From patchwork Wed May 22 20:39:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 20088 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 C63B8BDE6B for ; Wed, 22 May 2024 20:40:03 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 99D4863499; Wed, 22 May 2024 22:40:00 +0200 (CEST) Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id C8AD26347E for ; Wed, 22 May 2024 22:39:57 +0200 (CEST) Received: from nicolas-tpx395.lan (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nicolas) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 3F348378218D; Wed, 22 May 2024 20:39:57 +0000 (UTC) From: Nicolas Dufresne To: libcamera-devel@lists.libcamera.org Cc: Nicolas Dufresne Subject: [PATCH v1 1/2] gst: Add child proxy support to libcamerasrc Date: Wed, 22 May 2024 16:39:23 -0400 Message-ID: <20240522203924.1111388-2-nicolas@ndufresne.ca> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240522203924.1111388-1-nicolas@ndufresne.ca> References: <20240522203924.1111388-1-nicolas@ndufresne.ca> 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: Nicolas Dufresne The child proxy interface is needed in order to allow setting properties on pad using parse launch syntax. Signed-off-by: Nicolas Dufresne Reviewed-by: Kieran Bingham --- src/gstreamer/gstlibcamerasrc.cpp | 45 +++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-) diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp index 6a95b6af..74b372f3 100644 --- a/src/gstreamer/gstlibcamerasrc.cpp +++ b/src/gstreamer/gstlibcamerasrc.cpp @@ -157,7 +157,12 @@ enum { PROP_AUTO_FOCUS_MODE, }; +static void gst_libcamera_src_child_proxy_init(gpointer g_iface, + gpointer iface_data); + G_DEFINE_TYPE_WITH_CODE(GstLibcameraSrc, gst_libcamera_src, GST_TYPE_ELEMENT, + G_IMPLEMENT_INTERFACE(GST_TYPE_CHILD_PROXY, + gst_libcamera_src_child_proxy_init) GST_DEBUG_CATEGORY_INIT(source_debug, "libcamerasrc", 0, "libcamera Source")) @@ -864,8 +869,10 @@ gst_libcamera_src_init(GstLibcameraSrc *self) g_mutex_init(&state->lock_); - state->srcpads_.push_back(gst_pad_new_from_template(templ, "src")); - gst_element_add_pad(GST_ELEMENT(self), state->srcpads_.back()); + GstPad *pad = gst_pad_new_from_template(templ, "src"); + state->srcpads_.push_back(pad); + gst_element_add_pad(GST_ELEMENT(self), pad); + gst_child_proxy_child_added(GST_CHILD_PROXY(self), G_OBJECT(pad), GST_OBJECT_NAME(pad)); GST_OBJECT_FLAG_SET(self, GST_ELEMENT_FLAG_SOURCE); @@ -896,6 +903,8 @@ gst_libcamera_src_request_new_pad(GstElement *element, GstPadTemplate *templ, return NULL; } + gst_child_proxy_child_added(GST_CHILD_PROXY(self), G_OBJECT(pad), GST_OBJECT_NAME(pad)); + return reinterpret_cast(g_steal_pointer(&pad)); } @@ -904,6 +913,8 @@ gst_libcamera_src_release_pad(GstElement *element, GstPad *pad) { GstLibcameraSrc *self = GST_LIBCAMERA_SRC(element); + gst_child_proxy_child_removed(GST_CHILD_PROXY(self), G_OBJECT(pad), GST_OBJECT_NAME(pad)); + GST_DEBUG_OBJECT(self, "Pad %" GST_PTR_FORMAT " being released", pad); { @@ -964,3 +975,33 @@ gst_libcamera_src_class_init(GstLibcameraSrcClass *klass) G_PARAM_WRITABLE); g_object_class_install_property(object_class, PROP_AUTO_FOCUS_MODE, spec); } + +/* GstChildProxy implementation */ +static GObject * +gst_libcamera_src_child_proxy_get_child_by_index(GstChildProxy * child_proxy, + guint index) +{ + GLibLocker lock(GST_OBJECT(child_proxy)); + GObject *obj = nullptr; + + obj = reinterpret_cast(g_list_nth_data(GST_ELEMENT(child_proxy)->srcpads, index)); + if (obj) + gst_object_ref(obj); + + return obj; +} + +static guint +gst_libcamera_src_child_proxy_get_children_count(GstChildProxy * child_proxy) +{ + GLibLocker lock(GST_OBJECT(child_proxy)); + return GST_ELEMENT_CAST(child_proxy)->numsrcpads; +} + +static void +gst_libcamera_src_child_proxy_init(gpointer g_iface, [[maybe_unused]] gpointer iface_data) +{ + GstChildProxyInterface *iface = reinterpret_cast(g_iface); + iface->get_child_by_index = gst_libcamera_src_child_proxy_get_child_by_index; + iface->get_children_count = gst_libcamera_src_child_proxy_get_children_count; +} From patchwork Wed May 22 20:39:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 20089 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 8B68EBDE6B for ; Wed, 22 May 2024 20:40:07 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 2E9D06349C; Wed, 22 May 2024 22:40:07 +0200 (CEST) Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [IPv6:2a00:1098:ed:100::25]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 088E66349C for ; Wed, 22 May 2024 22:39:58 +0200 (CEST) Received: from nicolas-tpx395.lan (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nicolas) by madrid.collaboradmins.com (Postfix) with ESMTPSA id EF81F3781480; Wed, 22 May 2024 20:39:57 +0000 (UTC) From: Nicolas Dufresne To: libcamera-devel@lists.libcamera.org Cc: Nicolas Dufresne Subject: [PATCH v1 2/2] gst: Document libcamerasrc multi stream usage Date: Wed, 22 May 2024 16:39:24 -0400 Message-ID: <20240522203924.1111388-3-nicolas@ndufresne.ca> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240522203924.1111388-1-nicolas@ndufresne.ca> References: <20240522203924.1111388-1-nicolas@ndufresne.ca> 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: Nicolas Dufresne This adds documentation and an example using gst-launch-1.0. Signed-off-by: Nicolas Dufresne Reviewed-by: Kieran Bingham --- README.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/README.rst b/README.rst index 1da7a3d6..d605182b 100644 --- a/README.rst +++ b/README.rst @@ -178,6 +178,22 @@ Which can be received on another device over the network with: gst-launch-1.0 tcpclientsrc host=$DEVICE_IP port=5000 ! \ multipartdemux ! jpegdec ! autovideosink +The GStreamer element also supports multiple streams. This is achieved by +requesting additionnal source pads. Downstream caps filteris can be used +to choose specific parameters like resolution and pixel format. The pad +property ``stream-role`` can be used to select a role. + +The following example displayis a 640x480 view finder while streamiing JPEG +encoded 800x600 video. You can use the receiver pipleine above to view the +remote stream from another device. + +.. code:: + + gst-launch-1.0 libcamerasrc name=cs src::stream-role=view-finder src_0::stream-role=video-recording \ + cs.src ! queue ! video/x-raw,width=640,height=480 ! videoconvert ! autovideosink \ + cs.src_0 ! queue ! video/x-raw,width=800,height=600 ! videoconvert ! \ + jpegenc ! multipartmux ! tcpserversink host=0.0.0.0 port=5000 + .. section-end-getting-started Troubleshooting