[alsa-devel] [RFC] [PATCH] firewire-lib: Use IEC 61883-6 compliant labels for Raw Audio/

Takashi Sakamoto o-takashi at sakamocchi.jp
Sat May 31 09:51:52 CEST 2014

(May 31 2014 16:35), Clemens Ladisch wrote:
> Takashi Sakamoto wrote:
>> I don't touch this label issue with my patchset because there is a bit
>> possibility to cause a regression. But now, I have a confidence that
>> this modification is reasonable. In detail, please see an attached patch.
>> According to AM824 in IEC 61883-6:2002, 2 bits in LSB of label for Raw Audio
>> data means Valid Length Code (VBL). Ths value is:
>> - b00 for 24 bits sample (label is 0x40)
>> - b01 for 20 bits sample (label is 0x41)
>> - b10 for 16 bits sample (label is 0x42)
>> But current firewire-lib apply 24 bits label for both of 16/24 bits samples.
>> As long as I investigate with BeBoB/Fireworks and OXFW, all of them have a
>> behaviour to ignore this label
> Same for DICE.

It's nice information for Dice developers.

> Acked-by: Clemens Ladisch <clemens at ladisch.de>


Iwai-san, could you please apply this patch to for-next?


Takashi Sakamoto
o-takashi at sakamocchi.jp

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