From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Sean M. Pappalardo - D.J. Pegasus" Subject: Re: Help requested: new HSS1394 MIDI back-end Date: Sat, 09 Jun 2012 14:41:05 +0200 Message-ID: <4FD34461.7090405@mixxx.org> References: <94aa86f3-5257-402a-a094-f58fccdeb846@email.android.com> <38538c62-f01e-4743-be92-aea79d61085e@email.android.com> <4FC5AC47.4060606@mixxx.org> <4FC5C9C8.1000604@ladisch.de> <4FC7CDC1.8020606@ladisch.de> <4FD2F324.7070402@mixxx.org> <4FD32E76.3090304@ladisch.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7102164028028979598==" Return-path: Received: from mail-bk0-f51.google.com (mail-bk0-f51.google.com [209.85.214.51]) by alsa0.perex.cz (Postfix) with ESMTP id 7FA9024467 for ; Sat, 9 Jun 2012 14:41:12 +0200 (CEST) Received: by bkcjg15 with SMTP id jg15so2336614bkc.38 for ; Sat, 09 Jun 2012 05:41:12 -0700 (PDT) In-Reply-To: <4FD32E76.3090304@ladisch.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Clemens Ladisch Cc: alsa-devel@alsa-project.org, linux1394-devel@lists.sourceforge.net, ffado-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org This is a cryptographically signed message in MIME format. --===============7102164028028979598== Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms000208040300040505090605" This is a cryptographically signed message in MIME format. --------------ms000208040300040505090605 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable On 06/09/2012 01:07 PM, Clemens Ladisch wrote: >> I just modified Mixxx's SCS.1d script to work with your custom sysex >> messages and tested with your latest patch. The .1d doesn't actually >> work 100% with this since Mixxx never receives some of the standard >> MIDI messages amid all of the sysex ones, and it's much worse when the= >> platter is spinning and sending the tons of messages it does. This >> could be due to PortMIDI's lack of a callback mechanism, forcing Mixxx= >> to poll it every 1ms because it's much more difficult to reproduce the= >> problem using amidi -d. > > That's possible. However, at 4 KB, ALSA's buffer should be big enough > for those messages. Yes, I subsequently found out that it was a bug in Mixxx's PortMIDI=20 code. I've corrected that and it works much better now. (Nothing like a=20 demanding device to ferret out bugs, eh?) >> As soon as I start the JACK server to handle the audio interface on >> the SCS.1m, the ALSA driver stops sending MIDI for that device unless >> I stop JACK and power-cycle the device. Its last words are: >> F0 00 01 60 48 53 53 0F 03 00 03 00 00 0B 01 F7 > > This is a ping response (tag F3). Apparently, Jack's FFADO driver > reinitializes the device and registers its own address for received > packets. Since it does _not_ handle MIDI messages, it really should > not do this. I think the test-scs program uses JACK-MIDI, so that might be why. But=20 test-scs is obsoleted by your driver. I'm CC'ing the FFADO-devel list so = they can take a look. Sincerely, Sean M. Pappalardo "D.J. Pegasus" Mixxx Developer - Controller Specialist --------------ms000208040300040505090605 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIINtjCC BjQwggQcoAMCAQICASAwDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNp Z25pbmcxKTAnBgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3 MTAyNDIxMDI1NVoXDTE3MTAyNDIxMDI1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1T dGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu aW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAyIFByaW1hcnkgSW50ZXJtZWRpYXRlIENs aWVudCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMsohUWcASz7GfKrpTOM KqANy9BV7V0igWdGxA8IU77L3aTxErQ+fcxtDYZ36Z6GH0YFn7fq5RADteP0AYzrCA+EQTfi 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