/// <summary>
/// Create a <see cref="HeifNclxColorProfile"/> from the specified image handle.
/// </summary>
/// <param name="handle">The handle.</param>
/// <returns>The created profile.</returns>
/// <exception cref="HeifException">
/// A LibHeif error occurred.
/// </exception>
internal static unsafe HeifNclxColorProfile TryCreate(SafeHeifImageHandle handle)
{
HeifNclxColorProfile profile = null;
SafeHeifNclxColorProfile safeNclxProfile = null;
try
{
var error = LibHeifNative.heif_image_handle_get_nclx_color_profile(handle, out safeNclxProfile);
if (error.ErrorCode == heif_error_code.Ok)
{
var nclxProfileV1 = (heif_nclx_color_profile_v1 *)safeNclxProfile.DangerousGetHandle();
profile = new HeifNclxColorProfile(nclxProfileV1->colorPrimaries,
nclxProfileV1->transferCharacteristics,
nclxProfileV1->matrixCoefficients,
nclxProfileV1->fullRange != 0);
}
else
{
if (!LibHeifVersion.Is1Point10OrLater || error.ErrorCode != heif_error_code.Color_profile_does_not_exist)
{
error.ThrowIfError();
}
}
}
finally
{
safeNclxProfile?.Dispose();
}
return(profile);
}
/// <summary>
/// Initializes a new instance of the <see cref="HeifNclxColorProfile"/> class.
/// </summary>
/// <param name="image">The image.</param>
/// <exception cref="HeifException">A LibHeif error occurred.</exception>
internal unsafe HeifNclxColorProfile(SafeHeifImage image) : base(ColorProfileType.Nclx)
{
SafeHeifNclxColorProfile safeNclxProfile = null;
try
{
var error = LibHeifNative.heif_image_get_nclx_color_profile(image, out safeNclxProfile);
error.ThrowIfError();
var nclxProfileV1 = (heif_nclx_color_profile_v1 *)safeNclxProfile.DangerousGetHandle();
this.ColorPrimaries = nclxProfileV1->colorPrimaries;
this.TransferCharacteristics = nclxProfileV1->transferCharacteristics;
this.MatrixCoefficients = nclxProfileV1->matrixCoefficients;
this.FullRange = nclxProfileV1->fullRange != 0;
}
finally
{
safeNclxProfile?.Dispose();
}
}