From patchwork Thu Apr 22 02:18:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hirokazu Honda X-Patchwork-Id: 12057 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id DCFF8BDB15 for ; Thu, 22 Apr 2021 02:18:22 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 6FEA26885B; Thu, 22 Apr 2021 04:18:22 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="NNZcFXY2"; dkim-atps=neutral Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id ACF4C68849 for ; Thu, 22 Apr 2021 04:18:20 +0200 (CEST) Received: by mail-pl1-x632.google.com with SMTP id v13so9137956ple.9 for ; Wed, 21 Apr 2021 19:18:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=U3RImDmwzVIe880ArB4ZstBuCN+woBU2v98B5nJinbs=; b=NNZcFXY2fCesgiM0SnwpInVh5mwFS2gjHWxqrdkrj2H6qc+5j4GxlJujlEYNVgobvh qLjx+rzSTlmKJJ/Hl9D8MwvvU6BFsFiPXrdiAjGALLqkti1AKSXsKGlTft70KsVrq8bu KpYK4RDjaCbvwdQ5+swrGVnWiCS5O8W1G4s8o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=U3RImDmwzVIe880ArB4ZstBuCN+woBU2v98B5nJinbs=; b=R7ZPS5rLXsrliczxUQzpjOl1xVQWsDMCLj/gjZYo4TXSgKMWq+gnz9B/G3/dYn/Jyp p2CvC82J91gqXl/lFRvLdc0xNLR3eyQlIwehCgPaPpK81NzgrUr3HKqe7aGA9tBOtR5M RJ2iU3lUVryNHhWoBqwXP1aAD5eT42jfJ/VtpGcAef2yS/QfkSou3JOCnJyMeOIJPVid rUde3TcAak9/0jbKQu6UdPPoiLuE9R3mUqye1qi1bSlGzyL6GOk6C2ClKQjsOAQ+SlFF TTVhZ65Qn1G0wEQJsbrkh2y2KnujEJtBpYZPzXje2gs/rjTA87NQLpfnvg+sfOpxlhEW UvWg== X-Gm-Message-State: AOAM532gTeWAa38HUh4lvDne58QWBjgQphEUUt73e3BKSTbDWlammMf5 +je0Ge1LhhWKMGy1mms7vM0cglfoacDGuA== X-Google-Smtp-Source: ABdhPJzyYTJwNVR393mld/KHyAqPHPOT9ILArBBwSA1H7aZB1wuyH6ycwb9GX6NxONRJkvW1vRabKw== X-Received: by 2002:a17:90a:9511:: with SMTP id t17mr14928444pjo.235.1619057899008; Wed, 21 Apr 2021 19:18:19 -0700 (PDT) Received: from hiroh2.tok.corp.google.com ([2401:fa00:8f:2:f88:d5a0:ebc4:5b76]) by smtp.gmail.com with ESMTPSA id lt11sm3352480pjb.23.2021.04.21.19.18.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Apr 2021 19:18:18 -0700 (PDT) From: Hirokazu Honda To: libcamera-devel@lists.libcamera.org Date: Thu, 22 Apr 2021 11:18:08 +0900 Message-Id: <20210422021809.520675-4-hiroh@chromium.org> X-Mailer: git-send-email 2.31.1.368.gbe11c130af-goog In-Reply-To: <20210422021809.520675-1-hiroh@chromium.org> References: <20210422021809.520675-1-hiroh@chromium.org> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v4 3/4] libcamera: V4L2Device: Use std::vector for v4l2_ext_control in setControls() X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" The original code uses Variable-Length-Array, which is not officially supported in C++. This replaces the array with std::vector. Signed-off-by: Hirokazu Honda Reviewed-by: Kieran Bingham Reviewed-by: Laurent Pinchart --- src/libcamera/v4l2_device.cpp | 39 ++++++++++++++++------------------- 1 file changed, 18 insertions(+), 21 deletions(-) diff --git a/src/libcamera/v4l2_device.cpp b/src/libcamera/v4l2_device.cpp index 617e6ec9..9f71bf0e 100644 --- a/src/libcamera/v4l2_device.cpp +++ b/src/libcamera/v4l2_device.cpp @@ -273,30 +273,28 @@ ControlList V4L2Device::getControls(const std::vector &ids) */ int V4L2Device::setControls(ControlList *ctrls) { - unsigned int count = ctrls->size(); - if (count == 0) + if (ctrls->empty()) return 0; - struct v4l2_ext_control v4l2Ctrls[count]; - memset(v4l2Ctrls, 0, sizeof(v4l2Ctrls)); + std::vector v4l2Ctrls(ctrls->size()); + memset(v4l2Ctrls.data(), 0, sizeof(v4l2_ext_control) * ctrls->size()); - unsigned int i = 0; - for (auto &ctrl : *ctrls) { - unsigned int id = ctrl.first; + for (auto [ctrl, i] = std::pair(ctrls->begin(), 0u); i < ctrls->size(); ctrl++, i++) { + const unsigned int id = ctrl->first; const auto iter = controls_.find(id); if (iter == controls_.end()) { LOG(V4L2, Error) << "Control " << utils::hex(id) << " not found"; return -EINVAL; } - - v4l2Ctrls[i].id = id; + v4l2_ext_control &v4l2Ctrl = v4l2Ctrls[i]; + v4l2Ctrl.id = id; /* Set the v4l2_ext_control value for the write operation. */ - ControlValue &value = ctrl.second; + ControlValue &value = ctrl->second; switch (iter->first->type()) { case ControlTypeInteger64: - v4l2Ctrls[i].value64 = value.get(); + v4l2Ctrl.value64 = value.get(); break; case ControlTypeByte: { @@ -308,32 +306,30 @@ int V4L2Device::setControls(ControlList *ctrls) } Span data = value.data(); - v4l2Ctrls[i].p_u8 = data.data(); - v4l2Ctrls[i].size = data.size(); + v4l2Ctrl.p_u8 = data.data(); + v4l2Ctrl.size = data.size(); break; } default: /* \todo To be changed to support strings. */ - v4l2Ctrls[i].value = value.get(); + v4l2Ctrl.value = value.get(); break; } - - i++; } struct v4l2_ext_controls v4l2ExtCtrls = {}; v4l2ExtCtrls.which = V4L2_CTRL_WHICH_CUR_VAL; - v4l2ExtCtrls.controls = v4l2Ctrls; - v4l2ExtCtrls.count = count; + v4l2ExtCtrls.controls = v4l2Ctrls.data(); + v4l2ExtCtrls.count = v4l2Ctrls.size(); int ret = ioctl(VIDIOC_S_EXT_CTRLS, &v4l2ExtCtrls); if (ret) { unsigned int errorIdx = v4l2ExtCtrls.error_idx; /* Generic validation error. */ - if (errorIdx == 0 || errorIdx >= count) { + if (errorIdx == 0 || errorIdx >= v4l2Ctrls.size()) { LOG(V4L2, Error) << "Unable to set controls: " << strerror(-ret); return -EINVAL; @@ -342,11 +338,12 @@ int V4L2Device::setControls(ControlList *ctrls) /* A specific control failed. */ LOG(V4L2, Error) << "Unable to set control " << errorIdx << ": " << strerror(-ret); - count = errorIdx - 1; + + v4l2Ctrls.resize(errorIdx); ret = errorIdx; } - updateControls(ctrls, v4l2Ctrls, count); + updateControls(ctrls, v4l2Ctrls.data(), v4l2Ctrls.size()); return ret; }