From 726e9274ea95fa46352556d340c5793a8da51fcd Mon Sep 17 00:00:00 2001 From: Naushir Patuck Date: Wed, 3 May 2023 13:20:27 +0100 Subject: pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code Split the Raspberry Pi pipeline handler and IPA source code into common and VC4/BCM2835 specific file structures. For the pipeline handler, the common code files now live in src/libcamera/pipeline/rpi/common/ and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/. For the IPA, the common code files now live in src/ipa/rpi/{cam_helper,controller}/ and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/. To build the pipeline and IPA, the meson configuration options have now changed from "raspberrypi" to "rpi/vc4": meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4 Signed-off-by: Naushir Patuck Reviewed-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp | 66 ++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp (limited to 'src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp') diff --git a/src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp b/src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp new file mode 100644 index 00000000..86c5bc4c --- /dev/null +++ b/src/ipa/rpi/cam_helper/cam_helper_ov9281.cpp @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2021, Raspberry Pi Ltd + * + * cam_helper_ov9281.cpp - camera information for ov9281 sensor + */ + +#include + +#include "cam_helper.h" + +using namespace RPiController; + +class CamHelperOv9281 : public CamHelper +{ +public: + CamHelperOv9281(); + 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; + +private: + /* + * Smallest difference between the frame length and integration time, + * in units of lines. + */ + static constexpr int frameIntegrationDiff = 4; +}; + +/* + * OV9281 doesn't output metadata, so we have to use the "unicam parser" which + * works by counting frames. + */ + +CamHelperOv9281::CamHelperOv9281() + : CamHelper({}, frameIntegrationDiff) +{ +} + +uint32_t CamHelperOv9281::gainCode(double gain) const +{ + return static_cast(gain * 16.0); +} + +double CamHelperOv9281::gain(uint32_t gainCode) const +{ + return static_cast(gainCode) / 16.0; +} + +void CamHelperOv9281::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; +} + +static CamHelper *create() +{ + return new CamHelperOv9281(); +} + +static RegisterCamHelper reg("ov9281", &create); -- cgit v1.2.1