Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

QuickTime IIDC Camera Interface and IIDC Standard

I had some trouble understanding how QuickTime IIDC camera feature flags map to the IIDC standard.

                         

For what concerns the features CAPABILITIES, I come up with this mapping

QuickTimeIIDC Standard            IIDC Standard
vdIIDCFeatureFlagOn               PRESENCE
vdIIDCFeatureFlagOff              ONOFF
vdIIDCFeatureFlagManual           MANUAL
vdIIDCFeatureFlagAuto             AUTO
vdIIDCFeatureFlagTune             ONE_PUSH
vdIIDCFeatureFlagRawControl       READOUT
vdIIDCFeatureFlagAbsoluteControl  ABS_CONTROL

Note however that the mapping is imperfect (for instance vdIIDCFeatureFlagOn does not quite match PRESENCE). Besides, what really confuses me is how these flags should be interpreted when WRITING the SETTINGS of a feature in order to obtain the expected IIDC behavior. For example, if vdIIDCFeatureFlagOn really corresponds to PRESENCE, it should always be equal to one. Moreover, it is not clear what happens with conflicting settings such as vdIIDCFeatureFlagOn|vdIIDCFeatureFlagOff. Finally, the IIDC standard couples the flags AUTO, ONE_PUSH and ONOFF in a specific way, and it is not clear how this maps to QuickTime.

Is there any accurate description of these mechanisms?

Regards,

Andrea Vedaldi

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
QuickTime-API mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quicktime-api/email@hidden

This email sent to email@hidden


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.