adding movieAttributes later on is (apparently?) not kosher on Lion

[briangibson]

Allo again. I'm poking around with Quicktime X. If I left it the way it was, my app would crash.

For quicktime X support, I had to comment the following:

// frameCount = movieDuration.timeValue / frameStep;
// NSLog(@" movie has %d frames ", frameCount);

and

// self.volume = 1.0;
// self.loops = YES;

to get Quicktime X to load my movie files properly.
this is probably because (i'm assuming, anyway...) quicktime X wants you to perform these tasks in a callback once the movie is sufficiently loaded. I am working on a fix for those at the moment which involves NSNotifications that call movieLoadStateChanged. Also, to get quicktime X to load properly on Lion with the QTMovieOpenForPlaybackAttribute attribute, i had to declare it in the movieAttributes dictionary as soon as it is created. I'm not sure why this is. My current hacky workaround for Quicktime X support is as follows:

#ifdef MAC_OS_X_VERSION_10_6 || MAC_OS_X_VERSION_10_7

    if(self.useTexture && !self.usePixels){
        NSLog(@"osx 10.6 or 10.7 texture only, so loading quicktime X");
        NSMutableDictionary* movieAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                                [NSURL fileURLWithPath:[moviePath stringByStandardizingPath]], QTMovieURLAttribute,
                                                [NSNumber numberWithBool:NO], QTMovieOpenAsyncOKAttribute,
                                                //[NSNumber numberWithBool:NO], QTMovieOpenAsyncRequiredAttribute,
                                                [NSNumber numberWithBool:YES], QTMovieOpenForPlaybackAttribute,
                                                nil];
        _movie = [[QTMovie alloc] initWithAttributes:movieAttributes 
                                               error: &error];
    }
    else{

        NSLog(@"osx 10.6 or 10.7, pixel buffer requested so no quicktime X");
         NSMutableDictionary* movieAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                                [NSURL fileURLWithPath:[moviePath stringByStandardizingPath]], QTMovieURLAttribute,
                                                [NSNumber numberWithBool:NO], QTMovieOpenAsyncOKAttribute,
                                               // [NSNumber numberWithBool:NO], QTMovieOpenAsyncRequiredAttribute,
                                                [NSNumber numberWithBool:NO], QTMovieOpenForPlaybackAttribute,
                                                nil];
        _movie = [[QTMovie alloc] initWithAttributes:movieAttributes 
                                               error: &error];
    }
#endif

    #ifndef MAC_OS_X_VERSION_10_7
        #ifndef MAC_OS_X_VERSION_10_6
        NSLog(@"osx 10.x, no quicktime X");
        NSMutableDictionary* movieAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                                [NSURL fileURLWithPath:[moviePath stringByStandardizingPath]], QTMovieURLAttribute,
                                                [NSNumber numberWithBool:NO], QTMovieOpenAsyncOKAttribute,
                                                //[NSNumber numberWithBool:NO], QTMovieOpenAsyncRequiredAttribute,
                                                [NSNumber numberWithBool:NO], QTMovieOpenForPlaybackAttribute,
                                                nil];
        _movie = [[QTMovie alloc] initWithAttributes:movieAttributes 
                                             error: &error];
        #endif
    #endif

I should also mention that #ifdef MAC_OS_X_VERSION_10_7 does not get called on my Lion system.
EDIT: i had to change my OF deployment target in Xcode, now it does.
My next step includes asynchronous loading support.

[briangibson]

I poked around with this for a bit longer, got async loading working with simple NSNotification callbacks, and quicktime X support (which was kind of awful, actually), but couldn't find any good method for multithreaded movie loading in the qtkit API. I went back to my modified version of gameoverhack's pthread-based (ofThread) GWorld -(old school,deprecated) quicktime movie loader for the time being until i can do more research on threaded movie loading with QTKit.

EDIT: after changing my loading method so that all my movies that i will ever use are pre-cached on app load and paused, performance seems reasonable using the quicktime 7.0 qtkit methods.