From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: RawMIDI behaviour with MidiFace 4x4 Date: Tue, 10 Mar 2015 09:02:46 +0100 Message-ID: <54FEA526.10708@ladisch.de> References: <6A72E9C91650BD49A6D9B305755BC04C42D801FA@mbs1.ad.jyu.fi>, <54FD5D4C.3040204@ladisch.de> <6A72E9C91650BD49A6D9B305755BC04C42D8067A@mbs1.ad.jyu.fi>, <54FE14F4.9070704@ladisch.de> <6A72E9C91650BD49A6D9B305755BC04C42D80787@mbs1.ad.jyu.fi> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from dehamd003.servertools24.de (dehamd003.servertools24.de [31.47.254.18]) by alsa0.perex.cz (Postfix) with ESMTP id 7FE17261546 for ; Tue, 10 Mar 2015 09:02:48 +0100 (CET) In-Reply-To: <6A72E9C91650BD49A6D9B305755BC04C42D80787@mbs1.ad.jyu.fi> 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: "Kalvas, Taneli" , "alsa-devel@alsa-project.org" List-Id: alsa-devel@alsa-project.org Kalvas, Taneli wrote: > This is a common problem with many devices across several brands of > devices and influences not only Linux but also other systems (see for > example a list by wabbiguy at http://forum.highlyliquid.com/archive/index.php/t-500.html). These devices use different firmwares and drivers, and as far as I know, work flawlessly in Linux. This appears to be a problem with the Windows MIDI framework. (Apparently, it behaves like the ALSA sequencer, i.e., drops data when its internal buffer overflows; there is no blocking API like snd_rawmidi_*.) > What do you think about a possibility for a customized driver for this > class of hardware (I mean usb compliant midi interfaces with broken > output ring buffer)? Such a customization would be possible. But it's unlikely that I will find time in the near future. Regards, Clemens