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\n\tTue, 28 Mar 2023 01:55:24 -0700 (PDT)", "To": "libcamera-devel@lists.libcamera.org", "Date": "Tue, 28 Mar 2023 09:55:19 +0100", "Message-Id": "<20230328085521.7409-1-david.plowman@raspberrypi.com>", "X-Mailer": "git-send-email 2.30.2", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v3 0/2] Add flicker avoidance controls", "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": "David Plowman via libcamera-devel <libcamera-devel@lists.libcamera.org>", "Reply-To": "David Plowman <david.plowman@raspberrypi.com>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi everyone\n\nHere's an updated version of flicker avoidance controls. It's similar\nto what I had previously, except that I've split the control which\ngave an explicit flicker period into two, one for reporting a\ncurrently detected value, and another for setting a custom flicker\nperiod. So we now have 3 controls in total.\n\nIn terms of Android, the AeFlickerDetected control corresponds fairly\ndirectly to Android's scene_flicker control, which is (from my reading\nof it) merely reporting any currently detected flicker\nperiod. AeFlickerDetected, however, allows arbitrary flicker periods\nto be identified, not just 50 or 60Hz.\n\nThe other controls (AeFlickerMode and AeFlickerCustom) correspond to\nAndroid's anti-banding control. Again, we extend it to allow arbitrary\nflicker periods.\n\nHope that all makes sense!\n\nThanks\nDavid\n\nDavid Plowman (2):\n libcamera: controls: Add controls for AEC/AGC flicker avoidance\n ipa: raspberrypi: Handle AEC/AGC flicker controls\n\n src/ipa/raspberrypi/raspberrypi.cpp | 80 +++++++++++++++++++++++++++\n src/libcamera/control_ids.yaml | 84 +++++++++++++++++++++++------\n 2 files changed, 147 insertions(+), 17 deletions(-)" }