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generated by cgit v1.2.1 (git 2.18.0) at 2025-01-03 00:20:43 +0000
lass="hl kwc">libcamera::utils::Duration; using namespace std::literals::chrono_literals; class CamHelperImx296 : public CamHelper { public: CamHelperImx296(); uint32_t GainCode(double gain) const override; double Gain(uint32_t gain_code) const override; uint32_t ExposureLines(Duration exposure) const override; Duration Exposure(uint32_t exposure_lines) const override; private: static constexpr uint32_t maxGainCode = 239; static constexpr Duration timePerLine = 550.0 / 37.125e6 * 1.0s; /* * Smallest difference between the frame length and integration time, * in units of lines. */ static constexpr int frameIntegrationDiff = 4; }; CamHelperImx296::CamHelperImx296() : CamHelper(nullptr, frameIntegrationDiff) { } uint32_t CamHelperImx296::GainCode(double gain) const { uint32_t code = 20 * std::log10(gain) * 10; return std::min(code, maxGainCode); } double CamHelperImx296::Gain(uint32_t gain_code) const { return std::pow(10.0, gain_code / 200.0); } uint32_t CamHelperImx296::ExposureLines(Duration exposure) const { return (exposure - 14.26us) / timePerLine; } Duration CamHelperImx296::Exposure(uint32_t exposure_lines) const { return exposure_lines * timePerLine + 14.26us; } static CamHelper *Create() { return new CamHelperImx296(); } static RegisterCamHelper reg("imx296", &Create);
generated by cgit v1.2.1 (git 2.18.0) at 2025-01-03 00:20:43 +0000