internal static void GmicImageListAdd(SafeGmicImageList list,
uint width,
uint height,
GmicPixelFormat format,
string name,
out GmicImageListPixelData pixelData,
out NativeImageFormat nativeImageFormat)
{
ValidateGmicImageList(list);
pixelData = new GmicImageListPixelData();
nativeImageFormat = ConvertToNativeImageFormat(format);
GmicStatus status = GmicNativeMethods.Instance.GmicImageListAdd(list,
width,
height,
nativeImageFormat,
string.IsNullOrWhiteSpace(name) ? null : name,
pixelData);
if (status != GmicStatus.Ok)
{
HandleError(status);
}
}
internal static void GmicImageListGetImageData(SafeGmicImageList list, uint index, out GmicImageListImageData data)
{
ValidateGmicImageList(list);
data = new GmicImageListImageData();
GmicStatus status = GmicNativeMethods.Instance.GmicImageListGetImageData(list, index, data);
if (status != GmicStatus.Ok)
{
HandleError(status);
}
}
internal static void RunGmic(SafeGmicImageList list, GmicOptions options)
{
if (options is null)
{
ExceptionUtil.ThrowArgumentNullException(nameof(options));
}
ValidateGmicImageList(list);
GmicErrorInfo errorInfo = new GmicErrorInfo();
GmicStatus status = GmicNativeMethods.Instance.RunGmic(list, options, errorInfo);
if (status != GmicStatus.Ok)
{
HandleError(status, errorInfo);
}
}
private static void HandleError(GmicStatus status, GmicErrorInfo errorInfo)
{
switch (status)
{
case GmicStatus.Ok:
break;
case GmicStatus.InvalidParameter:
throw new GmicException("An invalid parameter was passed to a native function.");
case GmicStatus.OutOfMemory:
throw new OutOfMemoryException();
case GmicStatus.UnknownImageFormat:
throw new GmicException("The image uses an unknown format.");
case GmicStatus.GmicError:
if (errorInfo != null && TryGetMessageFromErrorInfo(errorInfo, out string message))
{
string command = GetStringFromByteArray(errorInfo.commandName);
throw new GmicException(message, command);
}
else
{
throw new GmicException("An unspecified error occurred when executing G'MIC.");
}
case GmicStatus.GmicResourcePathInitFailed:
break;
case GmicStatus.GmicUnsupportedChannelCount:
throw new GmicException("The output G'MIC image has an unsupported number of channels.");
case GmicStatus.ImageListIndexOutOfRange:
throw new GmicException("The image list index is not valid.");
case GmicStatus.UnknownError:
default:
throw new GmicException("An unspecified error occurred.");
}
}
private static void HandleError(GmicStatus status)
{
HandleError(status, null);
}
