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_imx290.cpp | 68 ++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 src/ipa/rpi/cam_helper/cam_helper_imx290.cpp (limited to 'src/ipa/rpi/cam_helper/cam_helper_imx290.cpp') diff --git a/src/ipa/rpi/cam_helper/cam_helper_imx290.cpp b/src/ipa/rpi/cam_helper/cam_helper_imx290.cpp new file mode 100644 index 00000000..7d6f5b54 --- /dev/null +++ b/src/ipa/rpi/cam_helper/cam_helper_imx290.cpp @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2021, Raspberry Pi Ltd + * + * cam_helper_imx290.cpp - camera helper for imx290 sensor + */ + +#include + +#include "cam_helper.h" + +using namespace RPiController; + +class CamHelperImx290 : public CamHelper +{ +public: + CamHelperImx290(); + 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; + unsigned int hideFramesModeSwitch() const override; + +private: + /* + * Smallest difference between the frame length and integration time, + * in units of lines. + */ + static constexpr int frameIntegrationDiff = 2; +}; + +CamHelperImx290::CamHelperImx290() + : CamHelper({}, frameIntegrationDiff) +{ +} + +uint32_t CamHelperImx290::gainCode(double gain) const +{ + int code = 66.6667 * log10(gain); + return std::max(0, std::min(code, 0xf0)); +} + +double CamHelperImx290::gain(uint32_t gainCode) const +{ + return pow(10, 0.015 * gainCode); +} + +void CamHelperImx290::getDelays(int &exposureDelay, int &gainDelay, + int &vblankDelay, int &hblankDelay) const +{ + exposureDelay = 2; + gainDelay = 2; + vblankDelay = 2; + hblankDelay = 2; +} + +unsigned int CamHelperImx290::hideFramesModeSwitch() const +{ + /* After a mode switch, we seem to get 1 bad frame. */ + return 1; +} + +static CamHelper *create() +{ + return new CamHelperImx290(); +} + +static RegisterCamHelper reg("imx290", &create); -- cgit v1.2.1