{"id":10817,"url":"https://patchwork.libcamera.org/api/patches/10817/?format=json","web_url":"https://patchwork.libcamera.org/patch/10817/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20210105190522.682324-4-jacopo@jmondi.org>","date":"2021-01-05T19:05:13","name":"[libcamera-devel,03/12] libcamera: ipu3: Register Exposure control","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"78a3e85ac4abef9c0208a27730891d1d7867dbde","submitter":{"id":3,"url":"https://patchwork.libcamera.org/api/people/3/?format=json","name":"Jacopo Mondi","email":"jacopo@jmondi.org"},"delegate":{"id":15,"url":"https://patchwork.libcamera.org/api/users/15/?format=json","username":"jmondi","first_name":"Jacopo","last_name":"Mondi","email":"jacopo@jmondi.org"},"mbox":"https://patchwork.libcamera.org/patch/10817/mbox/","series":[{"id":1568,"url":"https://patchwork.libcamera.org/api/series/1568/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=1568","date":"2021-01-05T19:05:10","name":"android: Exposure times + scaler crop + android metadata","version":1,"mbox":"https://patchwork.libcamera.org/series/1568/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/10817/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/10817/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 580D8C0F1A\n\tfor ;\n\tTue, 5 Jan 2021 19:05:18 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7EAC9631B9;\n\tTue, 5 Jan 2021 20:05:16 +0100 (CET)","from relay11.mail.gandi.net (relay11.mail.gandi.net\n\t[217.70.178.231])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id B56576220D\n\tfor ;\n\tTue, 5 Jan 2021 20:05:14 +0100 (CET)","from uno.lan (2-224-242-101.ip172.fastwebnet.it [2.224.242.101])\n\t(Authenticated sender: jacopo@jmondi.org)\n\tby relay11.mail.gandi.net (Postfix) with ESMTPSA id 7D352100003\n\tfor ;\n\tTue, 5 Jan 2021 19:05:14 +0000 (UTC)"],"From":"Jacopo Mondi ","To":"libcamera-devel@lists.libcamera.org","Date":"Tue, 5 Jan 2021 20:05:13 +0100","Message-Id":"<20210105190522.682324-4-jacopo@jmondi.org>","X-Mailer":"git-send-email 2.29.2","In-Reply-To":"<20210105190522.682324-1-jacopo@jmondi.org>","References":"<20210105190522.682324-1-jacopo@jmondi.org>","MIME-Version":"1.0","Subject":"[libcamera-devel] [PATCH 03/12] libcamera: ipu3: Register Exposure\n\tcontrol","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Calculate the controls::Exposure limits at camera registration time\nand register it in the list of camera supported controls.\n\nCache the default exposure value to report it in the request metadata.\n\nSigned-off-by: Jacopo Mondi \n---\n src/libcamera/pipeline/ipu3/ipu3.cpp | 67 ++++++++++++++++++++++++++--\n 1 file changed, 63 insertions(+), 4 deletions(-)","diff":"diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp\nindex f1151733d9fe..879057dab328 100644\n--- a/src/libcamera/pipeline/ipu3/ipu3.cpp\n+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp\n@@ -41,7 +41,7 @@ static constexpr unsigned int IMGU_OUTPUT_HEIGHT_ALIGN = 4;\n static constexpr unsigned int IMGU_OUTPUT_WIDTH_MARGIN = 64;\n static constexpr unsigned int IMGU_OUTPUT_HEIGHT_MARGIN = 32;\n \n-static const ControlInfoMap IPU3Controls = {\n+static const ControlInfoMap::Map IPU3Controls = {\n \t{ &controls::draft::PipelineDepth, ControlInfo(2, 3) },\n };\n \n@@ -49,7 +49,7 @@ class IPU3CameraData : public CameraData\n {\n public:\n \tIPU3CameraData(PipelineHandler *pipe)\n-\t\t: CameraData(pipe)\n+\t\t: CameraData(pipe), exposureTime_(0)\n \t{\n \t}\n \n@@ -62,6 +62,8 @@ public:\n \tStream outStream_;\n \tStream vfStream_;\n \tStream rawStream_;\n+\n+\tint32_t exposureTime_;\n };\n \n class IPU3CameraConfiguration : public CameraConfiguration\n@@ -119,6 +121,7 @@ private:\n \t\t\tPipelineHandler::cameraData(camera));\n \t}\n \n+\tint initControls(IPU3CameraData *data);\n \tint registerCameras();\n \n \tint allocateBuffers(Camera *camera);\n@@ -731,6 +734,60 @@ bool PipelineHandlerIPU3::match(DeviceEnumerator *enumerator)\n \treturn ret == 0;\n }\n \n+/*\n+ * \\brief Initialize the camera controls\n+ * \\param[in] data The camera data\n+ *\n+ * Initialize the camera controls by registering the pipeline handler\n+ * ones along with the controls assembled by inspecting the sensor\n+ * capabilities.\n+ *\n+ * \\return 0 on success or a negative error code for error\n+ */\n+int PipelineHandlerIPU3::initControls(IPU3CameraData *data)\n+{\n+\tconst CameraSensor *sensor = data->cio2_.sensor();\n+\tCameraSensorInfo sensorInfo{};\n+\n+\tint ret = sensor->sensorInfo(&sensorInfo);\n+\tif (ret)\n+\t\treturn ret;\n+\n+\tControlInfoMap::Map controls = IPU3Controls;\n+\n+\t/*\n+\t * Compute exposure time limits.\n+\t *\n+\t * \\todo The exposure limits depend on the sensor configuration.\n+\t * Initialize the control using the line lenght and pixel rate of the\n+\t * current configurtion, as reported by the CameraSensorInfo. Use the\n+\t * V4L2_CID_EXPOSURE control to get exposure min and max and convert it\n+\t * from lines into micro-seconds.\n+\t */\n+\tfloat pixelRate = sensorInfo.pixelRate / 1e6f;\n+\tconst ControlInfoMap &sensorControls = sensor->controls();\n+\tconst ControlInfo &v4l2Exposure = sensorControls.find(V4L2_CID_EXPOSURE)->second;\n+\tint32_t minExposure = v4l2Exposure.min().get()\n+\t\t\t * sensorInfo.lineLength / pixelRate;\n+\tint32_t maxExposure = v4l2Exposure.max().get()\n+\t\t\t * sensorInfo.lineLength / pixelRate;\n+\tint32_t defExposure = v4l2Exposure.def().get()\n+\t\t\t * sensorInfo.lineLength / pixelRate;\n+\n+\t/*\n+\t * \\todo Report the actual exposure time, use the default for the\n+\t * moment.\n+\t */\n+\tdata->exposureTime_ = defExposure;\n+\n+\tcontrols[&controls::ExposureTime] = ControlInfo(minExposure, maxExposure,\n+\t\t\t\t\t\t\tdefExposure);\n+\n+\tdata->controlInfo_ = std::move(controls);\n+\n+\treturn 0;\n+}\n+\n /**\n * \\brief Initialise ImgU and CIO2 devices associated with cameras\n *\n@@ -776,8 +833,9 @@ int PipelineHandlerIPU3::registerCameras()\n \t\t/* Initialize the camera properties. */\n \t\tdata->properties_ = cio2->sensor()->properties();\n \n-\t\t/* Initialze the camera controls. */\n-\t\tdata->controlInfo_ = IPU3Controls;\n+\t\tret = initControls(data.get());\n+\t\tif (ret)\n+\t\t\tcontinue;\n \n \t\t/**\n \t\t * \\todo Dynamically assign ImgU and output devices to each\n@@ -842,6 +900,7 @@ void IPU3CameraData::imguOutputBufferReady(FrameBuffer *buffer)\n \n \t/* Mark the request as complete. */\n \trequest->metadata().set(controls::draft::PipelineDepth, 3);\n+\trequest->metadata().set(controls::ExposureTime, exposureTime_);\n \tpipe_->completeRequest(request);\n }\n \n","prefixes":["libcamera-devel","03/12"]}