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Hello,

On Dec 7, 2006, at 12:52, Marco Trillo wrote:

> On 12/7/06, Marco Trillo <marcotrillo@gmail.com> wrote:

>> When playing an audio file at 48000 samples/sec on snapper(4) on
>> NetBSD 3.1, it plays at a speed of 44100 samples/sec (so it plays at
>> 91% speed and with pitch distortion).
>
> Well, I finally got it working!

Great!

> The problem was in snapper_set_rate().
> The Mac OS X I2S controller uses by default a MCLK-to-samplerate ratio
> of 64 which gets a more accurate result.
> However, snapper.c used a ratio of 256 which produced the same result
> for both 44100 and 48000.
>
> If you add a printf() to the current snapper.c to read the variables
> 'mdiv' and 'sdiv', you will see that it will produce the same results
> for both 44100 and 48000.
>
> The following patch for NetBSD 3.1 solves the problem.
> It works for me! Now I get 48 kHz audio! :-)
>
> I will try to make an updated patch against NetBSD-current (and by the
> way add support for 32 kHz too) and send it through send-pr(1).

Ok, I'll wait ;)

have fun
Michael
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