• 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: SPDIF audio in DVD Player
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: SPDIF audio in DVD Player


  • Subject: Re: SPDIF audio in DVD Player
  • From: Mark Cookson <email@hidden>
  • Date: Mon, 01 Aug 2005 13:47:09 -0500

Your clipOutputSamples routine gets passed the raw 16-bit stereo data, you
don't need to do any conversion to it.  Your buffer should be taking 1536
samples per buffer for AC-3.

I've noticed that, occasionally, I'll get a call to clipOutputSamples that
has a bogus number of samples, well in excess of 1536.  In those cases, I
just immediately return from clipOutputSamples and there is no detectable
loss of audio (which is quite strange as well).

--
Mark Cookson
M-Audio, a part of Avid
225 Locust St.
Hudson, WI 54016

On 8/1/05 10:35 AM, "Fabian Renn" <email@hidden> wrote:

> i've gotten SPDIF audio to work on my device. Now i'm having problems
> with my clipping routine 'clipOutputSamples'. This routine always
> crashes. Now, in what format do i get the ac-3 samples. As 2 channel
> floats? Or as 16 bit ints? ( So, the IOProc format, not the physical
> format  ) Second Question: When i use spdif output in the dvd player,
> playback really slows down ( to about 1 - 2 fps ) and the playback
> time starts going crazy. Do i need to have some sort of special
> sample buffer size ( like in VLC )? Are my inaccurate time stamps
> causing the trouble?

 _______________________________________________
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: 
 >SPDIF audio in DVD Player (From: Fabian Renn <email@hidden>)

  • Prev by Date: AudioFile -> AudioConverter -> float PCM
  • Next by Date: Re: Creating Aggregate Devices programmatically
  • Previous by thread: SPDIF audio in DVD Player
  • Next by thread: Re: SPDIF audio in DVD Player
  • Index(es):
    • Date
    • Thread