Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751238AbaLPO1t (ORCPT ); Tue, 16 Dec 2014 09:27:49 -0500 Received: from mail-ob0-f170.google.com ([209.85.214.170]:45788 "EHLO mail-ob0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750902AbaLPO1s convert rfc822-to-8bit (ORCPT ); Tue, 16 Dec 2014 09:27:48 -0500 MIME-Version: 1.0 In-Reply-To: <54903E88.2070701@collabora.com> References: <548F272E.3040808@gmail.com> <548F2DD6.70805@collabora.com> <1418736635.3374.64.camel@pengutronix.de> <54903E88.2070701@collabora.com> From: Jean-Michel Hautbois Date: Tue, 16 Dec 2014 15:27:32 +0100 X-Google-Sender-Auth: E_IPlb1RfV52WX0Y1h6g5IWIKHc Message-ID: Subject: Re: i.MX6 CSC and scaler To: Nicolas Dufresne Cc: Philipp Zabel , Steve Longerbeam , linux-kernel , =?UTF-8?B?RnLDqWTDqXJpYyBTdXJlYXU=?= , Fabio Estevam Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, 2014-12-16 15:15 GMT+01:00 Nicolas Dufresne : > > Le 2014-12-16 08:30, Philipp Zabel a écrit : >> >> For the IPU IC mem2mem scaler/CSC, v4l2transform with scaling capability >> would be the perfect fit > > Thanks you for clarifying. Jean-Michel, are you going to work on this ? If > so, feel free to contact me directly for pointers. You'll find me as stormer > on IRC freenode on both #v4l2 and #gstreamer. Well, yes, we are going to work on it, but first we need to have Steve's module probed. It seems to be using DT, but figuring out how to use it properly. > What would need to be done: > a) Import scaler negotiation code from videoscale element, and merge it into > v4l2transform negotiation. It is likely that wtay (Wim Tayman) have some > code already for you, has on the SW side he is currently working on merging > videoscale and videoconvert together as it's faster this way. OK, so better to go on #gstreamer and talk together with Wim of this. > b) Complete the handling of G_CROP (if required add G_SELECTION). Most HW > scaler will allocate aligned buffers, but can reach a 1 or 2 pixels > precision through CROP or SELECTION. Have you already started something about that ? JM -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/