int src_index = (dst_rect.X() + dst_rect.Y() * src_rect.Width()) * 4; |
| int dst_index = 0; |
| if (flip_y) |
| dst_index = (dst_rect.Height() - 1) * dst_rect.Width() * 4; |
| int src_row_stride = src_rect.Width() * 4; |
| int dst_row_stride = flip_y ? -dst_rect.Width() * 4 : dst_rect.Width() * 4; |
| for (int i = 0; i < dst_rect.Height(); i++) { |
| std::memcpy(static_cast<char*>(buffer_view->BufferBase()->Data()) + |
| dst_index / 4 * data_type_size, |
| static_cast<char*>(BufferBase()->Data()) + |
| src_index / 4 * data_type_size, |
| dst_rect.Width() * data_type_size); |
| src_index += src_row_stride; |
| dst_index += dst_row_stride; |
| } |
| } |
| return MakeGarbageCollected<ImageData>(dst_rect.Size(), buffer_view, |
| settings_); |
| } |
| |
| ScriptPromise ImageData::CreateImageBitmap(ScriptState* script_state, |
| base::Optional<IntRect> crop_rect, |
| const ImageBitmapOptions* options, |
| ExceptionState& exception_state) { |
| if (BufferBase()->IsDetached()) { |
| exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError, |
| "The source data has been detached."); |
| return ScriptPromise(); |
| } |
| return ImageBitmapSource::FulfillImageBitmap( |
| script_state, MakeGarbageCollected<ImageBitmap>(this, crop_rect, options), |
| exception_state); |
| } |
| |
| v8::Local<v8::Object> ImageData::AssociateWithWrapper( |
| v8::Isolate* isolate, |
| const WrapperTypeInfo* wrapper_type, |
| v8::Local<v8::Object> wrapper) { |
| wrapper = |
| ScriptWrappable::AssociateWithWrapper(isolate, wrapper_type, wrapper); |
| |
| if (!wrapper.IsEmpty() && data_.IsUint8ClampedArray()) { |
| // Create a V8 object with |data_| and set the "data" property |
| // of the ImageData object to the created v8 object, eliminating the |
| // C++ callback when accessing the "data" property. |
| |
| v8::Local<v8::Value> pixel_array = ToV8(data_, wrapper, isolate); |
| bool defined_property; |
| if (pixel_array.IsEmpty() || |
| !wrapper |
| ->DefineOwnProperty(isolate->GetCurrentContext(), |
| V8AtomicString(isolate, "data"), pixel_array, |
| v8::ReadOnly) |
| .To(&defined_property) || |
| !defined_property) |
| return v8::Local<v8::Object>(); |
| } |
| return wrapper; |
| } |
| |
| String ImageData::CanvasColorSpaceName(CanvasColorSpace color_space) { |
| switch (color_space) { |
| case CanvasColorSpace::kSRGB: |
| return kSRGBCanvasColorSpaceName; |
| case CanvasColorSpace::kRec2020: |
| return kRec2020CanvasColorSpaceName; |
| case CanvasColorSpace::kP3: |
| return kP3CanvasColorSpaceName; |
| default: |
| NOTREACHED(); |
| } |
| return kSRGBCanvasColorSpaceName; |
| } |
| |
| ImageDataStorageFormat ImageData::GetImageDataStorageFormat( |
| const String& storage_format_name) { |
| if (storage_format_name == kUint8ClampedArrayStorageFormatName) |
| return kUint8ClampedArrayStorageFormat; |
| if (storage_format_name == kUint16ArrayStorageFormatName) |
| return kUint16ArrayStorageFormat; |
| if (storage_format_name == kFloat32ArrayStorageFormatName) |
| return kFloat32ArrayStorageFormat; |
| NOTREACHED(); |
| return kUint8ClampedArrayStorageFormat; |
| } |
| |
| CanvasColorSpace ImageData::GetCanvasColorSpace() const { |
| if (!RuntimeEnabledFeatures::CanvasColorManagementEnabled()) |
| return CanvasColorSpace::kSRGB; |
| return CanvasColorSpaceFromName(settings_->colorSpace()); |
| } |
| |
| ImageDataStorageFormat ImageData::GetImageDataStorageFormat() const { |
| if (data_u16_) |
| return kUint16ArrayStorageFormat; |
| if (data_f32_) |
| return kFloat32ArrayStorageFormat; |
| return kUint8ClampedArrayStorageFormat; |
| } |
