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Message-ID: <s5ho9f74556.wl-tiwai@suse.de>
Date: Mon, 16 Jul 2018 16:38:45 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Jorge Sanjuan <jorge.sanjuan@...ethink.co.uk>
Cc: alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] UAC3: Add Selectors and Processing Units.
On Wed, 11 Jul 2018 14:37:50 +0200,
Jorge Sanjuan wrote:
>
> This patchset is motivated by the addition of Multi Function
> Processing Units (MFPU) to an UAC3 topology where there could be
> signal processing algorithims applied to the audio signal.
>
> The MFPUs themself don't provide any useful control, they offer a
> description of what algorithims it supports and it is for Selector Units
> to take the bypass control of the dry (unprocessed) signal and the modified
> one. Moreover, Up/Down mixers may be needed in this topologies to control
> which outputs of the logical output cluster from the MFPU are to be passed
> as the final modified audio signal.
>
> These patches add support for Selector Units and Processing units for UAC3
> and adds a couple fixes that I found while implemeting them:
>
> 1) Defualt naming of the virtual terminals was not accurate due to codes
> overlap between the three UAC standards.
> 2) UAC2 parsing of processing units was using UAC1 controls bitmap.
>
> Based on: next-20180711
>
> Jorge Sanjuan (5):
> ALSA: usb-audio: Add support for Selector Units in UAC3
> ALSA: usb-audio: Processing Unit controls parsing in UAC2
> ALSA: usb-audio: Add support for Processing Units in UAC3
> ALSA: usb-audio: Unify virtual type units type to UAC3 values
> ALSA: usb-audio: Tidy up logic for Processing Unit min/max values
Applied all five patches now. Thanks.
Takashi
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