/// <summary>
/// Create a <see cref="HeifIccColorProfile"/> from the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <returns>The created profile.</returns>
/// <exception cref="HeifException">
/// A LibHeif error occurred.
///
/// -or-
///
/// The ICC profile is larger than 2 GB.
/// </exception>
internal static unsafe HeifIccColorProfile TryCreate(SafeHeifImage image)
{
HeifIccColorProfile profile = null;
ulong iccProfileSize = LibHeifNative.heif_image_get_raw_color_profile_size(image).ToUInt64();
if (iccProfileSize > 0)
{
if (iccProfileSize > int.MaxValue)
{
ExceptionUtil.ThrowHeifException(Resources.IccProfileLargerThan2Gb);
}
byte[] iccProfileBytes = new byte[iccProfileSize];
fixed(byte *ptr = iccProfileBytes)
{
var error = LibHeifNative.heif_image_get_raw_color_profile(image, ptr);
error.ThrowIfError();
}
profile = new HeifIccColorProfile(iccProfileBytes, copyToNewArray: false);
}
return(profile);
}
/// <summary>
/// Initializes a new instance of the <see cref="HeifIccColorProfile"/> class.
/// </summary>
/// <param name="image">The image.</param>
/// <exception cref="HeifException">
/// A LibHeif error occurred.
///
/// -or-
///
/// The ICC profile is zero bytes.
///
/// -or-
///
/// The ICC profile is larger than 2 GB.
/// </exception>
internal unsafe HeifIccColorProfile(SafeHeifImage image) : base(ColorProfileType.Icc)
{
ulong iccProfileSize = LibHeifNative.heif_image_get_raw_color_profile_size(image).ToUInt64();
if (iccProfileSize == 0)
{
ExceptionUtil.ThrowHeifException(Resources.IccProfileZeroBytes);
}
else if (iccProfileSize > int.MaxValue)
{
ExceptionUtil.ThrowHeifException(Resources.IccProfileLargerThan2Gb);
}
this.iccProfileBytes = new byte[iccProfileSize];
fixed(byte *ptr = this.iccProfileBytes)
{
var error = LibHeifNative.heif_image_get_raw_color_profile(image, ptr);
error.ThrowIfError();
}
}
