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Subject: Re: [PATCH v1] virtio-sound: add latency_bytes definition
On Mon, Dec 11, 2023 at 11:51:56AM +0100, Matias Ezequiel Vara Larsen wrote: > This commit aims at providing a better definition of latency_bytes. To > do so, this commit defines latency_bytes as is defined in Crosvm. > > Signed-off-by: Matias Ezequiel Vara Larsen <mvaralar@redhat.com> > --- > Changelog: > v0 -> v1: > * specify that the delay is due to the device implementation. > --- > device-types/sound/description.tex | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/device-types/sound/description.tex b/device-types/sound/description.tex > index 54c9c8e..a138e5b 100644 > --- a/device-types/sound/description.tex > +++ b/device-types/sound/description.tex > @@ -694,7 +694,10 @@ \subsubsection{PCM I/O Messages}\label{sec:Device Types / Sound Device / Device > \begin{description} > \item[\field{status}] contains VIRTIO_SND_S_OK if an operation is successful, > and VIRTIO_SND_S_IO_ERR otherwise. > -\item[\field{latency_bytes}] indicates the current device latency. > +\item[\field{latency_bytes}] indicates the current additional delay caused by > +the device's implementation. For playback, this is the amount of bytes that > +must be consumed before the current request can be played. For capture, this is > +the latency in terms of bytes that the capture buffer was recorded. > \end{description} > > Since all buffers in the queue (with one exception) should be of the size > -- > 2.41.0 > Ping @Anton, thanks. Matias
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