Help with FFI - another try
John M McIntosh
johnmci at smalltalkconsulting.com
Wed Jul 19 20:13:10 UTC 2006
So how many bytes are being allocated here?
how many bytes do you expect to write into that location?
Are these bytes, or words you're expecting? 1 word -> 4 bytes?
On 19-Jul-06, at 4:40 AM, Eugene Beschastnov wrote:
> And I'm trying to call it in following way:
> pMp3Buffer := ByteArray new: dwMp3Buffer.
Lastly I'll note that
mp3Output addAll: (pMp3Buffer copyFrom: 1 to: pDwWrite first)].
could be expressed as this, since the copyFrom:to: makes a new object
of the same class as the original,
no need to stuff that new object into mp3Output.
mp3Output := pMp3Buffer copyFrom: 1 to: pDwWrite first.
regarding
pDwWrite first
Ah, likely you should do
pDwWrite := ByteArray new: 4.
then say pDwWrite signedLongAt: 1
if it's a signed long in platform endian you expect to find there,
this is clearer than hoping the
value you got stuff in there is an integer of some sort in the right
endian format.
--
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John M. McIntosh <johnmci at smalltalkconsulting.com>
Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com
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