From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:50148 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752672AbZHYVu2 (ORCPT ); Tue, 25 Aug 2009 17:50:28 -0400 Message-ID: <4A945CA4.6010402@iki.fi> Date: Wed, 26 Aug 2009 00:50:28 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Jose Alberto Reguero CC: Cyril Hansen , linux-media@vger.kernel.org Subject: Re: Noisy video with Avermedia AVerTV Digi Volar X HD (AF9015) and mythbuntu 9.04 References: <8527bc070908040016x5d5ad15bk8c2ef6e99678f9e9@mail.gmail.com> <200908041312.52878.jareguero@telefonica.net> <8527bc070908041423p439f2d35y2e31014a10433c80@mail.gmail.com> <200908042348.58148.jareguero@telefonica.net> In-Reply-To: <200908042348.58148.jareguero@telefonica.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 08/05/2009 12:48 AM, Jose Alberto Reguero wrote: >>> I have problems with some hardware, and the buffersize when the >>> buffersize is not multiple of TS_PACKET_SIZE. USB2.0 BULK stream .buffersize is currently 512 and your patch increases it to the 65424. I don't know how this value should be determined. I have set it as small as it is working and usually it is 512 used almost every driver. 511 will not work (if not USB1.1 configured to the endpoints). **** Could someone point out how correct BULK buffersize should be determined? I have thought that many many times... **** Also one other question; if demod is powered off and some IOCTL is coming - like FE_GET_FRONTEND - how that should be handled? v4l-dvb -framework does not look whether or not demod is sleeping and forwards that query to the demod which cannot answer it. regards Antti -- http://palosaari.fi/