[alsa-devel] Griffin FireWave stream format information

[Takashi Sakamoto]

Stefan,

> $ for n in 2 3 4 5; do echo $n; firewire-request /dev/fw8 fcp 0x00ffbfc000000000ff0090400${n}02010606; sleep 1; firewire-request /dev/fw8 fcp 0x01ffbfc000000000ffffffff; sleep 1; done
> 2
> response: 000: 09 ff bf c0 00 00 00 00 ff 00 90 40 02 02 01 06 ........... at ....
> response: 010: 06                                              .
> response: 000: 0c ff bf c0 00 00 00 00 ff 00 90 40 02 02 01 06 ........... at ....
> response: 010: 06                                              .
> 3
> response: 000: 09 ff bf c0 00 00 00 00 ff 00 90 40 03 02 01 06 ........... at ....
> response: 010: 06                                              .
> response: 000: 0c ff bf c0 00 00 00 00 ff 00 90 40 03 02 01 06 ........... at ....
> response: 010: 06                                              .
> 4
> response: 000: 09 ff bf c0 00 00 00 00 ff 00 90 40 04 02 01 06 ........... at ....
> response: 010: 06                                              .
> response: 000: 0c ff bf c0 00 00 00 00 ff 00 90 40 04 02 01 06 ........... at ....
> response: 010: 06                                              .
> 5
> response: 000: 09 ff bf c0 00 00 00 00 ff 00 90 40 05 02 01 06 ........... at ....
> response: 010: 06                                              .
> response: 000: 0c ff bf c0 00 00 00 00 ff 00 90 40 05 02 01 06 ........... at ....
> response: 010: 06                                              .

Thanks. Now we get to know the way to recover from '2ch IEC 60958-3 
data' mode to '6ch PCM data' mode.

I note that this 'SINGLE' sunfunction of 'AV/C Stream Format 
Information' command can also be used to switch sampling rate instead of 
'AV/C PLUG SIGNAL FORMAT' command (i.e. 0x00ff18009002ffff).


Thanks

Takashi Sakamoto
o-takashi at sakamocchi.jp