From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Jay Fenlason <fenlason@redhat.com>
Subject: Re: Griffin FireWave stream format information
Date: Fri, 28 Feb 2014 22:51:23 +0900 [thread overview]
Message-ID: <5310945B.90805@sakamocchi.jp> (raw)
In-Reply-To: <20140228143454.3abb69fa@stein>
Stefan,
(Feb 28 2014 22:34), Stefan Richter wrote:
> stefan@stein ~ $ firewire-request /dev/fw8 fcp
0x00ffbfc000000000ff0090400202010200
> response: 000: 09 ff bf c0 00 00 00 00 ff 00 90 40 02 02 01 02
...........@....
> response: 010: 00 .
> stefan@stein ~ $ firewire-request /dev/fw8 fcp 0x01ffbfc000000000ffffffff
> response: 000: 0c ff bf c0 00 00 00 00 ff 00 90 40 02 02 01 02
...........@....
> response: 010: 00
>...
OK. Now we get to know how to change modes from 5.1ch surround sound to
'Dolby Pro Logic II' mode.
(Feb 28 2014 22:34), Stefan Richter wrote:
> Nope, it is only
> 0c ff bf c0 00 00 00 00 ff 00 90 40 0[2345] 02 01 02 00.
Yes. I made mistakes again. (I'm ashamed...)
> To recover to 5.1ch surround, please execute this command:
> (for 32.0kHz)
> $ firewire-request /dev/fw8 fcp 0x00ffbfc000000000ff0090400202010200
> (for 44.1kHz)
> $ firewire-request /dev/fw8 fcp 0x00ffbfc000000000ff0090400302010200
> (for 48.0kHz)
> $ firewire-request /dev/fw8 fcp 0x00ffbfc000000000ff0090400402010200
> (for 96.0kHz)
> $ firewire-request /dev/fw8 fcp 0x00ffbfc000000000ff0090400502010200
The last two bytes should be 0x0606.
Within this two bytes, the first byte means the number of data channels
and the second byte means type of the data channel. So in FireWave, 6ch
PCM data channel is expressed by 0x0606, 2ch IEC 60958-3 data channel is
expressed by 0x0200.
I'm sorry to trouble you but I request you to try the sequence of
commands with these fixes...
Thanks
Takashi Sakamoto
o-takashi@sakamocchi.jp
next prev parent reply other threads:[~2014-02-28 13:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <530EB782.6090205@sakamocchi.jp>
2014-02-28 9:56 ` Griffin FireWave stream format information Stefan Richter
2014-02-28 11:06 ` Takashi Sakamoto
2014-02-28 13:34 ` Stefan Richter
2014-02-28 13:51 ` Takashi Sakamoto [this message]
2014-02-28 14:09 ` Stefan Richter
2014-02-28 14:39 ` Takashi Sakamoto
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