From patchwork Mon Mar 3 13:42:33 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= X-Patchwork-Id: 22902 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 9A8BAC3257 for ; Mon, 3 Mar 2025 13:42:45 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 7423D68823; Mon, 3 Mar 2025 14:42:41 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="JGwMN7RW"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id C22D368777 for ; Mon, 3 Mar 2025 14:42:38 +0100 (CET) Received: from pb-laptop.local (185.221.143.4.nat.pool.zt.hu [185.221.143.4]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4B9AB8DB for ; Mon, 3 Mar 2025 14:41:07 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1741009267; bh=yCkkRz99Dyyu3/Hsic6OpQXgGnpJb6tTK447ziHbVrY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=JGwMN7RWKtCzOFe9X+9myt2iYVNlyKiy51FoF7t+WJ6G2hVlAoLINgP1B1klC4mJP Xy6SmaC18/xswE4LkJ2MlZ+dstaXXKykSL0mnWg9vR4PO5jejTo9HlqMxPzPG9+dW+ dqixPGy5BmrUYRSReUNtkXzogsorTBjUv0ydEo/0= From: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= To: libcamera-devel@lists.libcamera.org Subject: [PATCH v3 1/2] libcamera: pipeline: uvcvideo: Fix `ExposureTimeMode` control setup Date: Mon, 3 Mar 2025 14:42:33 +0100 Message-ID: <20250303134234.699293-2-barnabas.pocze@ideasonboard.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250303134234.699293-1-barnabas.pocze@ideasonboard.com> References: <20250303134234.699293-1-barnabas.pocze@ideasonboard.com> MIME-Version: 1.0 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" `ControlInfo(Span{...})` calls the incorrect constructor of `ControlInfo`. The intended constructor to be called is `ControlInfo(Span, ...)` however that is not called because a span of `const int32_t` is passed. Instead, the constructor `ControlInfo(const ControlValue &min, const ControlValue &max, ...)` will be called. Furthermore, since `values.back()` is used, only the last element of the array is actually set. To fix this, convert the array to contain `ControlValue` objects and use a separate variable to keep track of which element to set next. For each of `ExposureTimeMode{Auto,Manual}` save the V4L2 control value that is to be used when the libcamera control is set. Fixes: bad8d591f8acfa ("libcamera: uvcvideo: Register ExposureTimeMode control") Signed-off-by: Barnabás Pőcze Reviewed-by: Jacopo Mondi Reviewed-by: Jacopo Mondi --- src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 61 ++++++++++++++------ 1 file changed, 42 insertions(+), 19 deletions(-) diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp index 7470b5627..a6cc37366 100644 --- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -56,6 +57,9 @@ public: Stream stream_; std::map> formats_; + std::optional autoExposureMode_; + std::optional manualExposureMode_; + private: bool generateId(); @@ -723,25 +727,44 @@ void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info, * ExposureTimeModeManual = { V4L2_EXPOSURE_MANUAL, * V4L2_EXPOSURE_SHUTTER_PRIORITY } */ - std::array values{}; - - auto it = std::find_if(v4l2Values.begin(), v4l2Values.end(), - [&](const ControlValue &val) { - return (val.get() == V4L2_EXPOSURE_APERTURE_PRIORITY || - val.get() == V4L2_EXPOSURE_AUTO) ? true : false; - }); - if (it != v4l2Values.end()) - values.back() = static_cast(controls::ExposureTimeModeAuto); - - it = std::find_if(v4l2Values.begin(), v4l2Values.end(), - [&](const ControlValue &val) { - return (val.get() == V4L2_EXPOSURE_SHUTTER_PRIORITY || - val.get() == V4L2_EXPOSURE_MANUAL) ? true : false; - }); - if (it != v4l2Values.end()) - values.back() = static_cast(controls::ExposureTimeModeManual); - - info = ControlInfo{Span{values}, values[0]}; + + std::bitset< + std::max(V4L2_EXPOSURE_AUTO, + std::max(V4L2_EXPOSURE_APERTURE_PRIORITY, + std::max(V4L2_EXPOSURE_MANUAL, + V4L2_EXPOSURE_SHUTTER_PRIORITY))) + 1 + > exposureModes; + + for (const ControlValue &value : v4l2Values) { + auto x = value.get(); + + if (0 <= x && static_cast(x) < exposureModes.size()) + exposureModes[x] = true; + } + + if (exposureModes[V4L2_EXPOSURE_AUTO]) + autoExposureMode_ = V4L2_EXPOSURE_AUTO; + else if (exposureModes[V4L2_EXPOSURE_APERTURE_PRIORITY]) + autoExposureMode_ = V4L2_EXPOSURE_APERTURE_PRIORITY; + + if (exposureModes[V4L2_EXPOSURE_MANUAL]) + manualExposureMode_ = V4L2_EXPOSURE_MANUAL; + else if (exposureModes[V4L2_EXPOSURE_SHUTTER_PRIORITY]) + manualExposureMode_ = V4L2_EXPOSURE_SHUTTER_PRIORITY; + + std::array values; + std::size_t count = 0; + + if (autoExposureMode_) + values[count++] = controls::ExposureTimeModeAuto; + + if (manualExposureMode_) + values[count++] = controls::ExposureTimeModeManual; + + if (count == 0) + return; + + info = ControlInfo{ Span{ values.data(), count }, values[0] }; break; } case V4L2_CID_EXPOSURE_ABSOLUTE: