Philips BDS4621-27 - Manual (Page 52)

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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User Manual BDS4621
BDS4621_EN.qxd 13-12-2004 10:38 Pagina 52