Re: accessing Final Cut Pro Apple Events from Carbon

17 Sep 2008

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Best luck,
Helena
On Sep 17, 2008, at 4:05 PM, Tommy Schell wrote:
Thanks for the reply.

************************
the event struct:
struct apple_fcp_event {
 AppleEvent    theEvent;
 AppleEvent    theReplyEvent;
 AEAddressDesc  appAddr;
 AEDescList    paramList;
 OSStatus    err;
} my_event;
************************
initializing code:
      // init event struct
       AECreateDesc(typeNull, NULL, 0, &(my_event.appAddr));
       AECreateDesc(typeNull, NULL, 0, &(my_event.theEvent));
       AECreateDesc(typeNull, NULL, 0, &(my_event.theReplyEvent));
       AECreateList(NULL, 0, false, &(my_event.paramList));

************************
// create event like so:
//       create_event (kAEFCPOpenProjectFile);
void create_event (OSType eventType) {
       OSType my_class = kFCPEventClass;

       }
}

************************
// add a project file like so:
//	        CFStringRef x = CFSTR ( "/Users/tommyschell/myfoo.fcp");
//	        assign_project_file ( x ) ;
       FSRef           fileFSRef;
       CFURLRef        ref;
}

************************
// send event

************************
// clean up
void clean_up_event () {
       // clean up
       AEDisposeDesc(&(my_event.paramList) );
       AEDisposeDesc(&(my_event.theReplyEvent) );
       AEDisposeDesc(&(my_event.theEvent) );
       AEDisposeDesc(&(my_event.appAddr) );
}

Can't get FCP to act, though it returns noErr.
Any ideas?
Thanks, Tommy Schell

On Sep 16, 2008, at 10:28 AM, Darrin Cardani wrote:
On Sep 16, 2008, at 9:02 AM, Tommy Schell wrote:
Can Final Cut Pro Apple events be used in Carbon?

Darrin
--
Darrin Cardani
dcardani@apple.com

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Hi Tommy,

The following link has a description of how to turn on Apple Event
Logging to see what is going wrong:

http://developer.apple.com/documentation/AppleScript/Conceptual/AppleEvents/...
I think I also found a problem in your event creation (noted in-line
below)
I actually appear to get an error value of noErr from my AESend
call, but nothing happens in Final Cut.

If I do the same action from the sample code FinalCutPro_AppleEvents
(an attempt to open a project),

it opens no problem.
So in my Carbon code (which is actually a jni lib with a java
interface), I've extracted some code from the

Cocoa sample FinalCutPro_AppleEvents:  (which, again, results in
noErr from AESend but nothing happens)
       // create open project event

       if (my_event.err == noErr) {

               my_event.err = AECreateDesc(typeApplSignature,
&my_class, sizeof(OSType), &(my_event.appAddr) );

       }

       if (my_event.err == noErr) {

               my_event.err = AECreateAppleEvent(eventType,
kFCPEventClass, &(my_event.appAddr) , kAutoGenerateReturnID,
kAnyTransactionID, &(my_event.theEvent) );

I think this should be:

               my_event.err = AECreateAppleEvent(my_class ,
eventType, &(my_event.appAddr) , kAutoGenerateReturnID,
kAnyTransactionID, &(my_event.theEvent) );
// pass in a posix style path (relative or absolute i think),
converted to url then fsref

void assign_project_file ( CFStringRef path) {
       ref = CFURLCreateWithFileSystemPath(NULL, (CFStringRef)path,
kCFURLPOSIXPathStyle, false);
      if (CFURLGetFSRef(ref, &fileFSRef))

       {

               my_event.err = AEPutParamPtr(&(my_event.theEvent) ,
kFCPProjectFileKey, typeFSRef, &fileFSRef, sizeof(FSRef));

       }
       // ship it

       if (my_event.err == noErr) {

               my_event.err = AESend(&(my_event.theEvent),
&(my_event.theReplyEvent), kAEWaitReply, kAEHighPriority,
kAEDefaultTimeout, NULL, NULL);

       }
I can't seem to get FCP to respond from Carbon code.  I extracted
the necessary code

from the Cocoa sample FinalCutPro_AppleEvents over to Carbon but
now it doesn't work.

Yes, FCP Apple Events can be used in Carbon. The OS shouldn't care
what libraries a given app links against when using Apple Events.
You might want to post a snippet of code and what error values
you're getting back.
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Re: accessing Final Cut Pro Apple Events from Carbon

Helena Ju