169 lines
6.4 KiB
C++
169 lines
6.4 KiB
C++
/*
|
|
* Copyright (C) 2008-2021 Apple Inc. All rights reserved.
|
|
* Copyright (C) 2014 Adobe Systems Incorporated. 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 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 "ImageData.h"
|
|
|
|
#include <JavaScriptCore/JSCInlines.h>
|
|
#include <wtf/text/TextStream.h>
|
|
|
|
namespace WebCore {
|
|
|
|
static CheckedUint32 computeDataSize(const IntSize& size)
|
|
{
|
|
CheckedUint32 checkedDataSize = 4;
|
|
checkedDataSize *= static_cast<unsigned>(size.width());
|
|
checkedDataSize *= static_cast<unsigned>(size.height());
|
|
return checkedDataSize;
|
|
}
|
|
|
|
PredefinedColorSpace ImageData::computeColorSpace(std::optional<ImageDataSettings> settings, PredefinedColorSpace defaultColorSpace)
|
|
{
|
|
if (settings && settings->colorSpace)
|
|
return *settings->colorSpace;
|
|
return defaultColorSpace;
|
|
}
|
|
|
|
Ref<ImageData> ImageData::create(PixelBuffer&& pixelBuffer)
|
|
{
|
|
auto colorSpace = toPredefinedColorSpace(pixelBuffer.format().colorSpace);
|
|
return adoptRef(*new ImageData(pixelBuffer.size(), pixelBuffer.takeData(), *colorSpace));
|
|
}
|
|
|
|
RefPtr<ImageData> ImageData::create(std::optional<PixelBuffer>&& pixelBuffer)
|
|
{
|
|
if (!pixelBuffer)
|
|
return nullptr;
|
|
return create(WTFMove(*pixelBuffer));
|
|
}
|
|
|
|
RefPtr<ImageData> ImageData::create(const IntSize& size)
|
|
{
|
|
auto dataSize = computeDataSize(size);
|
|
if (dataSize.hasOverflowed())
|
|
return nullptr;
|
|
auto byteArray = Uint8ClampedArray::tryCreateUninitialized(dataSize);
|
|
if (!byteArray)
|
|
return nullptr;
|
|
return adoptRef(*new ImageData(size, byteArray.releaseNonNull(), PredefinedColorSpace::SRGB));
|
|
}
|
|
|
|
RefPtr<ImageData> ImageData::create(const IntSize& size, Ref<Uint8ClampedArray>&& byteArray, PredefinedColorSpace colorSpace)
|
|
{
|
|
auto dataSize = computeDataSize(size);
|
|
if (dataSize.hasOverflowed() || dataSize != byteArray->length())
|
|
return nullptr;
|
|
|
|
return adoptRef(*new ImageData(size, WTFMove(byteArray), colorSpace));
|
|
}
|
|
|
|
ExceptionOr<Ref<ImageData>> ImageData::createUninitialized(unsigned rows, unsigned pixelsPerRow, PredefinedColorSpace defaultColorSpace, std::optional<ImageDataSettings> settings)
|
|
{
|
|
IntSize size(rows, pixelsPerRow);
|
|
auto dataSize = computeDataSize(size);
|
|
if (dataSize.hasOverflowed())
|
|
return Exception { RangeError, "Cannot allocate a buffer of this size"_s };
|
|
|
|
auto byteArray = Uint8ClampedArray::tryCreateUninitialized(dataSize);
|
|
if (!byteArray) {
|
|
// FIXME: Does this need to be a "real" out of memory error with setOutOfMemoryError called on it?
|
|
return Exception { RangeError, "Out of memory"_s };
|
|
}
|
|
|
|
auto colorSpace = computeColorSpace(settings, defaultColorSpace);
|
|
return adoptRef(*new ImageData(size, byteArray.releaseNonNull(), colorSpace));
|
|
}
|
|
|
|
ExceptionOr<Ref<ImageData>> ImageData::create(unsigned sw, unsigned sh, std::optional<ImageDataSettings> settings)
|
|
{
|
|
if (!sw || !sh)
|
|
return Exception { IndexSizeError };
|
|
|
|
IntSize size(sw, sh);
|
|
auto dataSize = computeDataSize(size);
|
|
if (dataSize.hasOverflowed())
|
|
return Exception { RangeError, "Cannot allocate a buffer of this size"_s };
|
|
|
|
auto byteArray = Uint8ClampedArray::tryCreateUninitialized(dataSize);
|
|
if (!byteArray) {
|
|
// FIXME: Does this need to be a "real" out of memory error with setOutOfMemoryError called on it?
|
|
return Exception { RangeError, "Out of memory"_s };
|
|
}
|
|
byteArray->zeroFill();
|
|
|
|
auto colorSpace = computeColorSpace(settings);
|
|
return adoptRef(*new ImageData(size, byteArray.releaseNonNull(), colorSpace));
|
|
}
|
|
|
|
ExceptionOr<Ref<ImageData>> ImageData::create(Ref<Uint8ClampedArray>&& byteArray, unsigned sw, std::optional<unsigned> sh, std::optional<ImageDataSettings> settings)
|
|
{
|
|
unsigned length = byteArray->length();
|
|
if (!length || length % 4)
|
|
return Exception { InvalidStateError, "Length is not a non-zero multiple of 4"_s };
|
|
|
|
length /= 4;
|
|
if (!sw || length % sw)
|
|
return Exception { IndexSizeError, "Length is not a multiple of sw"_s };
|
|
|
|
unsigned height = length / sw;
|
|
if (sh && sh.value() != height)
|
|
return Exception { IndexSizeError, "sh value is not equal to height"_s };
|
|
|
|
IntSize size(sw, height);
|
|
auto dataSize = computeDataSize(size);
|
|
if (dataSize.hasOverflowed() || dataSize != byteArray->length())
|
|
return Exception { RangeError };
|
|
|
|
auto colorSpace = computeColorSpace(settings);
|
|
return adoptRef(*new ImageData(size, WTFMove(byteArray), colorSpace));
|
|
}
|
|
|
|
ImageData::ImageData(const IntSize& size, Ref<JSC::Uint8ClampedArray>&& data, PredefinedColorSpace colorSpace)
|
|
: m_size(size)
|
|
, m_data(WTFMove(data))
|
|
, m_colorSpace(colorSpace)
|
|
{
|
|
}
|
|
|
|
ImageData::~ImageData() = default;
|
|
|
|
PixelBuffer ImageData::pixelBuffer() const
|
|
{
|
|
PixelBufferFormat format { AlphaPremultiplication::Unpremultiplied, PixelFormat::RGBA8, toDestinationColorSpace(m_colorSpace) };
|
|
return { format, m_size, m_data.get() };
|
|
}
|
|
|
|
TextStream& operator<<(TextStream& ts, const ImageData& imageData)
|
|
{
|
|
// Print out the address of the pixel data array
|
|
return ts << &imageData.data();
|
|
}
|
|
|
|
}
|