internal unsafe void Init(int _maxCount, bool _need3D)
{
context = default(HandLib.Context);
context.minHandSize = 60;
context.maxCount = (UInt16)_maxCount;
storage = new HandData[context.maxCount];
need3D = _need3D;
string str = Application.persistentDataPath;
fixed(byte *path = context.modelPath.folderPath)
{
for (int i = 0; i < str.Length; i++)
{
path[i] = (byte)str[i];
}
}
HandLib.Init(ref context);
if (need3D)
{
Hand3DLib.Init(ref context3D);
}
}
unsafe IEnumerable <T> ITranslator.Fetch <T>(IEnumerable <T> result)
{
// Only `HandData` can be fetched
if (typeof(T) != typeof(HandData))
{
throw new NotSupportedException($"Available types: `{typeof(HandData).FullName}`");
}
// this code doesn't implement memory reusage
Profiler.BeginSample("HandTranslator.Fetch");
// apply 3D fitting for each hands if needed
if (need3D && ReadWebcam.instance.prepared)
{
Hand3DLib.SetCameraInfo(ref context3D, (UInt16)ReadWebcam.instance.current.requestedWidth, (UInt16)ReadWebcam.instance.current.requestedHeight, (UInt16)Screen.width, (UInt16)Screen.height);
fixed(HandData *hands = storage)
{
for (var i = 0; i < count; ++i)
{
Hand3DLib.Process(ref context3D, ref storage[i]);
}
for (var p = 0; p < HandData.NumPoints; ++p)
{
hands[0].Points[p] *= 10;
}
}
}
Profiler.EndSample();
// segment of reserved storage
return(result = new ArraySegment <HandData>(storage, 0, count)
as IEnumerable <HandData> // double casting.
as IEnumerable <T>); // usually this is bad
}
unsafe Task <ITranslator> IDetectService.Detect(ref ImageData image)
{
Profiler.BeginSample("HandService.DetectAsync");
// too small image
if (image.WebcamWidth < 40)
{
Debug.LogWarning("HandService.DetectAsync: image is too small");
goto DetectDone;
}
if (promise != null)
{
promise.TrySetCanceled();
// the number of detected hands
fixed(HandData *handPtr = translator.storage)
{
translator.count = (UInt16)HandLib.Detect(ref translator.context, ref image, handPtr);
}
DetectDone:
// return result in translator form
promise = new TaskCompletionSource <ITranslator>();
promise.SetResult(translator);
Profiler.EndSample();
return(promise.Task);
}
void IDisposable.Dispose()
{
Debug.LogWarning("HandService.Dispose");
HandLib.Release(ref translator.context);
if (need3D)
{
Hand3DLib.Release(ref translator.context3D);
}
if (promise == null)
return; }
promise.TrySetCanceled();
promise = null;
}
