/// <summary>
/// Returns the format information. The header of the image in the array of bytes is used to
/// determine the format.
/// </summary>
/// <param name="data">The array of bytes to read the image header from.</param>
/// <returns>The format information.</returns>
public static MagickFormatInfo?Create(byte[] data)
{
Throw.IfNullOrEmpty(nameof(data), data);
var instance = new NativeMagickFormatInfo();
instance.GetInfoWithBlob(data, data.Length);
return(Create(instance));
}
/// <summary>
/// Returns the format information. The header of the image in the span of bytes is used to
/// determine the format.
/// </summary>
/// <param name="data">The span of bytes to read the image header from.</param>
/// <returns>The format information.</returns>
public static MagickFormatInfo?Create(ReadOnlySpan <byte> data)
{
Throw.IfEmpty(nameof(data), data);
var instance = new NativeMagickFormatInfo();
instance.GetInfoWithBlob(data, data.Length);
return(Create(instance));
}
private static Dictionary <MagickFormat, MagickFormatInfo> LoadFormats()
{
var result = new Dictionary <MagickFormat, MagickFormatInfo>();
var list = IntPtr.Zero;
var length = (UIntPtr)0;
var instance = new NativeMagickFormatInfo();
try
{
list = instance.CreateList(out length);
var ptr = list;
MagickFormatInfo formatInfo;
for (int i = 0; i < (int)length; i++)
{
instance.GetInfo(list, i);
formatInfo = Create(instance);
if (formatInfo != null)
{
result[formatInfo.Format] = formatInfo;
}
ptr = new IntPtr(ptr.ToInt64() + i);
}
/* stealth coders */
formatInfo = Create(instance, "DIB");
if (formatInfo != null)
{
result[formatInfo.Format] = formatInfo;
}
formatInfo = Create(instance, "TIF");
if (formatInfo != null)
{
result[formatInfo.Format] = formatInfo;
}
}
finally
{
if (list != IntPtr.Zero)
{
NativeMagickFormatInfo.DisposeList(list, (int)length);
}
}
return(result);
}
private static void AddStealthCoders(NativeMagickFormatInfo instance, Dictionary <MagickFormat, MagickFormatInfo> formats)
{
var formatInfo = Create(instance, "DIB");
if (formatInfo != null)
{
formats[formatInfo.Format] = formatInfo;
}
formatInfo = Create(instance, "TIF");
if (formatInfo != null)
{
formats[formatInfo.Format] = formatInfo;
}
}
private static MagickFormatInfo Create(NativeMagickFormatInfo instance)
{
MagickFormatInfo formatInfo = new MagickFormatInfo();
formatInfo.Format = GetFormat(instance.Format);
formatInfo.Description = instance.Description;
formatInfo.CanReadMultithreaded = instance.CanReadMultithreaded;
formatInfo.CanWriteMultithreaded = instance.CanWriteMultithreaded;
formatInfo.IsMultiFrame = instance.IsMultiFrame;
formatInfo.IsReadable = instance.IsReadable;
formatInfo.IsWritable = instance.IsWritable;
formatInfo.MimeType = instance.MimeType;
formatInfo.Module = GetFormat(instance.Module);
return(formatInfo);
}
private static MagickFormatInfo Create(NativeMagickFormatInfo instance)
{
if (!instance.HasInstance)
{
return(null);
}
return(new MagickFormatInfo
{
Format = GetFormat(instance.Format),
Description = instance.Description,
CanReadMultithreaded = instance.CanReadMultithreaded,
CanWriteMultithreaded = instance.CanWriteMultithreaded,
IsMultiFrame = instance.IsMultiFrame,
IsReadable = instance.IsReadable,
IsWritable = instance.IsWritable,
MimeType = instance.MimeType,
ModuleFormat = GetFormat(instance.Module),
});
}
private static Dictionary <MagickFormat, MagickFormatInfo> LoadFormats()
{
var formats = new Dictionary <MagickFormat, MagickFormatInfo>();
var list = IntPtr.Zero;
var length = (UIntPtr)0;
var instance = new NativeMagickFormatInfo();
try
{
list = instance.CreateList(out length);
var ptr = list;
for (int i = 0; i < (int)length; i++)
{
instance.GetInfo(list, i);
var formatInfo = Create(instance);
if (formatInfo != null)
{
formats[formatInfo.Format] = formatInfo;
}
ptr = new IntPtr(ptr.ToInt64() + i);
}
AddStealthCoders(instance, formats);
}
finally
{
if (list != IntPtr.Zero)
{
NativeMagickFormatInfo.DisposeList(list, (int)length);
}
}
return(formats);
}
private static MagickFormatInfo Create(NativeMagickFormatInfo instance, string name)
{
instance.GetInfoByName(name);
return(Create(instance));
}
/// <summary> /// Unregisters this format. /// </summary> /// <returns>True when the format was found and unregistered.</returns> public bool Unregister() => NativeMagickFormatInfo.Unregister(EnumHelper.GetName(Format));
