{"id":26312,"url":"https://patchwork.libcamera.org/api/1.1/patches/26312/?format=json","web_url":"https://patchwork.libcamera.org/patch/26312/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/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":"<20260323092237.3103-2-david.plowman@raspberrypi.com>","date":"2026-03-23T09:02:05","name":"[v1,1/1] gstreamer: Add sensor-config property","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"eb9628ad238153322e210e9b3b8716bee0b3cd76","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/1.1/people/42/?format=json","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/26312/mbox/","series":[{"id":5836,"url":"https://patchwork.libcamera.org/api/1.1/series/5836/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5836","date":"2026-03-23T09:02:04","name":"Add sensor config support to gstreamer","version":1,"mbox":"https://patchwork.libcamera.org/series/5836/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/26312/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/26312/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 99221C32DE\n\tfor ;\n\tMon, 23 Mar 2026 09:22:46 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id EBC9862743;\n\tMon, 23 Mar 2026 10:22:44 +0100 (CET)","from mail-wm1-x334.google.com (mail-wm1-x334.google.com\n\t[IPv6:2a00:1450:4864:20::334])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5D43162737\n\tfor ;\n\tMon, 23 Mar 2026 10:22:42 +0100 (CET)","by mail-wm1-x334.google.com with SMTP id\n\t5b1f17b1804b1-48558d6ef83so24267635e9.3\n\tfor ;\n\tMon, 23 Mar 2026 02:22:42 -0700 (PDT)","from davidp-pi5.pitowers.org\n\t([2a00:1098:3142:1f:88ea:c658:5b20:5e46])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-48703e26408sm278310335e9.11.2026.03.23.02.22.41\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tMon, 23 Mar 2026 02:22:41 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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\n\tMon, 23 Mar 2026 02:22:41 -0700 (PDT)","From":"David Plowman ","To":"libcamera-devel@lists.libcamera.org","Cc":"David Plowman ","Subject":"[PATCH v1 1/1] gstreamer: Add sensor-config property","Date":"Mon, 23 Mar 2026 09:02:05 +0000","Message-ID":"<20260323092237.3103-2-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.47.3","In-Reply-To":"<20260323092237.3103-1-david.plowman@raspberrypi.com>","References":"<20260323092237.3103-1-david.plowman@raspberrypi.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","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","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"The sensor-config property may optionally be specified to give the\noutputSize and bitDepth of the SensorConfiguration that is applied to\nthe camera configuration. For example, use\n\nlibcamerasrc sensor-config=2304x1296/10\n\nto request the 10-bit 2304x1296 mode of a sensor.\n\nAll three parameters, width, height and bit depth, must be present, or\nit will issue a warning and revert to automatic mode selection (as if\nthere were no sensor-config at all).\n\nIf a mode is requested that doesn't exist then camera configuration\nwill fail and the pipeline won't start.