ADIC Digital Camera 601355 Rev A 사용자 설명서

601355 Rev A

API Functions

2-723

60  else

61  {

62  

/* query all media classes */

63  rc 

= 

VSCMD_MediaClassQuery(cmd,

64  VSID_QRY_OPTION, 

queryopt,

65  

VSID_CLASS_QRY_OPTION, 

querylistopt,

66  VSID_ENDFIELD);

67  }

68  }

69  

return ( rc );

70 }

The API must be initialized with a call to 

VS_Initialize

 

before this function can be executed.

VolServ can generate intermediate status in response to a 
MediaClassQuery request. 

VSCMD_MediaClassQuery

 does not trigger any 

MediaClass callbacks from VolServ.

When all media classes are requested, each MediaClass status is 
reported in a group of one or more intermediate status 
messages. 

If a request for MediaClass status determines there is no 
MediaClass status on which to report, the status message 
returns a 

STATUS_FAIL

 with error of 

ERR_NOTFOUND

.

The total length of time the API software waits for a command 
status in synchronous mode from VolServ is 
(

VSID_RETRY_LIMIT

 plus 1) multiplied by 

VSID_TIMEOUT_VALUE

.