Re: [Discuss-gnuradio] Re: gr.wavfile_source

[Martin Braun]

On Thu, Dec 18, 2008 at 11:25:04AM +0100, Dimitris Symeonidis wrote:
> Martin (or anyone else), I have an additional question about 
> gr_wavfile_source:
> 
> after opening the file (with self.src = gr.wavfile_source
> (options.filename, True)), is it possible to get some of the
> parameters and use them in the code?
> 
> I'm particularly interested in d_sample_rate(1), d_nchans(1),
> d_bytes_per_sample(2)
> 
> I tried self.src.d_nchans, but it tells me: AttributeError:
> 'gr_wavfile_source_sptr' object has no attribute 'd_nchans'

No, but if you check gnuradio-core/src/lib/io/gr_wavfile_source.i,
you'll see that the following methods get exported via SWIG:

  unsigned int sample_rate();
  int bits_per_sample();
  int channels();

which return exactly what you'd expect (I hope :).
Note this is bits - and not bytes - per sample you get.

Cheers,
mb

-- 
Dipl.-Ing. Martin Braun           Phone: +49-(0)721-608 3790
Institut fuer Nachrichtentechnik  Fax:   +49-(0)721-608 6071
Universitaet Karlsruhe (TH)       http://www.int.uni-karlsruhe.de/

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