diff options
Diffstat (limited to 'src/ipa/raspberrypi/cam_helper_imx477.cpp')
-rw-r--r-- | src/ipa/raspberrypi/cam_helper_imx477.cpp | 122 |
1 files changed, 22 insertions, 100 deletions
diff --git a/src/ipa/raspberrypi/cam_helper_imx477.cpp b/src/ipa/raspberrypi/cam_helper_imx477.cpp index d72a9be0..4098fde6 100644 --- a/src/ipa/raspberrypi/cam_helper_imx477.cpp +++ b/src/ipa/raspberrypi/cam_helper_imx477.cpp @@ -15,21 +15,15 @@ using namespace RPiController; -/* Metadata parser implementation specific to Sony IMX477 sensors. */ - -class MdParserImx477 : public MdParserSmia -{ -public: - MdParserImx477(); - Status Parse(libcamera::Span<const uint8_t> buffer) 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]; -}; +/* + * We care about two gain registers and a pair of exposure registers. Their + * I2C addresses from the Sony IMX477 datasheet: + */ +constexpr uint32_t expHiReg = 0x0202; +constexpr uint32_t expLoReg = 0x0203; +constexpr uint32_t gainHiReg = 0x0204; +constexpr uint32_t gainLoReg = 0x0205; +constexpr std::initializer_list<uint32_t> registerList [[maybe_unused]] = { expHiReg, expLoReg, gainHiReg, gainLoReg }; class CamHelperImx477 : public CamHelper { @@ -47,10 +41,13 @@ private: * in units of lines. */ static constexpr int frameIntegrationDiff = 22; + + void PopulateMetadata(const MdParser::RegisterMap ®isters, + Metadata &metadata) const override; }; CamHelperImx477::CamHelperImx477() - : CamHelper(std::make_unique<MdParserImx477>(), frameIntegrationDiff) + : CamHelper(std::make_unique<MdParserSmia>(registerList), frameIntegrationDiff) { } @@ -77,95 +74,20 @@ bool CamHelperImx477::SensorEmbeddedDataPresent() const return true; } -static CamHelper *Create() +void CamHelperImx477::PopulateMetadata(const MdParser::RegisterMap ®isters, + Metadata &metadata) const { - return new CamHelperImx477(); -} + DeviceStatus deviceStatus; -static RegisterCamHelper reg("imx477", &Create); + deviceStatus.shutter_speed = Exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg)); + deviceStatus.analogue_gain = Gain(registers.at(gainHiReg) * 256 + registers.at(gainLoReg)); -/* - * 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; + metadata.Set("device.status", deviceStatus); } -MdParser::Status MdParserImx477::Parse(libcamera::Span<const uint8_t> buffer) -{ - bool try_again = false; - - if (reset_) { - /* - * Search again through the metadata for the gain and exposure - * registers. - */ - assert(bits_per_pixel_); - /* 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(buffer, - 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] = buffer[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) +static CamHelper *Create() { - 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; + return new CamHelperImx477(); } -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; -} +static RegisterCamHelper reg("imx477", &Create); |