From patchwork Thu Feb 27 20:03:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 2882 Return-Path: Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 267D7626BE for ; Thu, 27 Feb 2020 21:04:18 +0100 (CET) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nicolas) with ESMTPSA id 73E832949DF From: Nicolas Dufresne To: libcamera-devel@lists.libcamera.org Date: Thu, 27 Feb 2020 15:03:40 -0500 Message-Id: <20200227200407.490616-1-nicolas.dufresne@collabora.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v2 00/27] GStreamer Element for libcamera 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: , X-List-Received-Date: Thu, 27 Feb 2020 20:04:18 -0000 This patchset introduces two GStreamer features for libcamera. A GstDeviceProvider that allow enumerating the cameras and a libcamerasrc element the allow streaming from a selected camera. This is an early implementation that is not feature complete. It is designed to support multiple streams even though it currently only allow one srcpad. The goal of this submission is to get an inital element merged so that further improvement can happen incrementally. To test these features, you'll need GStreamer 1.16 (downgrade might be possible). To get the list of cameras you can run the following. Regression exist in the monitor of GStreamer 1.16.2 that may cause a crash, and also in master that may show nothing. This will be addressed in later release of GStreamer. gst-device-monitor-1.0 Video/Source To stream from a cameram, you can use the following pipeline: gst-launch-1.0 libcamerasrc ! videoconvert ! autovideosink Changes since v1: - Fixed review comments - Use a C++ class for glib mutex scoped locker - Fixed a potential deadlock on exhausted buffer pool - Minimum GStreamer requirement now set to 1.14 Jakub Adam (2): gst: utils: Factor-out the task resume helper gst: libcamerasrc: Prevent src task deadlock on exhausted buffer pool Nicolas Dufresne (25): Add GStreamer plugin and element skeleton gst: Add utility to convert StreamFormats to GstCaps gst: Add initial device provider gst: utils: Add simple scoped lockers for GMutex and GRectMutex gst: Add pads to the source gst: libcamerasrc: Allocate and add static pad gst: libcamerasrc: Add camera-name property gst: libcamerasrc: Add a debug category gst: libcamerasrc: Implement selection and acquisition gst: libcamerasrc: Add a task for the streaming thread gst: libcamerapad: Add a method to access the role gst: libcamerasrc: Store the srcpad in a vector gst: libcamerasrc: Send stream start event gst: utils: Add StreamConfiguration helpers gst: libcamerasrc: Implement minimal caps negotiation gst: libcamerasrc: Push segment event gst: Add a pool and an allocator implementation gst: libcamerapad: Allow storing a pool gst: libcamerasrc: Allocate and release buffers gst: Add getters for Stream and FrameBuffer gst: pad: Add method to store retrieve pending buffers gst: libcamerasrc: Implement initial streaming gst: libcamerasrc: Implement timestamp support gst: libcamerasrc: Add a TODO comment gst: Reduce GStreamer requirement to 1.14 meson_options.txt | 5 + src/gstreamer/gstlibcamera-utils.cpp | 173 +++++++ src/gstreamer/gstlibcamera-utils.h | 73 +++ src/gstreamer/gstlibcamera.c | 27 + src/gstreamer/gstlibcameraallocator.cpp | 252 +++++++++ src/gstreamer/gstlibcameraallocator.h | 31 ++ src/gstreamer/gstlibcamerapad.cpp | 197 +++++++ src/gstreamer/gstlibcamerapad.h | 37 ++ src/gstreamer/gstlibcamerapool.cpp | 145 ++++++ src/gstreamer/gstlibcamerapool.h | 39 ++ src/gstreamer/gstlibcameraprovider.cpp | 235 +++++++++ src/gstreamer/gstlibcameraprovider.h | 23 + src/gstreamer/gstlibcamerasrc.cpp | 654 ++++++++++++++++++++++++ src/gstreamer/gstlibcamerasrc.h | 22 + src/gstreamer/meson.build | 30 ++ src/meson.build | 2 + 16 files changed, 1945 insertions(+) create mode 100644 src/gstreamer/gstlibcamera-utils.cpp create mode 100644 src/gstreamer/gstlibcamera-utils.h create mode 100644 src/gstreamer/gstlibcamera.c create mode 100644 src/gstreamer/gstlibcameraallocator.cpp create mode 100644 src/gstreamer/gstlibcameraallocator.h create mode 100644 src/gstreamer/gstlibcamerapad.cpp create mode 100644 src/gstreamer/gstlibcamerapad.h create mode 100644 src/gstreamer/gstlibcamerapool.cpp create mode 100644 src/gstreamer/gstlibcamerapool.h create mode 100644 src/gstreamer/gstlibcameraprovider.cpp create mode 100644 src/gstreamer/gstlibcameraprovider.h create mode 100644 src/gstreamer/gstlibcamerasrc.cpp create mode 100644 src/gstreamer/gstlibcamerasrc.h create mode 100644 src/gstreamer/meson.build