Re: Error -40 from AudioFileWriteBytes or AudioFileWritePackets
Re: Error -40 from AudioFileWriteBytes or AudioFileWritePackets
- Subject: Re: Error -40 from AudioFileWriteBytes or AudioFileWritePackets
- From: Doug Wyatt <email@hidden>
- Date: Tue, 2 Aug 2011 11:48:53 -0700
From MacErrors.h:
posErr = -40, /*tried to position to before start of file (r/w)*/
On Aug 2, 2011, at 7:56 , Steve gfx wrote:
> Hi,
>
> I'm writing the contents of a buffer to a WAVE file using AudioFileWriteBytes . (I can use AudioFileWritePackets also, but I get exactly the same behaviour)
>
> The total number of bytes to write is about 400k which pre-exist, so need need to stream.
>
> If I set ioNumberBytes to 8192 or less, and loop through all the bytes, all works well, but If I set it higher than this I get a -40 error , which I can't locate in the docs.
>
> Although it works OK with these smaller chunks, obviously it's a little more inefficient as I have to loop through the buffer more times; I would prefer to write in as few chunks as possible, 1 preferably.
>
> Is this just an inherent limitation of those two functions?
>
> Thanks
>
> Steve _______________________________________________
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