2.2.3.18 Property Value Request
The Property Value Request message is sent by the server over a device channel to retrieve the current value of the specified device property of the video capture device. In response the client MUST send either the Property Value Response (section 2.2.3.19) or Error Response (section 2.2.3.2) message.
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PropertySet |
PropertyId |
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Header (2 bytes): A SHARED_MSG_HEADER (section 2.2.1) structure. The Version field MUST be set to the same value as in the Select Version Response (section 2.2.2.2) message. The MessageId field MUST be set to PropertyValueRequest (22).
PropertySet (1 byte): An 8-bit unsigned integer that specifies the property set of the property being queried. Valid property sets are defined in the description of the PropertySet field of the PROPERTY_DESCRIPTION (section 2.2.3.17.1) structure.
PropertyId (1 byte): An 8-bit unsigned integer that specifies the ID of the property being queried. Valid IDs are defined in the description of the PropertyId field of the PROPERTY_DESCRIPTION structure.