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/*
* Copyright (C) 2008-2023 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/GenericTypedArrayViewInlines.h>
#include <JavaScriptCore/JSCInlines.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
static CheckedUint32 computeDataSize(const IntSize& size, ImageDataStorageFormat storageFormat)
{
return PixelBuffer::computePixelComponentCount(toPixelFormat(storageFormat), size);
}
PredefinedColorSpace ImageData::computeColorSpace(std::optional<ImageDataSettings> settings, PredefinedColorSpace defaultColorSpace)
{
if (settings && settings->colorSpace)
return *settings->colorSpace;
return defaultColorSpace;
}
static ImageDataStorageFormat computeStorageFormat(std::optional<ImageDataSettings> settings, ImageDataStorageFormat defaultStorageFormat = ImageDataStorageFormat::Uint8)
{
return settings ? settings->storageFormat : defaultStorageFormat;
}
Ref<ImageData> ImageData::create(Ref<ByteArrayPixelBuffer>&& pixelBuffer, std::optional<ImageDataStorageFormat> overridingStorageFormat)
{
auto colorSpace = toPredefinedColorSpace(pixelBuffer->format().colorSpace);
return adoptRef(*new ImageData(pixelBuffer->size(), pixelBuffer->takeData(), *colorSpace, overridingStorageFormat));
}
RefPtr<ImageData> ImageData::create(RefPtr<ByteArrayPixelBuffer>&& pixelBuffer, std::optional<ImageDataStorageFormat> overridingStorageFormat)
{
if (!pixelBuffer)
return nullptr;
return create(pixelBuffer.releaseNonNull(), overridingStorageFormat);
}
RefPtr<ImageData> ImageData::create(const IntSize& size, PredefinedColorSpace colorSpace, ImageDataStorageFormat imageDataStorageFormat)
{
auto dataSize = computeDataSize(size, ImageDataStorageFormat::Uint8);
if (dataSize.hasOverflowed())
return nullptr;
auto array = ImageDataArray::tryCreate(dataSize, ImageDataStorageFormat::Uint8);
if (!array)
return nullptr;
return adoptRef(*new ImageData(size, WTFMove(*array), colorSpace, imageDataStorageFormat));
}
RefPtr<ImageData> ImageData::create(const IntSize& size, ImageDataArray&& array, PredefinedColorSpace colorSpace)
{
auto dataSize = computeDataSize(size, array.storageFormat());
if (dataSize.hasOverflowed() || dataSize != array.length())
return nullptr;
return adoptRef(*new ImageData(size, WTFMove(array), colorSpace));
}
ExceptionOr<Ref<ImageData>> ImageData::create(unsigned sw, unsigned sh, PredefinedColorSpace defaultColorSpace, std::optional<ImageDataSettings> settings, std::span<const uint8_t> optionalBytes)
{
if (!sw || !sh)
return Exception { ExceptionCode::IndexSizeError };
IntSize size(sw, sh);
auto storageFormat = computeStorageFormat(settings);
auto dataSize = computeDataSize(size, storageFormat);
if (dataSize.hasOverflowed())
return Exception { ExceptionCode::RangeError, "Cannot allocate a buffer of this size"_s };
auto array = ImageDataArray::tryCreate(dataSize, storageFormat, optionalBytes);
if (!array) {
// FIXME: Does this need to be a "real" out of memory error with setOutOfMemoryError called on it?
return Exception { ExceptionCode::RangeError, "Out of memory"_s };
}
auto colorSpace = ImageData::computeColorSpace(settings, defaultColorSpace);
return adoptRef(*new ImageData(size, WTFMove(*array), colorSpace));
}
ExceptionOr<Ref<ImageData>> ImageData::create(unsigned sw, unsigned sh, std::optional<ImageDataSettings> settings)
{
return create(sw, sh, PredefinedColorSpace::SRGB, settings);
}
ExceptionOr<Ref<ImageData>> ImageData::create(ImageDataArray&& array, unsigned sw, std::optional<unsigned> sh, std::optional<ImageDataSettings> settings)
{
auto length = array.length();
if (!length || length % 4)
return Exception { ExceptionCode::InvalidStateError, "Length is not a non-zero multiple of 4"_s };
auto pixels = length / 4;
if (!sw || pixels % sw)
return Exception { ExceptionCode::IndexSizeError, "Length is not a multiple of sw"_s };
Checked<int, RecordOverflow> height = pixels / sw;
if (height.hasOverflowed())
return Exception { ExceptionCode::IndexSizeError, "Computed height is too big"_s };
if (sh && sh.value() != height)
return Exception { ExceptionCode::IndexSizeError, "sh value is not equal to height"_s };
IntSize size(sw, height.value());
auto dataSize = computeDataSize(size, computeStorageFormat(settings));
if (dataSize.hasOverflowed() || dataSize != length)
return Exception { ExceptionCode::RangeError };
auto colorSpace = computeColorSpace(settings);
return adoptRef(*new ImageData(size, WTFMove(array), colorSpace));
}
ImageData::ImageData(const IntSize& size, ImageDataArray&& data, PredefinedColorSpace colorSpace)
: m_size(size)
, m_data(WTFMove(data))
, m_colorSpace(colorSpace)
{
}
ImageData::ImageData(const IntSize& size, ImageDataArray&& data, PredefinedColorSpace colorSpace, std::optional<ImageDataStorageFormat> overridingStorageFormat)
: m_size(size)
, m_data(WTFMove(data), overridingStorageFormat)
, m_colorSpace(colorSpace)
{
}
ImageData::~ImageData() = default;
Ref<ByteArrayPixelBuffer> ImageData::pixelBuffer() const
{
Ref uint8Data = m_data.asUint8ClampedArray();
PixelBufferFormat format { AlphaPremultiplication::Unpremultiplied, PixelFormat::RGBA8, toDestinationColorSpace(m_colorSpace) };
return ByteArrayPixelBuffer::create(format, m_size, uint8Data.get());
}
TextStream& operator<<(TextStream& ts, const ImageData& imageData)
{
// Print out the address of the pixel data array
return ts << &imageData.data();
}
}
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