diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/sensor/camera_sensor.cpp | 980 | ||||
| -rw-r--r-- | src/libcamera/sensor/camera_sensor_legacy.cpp | 1015 | ||||
| -rw-r--r-- | src/libcamera/sensor/meson.build | 1 |
3 files changed, 1054 insertions, 942 deletions
diff --git a/src/libcamera/sensor/camera_sensor.cpp b/src/libcamera/sensor/camera_sensor.cpp index 025c9eef..e9b383a4 100644 --- a/src/libcamera/sensor/camera_sensor.cpp +++ b/src/libcamera/sensor/camera_sensor.cpp @@ -7,24 +7,13 @@ #include "libcamera/internal/camera_sensor.h" -#include <algorithm> -#include <cmath> -#include <float.h> -#include <limits.h> -#include <map> -#include <string.h> +#include <memory> +#include <variant> +#include <vector> -#include <libcamera/base/utils.h> +#include <libcamera/base/log.h> -#include <libcamera/camera.h> -#include <libcamera/orientation.h> -#include <libcamera/property_ids.h> - -#include "libcamera/internal/bayer_format.h" -#include "libcamera/internal/camera_lens.h" -#include "libcamera/internal/camera_sensor_properties.h" -#include "libcamera/internal/media_device.h" -#include "libcamera/internal/sysfs.h" +#include "libcamera/internal/media_object.h" /** * \file camera_sensor.h @@ -37,537 +26,16 @@ LOG_DEFINE_CATEGORY(CameraSensor) /** * \class CameraSensor - * \brief A camera sensor based on V4L2 subdevices + * \brief A abstract camera sensor * * The CameraSensor class eases handling of sensors for pipeline handlers by - * hiding the details of the V4L2 subdevice kernel API and caching sensor - * information. - * - * The implementation is currently limited to sensors that expose a single V4L2 - * subdevice with a single pad. It will be extended to support more complex - * devices as the needs arise. - */ - -/** - * \brief Construct a CameraSensor - * \param[in] entity The media entity backing the camera sensor - * - * Once constructed the instance must be initialized with init(). + * hiding the details of the kernel API and caching sensor information. */ -CameraSensor::CameraSensor(const MediaEntity *entity) - : entity_(entity), pad_(UINT_MAX), staticProps_(nullptr), - bayerFormat_(nullptr), supportFlips_(false), - flipsAlterBayerOrder_(false), properties_(properties::properties) -{ -} /** * \brief Destroy a CameraSensor */ -CameraSensor::~CameraSensor() -{ -} - -/** - * \brief Initialize the camera sensor instance - * - * This function performs the initialisation steps of the CameraSensor that may - * fail. It shall be called once and only once after constructing the instance. - * - * \return 0 on success or a negative error code otherwise - */ -int CameraSensor::init() -{ - for (const MediaPad *pad : entity_->pads()) { - if (pad->flags() & MEDIA_PAD_FL_SOURCE) { - pad_ = pad->index(); - break; - } - } - - if (pad_ == UINT_MAX) { - LOG(CameraSensor, Error) - << "Sensors with more than one pad are not supported"; - return -EINVAL; - } - - switch (entity_->function()) { - case MEDIA_ENT_F_CAM_SENSOR: - case MEDIA_ENT_F_PROC_VIDEO_ISP: - break; - - default: - LOG(CameraSensor, Error) - << "Invalid sensor function " - << utils::hex(entity_->function()); - return -EINVAL; - } - - /* Create and open the subdev. */ - subdev_ = std::make_unique<V4L2Subdevice>(entity_); - int ret = subdev_->open(); - if (ret < 0) - return ret; - - /* - * Clear any flips to be sure we get the "native" Bayer order. This is - * harmless for sensors where the flips don't affect the Bayer order. - */ - ControlList ctrls(subdev_->controls()); - if (subdev_->controls().find(V4L2_CID_HFLIP) != subdev_->controls().end()) - ctrls.set(V4L2_CID_HFLIP, 0); - if (subdev_->controls().find(V4L2_CID_VFLIP) != subdev_->controls().end()) - ctrls.set(V4L2_CID_VFLIP, 0); - subdev_->setControls(&ctrls); - - /* Enumerate, sort and cache media bus codes and sizes. */ - formats_ = subdev_->formats(pad_); - if (formats_.empty()) { - LOG(CameraSensor, Error) << "No image format found"; - return -EINVAL; - } - - mbusCodes_ = utils::map_keys(formats_); - std::sort(mbusCodes_.begin(), mbusCodes_.end()); - - for (const auto &format : formats_) { - const