public unsafe ARCoreImageDatabase(XRReferenceImageLibrary serializedLibrary)
{
if (serializedLibrary == null)
{
m_Self = Deserialize(default(NativeView), default(NativeView));
}
else
{
using (var webRequest = new UnityWebRequest(ARCoreImageTrackingSubsystem.GetPathForLibrary(serializedLibrary)))
{
webRequest.downloadHandler = new DownloadHandlerBuffer();
webRequest.disposeDownloadHandlerOnDispose = true;
webRequest.SendWebRequest();
while (!webRequest.isDone)
{
}
byte[] libraryBlob = webRequest.downloadHandler.data;
if (libraryBlob == null || libraryBlob.Length == 0)
{
throw new InvalidOperationException(string.Format(
"Failed to load image library '{0}' - file was empty!", serializedLibrary.name));
}
var managedReferenceImages = new NativeArray <ManagedReferenceImage>(serializedLibrary.count, Allocator.Temp);
try
{
for (int i = 0; i < serializedLibrary.count; ++i)
{
managedReferenceImages[i] = new ManagedReferenceImage(serializedLibrary[i]);
}
fixed(byte *blob = libraryBlob)
{
m_Self = Deserialize(new NativeView(blob, libraryBlob.Length), NativeView.Create(managedReferenceImages));
}
}
finally
{
managedReferenceImages.Dispose();
}
}
}
}
static byte[] GetLibraryData(XRReferenceImageLibrary library)
{
// 4.2+
if (library.dataStore.TryGetValue(dataStoreKey, out var bytes))
{
return(bytes);
}
// Pre 4.2 fallback
using var webRequest = new UnityWebRequest(ARCoreImageTrackingSubsystem.GetPathForLibrary(library))
{
downloadHandler = new DownloadHandlerBuffer(),
disposeDownloadHandlerOnDispose = true
};
webRequest.SendWebRequest();
while (!webRequest.isDone)
{
}
return(webRequest.downloadHandler.data);
}
