compute method

Implementation

List<AiliaTrackerObject> compute() {
  if (!available) {
    throw Exception("Tracker not created");
  }

  int status = ailiaTracker.ailiaTrackerCompute(ppAiliaTracker!.value);
  if (status != ailiaStatusSuccess) {
    throw Exception("ailiaTrackerCompute error $status");
  }

  final Pointer<UnsignedInt> count = malloc<UnsignedInt>();
  count.value = 0;
  status = ailiaTracker.ailiaTrackerGetObjectCount(
    ppAiliaTracker!.value,
    count,
  );
  if (status != ailiaStatusSuccess) {
    malloc.free(count);
    throw Exception("ailiaTrackerGetObjectCount error $status");
  }

  final List<AiliaTrackerObject> objects = [];
  final Pointer<ailia_tracker_dart.AILIATrackerObject> obj =
      malloc<ailia_tracker_dart.AILIATrackerObject>();
  for (int i = 0; i < count.value; i++) {
    status = ailiaTracker.ailiaTrackerGetObject(
      ppAiliaTracker!.value,
      obj,
      i,
      ailia_tracker_dart.AILIA_TRACKER_OBJECT_VERSION,
    );
    if (status != ailiaStatusSuccess) {
      malloc.free(obj);
      malloc.free(count);
      throw Exception("ailiaTrackerGetObject error $status");
    }
    objects.add(AiliaTrackerObject(
      id: obj.ref.id,
      category: obj.ref.category,
      prob: obj.ref.prob,
      x: obj.ref.x,
      y: obj.ref.y,
      w: obj.ref.w,
      h: obj.ref.h,
    ));
  }

  malloc.free(obj);
  malloc.free(count);

  return objects;
}