2017-07-12 22:58 GMT+02:00 Tanu Kaskinen <[email protected]>: > I don't know how the endpoints are supposed to agree on the format, and > what kind of interface alsa provides for that (if any). The alsa-devel > list might be more appropriate for questions about spdif details. >
I've raised this question to alsa-user mail list, here is the response I got ( http://www.mail-archive.com/[email protected]/msg32163.html): > There would be a mixer control "IEC958 Capture Default" associated with > the PCM device (i.e., not a real mixer control visible in alsamixer), > containing the channel status bits; the "IEC958 Capture Mask" control > defines which bits are valid. Although it is not yet supported for USB cards, is pulseaudio able to read this information and provide it to applications? Best regards, Denis Shulyaka
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