• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: How to implement a time line? (current playing time line)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: How to implement a time line? (current playing time line)


  • Subject: Re: How to implement a time line? (current playing time line)
  • From: William Stewart <email@hidden>
  • Date: Mon, 24 Nov 2008 12:51:47 -0800

MP3 is typically not a CBR format, but is a VBR format, so you would not know how many bytes are used to represent a sliver of time.

So, you would count audio packets, and deal with everything as an audio packet - where each packet is a variable size but represents the same length of time.

On Nov 22, 2008, at 9:27 PM, Ignacio Enriquez wrote:

I wonder how can I implement a time line
I am planning to use something like a progress bar but I am not sure
how to get the current playing time from a Queue.
I am using CBR compressed files ,like *mp3, inside my queue.
I have an Idea.
Since I am using CBR files, I could know the current playing time by
looking at the current packet (the one which is played at that moment)
and calculate the time by doing:
currentPacket/totalPackets and multiplying this by the length of the song.


Am I in the correct way?
Or Is there any easier way or maybe a function I can use?
Thanks In Advance.
Ignacio.



--
_____________________________________________
Guillermo Ignacio Enriquez Gutierrez
Shibaura Institute Of Technology
Faculty of Engineering
Department of Information Science & Engineering
Senior Student
_____________________________________________
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden

_______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
References: 
 >How to implement a time line? (current playing time line) (From: "Ignacio Enriquez" <email@hidden>)

  • Prev by Date: Re: Please help with Audio Session and RemoteIO AU on iPhone and iPod touch
  • Next by Date: Re: hardcoded microphone buffering in iPhone?
  • Previous by thread: How to implement a time line? (current playing time line)
  • Next by thread: hardcoded microphone buffering in iPhone?
  • Index(es):
    • Date
    • Thread