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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 341A1C3A5A3 for ; Fri, 30 Aug 2019 07:54:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0071D20820 for ; Fri, 30 Aug 2019 07:54:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="kc2lLO40" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727850AbfH3HyF (ORCPT ); Fri, 30 Aug 2019 03:54:05 -0400 Received: from mail-ed1-f41.google.com ([209.85.208.41]:44929 "EHLO mail-ed1-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727417AbfH3HyF (ORCPT ); Fri, 30 Aug 2019 03:54:05 -0400 Received: by mail-ed1-f41.google.com with SMTP id a21so6938959edt.11 for ; Fri, 30 Aug 2019 00:54:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=rVKrV2u7Thb8iFKr9dvRhjS7h11FjZztLbIwGqxmSFU=; b=kc2lLO40yHPvMOl1/DBa9a7TBVjclRMnPxsPQI4JGilz3EjCt0d6Y8cNdxeim3j4Pg MnB8CE1HgbKAwTb602xQD1dA9qLXiILrp8YLRInQxKbha74otVzeNO+430RM1s+tyfR/ 79mgUCRvB3SLBkRnhL/aTF4BiAO7dYJLT7YOo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=rVKrV2u7Thb8iFKr9dvRhjS7h11FjZztLbIwGqxmSFU=; b=oaZZSDfndDcuDEVk84yC/OQFOQpyr5QSOUBQ5+4EM+6dOkSQW9WY2XTo4u83c7/sJF Rlu3k+qZRass06xPx5gIrUtnhPllx/g2lMPm3v4kS6Oik7SSojqd+k4DRGnTaLQz7Eet 6BWS4eIHI+kZaDkeMRkAXPUxRO64AU2jlt7INl6AV3EQqm9z4P6bxl8xmfU6STzPtaw/ pa2a+3Zj01s/XDtZ41y9qHO5mZdA0OQhaDX3bcaCMqiFVshn84CD3qBGxj74Nq3LdFZe 33e27zZXkrtC38SuAco978f2GC1qtXAeHvmUQ42UdaBa9cYmXDOzWDJ/SeBY8dqnviDs wsAQ== X-Gm-Message-State: APjAAAVys4VOjYbjdkRxmcoz3tS7UEPu36pBRzsQYnaElf9dYRLHTcdL U53ZszWS0Xa+cY7PsWy5ywQGjGymhiU= X-Google-Smtp-Source: APXvYqxN1gOOuPVzTd1us55ini2/WhJwBYY0QJQC/myv/gxlGZOH8oTahVVe8kOrggaEORRvYXw4FQ== X-Received: by 2002:aa7:df03:: with SMTP id c3mr14082744edy.112.1567151643021; Fri, 30 Aug 2019 00:54:03 -0700 (PDT) Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com. [209.85.221.54]) by smtp.gmail.com with ESMTPSA id s4sm693677ejq.72.2019.08.30.00.54.01 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 30 Aug 2019 00:54:02 -0700 (PDT) Received: by mail-wr1-f54.google.com with SMTP id b16so5934036wrq.9 for ; Fri, 30 Aug 2019 00:54:01 -0700 (PDT) X-Received: by 2002:a05:6000:1082:: with SMTP id y2mr6486774wrw.77.1567151641421; Fri, 30 Aug 2019 00:54:01 -0700 (PDT) MIME-Version: 1.0 References: <010ba9ce-bac9-6f0c-f128-4f163a7d8ea7@xs4all.nl> In-Reply-To: From: Tomasz Figa Date: Fri, 30 Aug 2019 16:53:49 +0900 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [ANN] Topics for a media summit in Lyon in October To: Hans Verkuil Cc: Linux Media Mailing List , Alexandre Courbot , Laurent Pinchart , Jacopo Mondi Content-Type: text/plain; charset="UTF-8" Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On Wed, Aug 28, 2019 at 7:55 PM Hans Verkuil wrote: > > On 8/16/19 10:06 AM, Hans Verkuil wrote: > > 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 can only get a room for Thursday afternoon (2pm-6pm). I'm inclined to take > that room, but if a lot of people who want to come, will already have left > on the Thursday, then there is no point in me reserving this room. > > So if you are unable to attend on Thursday, then please let me know asap! > > If Thursday is no problem, then I wanted to have more informal meetings > somewhere in the conference center during the morning, and after lunch > use the room. > > If Thursday is a no-go, then we will just have to find a place inside > the conference center during the ELCE. Thanks for organizing this! I'm okay with Thursday, but would prefer a day during the conference. Best regards, Tomasz > > Regards, > > Hans > > > > > 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!): > > > > 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 > > >