/// <summary>
/// Attempt to get the latest person mask data that corresponds to the current frame
/// for CPU access. Each pixel represents the confidence of the segmentation result:
/// 255 represents high confidence that the pixel is part of a person, 0 represents
/// high confidence that the pixel is not part of a person. If the data is available,
/// it is copied into the output image buffer.
/// </summary>
/// <param name="occlusionManager">The AROcclusionManager instance.</param>
/// <param name="outputBuffer">
/// The output image buffer to be filled with raw image data.</param>
/// <returns>If available, returns a Vector2Int which represents the size of the image.
/// Otherwise, returns <c>Vector2Int.zero</c> and logs the failure reason, e.g.
/// Segmentation Mode is Disabled, or current camera configuration s incompatible with
/// <c><see cref="SegmentationMode"/></c>.<c>People</c>.</returns>
public static Vector2Int TryAcquirePersonMaskRawData(
this AROcclusionManager occlusionManager, ref byte[] outputBuffer)
{
if (ARCoreExtensions._instance.ARCoreExtensionsConfig.SegmentationMode !=
SegmentationMode.People)
{
Debug.LogWarning(
"Person mask data is not available when SegmentationMode is not People.");
return(Vector2Int.zero);
}
if (!TryGetLastFrameFromExtensions(out XRCameraFrame frame))
{
return(Vector2Int.zero);
}
Vector2Int imageSize = Vector2Int.zero;
IntPtr sessionHandle = ARCoreExtensions._instance.currentARCoreSessionHandle;
IntPtr imageHandle = FrameApi.AcquirePersonMaskImage(
sessionHandle, frame.FrameHandle());
if (imageHandle != IntPtr.Zero)
{
imageSize = ImageApi.UpdateRawData(
sessionHandle, imageHandle, ref outputBuffer);
ImageApi.Release(imageHandle);
}
return(imageSize);
}