From 6d93836e1ad97b84c6113b583befee88078e06ec Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Wed, 6 Dec 2023 12:43:05 +0100 Subject: ipa: rpi: Provide a Camera Helper for the OV64A40 Support the OV64A40 sensor with a camera helper to manage the gain model, light sensitivity, and control delays. Signed-off-by: Lee Jackson Signed-off-by: Jacopo Mondi Reviewed-by: Naushir Patuck Reviewed-by: Kieran Bingham Signed-off-by: Kieran Bingham --- src/ipa/rpi/cam_helper/cam_helper_ov64a40.cpp | 74 +++++++++++++++++++++++++++ src/ipa/rpi/cam_helper/meson.build | 1 + 2 files changed, 75 insertions(+) create mode 100644 src/ipa/rpi/cam_helper/cam_helper_ov64a40.cpp (limited to 'src/ipa/rpi/cam_helper') diff --git a/src/ipa/rpi/cam_helper/cam_helper_ov64a40.cpp b/src/ipa/rpi/cam_helper/cam_helper_ov64a40.cpp new file mode 100644 index 00000000..27e449b1 --- /dev/null +++ b/src/ipa/rpi/cam_helper/cam_helper_ov64a40.cpp @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2021, Raspberry Pi Ltd + * Copyright (C) 2023, Ideas on Board Oy. + * + * cam_helper_ov64a40.cpp - camera information for ov64a40 sensor + */ + +#include + +#include "cam_helper.h" + +using namespace RPiController; + +class CamHelperOv64a40 : public CamHelper +{ +public: + CamHelperOv64a40(); + uint32_t gainCode(double gain) const override; + double gain(uint32_t gainCode) const override; + void getDelays(int &exposureDelay, int &gainDelay, + int &vblankDelay, int &hblankDelay) const override; + double getModeSensitivity(const CameraMode &mode) const override; + +private: + /* + * Smallest difference between the frame length and integration time, + * in units of lines. + */ + static constexpr int frameIntegrationDiff = 32; +}; + +CamHelperOv64a40::CamHelperOv64a40() + : CamHelper({}, frameIntegrationDiff) +{ +} + +uint32_t CamHelperOv64a40::gainCode(double gain) const +{ + return static_cast(gain * 128.0); +} + +double CamHelperOv64a40::gain(uint32_t gainCode) const +{ + return static_cast(gainCode) / 128.0; +} + +void CamHelperOv64a40::getDelays(int &exposureDelay, int &gainDelay, + int &vblankDelay, int &hblankDelay) const +{ + /* The driver appears to behave as follows: */ + exposureDelay = 2; + gainDelay = 2; + vblankDelay = 2; + hblankDelay = 2; +} + +double CamHelperOv64a40::getModeSensitivity(const CameraMode &mode) const +{ + if (mode.binX >= 2 && mode.scaleX >= 4) { + return 4.0; + } else if (mode.binX >= 2 && mode.scaleX >= 2) { + return 2.0; + } else { + return 1.0; + } +} + +static CamHelper *create() +{ + return new CamHelperOv64a40(); +} + +static RegisterCamHelper reg("ov64a40", &create); diff --git a/src/ipa/rpi/cam_helper/meson.build b/src/ipa/rpi/cam_helper/meson.build index bdf2db8e..72625057 100644 --- a/src/ipa/rpi/cam_helper/meson.build +++ b/src/ipa/rpi/cam_helper/meson.build @@ -9,6 +9,7 @@ rpi_ipa_cam_helper_sources = files([ 'cam_helper_imx477.cpp', 'cam_helper_imx519.cpp', 'cam_helper_imx708.cpp', + 'cam_helper_ov64a40.cpp', 'cam_helper_ov9281.cpp', 'md_parser_smia.cpp', ]) -- cgit v1.2.1