From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp3-g21.free.fr ([212.27.42.3]:33640 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936525Ab0B1T1n convert rfc822-to-8bit (ORCPT ); Sun, 28 Feb 2010 14:27:43 -0500 Date: Sun, 28 Feb 2010 20:28:01 +0100 From: Jean-Francois Moine To: =?UTF-8?B?TsOpbWV0aCBNw6FydG9u?= Cc: Hans de Goede , V4L Mailing List Subject: Re: [PATCH 1/3] add feedback LED control Message-ID: <20100228202801.6986cb19@tele> In-Reply-To: <4B8A2158.6020701@freemail.hu> References: <4B8A2158.6020701@freemail.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-media-owner@vger.kernel.org List-ID: On Sun, 28 Feb 2010 08:55:04 +0100 Németh Márton wrote: > On some webcams a feedback LED can be found. This LED usually shows > the state of streaming mode: this is the "Auto" mode. The LED can > be programmed to constantly switched off state (e.g. for power saving > reasons, preview mode) or on state (e.g. the application shows motion > detection or "on-air"). Hi, There may be many LEDs on the webcams. One LED may be used for the streaming state, Some other ones may be used to give more light in dark rooms. One webcam, the microscope 093a:050f, has a top and a bottom lights/illuminators; an other one, the MSI StarCam 370i 0c45:60c0, has an infra-red light. That's why I proposed to have bit fields in the control value to switch on/off each LED. Cheers. -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/