linux-kernel - Re: [PATCH] ALSA: pcm: fix ELD constraints for (E)AC3, DTS(-HD) and MLP formats

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Message-ID: <87pm5kvt35.wl-tiwai@suse.de>
Date:   Sun, 25 Jun 2023 10:34:06 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Matthias Reichl <hias@...us.com>
Cc:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Dom Cobley <popcornmix@...il.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: pcm: fix ELD constraints for (E)AC3, DTS(-HD) and MLP formats

On Sat, 24 Jun 2023 18:52:16 +0200,
Matthias Reichl wrote:
> 
> The SADs of compressed formats contain the channel and sample rate
> info of the audio data inside the compressed stream, but when
> building constraints we must use the rates and channels used to
> transport the compressed streams.
> 
> eg 48kHz 6ch EAC3 needs to be transmitted as a 2ch 192kHz stream.
> 
> This patch fixes the constraints for the common AC3 and DTS formats,
> the constraints for the less common MPEG, DSD etc formats are copied
> directly from the info in the SADs as before as I don't have the specs
> and equipment to test those.
> 
> Signed-off-by: Matthias Reichl <hias@...us.com>

Thanks, applied now.


Takashi