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[80.229.223.72]) by smtp.gmail.com with ESMTPSA id p1sm57044wmc.11.2021.06.02.08.21.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jun 2021 08:21:26 -0700 (PDT) From: David Plowman To: libcamera-devel@lists.libcamera.org Date: Wed, 2 Jun 2021 16:21:21 +0100 Message-Id: <20210602152122.14836-2-david.plowman@raspberrypi.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210602152122.14836-1-david.plowman@raspberrypi.com> References: <20210602152122.14836-1-david.plowman@raspberrypi.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v2 1/2] ipa: raspberrypi: Add sensitivity field to camera mode 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: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" We use the CamHelper class to initialise it to the usual value of 1. The CamHelper's GetModeSensitivity method can be redefined to implement a different behaviour for sensors that require it. Signed-off-by: David Plowman --- src/ipa/raspberrypi/cam_helper.cpp | 11 +++++++++++ src/ipa/raspberrypi/cam_helper.hpp | 3 +++ src/ipa/raspberrypi/controller/camera_mode.h | 2 ++ src/ipa/raspberrypi/raspberrypi.cpp | 6 ++++++ 4 files changed, 22 insertions(+) diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp index 09917f3c..c1dd0daa 100644 --- a/src/ipa/raspberrypi/cam_helper.cpp +++ b/src/ipa/raspberrypi/cam_helper.cpp @@ -128,6 +128,17 @@ bool CamHelper::SensorEmbeddedDataPresent() const return false; } +double CamHelper::GetModeSensitivity([[maybe_unused]] const CameraMode &mode) const +{ + /* + * Most sensors have the same sensitivity in every mode, but this + * method can be overridden for those that do not. Note that it is + * called before mode_ is set, so it must return the sensitivity + * of the mode that is passed in. + */ + return 1.0; +} + unsigned int CamHelper::HideFramesStartup() const { /* diff --git a/src/ipa/raspberrypi/cam_helper.hpp b/src/ipa/raspberrypi/cam_helper.hpp index a52f3f0b..bc034877 100644 --- a/src/ipa/raspberrypi/cam_helper.hpp +++ b/src/ipa/raspberrypi/cam_helper.hpp @@ -39,6 +39,8 @@ namespace RPiController { // // A method to query if the sensor outputs embedded data that can be parsed. // +// A method to return the sensitivity of a given camera mode. +// // A parser to parse the embedded data buffers provided by some sensors (for // example, the imx219 does; the ov5647 doesn't). This allows us to know for // sure the exposure and gain of the frame we're looking at. CamHelper @@ -81,6 +83,7 @@ public: virtual void GetDelays(int &exposure_delay, int &gain_delay, int &vblank_delay) const; virtual bool SensorEmbeddedDataPresent() const; + virtual double GetModeSensitivity(const CameraMode &mode) const; virtual unsigned int HideFramesStartup() const; virtual unsigned int HideFramesModeSwitch() const; virtual unsigned int MistrustFramesStartup() const; diff --git a/src/ipa/raspberrypi/controller/camera_mode.h b/src/ipa/raspberrypi/controller/camera_mode.h index 256438c9..326f4f20 100644 --- a/src/ipa/raspberrypi/controller/camera_mode.h +++ b/src/ipa/raspberrypi/controller/camera_mode.h @@ -39,6 +39,8 @@ struct CameraMode { libcamera::Transform transform; // minimum and maximum fame lengths in units of lines uint32_t min_frame_length, max_frame_length; + // sensitivity of this mode + double sensitivity; }; #ifdef __cplusplus diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp index 0c4752ec..3da7e232 100644 --- a/src/ipa/raspberrypi/raspberrypi.cpp +++ b/src/ipa/raspberrypi/raspberrypi.cpp @@ -321,6 +321,12 @@ void IPARPi::setMode(const IPACameraSensorInfo &sensorInfo) */ mode_.min_frame_length = sensorInfo.minFrameLength; mode_.max_frame_length = sensorInfo.maxFrameLength; + + /* + * Some sensors may have different sensitivities in different modes; + * the CamHelper will know the correct value. + */ + mode_.sensitivity = helper_->GetModeSensitivity(mode_); } int IPARPi::configure(const IPACameraSensorInfo &sensorInfo,