Philips BDS4621 user manual Operation Packet Type, Operationexecute

User Manual BDS4621

Operation Packet Type

The Operation packet is used by the host system to execute operations (such as Brightness, Contrast, Image Position, etc) in the target system. The Operation packet payload size is 25 bytes.

Byte	Field Name	Field Value		Description
0	Operation Type	1		OPERATION_SET
		2		OPERATION_GET
		3	OPERATION_INCREMENT
		4	OPERATION_DECREMENT
		5	OPERATION_EXECUTE
1-2	Operation		Operation ID as defined in Configurator
3-4	Is Avail		Operation is available
5-8	Operation Target		Used for Operation with Targets.
			These Targets are defined in configurator.
			For instance, op_BRIGHTNESS has a
			Target of either MAIN or PIP window.
9-12	Operation Value		Value of the Set on a set or the Value of the
				Get on a Return.
13-16	Operation Value		The Minimum Value of the set
	of minimum		for operation command.
17-20	Operation Value		The Maximum Value of the set
	of maximum		for operation command.
21-24	Operation Value		The Increment Value of the set
	of Increment		for operation command.
			Table 8: Operation Packet Payload Format
			The source code definition of the Operation
			packet data structure is:
			typedef struct
			{
			eOPERATION_TYPE		eOpType;
			WORD	eOperation;
			WORD	bisAvail;
			DWORD	dwTarget;
			DWORD	dwValue;
			DWORD	lmMin;
			DWORD	lmMax;
			DWORD	lmInc;
			} OPERATION_MESSAGE;

This lets the user directly perform logical operations such as "Set Contrast = 80".

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