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Defines how many sub-components a result will be composed of.
In order to combat the pipeline latency, partial results may be delivered to the application layer from the camera device as soon as they are available.
Optional; defaults to 1. A value of 1 means that partial results are not supported, and only the final TotalCaptureResult will be produced by the camera device.
A typical use case for this might be: after requesting an auto-focus (AF) lock the new AF state might be available 50% of the way through the pipeline. The camera device could then immediately dispatch this state via a partial result to the application, and the rest of the metadata via later partial results.
Range of valid values:
>= 1
Optional - This value may be null on some devices.