From patchwork Thu Jan 9 00:09:33 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paul Elder X-Patchwork-Id: 22476 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 85DC9C326B for ; Thu, 9 Jan 2025 00:10:05 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 00BDE6851C; Thu, 9 Jan 2025 01:10:05 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="etClc2Zt"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id F250268506 for ; Thu, 9 Jan 2025 01:09:59 +0100 (CET) Received: from pyrite.hamster-moth.ts.net (unknown [IPv6:2604:2d80:9e93:ad00:3d82:7e4f:ab9b:8a]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id ED681CE6; Thu, 9 Jan 2025 01:09:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1736381346; bh=1hxF9pkFGiPjQjZWnPUEqZ49YEmNr9MqCbryJwIfgeE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=etClc2Ztn9RyJgDi5sDlqUITkW0oi5A+Ufv/o0PoNsa7EYQHFhVgdK0eD9Kbebbmm /BRbwvPzvuUO9Ju5OPN3c7u4dzoJ8vza8+ykSOiKLJRrgolUIBp/9JqWJmfNvhXr/k Mrcaj37NEa/sLXMtcddALJWQYAMv/EuYIbsSqjqU= From: Paul Elder To: libcamera-devel@lists.libcamera.org Cc: Jacopo Mondi , laurent.pinchart@ideasonboard.com, stefan.klug@ideasonboard.com, Paul Elder Subject: [PATCH v6 03/12] libcamera: uvcvideo: Register ExposureTimeMode control Date: Wed, 8 Jan 2025 18:09:33 -0600 Message-Id: <20250109000942.1616565-4-paul.elder@ideasonboard.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250109000942.1616565-1-paul.elder@ideasonboard.com> References: <20250109000942.1616565-1-paul.elder@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" From: Jacopo Mondi Port the UVC pipeline handler to use the new ExposureTimeMode control when processing Camera controls in place of the AeEnable control. The V4L2_CID_EXPOSURE_AUTO control allows 4 possible values, which map to ExposureTimeModeAuto and ExposureTimeModeManual. Signed-off-by: Jacopo Mondi Signed-off-by: Paul Elder Reviewed-by: Paul Elder Reviewed-by: Laurent Pinchart --- No change in v6 Changes in v5: - remove unnecessary intermediate variable No change in v3 --- src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 53 ++++++++++++++++++-- 1 file changed, 48 insertions(+), 5 deletions(-) diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp index 8c2c6baf3..7470b5627 100644 --- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp @@ -298,7 +298,7 @@ int PipelineHandlerUVC::processControl(ControlList *controls, unsigned int id, cid = V4L2_CID_CONTRAST; else if (id == controls::Saturation) cid = V4L2_CID_SATURATION; - else if (id == controls::AeEnable) + else if (id == controls::ExposureTimeMode) cid = V4L2_CID_EXPOSURE_AUTO; else if (id == controls::ExposureTime) cid = V4L2_CID_EXPOSURE_ABSOLUTE; @@ -647,7 +647,7 @@ void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info, id = &controls::Saturation; break; case V4L2_CID_EXPOSURE_AUTO: - id = &controls::AeEnable; + id = &controls::ExposureTimeMode; break; case V4L2_CID_EXPOSURE_ABSOLUTE: id = &controls::ExposureTime; @@ -660,6 +660,7 @@ void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info, } /* Map the control info. */ + const std::vector &v4l2Values = v4l2Info.values(); int32_t min = v4l2Info.min().get(); int32_t max = v4l2Info.max().get(); int32_t def = v4l2Info.def().get(); @@ -697,10 +698,52 @@ void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info, }; break; - case V4L2_CID_EXPOSURE_AUTO: - info = ControlInfo{ false, true, true }; + case V4L2_CID_EXPOSURE_AUTO: { + /* + * From the V4L2_CID_EXPOSURE_AUTO documentation: + * + * ------------------------------------------------------------ + * V4L2_EXPOSURE_AUTO: + * Automatic exposure time, automatic iris aperture. + * + * V4L2_EXPOSURE_MANUAL: + * Manual exposure time, manual iris. + * + * V4L2_EXPOSURE_SHUTTER_PRIORITY: + * Manual exposure time, auto iris. + * + * V4L2_EXPOSURE_APERTURE_PRIORITY: + * Auto exposure time, manual iris. + *------------------------------------------------------------- + * + * ExposureTimeModeAuto = { V4L2_EXPOSURE_AUTO, + * V4L2_EXPOSURE_APERTURE_PRIORITY } + * + * + * 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]}; break; - + } case V4L2_CID_EXPOSURE_ABSOLUTE: /* * ExposureTime is in units of 1 µs, and UVC expects