Draft metadata.

src/schema/datatypes/func.yaml

@@ -17,6 +17,14 @@
     dir: optional
     run: optional
     echo: optional
+  metadata:
+    Manufacturer: optional
+    ManufacturersModelName: optional
+    DeviceSerialNumber: optional
+    StationName: optional
+    RepetitionTime: required
+    VolumeTiming: required
+    TaskName: required
 - suffixes:
     - events
   extensions:

src/schema/metadata/Manufacturer.yaml

@@ -0,0 +1,7 @@
+description: "Manufacturer of the equipment that produced the composite
+              instances.
+              Corresponds to DICOM Tag 0008, 0070 Manufacturer"
+format: label
+unit: None
+mutually_exclusive: None
+requires: None

src/schema/metadata/RepetitionTime.yaml

@@ -0,0 +1,13 @@
+description: "The time in seconds between the beginning of an acquisition of one
+              volume and the beginning of acquisition of the volume following it (TR).
+              Please note that this definition includes time between scans
+              (when no data has been acquired) in case of sparse acquisition schemes.
+              This value needs to be consistent with the pixdim[4] field
+              (after accounting for units stored in xyzt_units field) in the NIfTI header.
+              This field is mutually exclusive with VolumeTiming and is derived from
+              DICOM Tag 0018, 0080 and converted to seconds."
+format: float
+unit: seconds
+mutually_exclusive:
+  - VolumeTiming
+requires: None