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{ "id": 3243, "url": "https://patchwork.libcamera.org/api/covers/3243/?format=api", "web_url": "https://patchwork.libcamera.org/cover/3243/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20200323142205.28342-1-laurent.pinchart@ideasonboard.com>", "date": "2020-03-23T14:21:44", "name": "[libcamera-devel,00/21] qcam: Bypass format conversion when not required", "submitter": { "id": 2, "url": "https://patchwork.libcamera.org/api/people/2/?format=api", "name": "Laurent Pinchart", "email": "laurent.pinchart@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/cover/3243/mbox/", "series": [ { "id": 760, "url": "https://patchwork.libcamera.org/api/series/760/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=760", "date": "2020-03-23T14:21:44", "name": "qcam: Bypass format conversion when not required", "version": 1, "mbox": "https://patchwork.libcamera.org/series/760/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/3243/comments/", "headers": { "Return-Path": "<laurent.pinchart@ideasonboard.com>", "Received": [ "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 7B9B16041A\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 23 Mar 2020 15:22:18 +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 06917308\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 23 Mar 2020 15:22:17 +0100 (CET)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1584973338;\n\tbh=oJTvhzRZk2EMJ/GcM3KBGUExcnaJnGquZFAfmfA5cDk=;\n\th=From:To:Subject:Date:From;\n\tb=fMm/I5oU0a8mz0xjJuNlDSWGKsOh+1RpzBTlyGe55XTxCjiadGdSLivne0v9erqiX\n\tyelPCDklgwLB4Y/ZmgBL9Ae9NDCUSOKg/+Z7b3uy7gTCjadvD1nfupLhAPW1DPv6aT\n\t/rjKXuYHCCiIdmMCZuxkZX9782+ggtViOWWswMBg=", "From": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Mon, 23 Mar 2020 16:21:44 +0200", "Message-Id": "<20200323142205.28342-1-laurent.pinchart@ideasonboard.com>", "X-Mailer": "git-send-email 2.24.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH 00/21] qcam: Bypass format conversion when\n\tnot required", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "X-List-Received-Date": "Mon, 23 Mar 2020 14:22:18 -0000" }, "content": "Hello,\n\nThis small patch series improves performances in qcam when the captured\nformat matches one of the formats natively supported by the viewfinder.\nIt allows skipping conversion and using zero-copy in that case.\n\nThe series includes a few miscellaneous drive-by fixes and improvements\nthat are documented in individual patches from 01/21 to 12/21. From\n13/21 onwards the viewfinder code is refactored, and patch 19/21 adds\nzero-copy support. Patch 20/21 fixes an isse where the last buffer isn't\nreleased when stopping capture (it could be squashed with 19/21, but I\ndecided to submit it separately for now to ease review).\n\nPatch 21/21 finally adds support for more native RGB formats in the\nviewfinder, and in particular for DRM_FORMAT_BGR888 that the VIMC\npipeline handler defaults to. BGR888 however requires Qt 5.14, which\nisn't widely shipped by distros, so it's disabled if the Qt version is\ntoo old.\n\nLaurent Pinchart (21):\n qcam: Remove custom event dispatcher\n qcam: Ensure headers are self-contained\n qcam: Use QSize through the code base\n qcam: main_window: Move request queuing to a separate function\n qcam: main_window: Move capture event processing to main thread\n qcam: main_window: Replace start and stop actions with a toggle action\n qcam: main_window: Use icons from system icon theme\n qcam: main_window: Add shortcuts for toolbar actions\n qcam: main_window: Don't print message when saving a picture\n qcam: main_window: Document functions and reorganize member data\n qcam: main_window: Remove unneeded debug message\n qcam: Use Qt qInfo() and qWarning() logging facilities\n qcam: viewfinder: Add MappedBuffer to store memory mapping information\n qcam: viewfinder: Move multi-planar check into viewfinder\n qcam: viewfinder: Make the viewfinder hold a reference to a buffer\n qcam: viewfinder: Embed QImage in ViewFinder\n qcam: viewfinder: Use PixelFormat default constructor\n qcam: viewfinder: Reorder methods to match header file\n qcam: viewfinder: Avoid memory copy when conversion isn't needed\n qcam: viewfinder: Display icon when stopping capture\n qcam: viewfinder: Add support for more native formats\n\n src/qcam/assets/feathericons/feathericons.qrc | 1 +\n src/qcam/format_converter.cpp | 10 +-\n src/qcam/format_converter.h | 5 +-\n src/qcam/main.cpp | 11 +-\n src/qcam/main_window.cpp | 272 +++++++++++++-----\n src/qcam/main_window.h | 38 ++-\n src/qcam/meson.build | 2 +-\n src/qcam/qt_event_dispatcher.cpp | 152 ----------\n src/qcam/qt_event_dispatcher.h | 62 ----\n src/qcam/viewfinder.cpp | 140 +++++++--\n src/qcam/viewfinder.h | 36 ++-\n 11 files changed, 377 insertions(+), 352 deletions(-)\n delete mode 100644 src/qcam/qt_event_dispatcher.cpp\n delete mode 100644 src/qcam/qt_event_dispatcher.h" }