Re: Working with QTTime
Re: Working with QTTime
- Subject: Re: Working with QTTime
- From: Bob Ippolito <email@hidden>
- Date: Tue, 31 May 2005 17:11:36 -0700
Take a look at <http://developer.apple.com/documentation/QuickTime/
Reference/QTKitRefUpdate/Articles/QTKit.html>
Down by QTTime.h, there's a bunch of functions for going between
QTTime, NSTimeInterval, etc.
-bob
On May 31, 2005, at 5:06 PM, Richard Salvatierra wrote:
Yes, I was just discovering that. Is there a way to get / convert
a QTTime to a float value. Or how do I get a float value
(currentTime, duration) directly from a QTMovie?
-Rich
On May 31, 2005, at 8:00 PM, Bob Ippolito wrote:
No, that will not work. QTTime is NOT a float, it is a QTTime
struct, which is why it's a NSValue rather than an NSNumber.
-bob
On May 31, 2005, at 4:47 PM, Andrew Merenbach wrote:
Hi, Rich. NSValue has no direct conversion method (well, not at
a high level), but NSNumber inherits directly from NSValue. Thus
if you replace NSValue with NSNumber in your second and third
lines of code, you will be then able to say [durationValue
floatValue] or [currentValue floatValue].
I don't know much about QuickTime controls, so if something else
is wrong with this method I might not have caught it.
Cheers,
Andrew Merenbach
On May 31, 2005, at 2:17 PM, Richard Salvatierra wrote:
Disclaimer - New to Objective-C
I am trying to use the ProgressView / Cell class from the
developer sample code to create a progress bar for a QTMovie.
I want to get the status of the movie as a percent from
currentTime / Duration but do not understand QTTime. Code:
NSDictionary *myAtts = [theMovie movieAttributes];
NSValue *durationValue = [myAtts objectForKey:
QTMovieDurationAttribute];
NSValue *currentValue = [myAtts objectForKey:
QTMovieCurrentTimeAttribute];
How do I get a float value from an NSValue?
Thanks, Rich
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