{"id":3117,"url":"https://patchwork.libcamera.org/api/covers/3117/?format=json","web_url":"https://patchwork.libcamera.org/cover/3117/","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":"<20200316214310.27665-1-laurent.pinchart@ideasonboard.com>","date":"2020-03-16T21:43:00","name":"[libcamera-devel,v2,00/10] Simple pipeline handler","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/?format=json","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"mbox":"https://patchwork.libcamera.org/cover/3117/mbox/","series":[{"id":724,"url":"https://patchwork.libcamera.org/api/series/724/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=724","date":"2020-03-16T21:43:00","name":"Simple pipeline handler","version":2,"mbox":"https://patchwork.libcamera.org/series/724/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/3117/comments/","headers":{"Return-Path":"","Received":["from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 8225760422\n\tfor ;\n\tMon, 16 Mar 2020 22:43:20 +0100 (CET)","from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi\n\t[81.175.216.236])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id BD360AC1;\n\tMon, 16 Mar 2020 22:43:19 +0100 (CET)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1584395000;\n\tbh=X2CTfJ1NH7LIO1Un48YxWWvSry5h7j7CF01J+IeOGzw=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=EhpiO1cYlVJ+AdTa4SRtquw2PURIl+jdnzKNwox8zpYjfNKtUY5MnOr4UYli7j/LV\n\t15dFWg+tf891wGgFHixutwkImnQRJeYCyD/UWa8mkWxUQvMYLUd8RfrVrIvbVpY8bS\n\thNDLzYUqNolcGmlaOZIGJ5HKIKj2d5NQcZGu8zBk=","From":"Laurent Pinchart ","To":"libcamera-devel@lists.libcamera.org","Cc":"Martijn Braam , Mickael GUENE , \n\tBenjamin GAIGNARD ,\n\tAndrey Konovalov ","Date":"Mon, 16 Mar 2020 23:43:00 +0200","Message-Id":"<20200316214310.27665-1-laurent.pinchart@ideasonboard.com>","X-Mailer":"git-send-email 2.24.1","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v2 00/10] Simple pipeline handler","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","X-List-Received-Date":"Mon, 16 Mar 2020 21:43:20 -0000"},"content":"Hello,\n\nThis patch series builds on Martijn's work to implement a pipeline\nhandler for simpler pipelines. Additional information about the pipeline\nhandler itself can be found in patch 08/10.\n\nCompared to v1, this version has been rebased on top of the buffer\nmanagement simplification ([1]). It also includes support for simple\nconverters, V4L2 mem2mem device that perform format conversion, to\nextend the number of supported pixel formats.\n\n[1] https://lists.libcamera.org/pipermail/libcamera-devel/2020-March/007224.html\n\nPatches 01/10 to 07/10 haven't been changed compare to v1. They add a\nV4L2 API extension required for pipeline auto-configuration (01/10), as\nwell aw new utility functions and miscellaneous small extensions (02/10\nto 07/10).\n\nPatch 08/10 adds the new simple pipeline handler, patch 09/10 the\nsimpler converter, and patch 10/10 integrates converter support into the\nsimple pipeline handler. The converter API should probably be improved,\nI've implemented it as a proof of concept. Other options also exist,\nsuch as making the simple pipeline handler a base class from which more\nspecialized pipeline handlers could derive from, and implement support\nfor converters in device-specific code.\n\nThe code has been tested on an i.MX7 platform with a greyscale sensor\nand the i.MX PXP as format converter to produce RGB. I've kept sun6i-csi\nfrom Martijn's work in the list of supported drivers, but supporting\nthat platform will require extending the corresponding driver to support\nthe VIDIOC_ENUM_FMT extension. Once done, if all goes well, the platform\nshould work out of the box.\n\nAs before, this is meant to be compatible with the stm32 and qcom-camss\nthat pipeline handlers have previously been submitted for. The\nrespective drivers need be added to the drivers array in\nSimplePipelineHandler::match(), and, as for sun6i-csi, support for the\nVIDIOC_ENUM_FMT extension needs to be implemented in the drivers, which\nshould be fairly easy.\n\nLaurent Pinchart (9):\n [DNI] include: linux: Extend VIDIOC_ENUM_FMT to support MC-centric\n devices\n libcamera: utils: Add string join function\n libcamera: v4l2_subdevice: Extend [gs]etFormat() to specify format\n type\n libcamera: v4l2_videodevice: Support filtering formats by media bus\n code\n libcamera: v4l2_videodevice: Expose the device capabilities\n libcamera: v4l2_videodevice: Downgrade 4CC conversion errors to\n warnings\n libcamera: v4l2_videodevice: Map V4L2_PIX_FMT_GREY to DRM FourCC\n libcamera: pipeline: simple: Add simple format converter\n libcamera: pipeline: simple: Integrate converter support\n\nMartijn Braam (1):\n libcamera: pipeline: Add a simple pipeline handler\n\n include/linux/videodev2.h | 4 +-\n src/libcamera/include/utils.h | 44 +\n src/libcamera/include/v4l2_subdevice.h | 11 +-\n src/libcamera/include/v4l2_videodevice.h | 6 +-\n src/libcamera/pipeline/meson.build | 1 +\n src/libcamera/pipeline/simple/converter.cpp | 210 +++++\n src/libcamera/pipeline/simple/converter.h | 60 ++\n src/libcamera/pipeline/simple/meson.build | 4 +\n src/libcamera/pipeline/simple/simple.cpp | 855 ++++++++++++++++++++\n src/libcamera/utils.cpp | 16 +\n src/libcamera/v4l2_subdevice.cpp | 23 +-\n src/libcamera/v4l2_videodevice.cpp | 36 +-\n test/utils.cpp | 7 +-\n 13 files changed, 1261 insertions(+), 16 deletions(-)\n create mode 100644 src/libcamera/pipeline/simple/converter.cpp\n create mode 100644 src/libcamera/pipeline/simple/converter.h\n create mode 100644 src/libcamera/pipeline/simple/meson.build\n create mode 100644 src/libcamera/pipeline/simple/simple.cpp"}