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\n\tFri, 02 Dec 2022 04:40:06 -0800 (PST)", "To": "libcamera-devel@lists.libcamera.org", "Date": "Fri, 2 Dec 2022 12:40:03 +0000", "Message-Id": "<20221202124005.3643-1-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.25.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v2 0/2] Add read-only flag to ControlInfo", "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>", "From": "Naushir Patuck via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>", "Reply-To": "Naushir Patuck <naush@raspberrypi.com>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi,\n\nThis small patch series adds a read-only flag to ControlInfo. This is used\nto test if a control, in particular V4L2_CID_HBLANK, can be written to by\nuserland. It replaces the slightly fragile workaround we have right now where\nwe test if the min and max values of a control are the same to determine if\na control is read-only.\n\nI've only modified the one ControlInfo constructor signature used by the\nV4L2Device class to allow this flag to be set, as setting it for a non-v4l2\ncontrol probably does not make sense at this point. If folks think this is\nincorrect, please let me know.\n\nRegards,\nNaush\n\nNaushir Patuck (2):\n libcamera: controls: Add read-only flag to ControlInfo\n libcamera:camera_sensor, ipa: raspberrypi: Test readOnly() for HBLANK\n control\n\n include/libcamera/controls.h | 5 ++++-\n src/ipa/raspberrypi/raspberrypi.cpp | 12 +-----------\n src/libcamera/camera_sensor.cpp | 14 ++------------\n src/libcamera/controls.cpp | 17 +++++++++++++----\n src/libcamera/v4l2_device.cpp | 12 ++++++++----\n 5 files changed, 28 insertions(+), 32 deletions(-)" }