Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755836AbcKCNap (ORCPT ); Thu, 3 Nov 2016 09:30:45 -0400 Received: from mail.dogan.ch ([77.109.151.89]:19075 "EHLO mail.dogan.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755124AbcKCNan (ORCPT ); Thu, 3 Nov 2016 09:30:43 -0400 X-Greylist: delayed 541 seconds by postgrey-1.27 at vger.kernel.org; Thu, 03 Nov 2016 09:30:42 EDT Date: Thu, 3 Nov 2016 14:21:34 +0100 From: Attila Kinali To: Matt Ranostay Cc: Hans Verkuil , Linux Media Mailing List , Linux Kernel , Jonathan Cameron , Lars-Peter Clausen , Marek Vasut , Luca Barbato Subject: Re: [RFC] v4l2 support for thermopile devices Message-Id: <20161103142134.4a59dfc34c593391086c0508@kinali.ch> In-Reply-To: References: <767cacf5-5f91-2596-90ef-31358b8e1db9@xs4all.nl> Organization: Geist X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.30; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1203 Lines: 31 On Wed, 2 Nov 2016 23:10:41 -0700 Matt Ranostay wrote: > > So does anyone know of any software that is using V4L2_PIX_FMT_Y12 > currently? Want to test my driver but seems there isn't anything that > uses that format (ffmpeg, mplayer, etc). > > Raw data seems correct but would like to visualize it :). Suspect I'll > need to write a test case application though I was pretty sure that MPlayer supports 12bit greyscale, but I cannot find where it was handled. You can of course pass it to the MPlayer internas as 8bit greyscale, which would be IMGFMT_Y8 or just pass it on as 16bit which would be IMGFMT_Y16_LE (LE = little endian). You can find the internal #defines of the image formats in libmpcodecs/img_format.h and can use https://www.fourcc.org/yuv.php to decode their meaning. The equivalent for libav would be libavutil/pixfmt.h Luca Barbato tells me that adding Y12 support to libav would be easy. Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson