Re: [BULK] Re: CMIPCI driver. IEC958 user data and channel status

[Takashi Iwai <tiwai@suse.de>]

At Tue, 17 Oct 2006 13:16:57 +0200,
Assaf Hoffman wrote:
> 
> Hi,
> Thank you for your answer.
> I would be happy if you could address the following correlated
> questions:
> 1) According to your experience, is it correct to assume that once a PCM
> 
>    instance for playback/capture is prepared and triggered, the user
> data 
>    and channel status are constants during data transmit/receive?
> 2) In the case HW saves the user data and channel status in its internal
> 
>    registers, how would the ALSA stack know if any of them changed?
> 3) Is there a bridge application in the ALSA stack? I mean, in case 
>    I would like to capture ICE958 frames and route them to ICE958
> playback 
>    channel.

If you think of cmipci, the hardware doesn't create any IEC958 status
bits for _input_.  What I explained about the SPDIF output.


Takashi

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