• 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: Issues in ExtAudioFileSeek and ExtAudioFileTell
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Issues in ExtAudioFileSeek and ExtAudioFileTell


  • Subject: Re: Issues in ExtAudioFileSeek and ExtAudioFileTell
  • From: Abdul.Majeed <email@hidden>
  • Date: Thu, 12 Nov 2009 18:59:28 +0530

Hi Bill,

   I just followed your inputs that if the first call ExtAudioFileTell  immediately after setting client format returns a negative value then just assume that subsequent call to same apis will be off from prime Offset that make sense for me.

 However in that same scenario, for same .mp3 file with prime offset 576

1. if  I ask to move the read header to end of file by giving an input to ExtAudioSeek as total number of frames (file data format) , it is fine    //just for check
2. and then bring back the read header position to a value say for example, End Of File - 262144,  and ExtAudioFileSeek returns success
3.  and read a number of frames equal to 262144, it return success , however no data has been read (0 frames)
4.  However ExtAudioFileTell return the sample count, which is EndOfFile - primeOffset (of course make sense due to that it off from primeOffset).

Could you please tell me  what causing ExtAudioFileRead to return no value? I am getting total number of frames using call api ExtAudioFileGetPropery with kExtAudioFileProperty_FileLengthFrames. Am i doing something wrong while calculating total number of frames ? is there any other way? please



On Nov 12, 2009, at 1:48 AM, William Stewart wrote:

Abdul

You can use the ExtAudioFile API just fine if you make the slight adjustment that Doug recommends below - also by doing this you will know when you have to make the adjustment (with it not fixed) to when you don't (when we do fix it)

Bill

On Nov 10, 2009, at 9:13 PM, Abdul.Majeed wrote:

Hi Doug & Bill,

Thanks for your response in time.
As I can not use the ExtAudioFile apis in my case any more until you fix the issues in it, if you have any idea could you please let me know will that fix may be given as update or will that take much long time or so,
so that I can plan well?
Could you please also do not mind in  helping me by giving an alternative over here, that is decompress the audio file and read chunk by chunk with freely moving the read header position, at least some points, please?



 _______________________________________________
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

  • Follow-Ups:
    • Re: Issues in ExtAudioFileSeek and ExtAudioFileTell
      • From: tahome izwah <email@hidden>
References: 
 >Issues in ExtAudioFileSeek and ExtAudioFileTell (From: "Abdul.Majeed" <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: William Stewart <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Abdul.Majeed <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Doug Wyatt <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Doug Wyatt <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Abdul.Majeed <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: William Stewart <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Abdul.Majeed <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: Doug Wyatt <email@hidden>)
 >Re: Issues in ExtAudioFileSeek and ExtAudioFileTell (From: William Stewart <email@hidden>)

  • Prev by Date: Re: Equalizer and Spectrumanalyzer
  • Next by Date: Re: Equalizer and Spectrumanalyzer
  • Previous by thread: Re: Issues in ExtAudioFileSeek and ExtAudioFileTell
  • Next by thread: Re: Issues in ExtAudioFileSeek and ExtAudioFileTell
  • Index(es):
    • Date
    • Thread