From 07be807dc74c55bf3109f83714d504a97e5f2f1a Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Wed, 8 Jan 2025 09:03:21 +0000 Subject: ipa: rpi: Add cam_helper for imx415 As another Starvis sensor, it is near identical to imx290/327. Signed-off-by: Dave Stevenson Signed-off-by: Naushir Patuck Reviewed-by: Naushir Patuck Reviewed-by: David Plowman Signed-off-by: Kieran Bingham --- src/ipa/rpi/cam_helper/cam_helper_imx415.cpp | 64 ++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 src/ipa/rpi/cam_helper/cam_helper_imx415.cpp (limited to 'src/ipa/rpi/cam_helper/cam_helper_imx415.cpp') diff --git a/src/ipa/rpi/cam_helper/cam_helper_imx415.cpp b/src/ipa/rpi/cam_helper/cam_helper_imx415.cpp new file mode 100644 index 00000000..c0a09eee --- /dev/null +++ b/src/ipa/rpi/cam_helper/cam_helper_imx415.cpp @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2025, Raspberry Pi Ltd + * + * camera helper for imx415 sensor + */ + +#include + +#include "cam_helper.h" + +using namespace RPiController; + +class CamHelperImx415 : public CamHelper +{ +public: + CamHelperImx415(); + uint32_t gainCode(double gain) const override; + double gain(uint32_t gainCode) const override; + unsigned int hideFramesStartup() const override; + unsigned int hideFramesModeSwitch() const override; + +private: + /* + * Smallest difference between the frame length and integration time, + * in units of lines. + */ + static constexpr int frameIntegrationDiff = 8; +}; + +CamHelperImx415::CamHelperImx415() + : CamHelper({}, frameIntegrationDiff) +{ +} + +uint32_t CamHelperImx415::gainCode(double gain) const +{ + int code = 66.6667 * std::log10(gain); + return std::max(0, std::min(code, 0xf0)); +} + +double CamHelperImx415::gain(uint32_t gainCode) const +{ + return std::pow(10, 0.015 * gainCode); +} + +unsigned int CamHelperImx415::hideFramesStartup() const +{ + /* On startup, we seem to get 1 bad frame. */ + return 1; +} + +unsigned int CamHelperImx415::hideFramesModeSwitch() const +{ + /* After a mode switch, we seem to get 1 bad frame. */ + return 1; +} + +static CamHelper *create() +{ + return new CamHelperImx415(); +} + +static RegisterCamHelper reg("imx415", &create); -- cgit v1.2.1