| |
| unsigned ImageData::StorageFormatBytesPerPixel( |
| const String& storage_format_name) { |
| if (storage_format_name == kUint8ClampedArrayStorageFormatName) |
| return 4; |
| if (storage_format_name == kUint16ArrayStorageFormatName) |
| return 8; |
| if (storage_format_name == kFloat32ArrayStorageFormatName) |
| return 16; |
| NOTREACHED(); |
| return 1; |
| } |
| |
| unsigned ImageData::StorageFormatBytesPerPixel( |
| ImageDataStorageFormat storage_format) { |
| switch (storage_format) { |
| case kUint8ClampedArrayStorageFormat: |
| return 4; |
| case kUint16ArrayStorageFormat: |
| return 8; |
| case kFloat32ArrayStorageFormat: |
| return 16; |
| } |
| NOTREACHED(); |
| return 1; |
| } |
| |
| DOMArrayBufferBase* ImageData::BufferBase() const { |
| if (data_.IsUint8ClampedArray()) |
| return data_.GetAsUint8ClampedArray()->BufferBase(); |
| if (data_.IsUint16Array()) |
| return data_.GetAsUint16Array()->BufferBase(); |
| if (data_.IsFloat32Array()) |
| return data_.GetAsFloat32Array()->BufferBase(); |
| return nullptr; |
| } |
| |
| SkPixmap ImageData::GetSkPixmap() const { |
| SkColorType color_type = kRGBA_8888_SkColorType; |
| if (data_u16_) { |
| color_type = kR16G16B16A16_unorm_SkColorType; |
| } else if (data_f32_) { |
| color_type = kRGBA_F32_SkColorType; |
| } |
| SkImageInfo info = |
| SkImageInfo::Make(width(), height(), color_type, kUnpremul_SkAlphaType, |
| CanvasColorSpaceToSkColorSpace(GetCanvasColorSpace())); |
| return SkPixmap(info, BufferBase()->Data(), info.minRowBytes()); |
| } |
| |
| void ImageData::Trace(Visitor* visitor) const { |
| visitor->Trace(settings_); |
| visitor->Trace(data_); |
| visitor->Trace(data_u8_); |
| visitor->Trace(data_u16_); |
| visitor->Trace(data_f32_); |
| ScriptWrappable::Trace(visitor); |
| } |
| |
| ImageData::ImageData(const IntSize& size, |
| NotShared<DOMArrayBufferView> data, |
| const ImageDataSettings* settings) |
| : size_(size), settings_(ImageDataSettings::Create()) { |
| DCHECK_GE(size.Width(), 0); |
| DCHECK_GE(size.Height(), 0); |
| DCHECK(data); |
| |
| data_u8_.Clear(); |
| data_u16_.Clear(); |
| data_f32_.Clear(); |
| |
| if (settings) { |
| settings_->setColorSpace(settings->colorSpace()); |
| settings_->setStorageFormat(settings->storageFormat()); |
| } |
| |
| ImageDataStorageFormat storage_format = |
| GetImageDataStorageFormat(settings_->storageFormat()); |
| switch (storage_format) { |
| case kUint8ClampedArrayStorageFormat: |
| DCHECK(data->GetType() == |
| DOMArrayBufferView::ViewType::kTypeUint8Clamped); |
| data_u8_ = data; |
| DCHECK(data_u8_); |
| data_.SetUint8ClampedArray(data_u8_); |
| SECURITY_CHECK( |
| (base::CheckedNumeric<size_t>(size.Width()) * size.Height() * 4) |
| .ValueOrDie() <= data_.GetAsUint8ClampedArray()->length()); |
| break; |
| |
| case kUint16ArrayStorageFormat: |
| DCHECK(data->GetType() == DOMArrayBufferView::ViewType::kTypeUint16); |
| data_u16_ = data; |
| DCHECK(data_u16_); |
| data_.SetUint16Array(data_u16_); |
| SECURITY_CHECK( |
| (base::CheckedNumeric<size_t>(size.Width()) * size.Height() * 4) |
| .ValueOrDie() <= data_.GetAsUint16Array()->length()); |
| break; |
| |
| case kFloat32ArrayStorageFormat: |
| DCHECK(data->GetType() == DOMArrayBufferView::ViewType::kTypeFloat32); |
| data_f32_ = data; |
| DCHECK(data_f32_); |
| data_.SetFloat32Array(data_f32_); |
| SECURITY_CHECK( |
| (base::CheckedNumeric<size_t>(size.Width()) * size.Height() * 4) |
| .ValueOrDie() <= data_.GetAsFloat32Array()->length()); |
| break; |
| |
| default: |
| NOTREACHED(); |
| } |
| } |
| |
| } // namespace blink |