\n\nSigned-off-by: David Plowman \n---\n src/gstreamer/gstlibcamerasrc.cpp | 38 +++++++++++++++++++++++++++++++\n 1 file changed, 38 insertions(+)","diff":"diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp\nindex a7241e9b..9eca65d1 100644\n--- a/src/gstreamer/gstlibcamerasrc.cpp\n+++ b/src/gstreamer/gstlibcamerasrc.cpp\n@@ -141,6 +141,7 @@ struct _GstLibcameraSrc {\n \tGstTask *task;\n \n \tgchar *camera_name;\n+\tgchar *sensor_config;\n \n \tstd::atomic pending_eos;\n \n@@ -152,6 +153,7 @@ struct _GstLibcameraSrc {\n enum {\n \tPROP_0,\n \tPROP_CAMERA_NAME,\n+\tPROP_SENSOR_CONFIG,\n \tPROP_LAST\n };\n \n@@ -846,6 +848,23 @@ gst_libcamera_src_task_enter(GstTask *task, [[maybe_unused]] GThread *thread,\n \t}\n \tg_assert(state->config_->size() == state->srcpads_.size());\n \n+\t/* Apply optional sensor configuration. */\n+\tif (self->sensor_config) {\n+\t\tunsigned int w = 0, h = 0, depth = 0;\n+\t\tif (std::sscanf(self->sensor_config, \"%ux%u/%u\", &w, &h, &depth) == 3 && w && h && depth) {\n+\t\t\tSensorConfiguration sensorCfg;\n+\t\t\tsensorCfg.outputSize = Size(w, h);\n+\t\t\tsensorCfg.bitDepth = depth;\n+\t\t\tstate->config_->sensorConfig = sensorCfg;\n+\t\t} else {\n+\t\t\tGST_ELEMENT_WARNING(self, RESOURCE, SETTINGS,\n+\t\t\t\t\t (\"Invalid sensor-config \\\"%s\\\", expected \\\"WIDTHxHEIGHT/DEPTH\\\",\"\n+\t\t\t\t\t \" ignoring\",\n+\t\t\t\t\t self->sensor_config),\n+\t\t\t\t\t (nullptr));\n+\t\t}\n+\t}\n+\n \tif (!gst_libcamera_src_negotiate(self)) {\n \t\tstate->initControls_.clear();\n \t\tGST_ELEMENT_FLOW_ERROR(self, GST_FLOW_NOT_NEGOTIATED);\n@@ -934,6 +953,10 @@ gst_libcamera_src_set_property(GObject *object, guint prop_id,\n \t\tg_free(self->camera_name);\n \t\tself->camera_name = g_value_dup_string(value);\n \t\tbreak;\n+\tcase PROP_SENSOR_CONFIG:\n+\t\tg_free(self->sensor_config);\n+\t\tself->sensor_config = g_value_dup_string(value);\n+\t\tbreak;\n \tdefault:\n \t\tif (!state->controls_.setProperty(prop_id - PROP_LAST, value, pspec))\n \t\t\tG_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);\n@@ -953,6 +976,9 @@ gst_libcamera_src_get_property(GObject *object, guint prop_id, GValue *value,\n \tcase PROP_CAMERA_NAME:\n \t\tg_value_set_string(value, self->camera_name);\n \t\tbreak;\n+\tcase PROP_SENSOR_CONFIG:\n+\t\tg_value_set_string(value, self->sensor_config);\n+\t\tbreak;\n \tdefault:\n \t\tif (!state->controls_.getProperty(prop_id - PROP_LAST, value, pspec))\n \t\t\tG_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);\n@@ -1040,6 +1066,7 @@ gst_libcamera_src_finalize(GObject *object)\n \tg_clear_object(&self->task);\n \tg_mutex_clear(&self->state->lock_);\n \tg_free(self->camera_name);\n+\tg_free(self->sensor_config);\n \tdelete self->state;\n \n \treturn klass->finalize(object);\n@@ -1162,6 +1189,17 @@ gst_libcamera_src_class_init(GstLibcameraSrcClass *klass)\n \t\t\t\t\t\t\t | G_PARAM_STATIC_STRINGS));\n \tg_object_class_install_property(object_class, PROP_CAMERA_NAME, spec);\n \n+\tspec = g_param_spec_string(\"sensor-config\", \"Sensor Config\",\n+\t\t\t\t \"Desired sensor configuration as \\\"WIDTHxHEIGHT/BITDEPTH\\\"\"\n+\t\t\t\t \" (e.g. \\\"2304x1296/10\\\"). Leave unset to let the pipeline\"\n+\t\t\t\t \" negotiate the sensor mode automatically.\",\n+\t\t\t\t nullptr,\n+\t\t\t\t (GParamFlags)(GST_PARAM_MUTABLE_READY\n+\t\t\t\t\t\t | G_PARAM_CONSTRUCT\n+\t\t\t\t\t\t | G_PARAM_READWRITE\n+\t\t\t\t\t\t | G_PARAM_STATIC_STRINGS));\n+\tg_object_class_install_property(object_class, PROP_SENSOR_CONFIG, spec);\n+\n \tGstCameraControls::installProperties(object_class, PROP_LAST);\n }\n \n","prefixes":["v1","1/1"]}