public void CleanUpNativeData(IntPtr pNativeData)
{
unsafe
{
if (pNativeData != IntPtr.Zero)
{
NativeMetadataParams *metadata = (NativeMetadataParams *)pNativeData;
if (metadata->iccProfile != IntPtr.Zero)
{
Marshal.FreeHGlobal(metadata->iccProfile);
}
if (metadata->exif != IntPtr.Zero)
{
Marshal.FreeHGlobal(metadata->exif);
}
if (metadata->xmp != IntPtr.Zero)
{
Marshal.FreeHGlobal(metadata->xmp);
}
Marshal.FreeHGlobal(pNativeData);
}
}
}
public IntPtr MarshalManagedToNative(object ManagedObj)
{
if (ManagedObj == null)
{
return(IntPtr.Zero);
}
WebPNative.MetadataParams metadata = (WebPNative.MetadataParams)ManagedObj;
IntPtr nativeStructure = Marshal.AllocHGlobal(NativeMetadataParamsSize);
unsafe
{
NativeMetadataParams *nativeMetadata = (NativeMetadataParams *)nativeStructure;
if (metadata.iccProfile != null && metadata.iccProfile.Length > 0)
{
nativeMetadata->iccProfile = Marshal.AllocHGlobal(metadata.iccProfile.Length);
Marshal.Copy(metadata.iccProfile, 0, nativeMetadata->iccProfile, metadata.iccProfile.Length);
nativeMetadata->iccProfileSize = new UIntPtr((uint)metadata.iccProfile.Length);
}
else
{
nativeMetadata->iccProfile = IntPtr.Zero;
nativeMetadata->iccProfileSize = UIntPtr.Zero;
}
if (metadata.exif != null && metadata.exif.Length > 0)
{
nativeMetadata->exif = Marshal.AllocHGlobal(metadata.exif.Length);
Marshal.Copy(metadata.exif, 0, nativeMetadata->exif, metadata.exif.Length);
nativeMetadata->exifSize = new UIntPtr((uint)metadata.exif.Length);
}
else
{
nativeMetadata->exif = IntPtr.Zero;
nativeMetadata->exifSize = UIntPtr.Zero;
}
if (metadata.xmp != null && metadata.xmp.Length > 0)
{
nativeMetadata->xmp = Marshal.AllocHGlobal(metadata.xmp.Length);
Marshal.Copy(metadata.xmp, 0, nativeMetadata->xmp, metadata.xmp.Length);
nativeMetadata->xmpSize = new UIntPtr((uint)metadata.xmp.Length);
}
else
{
nativeMetadata->xmp = IntPtr.Zero;
nativeMetadata->xmpSize = UIntPtr.Zero;
}
}
return(nativeStructure);
}
