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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 AB334C4360F for ; Wed, 20 Feb 2019 12:51:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6FD1920C01 for ; Wed, 20 Feb 2019 12:51:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="d+VIgJUL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728102AbfBTMvj (ORCPT ); Wed, 20 Feb 2019 07:51:39 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:59610 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728047AbfBTMvi (ORCPT ); Wed, 20 Feb 2019 07:51:38 -0500 Received: from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 67EF654D; Wed, 20 Feb 2019 13:51:35 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1550667095; bh=HTVjavVTRAijUeBBvsEtc07EuIS49b+9gUvb2KMvQxY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=d+VIgJULxguifHO9j6+JScFznhA8NnffyMgIrCkOwD/5z+hwNYQ4w7tTgOdUVBfX9 fM8bLIZOfelqXUqOAAvj1ahOYn8NlDFebdaapc2cu6ICsR3lNsPnq/2lLyo1a1fF7H PB3fBpzEwU50ggwLgh1z5o+OLhD3oNXMiKb5StTc= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Kieran Bingham Subject: [PATCH yavta 6/7] Support setting control from values stored in a file Date: Wed, 20 Feb 2019 14:51:22 +0200 Message-Id: <20190220125123.9410-7-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190220125123.9410-1-laurent.pinchart@ideasonboard.com> References: <20190220125123.9410-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Signed-off-by: Laurent Pinchart --- yavta.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/yavta.c b/yavta.c index 1490878c6f7e..2d49131a4271 100644 --- a/yavta.c +++ b/yavta.c @@ -1334,6 +1334,31 @@ static int video_parse_control_array(const struct v4l2_query_ext_ctrl *query, __u32 value; for ( ; isspace(*val); ++val) { }; + + if (*val == '<') { + /* Read the control value from the given file. */ + ssize_t size; + int fd; + + val++; + fd = open(val, O_RDONLY); + if (fd < 0) { + printf("unable to open control file `%s'\n", val); + return -EINVAL; + } + + size = read(fd, ctrl->ptr, ctrl->size); + if (size != (ssize_t)ctrl->size) { + printf("error reading control file `%s' (%s)\n", val, + strerror(errno)); + close(fd); + return -EINVAL; + } + + close(fd); + return 0; + } + if (*val++ != '{') return -EINVAL; -- Regards, Laurent Pinchart