libcamera/vivid.git - libcamera pipeline handler for VIVID

diff options

Diffstat (limited to 'subprojects/packagefiles/pybind11')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2020, Raspberry Pi (Trading) Limited * * cam_helper_imx477.cpp - camera helper for imx477 sensor */ #include <assert.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include "cam_helper.hpp" #include "md_parser.hpp" using namespace RPiController; /* Metadata parser implementation specific to Sony IMX477 sensors. */ class MdParserImx477 : public MdParserSmia { public: MdParserImx477(); Status Parse(void *data) override; Status GetExposureLines(unsigned int &lines) override; Status GetGainCode(unsigned int &gain_code) override; private: /* Offset of the register's value in the metadata block. */ int reg_offsets_[4]; /* Value of the register, once read from the metadata block. */ int reg_values_[4]; }; class CamHelperImx477 : public CamHelper { public: CamHelperImx477(); uint32_t GainCode(double gain) const override; double Gain(uint32_t gain_code) const override; bool SensorEmbeddedDataPresent() const override; }; CamHelperImx477::CamHelperImx477() : CamHelper(new MdParserImx477()) { } uint32_t CamHelperImx477::GainCode(double gain) const { return static_cast<uint32_t>(1024 - 1024 / gain); } double CamHelperImx477::Gain(uint32_t gain_code) const { return 1024.0 / (1024 - gain_code); } bool CamHelperImx477::SensorEmbeddedDataPresent() const { return true; } static CamHelper *Create() { return new CamHelperImx477(); } static RegisterCamHelper reg("imx477", &Create); /* * We care about two gain registers and a pair of exposure registers. Their * I2C addresses from the Sony IMX477 datasheet: */ #define EXPHI_REG 0x0202 #define EXPLO_REG 0x0203 #define GAINHI_REG 0x0204 #define GAINLO_REG 0x0205 /* * Index of each into the reg_offsets and reg_values arrays. Must be in register * address order. */ #define EXPHI_INDEX 0 #define EXPLO_INDEX 1 #define GAINHI_INDEX 2 #define GAINLO_INDEX 3 MdParserImx477::MdParserImx477() { reg_offsets_[0] = reg_offsets_[1] = reg_offsets_[2] = reg_offsets_[3] = -1; } MdParser::Status MdParserImx477::Parse(void *data) { bool try_again = false; if (reset_) { /* * Search again through the metadata for the gain and exposure * registers. */ assert(bits_per_pixel_); assert(num_lines_ || buffer_size_bytes_); /* Need to be ordered */ uint32_t regs[4] = { EXPHI_REG, EXPLO_REG, GAINHI_REG, GAINLO_REG }; reg_offsets_[0] = reg_offsets_[1] = reg_offsets_[2] = reg_offsets_[3] = -1; int ret = static_cast<int>(findRegs(static_cast<uint8_t *>(data), regs, reg_offsets_, 4)); /* * > 0 means "worked partially but parse again next time", * < 0 means "hard error". */ if (ret > 0) try_again = true; else if (ret < 0) return ERROR; } for (int i = 0; i < 4; i++) { if (reg_offsets_[i] == -1) continue; reg_values_[i] = static_cast<uint8_t *>(data)[reg_offsets_[i]]; } /* Re-parse next time if we were unhappy in some way. */ reset_ = try_again; return OK; } MdParser::Status MdParserImx477::GetExposureLines(unsigned int &lines) { if (reg_offsets_[EXPHI_INDEX] == -1 || reg_offsets_[EXPLO_INDEX] == -1) return NOTFOUND; lines = reg_values_[EXPHI_INDEX] * 256 + reg_values_[EXPLO_INDEX]; return OK; } MdParser::Status MdParserImx477::GetGainCode(unsigned int &gain_code) { if (reg_offsets_[GAINHI_INDEX] == -1 || reg_offsets_[GAINLO_INDEX] == -1) return NOTFOUND; gain_code = reg_values_[GAINHI_INDEX] * 256 + reg_values_[GAINLO_INDEX]; return OK; }


context:
space:
mode: