public static void DecompressAlpha(AvifItemData alphaImage,
DecodeInfo decodeInfo,
Surface fullSurface)
{
if (alphaImage is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(alphaImage));
}
if (decodeInfo is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(decodeInfo));
}
if (fullSurface is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(fullSurface));
}
DecoderStatus status = DecoderStatus.Ok;
unsafe
{
alphaImage.UseBufferPointer((ptr, length) =>
{
BitmapData bitmapData = new BitmapData
{
scan0 = fullSurface.Scan0.Pointer,
width = (uint)fullSurface.Width,
height = (uint)fullSurface.Height,
stride = (uint)fullSurface.Stride
};
UIntPtr alphaImageSize = new UIntPtr(length);
if (IntPtr.Size == 8)
{
status = AvifNative_64.DecompressAlphaImage(ptr,
alphaImageSize,
decodeInfo,
ref bitmapData);
}
else
{
status = AvifNative_86.DecompressAlphaImage(ptr,
alphaImageSize,
decodeInfo,
ref bitmapData);
}
});
}
if (status != DecoderStatus.Ok)
{
HandleError(status);
}
}
public static void DecompressColor(AvifItemData colorImage,
CICPColorData?colorConversionInfo,
DecodeInfo decodeInfo,
Surface fullSurface)
{
if (colorImage is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(colorImage));
}
if (decodeInfo is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(decodeInfo));
}
if (fullSurface is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(fullSurface));
}
DecoderStatus status = DecoderStatus.Ok;
unsafe
{
colorImage.UseBufferPointer((ptr, length) =>
{
BitmapData bitmapData = new BitmapData
{
scan0 = fullSurface.Scan0.Pointer,
width = (uint)fullSurface.Width,
height = (uint)fullSurface.Height,
stride = (uint)fullSurface.Stride
};
UIntPtr colorImageSize = new UIntPtr(length);
if (colorConversionInfo.HasValue)
{
CICPColorData colorData = colorConversionInfo.Value;
if (IntPtr.Size == 8)
{
status = AvifNative_64.DecompressColorImage(ptr,
colorImageSize,
ref colorData,
decodeInfo,
ref bitmapData);
}
else
{
status = AvifNative_86.DecompressColorImage(ptr,
colorImageSize,
ref colorData,
decodeInfo,
ref bitmapData);
}
}
else
{
if (IntPtr.Size == 8)
{
status = AvifNative_64.DecompressColorImage(ptr,
colorImageSize,
IntPtr.Zero,
decodeInfo,
ref bitmapData);
}
else
{
status = AvifNative_86.DecompressColorImage(ptr,
colorImageSize,
IntPtr.Zero,
decodeInfo,
ref bitmapData);
}
}
});
}
if (status != DecoderStatus.Ok)
{
HandleError(status);
}
}