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-rw-r--r--src/ipa/raspberrypi/cam_helper.cpp265
1 files changed, 0 insertions, 265 deletions
diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp
deleted file mode 100644
index ddd5e9a4..00000000
--- a/src/ipa/raspberrypi/cam_helper.cpp
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@@ -1,265 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * cam_helper.cpp - helper information for different sensors
- */
-
-#include <linux/videodev2.h>
-
-#include <limits>
-#include <map>
-#include <string.h>
-
-#include "libcamera/internal/v4l2_videodevice.h"
-
-#include "cam_helper.h"
-#include "md_parser.h"
-
-using namespace RPiController;
-using namespace libcamera;
-using libcamera::utils::Duration;
-using namespace std::literals::chrono_literals;
-
-namespace libcamera {
-LOG_DECLARE_CATEGORY(IPARPI)
-}
-
-namespace {
-
-std::map<std::string, CamHelperCreateFunc> &camHelpers()
-{
- static std::map<std::string, CamHelperCreateFunc> helpers;
- return helpers;
-}
-
-} /* namespace */
-
-CamHelper *CamHelper::create(std::string const &camName)
-{
- /*
- * CamHelpers get registered by static RegisterCamHelper
- * initialisers.
- */
- for (auto &p : camHelpers()) {
- if (camName.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)), 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 Duration lineLength) const
-{
- return exposure / lineLength;
-}
-
-Duration CamHelper::exposure(uint32_t exposureLines, const Duration lineLength) const
-{
- return exposureLines * lineLength;
-}
-
-std::pair<uint32_t, uint32_t> CamHelper::getBlanking(Duration &exposure,
- Duration minFrameDuration,
- Duration maxFrameDuration) const
-{
- uint32_t frameLengthMin, frameLengthMax, vblank, hblank;
- Duration lineLength = mode_.minLineLength;
-
- /*
- * minFrameDuration and maxFrameDuration are clamped by the caller
- * based on the limits for the active sensor mode.
- *
- * frameLengthMax gets calculated on the smallest line length as we do
- * not want to extend that unless absolutely necessary.
- */
- frameLengthMin = minFrameDuration / mode_.minLineLength;
- frameLengthMax = maxFrameDuration / mode_.minLineLength;
-
- /*
- * Watch out for (exposureLines + frameIntegrationDiff_) overflowing a
- * uint32_t in the std::clamp() below when the exposure time is
- * extremely (extremely!) long - as happens when the IPA calculates the
- * maximum possible exposure time.
- */
- uint32_t exposureLines = std::min(CamHelper::exposureLines(exposure, lineLength),
- std::numeric_limits<uint32_t>::max() - frameIntegrationDiff_);
- uint32_t frameLengthLines = std::clamp(exposureLines + frameIntegrationDiff_,
- frameLengthMin, frameLengthMax);
-
- /*
- * If our frame length lines is above the maximum allowed, see if we can
- * extend the line length to accommodate the requested frame length.
- */
- if (frameLengthLines > mode_.maxFrameLength) {
- Duration lineLengthAdjusted = lineLength * frameLengthLines / mode_.maxFrameLength;
- lineLength = std::min(mode_.maxLineLength, lineLengthAdjusted);
- frameLengthLines = mode_.maxFrameLength;
- }
-
- hblank = lineLengthToHblank(lineLength);
- vblank = frameLengthLines - mode_.height;
-
- /*
- * Limit the exposure to the maximum frame duration requested, and
- * re-calculate if it has been clipped.
- */
- exposureLines = std::min(frameLengthLines - frameIntegrationDiff_,
- CamHelper::exposureLines(exposure, lineLength));
- exposure = CamHelper::exposure(exposureLines, lineLength);
-
- return { vblank, hblank };
-}
-
-Duration CamHelper::hblankToLineLength(uint32_t hblank) const
-{
- return (mode_.width + hblank) * (1.0s / mode_.pixelRate);
-}
-
-uint32_t CamHelper::lineLengthToHblank(const Duration &lineLength) const
-{
- return (lineLength * mode_.pixelRate / 1.0s) - mode_.width;
-}
-
-Duration CamHelper::lineLengthPckToDuration(uint32_t lineLengthPck) const
-{
- return lineLengthPck * (1.0s / mode_.pixelRate);
-}
-
-void CamHelper::setCameraMode(const CameraMode &mode)
-{
- mode_ = mode;
- if (parser_) {
- parser_->reset();
- parser_->setBitsPerPixel(mode.bitdepth);
- parser_->setLineLengthBytes(0); /* We use SetBufferSize. */
- }
-}
-
-void CamHelper::getDelays(int &exposureDelay, int &gainDelay,
- int &vblankDelay, int &hblankDelay) const
-{
- /*
- * These values are correct for many sensors. Other sensors will
- * need to over-ride this function.
- */
- exposureDelay = 2;
- gainDelay = 1;
- vblankDelay = 2;
- hblankDelay = 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, line/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.shutterSpeed = parsedDeviceStatus.shutterSpeed;
- deviceStatus.analogueGain = parsedDeviceStatus.analogueGain;
- deviceStatus.frameLength = parsedDeviceStatus.frameLength;
- deviceStatus.lineLength = parsedDeviceStatus.lineLength;
- if (parsedDeviceStatus.sensorTemperature)
- deviceStatus.sensorTemperature = parsedDeviceStatus.sensorTemperature;
-
- LOG(IPARPI, Debug) << "Metadata updated - " << deviceStatus;
-
- metadata.set("device.status", deviceStatus);
-}
-
-void CamHelper::populateMetadata([[maybe_unused]] const MdParser::RegisterMap &registers,
- [[maybe_unused]] Metadata &metadata) const
-{
-}
-
-RegisterCamHelper::RegisterCamHelper(char const *camName,
- CamHelperCreateFunc createFunc)
-{
- camHelpers()[std::string(camName)] = createFunc;
-}