[alsa-devel] IEC switch issues

Clemens Ladisch clemens at ladisch.de
Wed Jun 23 14:05:32 CEST 2010

pl bossart wrote:
> If I play my AC3 data on my HDAudio/SPDIF output using the hw:0,1
> device, I can use alsamixer/amixer to mute/unmute.
> Now if I use the iec958: plugin, I can't control the mute switch any longer:

Muting an AC-3 stream would require encoding a stream of silent PCM
samples (no data is not the same as silence); therefore, the iec958
plugin disallows muting.


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