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

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Problem is the constructor  still expects 8 args not the 7 you suggest
I introduced the sndobj.SND_OUTPUT argument to provide the 8th. I
think this is a prototyping issue in
SWIG though my close familiarity with SWIG predates the C++ extensions.
However I note the the cpp source constructor is
SndCoreAudio::SndCoreAudio(int channels,int bufframes, int buffnos,
float norm, SndObj** inObjs,
			   UInt32 dev,  int vecsize, float sr)
i.e. 8 args the 6th being the device.

The python traceback remains as follows irrespective of whether 7 or 8
args are provided or whether sndobj.SND_OUTPUT or a python int is
passed.

File "aif.py", line 20, in <module>
    outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp, 256,
22050.0) #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()

I suspect that the constructor is looking for a C++ Uint32 in the 6th
argument but where to pick an appropriate one from?

if sndobj.DEF_DEV is substituted for the 6th arg the following
traceback is obtained:
22050.0 256 which is reasonable enough as this is another function reference.

Python(620,0xa000d000) malloc: ***  Deallocation of a pointer not
malloced: 0x613158; This could be a double free(), or free() called
with the middle of an allocated block; Try setting environment
variable MallocHelp to see tools to help debug
Python(620,0xa000d000) malloc: ***  Deallocation of a pointer not
malloced: 0x709458; This could be a double free(), or free() called
with the middle of an allocated block; Try setting environment
variable MallocHelp to see tools to help debug
Python(620,0xa000d000) malloc: ***  Deallocation of a pointer not
malloced: 0x7bdcf0; This could be a double free(), or free() called
with the middle of an allocated block; Try setting environment
variable MallocHelp to see tools to help debug

I can't see anything obvious in SndCoreAudio.h or AudioDefs.i
Ed

On 8/10/07, Victor Lazzarini <vic...@nu...> wrote:
> Try
>
> outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp ,256,
> 22050.0)
>
> There is no sndobj.SND_OUTPUT argument for
> SndCoreAudio (it always opens full-duplex).
>
> Victor
>
>
> >
> > 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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