/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * cam_helper_imx219.cpp - camera helper for imx219 sensor */ #include #include #include #include /* * We have observed that the imx219 embedded data stream randomly returns junk * register values. Do not rely on embedded data until this has been resolved. */ #define ENABLE_EMBEDDED_DATA 0 #include "cam_helper.hpp" #if ENABLE_EMBEDDED_DATA #include "md_parser.hpp" #endif using namespace RPiController; /* * We care about one gain register and a pair of exposure registers. Their I2C * addresses from the Sony IMX219 datasheet: */ constexpr uint32_t gainReg = 0x157; constexpr uint32_t expHiReg = 0x15a; constexpr uint32_t expLoReg = 0x15b; constexpr uint32_t frameLengthHiReg = 0x160; constexpr uint32_t frameLengthLoReg = 0x161; constexpr std::initializer_list registerList [[maybe_unused]] = { expHiReg, expLoReg, gainReg, frameLengthHiReg, frameLengthLoReg }; class CamHelperImx219 : public CamHelper { public: CamHelperImx219(); uint32_t GainCode(double gain) const override; double Gain(uint32_t gain_code) const override; unsigned int MistrustFramesModeSwitch() const override; bool SensorEmbeddedDataPresent() const override; private: /* * Smallest difference between the frame length and integration time, * in units of lines. */ static constexpr int frameIntegrationDiff = 4; void PopulateMetadata(const MdParser::RegisterMap ®isters, Metadata &metadata) const override; }; CamHelperImx219::CamHelperImx219() #if ENABLE_EMBEDDED_DATA : CamHelper(std::make_unique(registerList), frameIntegrationDiff) #else : CamHelper({}, frameIntegrationDiff) #endif { } uint32_t CamHelperImx219::GainCode(double gain) const { return (uint32_t)(256 - 256 / gain); } double CamHelperImx219::Gain(uint32_t gain_code) const { return 256.0 / (256 - gain_code); } unsigned int CamHelperImx219::MistrustFramesModeSwitch() const { /* * For reasons unknown, we do occasionally get a bogus metadata frame * at a mode switch (though not at start-up). Possibly warrants some * investigation, though not a big deal. */ return 1; } bool CamHelperImx219::SensorEmbeddedDataPresent() const { return ENABLE_EMBEDDED_DATA; } void CamHelperImx219::PopulateMetadata(const MdParser::RegisterMap ®isters, Metadata &metadata) const { DeviceStatus deviceStatus; deviceStatus.shutter_speed = Exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg)); deviceStatus.analogue_gain = Gain(registers.at(gainReg)); deviceStatus.frame_length = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg); metadata.Set("device.status", deviceStatus); } static CamHelper *Create() { return new CamHelperImx219(); } static RegisterCamHelper reg("imx219", &Create); h=pfc/rkisp1-free-run-v2'>summaryrefs log tree commit diff

path: root/src/ipa/raspberrypi/controller/rpi/lux.cpp

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