Re: IEC958 plugin and Rate plugin programming

[Luca Piccioni <luca.piccioni@gmail.com>]

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Clemens Ladisch wrote:

> What is the actual problem?

Well... no sound! I've used "aplay" to test the S/PDIF output. The
soundcard seems to
work well, because the ampli recognize PCM / Digital, so I suppose the
connection between
PC and ampli is correct.

So first I tried "aplay -Dhw:0,4" test.wav", but no sound. Then I've
tried also "iec958" and "spdif",
but nothing is outputted!
Application work without reporting any error (only a warning if I'm
not using a 48 kHz PCM, eliminable
using "plug:iec958" as device).

For the moment I haven't tried to use "iec958:0" as device because I
don't have the amplifier to test
audio. Any suggestion to know if any PCM data is outputted to a
particoular device?

My soundcard is a Realtek ALC850 (reported by alsamixer), and I'm
using the intel8x0 ALSA module. I'm
also programming a multimedia application, so I've tried to use the
snd_pcm_iec958_open... I thought this
was the solution! :-/ As I've understood, this plug (iec958) it's used
automatically when I setup i linear
PCM to the spdif device? While I have to create this plug
(programming) whenever the soundcard can't
do this task?

About mixers (sorry for the stupid question, but for me it's quite
new!): what mixers I should enable
to output to digital?

Thanks for all your help!

Luca
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