Re: [Sndobj-devel] Python SNdIO /Core Audio SetSr

[Edward H. <ed....@gm...>]

Thanks for the pointer to the solution however

now I've removed the constructor

outp = sndobj.SndCoreAudio()

and after  constructing aif1,aif2 replaced it with

objs[0]=aif1
objs[1]=aif2
objsp = objs.cast()
outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp)
which as expected still produces output at the wrong sampling rate
however if I extend this to
outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp ,
sndobj.SND_OUTPUT, 256, 22050)
or
outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp , 1)
or variants in between I get tracebacks similar to this

File "aif.py", line 20, in <module>
    outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp, 1) #, 256,
22050) #wrong args number
  File "/Users/edh/Contracts/StAndrews_1/sndobj/sndobj.py", line 2803,
in __init__
    this = _sndobj.new_SndCoreAudio(*args)
NotImplementedError: Wrong number of arguments for overloaded function
'new_SndCoreAudio'.
  Possible C/C++ prototypes are:
    SndCoreAudio(int,int,int,float,SndObj **,UInt32,int,float)
    SndCoreAudio(int,int,int,float,SndObj **,UInt32,int)
    SndCoreAudio(int,int,int,float,SndObj **,UInt32)
    SndCoreAudio(int,int,int,float,SndObj **)
    SndCoreAudio(int,int,int,float)
    SndCoreAudio(int,int,int)
    SndCoreAudio(int,int)
    SndCoreAudio(int)
    SndCoreAudio()

Best
 Ed

On 8/9/07, Victor Lazzarini <vic...@nu...> wrote:
> You will need to set the SR on all objects
> to 22050. It is generally the last argument
> (which defaults to 44100) of each object. You
> have done it with all SndObjs, but it looks
> like you left the SndCoreAudio to its default.
> You need to create it with the right SR.
>
> Victor
>
> >
> > Hi
> > I've been tinkering with PySndObj on the Mac .
> > BTW it built out of the box for python 2.5 with the
> > MacPython framework and appropriate build switches to
> > build the python wrapper. The examples work OK as does the
> > I have now got  to the point where I'm able to read an AIF
> > file and providing it's a PCM file get it to play back OK
> > apart from when the sampling rate is not the default
> > 44100. In the case in question it is 22050 but it plays
> > back as if 44100. (Thanks BTW to the wav file example
> > post) I have tried the commented options shown in the code
> > below, I'm new to the API so I'm not
> > sure if this is a bug or I'm not setting the sampling rate
> > in the right place. So suggestions welcomed. The example
> > file is in the /Developer/Examples/Java/Sound source tree.
> >
> > import sndobj
> > fn = '22-new.aif'
> > #fn = 'sound.aif'
> > af = sndobj.SndAiff(fn,sndobj.READ,2)
> > sr = af.GetSr()
> > vs = af.GetVectorSize()
> > print sr,vs
> > T1 = sndobj.SndThread()
> > sndin = sndobj.SndIn(af,1)
> > outp = sndobj.SndCoreAudio()
> > aif1 = sndobj.SndIn(af,1)
> > #aif1 = sndobj.SndIn(af,1,vs,sr)
> > #aif1.SetSr(sr)
> > aif2 = sndobj.SndIn(af,2)
> > #aif2 = sndobj.SndIn(af,2, vs, sr)
> > #aif2.SetSr(sr)
> > outp.SetOutput(1,aif1)
> > outp.SetOutput(2,aif2)
> > T1.AddObj(af,sndobj.SNDIO_IN)
> > T1.AddObj(aif1)
> > T1.AddObj(aif2)
> > T1.AddObj(outp,sndobj.SNDIO_OUT)
> > T1.ProcOn()
> > time.sleep(5)
> > T1.ProcOff()
> >
> > TIA
> > Ed
> >
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