From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B13F6C3A59C for ; Fri, 16 Aug 2019 09:37:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8643D2086C for ; Fri, 16 Aug 2019 09:37:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565948253; bh=bcmX63ofIrQGCDUcpYxxcfLgq8qpMWETruAyFByP5eY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=kn2MVsy2Zxzv1PGtyvVLe6wOr9lM4bQpECIaCCDFz+S+pZGiXTIlE7VjmFdh+P2/v jX3a8N+6XSICWggpc+xeWesNlxeGRDPWftJw2BwglvPw59fdbKCgmxi3NrAA1J98I4 pl+lBzPPUKaBGAXy8qXJQAuPnhUGkaQUWsHm7s2U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726989AbfHPJhd (ORCPT ); Fri, 16 Aug 2019 05:37:33 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:38194 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726981AbfHPJhc (ORCPT ); Fri, 16 Aug 2019 05:37:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Subject:Cc:To: From:Date:Sender:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=0F/giW7qzvWYTUL5sbz3szb+iJQC1jLSEQGo39WlHBU=; b=HZrr6j44x3ZUhqRGAU+Gt5m86 ZMbvncD/9+v/l88nqEMvaa1G5dfA1IwFUh4AmiJ8+D/hVZwjlqP/CcZaljhCIwoIyobOScSOT+UmL /A/0yoeqxFiJaDQCHVd3LLYNgHYNk23+jRsQ+Y04FTYLXX2Z3GI65vQ7ckHTCKPNQ4vBZmCS/ZnP+ IMm6cY3RnvM21zTc0Tusl9E7SfSweD8i3EGCmdbitywMsEHmVUWkREsZEzNIhcH1tmrEzuULEyquM qpWAwu8t8/YDL5j+NPrTtyTRUkLHoHlM1xfCM+s7pMxlmvGcl5iV3vc7oUjLjLqe1iwX9bR9ZponR eIwMAeLYg==; Received: from [191.249.103.100] (helo=coco.lan) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hyYfr-0003f7-8D; Fri, 16 Aug 2019 09:37:31 +0000 Date: Fri, 16 Aug 2019 06:37:27 -0300 From: Mauro Carvalho Chehab To: Hans Verkuil Cc: Linux Media Mailing List , Alexandre Courbot , Laurent Pinchart , Jacopo Mondi , Tomasz Figa Subject: Re: [ANN] Topics for a media summit in Lyon in October Message-ID: <20190816063727.1d86cd29@coco.lan> In-Reply-To: <010ba9ce-bac9-6f0c-f128-4f163a7d8ea7@xs4all.nl> References: <010ba9ce-bac9-6f0c-f128-4f163a7d8ea7@xs4all.nl> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Em Fri, 16 Aug 2019 10:06:30 +0200 Hans Verkuil escreveu: > Rather then discussing topics for a meeting under the subject 'Lisbon' > let's start a new thread referring to the right place :-) > > I will try to organize a room, either during the ELCE or (if that doesn't > work) perhaps on the Thursday afterwards. If that's going to be a problem > for someone, please let me know. > > I do need to know how many people I can expect. I have the following > confirmed attendees (and please reply if you are not listed!): I'm not planning to go to ELCE this year. Regards, Mauro > > Alexandre Courbot > Tomasz Figa > Jacopo Mondi > Laurent Pinchart > Hans Verkuil > > I know there were more who mentioned on irc that they would attend, > but it is easier to keep track if I have it in an email. > > Topics posted under the previous thread: > > Tomasz: > > I would want to discuss various v4l2_buffer improvements, e.g. > - DMA-buf import with plane offsets, > - unifying the buffer structs for M and non-M formats, > - ability to import different FDs with offsets for non-M formats if the > layout matches driver expectations, etc. > > Besides that, I would be interested in the general idea on handling > complex cameras in the Linux kernel in spite of the remaining V4L2 > limitations, e.g. > - combinatorial explosion of /dev/video nodes, > - significant ioctl overhead, > - huge amount of historical legacy making the driver and userspace > implementations overly difficult and prone to repetitive mistakes, > - the above also limiting the flexibility of the API - formats, frame > rates, etc. set using distinct APIs, not covered by Request API, with > non-failure "negotiation hell", etc. > - lack of fences, etc. > > Jacopo: > > Apart from discussing libcamera and hope we could kickstart a review of > its API, I would like to re-start discussing multiplexed stream support, > but that would require Sakari to be there, something I'm not certain > about. Sakari? > > Alexandre: > > If Collabora/Bootlin is there, I'd certainly want to discuss stateless > codecs, in particular m2m codec helpers and finalize the specification > in general. > > Regards, > > Hans Thanks, Mauro