From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raymond Yau Subject: Re: Master Plan on rewinding Date: Sat, 13 Sep 2014 16:57:06 +0800 Message-ID: References: <540C76E0.9050808@gmail.com> <541132F2.6040201@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qa0-f46.google.com (mail-qa0-f46.google.com [209.85.216.46]) by alsa0.perex.cz (Postfix) with ESMTP id 96BEC265E1D for ; Sat, 13 Sep 2014 10:57:07 +0200 (CEST) Received: by mail-qa0-f46.google.com with SMTP id k15so1845043qaq.33 for ; Sat, 13 Sep 2014 01:57:06 -0700 (PDT) In-Reply-To: <541132F2.6040201@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: "Alexander E. Patrakov" Cc: Takashi Iwai , ALSA Development Mailing List , David Henningsson , Takashi Sakamoto List-Id: alsa-devel@alsa-project.org >> >> > >> > On my desktop PC, on snd-hda-intel with analog outputs for S16LE >> stereo, the granularity is 32 bytes (= 8 samples), and I get the pointer >> granularity of 64 bytes (=16 samples) over HDMI. The minimum period size >> is 32 samples in both cases. >> >> Do you mean hda-Intel does not support arbritray period size when you >> say the granularity is 32 bytes ? >> >> However the granularity of the emulated hda sound card inside any VM >> depend on the vm and the backend audio system and sound card > > > The precise meaning is defined here: > > http://mailman.alsa-project.org/pipermail/alsa-devel/2014-May/076475.html Do you mean the different hda controllers may have different granularity ? Do your two hda controllers have different Fifo size ?