protected override unsafe JobHandle ScheduleAddImageJobImpl(
NativeSlice <byte> imageBytes,
Vector2Int sizeInPixels,
TextureFormat format,
XRReferenceImage referenceImage,
JobHandle inputDeps)
{
if (!referenceImage.specifySize)
{
throw new InvalidOperationException("ARKit requires physical dimensions for all reference images.");
}
// Add a reference to keep the native object alive
// even if we get finalized while a job is running
UnityARKit_CFRetain(nativePtr);
// RGBA32 is not supported by CVPixelBuffer, but ARGB32 is, so
// we offer a conversion for this common case.
var convertedImage = new NativeArray <byte>();
if (format == TextureFormat.RGBA32)
{
int numPixels = sizeInPixels.x * sizeInPixels.y;
convertedImage = new NativeArray <byte>(
numPixels * 4,
Allocator.Persistent,
NativeArrayOptions.UninitializedMemory);
inputDeps = new ConvertRGBA32ToARGB32Job
{
rgbaImage = imageBytes.SliceConvert <uint>(),
argbImage = convertedImage.Slice().SliceConvert <uint>()
}.Schedule(numPixels, 64, inputDeps);
// Format is now ARGB32
format = TextureFormat.ARGB32;
}
// Schedule the actual addition of the image to the database
inputDeps = new AddImageJob
{
image = convertedImage.IsCreated ? new NativeSlice <byte>(convertedImage) : imageBytes,
database = nativePtr,
width = sizeInPixels.x,
height = sizeInPixels.y,
physicalWidth = referenceImage.size.x,
format = format,
managedReferenceImage = new ManagedReferenceImage(referenceImage)
}.Schedule(inputDeps);
// If we had to perform a conversion, then release that memory
if (convertedImage.IsCreated)
{
inputDeps = new DeallocateNativeArrayJob <byte> {
array = convertedImage
}.Schedule(inputDeps);
}
return(inputDeps);
}
NativeArray <byte> GetImageBytesToConvert(
NativeSlice <byte> imageBytes, Vector2Int sizeInPixels, ref TextureFormat format, ref JobHandle inputDeps)
{
// RGBA32 is not supported by CVPixelBuffer, but ARGB32 is, so
// we offer a conversion for this common case.
if (format == TextureFormat.RGBA32)
{
int numPixels = sizeInPixels.x * sizeInPixels.y;
var argb32ImageBytes = new NativeArray <byte>(
numPixels * 4,
Allocator.Persistent,
NativeArrayOptions.UninitializedMemory);
inputDeps = new ConvertRGBA32ToARGB32Job
{
rgbaImage = imageBytes.SliceConvert <uint>(),
argbImage = argb32ImageBytes.Slice().SliceConvert <uint>()
}.Schedule(numPixels, 64, inputDeps);
// Format is now ARGB32
format = TextureFormat.ARGB32;
return(argb32ImageBytes);
}
// No conversion necessary; echo back inputs
return(default);
