diff options
Diffstat (limited to 'src/ipa/raspberrypi/cam_helper.cpp')
| -rw-r--r-- | src/ipa/raspberrypi/cam_helper.cpp | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp deleted file mode 100644 index 3f81d418..00000000 --- a/src/ipa/raspberrypi/cam_helper.cpp +++ /dev/null @@ -1,219 +0,0 @@ -/* SPDX-License-Identifier: BSD-2-Clause */ -/* - * Copyright (C) 2019, Raspberry Pi (Trading) Limited - * - * cam_helper.cpp - helper information for different sensors - */ - -#include <linux/videodev2.h> - -#include <assert.h> -#include <map> -#include <string.h> - -#include "libcamera/internal/v4l2_videodevice.h" - -#include "cam_helper.hpp" -#include "md_parser.hpp" - -using namespace RPiController; -using namespace libcamera; -using libcamera::utils::Duration; - -namespace libcamera { -LOG_DECLARE_CATEGORY(IPARPI) -} - -static std::map<std::string, CamHelperCreateFunc> cam_helpers; - -CamHelper *CamHelper::Create(std::string const &cam_name) -{ - /* - * CamHelpers get registered by static RegisterCamHelper - * initialisers. - */ - for (auto &p : cam_helpers) { - if (cam_name.find(p.first) != std::string::npos) - return p.second(); - } - - return nullptr; -} - -CamHelper::CamHelper(std::unique_ptr<MdParser> parser, unsigned int frameIntegrationDiff) - : parser_(std::move(parser)), initialized_(false), - frameIntegrationDiff_(frameIntegrationDiff) -{ -} - -CamHelper::~CamHelper() -{ -} - -void CamHelper::Prepare(Span<const uint8_t> buffer, - Metadata &metadata) -{ - parseEmbeddedData(buffer, metadata); -} - -void CamHelper::Process([[maybe_unused]] StatisticsPtr &stats, - [[maybe_unused]] Metadata &metadata) -{ -} - -uint32_t CamHelper::ExposureLines(const Duration exposure) const -{ - assert(initialized_); - return exposure / mode_.line_length; -} - -Duration CamHelper::Exposure(uint32_t exposure_lines) const -{ - assert(initialized_); - return exposure_lines * mode_.line_length; -} - -uint32_t CamHelper::GetVBlanking(Duration &exposure, - Duration minFrameDuration, - Duration maxFrameDuration) const -{ - uint32_t frameLengthMin, frameLengthMax, vblank; - uint32_t exposureLines = ExposureLines(exposure); - - assert(initialized_); - - /* - * minFrameDuration and maxFrameDuration are clamped by the caller - * based on the limits for the active sensor mode. - */ - frameLengthMin = minFrameDuration / mode_.line_length; - frameLengthMax = maxFrameDuration / mode_.line_length; - - /* - * Limit the exposure to the maximum frame duration requested, and - * re-calculate if it has been clipped. - */ - exposureLines = std::min(frameLengthMax - frameIntegrationDiff_, exposureLines); - exposure = Exposure(exposureLines); - - /* Limit the vblank to the range allowed by the frame length limits. */ - vblank = std::clamp(exposureLines + frameIntegrationDiff_, - frameLengthMin, frameLengthMax) - mode_.height; - return vblank; -} - -void CamHelper::SetCameraMode(const CameraMode &mode) -{ - mode_ = mode; - if (parser_) { - parser_->SetBitsPerPixel(mode.bitdepth); - parser_->SetLineLengthBytes(0); /* We use SetBufferSize. */ - } - initialized_ = true; -} - -void CamHelper::GetDelays(int &exposure_delay, int &gain_delay, - int &vblank_delay) const -{ - /* - * These values are correct for many sensors. Other sensors will - * need to over-ride this function. - */ - exposure_delay = 2; - gain_delay = 1; - vblank_delay = 2; -} - -bool CamHelper::SensorEmbeddedDataPresent() const -{ - return false; -} - -double CamHelper::GetModeSensitivity([[maybe_unused]] const CameraMode &mode) const -{ - /* - * Most sensors have the same sensitivity in every mode, but this - * function can be overridden for those that do not. Note that it is - * called before mode_ is set, so it must return the sensitivity - * of the mode that is passed in. - */ - return 1.0; -} - -unsigned int CamHelper::HideFramesStartup() const -{ - /* - * The number of frames when a camera first starts that shouldn't be - * displayed as they are invalid in some way. - */ - return 0; -} - -unsigned int CamHelper::HideFramesModeSwitch() const -{ - /* After a mode switch, many sensors return valid frames immediately. */ - return 0; -} - -unsigned int CamHelper::MistrustFramesStartup() const -{ - /* Many sensors return a single bad frame on start-up. */ - return 1; -} - -unsigned int CamHelper::MistrustFramesModeSwitch() const -{ - /* Many sensors return valid metadata immediately. */ - return 0; -} - -void CamHelper::parseEmbeddedData(Span<const uint8_t> buffer, - Metadata &metadata) -{ - MdParser::RegisterMap registers; - Metadata parsedMetadata; - - if (buffer.empty()) - return; - - if (parser_->Parse(buffer, registers) != MdParser::Status::OK) { - LOG(IPARPI, Error) << "Embedded data buffer parsing failed"; - return; - } - - PopulateMetadata(registers, parsedMetadata); - metadata.Merge(parsedMetadata); - - /* - * Overwrite the exposure/gain, frame length and sensor temperature values - * in the existing DeviceStatus with values from the parsed embedded buffer. - * Fetch it first in case any other fields were set meaningfully. - */ - DeviceStatus deviceStatus, parsedDeviceStatus; - if (metadata.Get("device.status", deviceStatus) || - parsedMetadata.Get("device.status", parsedDeviceStatus)) { - LOG(IPARPI, Error) << "DeviceStatus not found"; - return; - } - - deviceStatus.shutter_speed = parsedDeviceStatus.shutter_speed; - deviceStatus.analogue_gain = parsedDeviceStatus.analogue_gain; - deviceStatus.frame_length = parsedDeviceStatus.frame_length; - if (parsedDeviceStatus.sensor_temperature) - deviceStatus.sensor_temperature = parsedDeviceStatus.sensor_temperature; - - LOG(IPARPI, Debug) << "Metadata updated - " << deviceStatus; - - metadata.Set("device.status", deviceStatus); -} - -void CamHelper::PopulateMetadata([[maybe_unused]] const MdParser::RegisterMap ®isters, - [[maybe_unused]] Metadata &metadata) const -{ -} - -RegisterCamHelper::RegisterCamHelper(char const *cam_name, - CamHelperCreateFunc create_func) -{ - cam_helpers[std::string(cam_name)] = create_func; -} |