std::vector<SizeRange> &ranges = format.second; - std::transform(ranges.begin(), ranges.end(), std::back_inserter(sizes_), - [](const SizeRange &range) { return range.max; }); - } - - std::sort(sizes_.begin(), sizes_.end()); - - /* Remove duplicates. */ - auto last = std::unique(sizes_.begin(), sizes_.end()); - sizes_.erase(last, sizes_.end()); - - /* - * VIMC is a bit special, as it does not yet support all the mandatory - * requirements regular sensors have to respect. - * - * Do not validate the driver if it's VIMC and initialize the sensor - * properties with static information. - * - * \todo Remove the special case once the VIMC driver has been - * updated in all test platforms. - */ - if (entity_->device()->driver() == "vimc") { - initVimcDefaultProperties(); - - ret = initProperties(); - if (ret) - return ret; - - return discoverAncillaryDevices(); - } - - /* Get the color filter array pattern (only for RAW sensors). */ - for (unsigned int mbusCode : mbusCodes_) { - const BayerFormat &bayerFormat = BayerFormat::fromMbusCode(mbusCode); - if (bayerFormat.isValid()) { - bayerFormat_ = &bayerFormat; - break; - } - } - - ret = validateSensorDriver(); - if (ret) - return ret; - - ret = initProperties(); - if (ret) - return ret; - - ret = discoverAncillaryDevices(); - if (ret) - return ret; - - /* - * Set HBLANK to the minimum to start with a well-defined line length, - * allowing IPA modules that do not modify HBLANK to use the sensor - * minimum line length in their calculations. - */ - const struct v4l2_query_ext_ctrl *hblankInfo = subdev_->controlInfo(V4L2_CID_HBLANK); - if (hblankInfo && !(hblankInfo->flags & V4L2_CTRL_FLAG_READ_ONLY)) { - ControlList ctrl(subdev_->controls()); - - ctrl.set(V4L2_CID_HBLANK, static_cast<int32_t>(hblankInfo->minimum)); - ret = subdev_->setControls(&ctrl); - if (ret) - return ret; - } - - return applyTestPatternMode(controls::draft::TestPatternModeEnum::TestPatternModeOff); -} - -int CameraSensor::generateId() -{ - const std::string devPath = subdev_->devicePath(); - - /* Try to get ID from firmware description. */ - id_ = sysfs::firmwareNodePath(devPath); - if (!id_.empty()) - return 0; - - /* - * Virtual sensors not described in firmware - * - * Verify it's a platform device and construct ID from the device path - * and model of sensor. - */ - if (devPath.find("/sys/devices/platform/", 0) == 0) { - id_ = devPath.substr(strlen("/sys/devices/")) + " " + model(); - return 0; - } - - LOG(CameraSensor, Error) << "Can't generate sensor ID"; - return -EINVAL; -} - -int CameraSensor::validateSensorDriver() -{ - int err = 0; - - /* - * Optional controls are used to register optional sensor properties. If - * not present, some values will be defaulted. - */ - static constexpr uint32_t optionalControls[] = { - V4L2_CID_CAMERA_SENSOR_ROTATION, - }; - - const ControlIdMap &controls = subdev_->controls().idmap(); - for (uint32_t ctrl : optionalControls) { - if (!controls.count(ctrl)) - LOG(CameraSensor, Debug) - << "Optional V4L2 control " << utils::hex(ctrl) - << " not supported"; - } - - /* - * Recommended controls are similar to optional controls, but will - * become mandatory in the near future. Be loud if they're missing. - */ - static constexpr uint32_t recommendedControls[] = { - V4L2_CID_CAMERA_ORIENTATION, - }; - - for (uint32_t ctrl : recommendedControls) { - if (!controls.count(ctrl)) { - LOG(CameraSensor, Warning) - << "Recommended V4L2 control " << utils::hex(ctrl) - << " not supported"; - err = -EINVAL; - } - } - - /* - * Verify if sensor supports horizontal/vertical flips - * - * \todo Handle horizontal and vertical flips independently. - */ - const struct v4l2_query_ext_ctrl *hflipInfo = subdev_->controlInfo(V4L2_CID_HFLIP); - const struct v4l2_query_ext_ctrl *vflipInfo = subdev_->controlInfo(V4L2_CID_VFLIP); - if (hflipInfo && !(hflipInfo->flags & V4L2_CTRL_FLAG_READ_ONLY) && - vflipInfo && !(vflipInfo->flags & V4L2_CTRL_FLAG_READ_ONLY)) { - supportFlips_ = true; - - if (hflipInfo->flags & V4L2_CTRL_FLAG_MODIFY_LAYOUT || - vflipInfo->flags & V4L2_CTRL_FLAG_MODIFY_LAYOUT) - flipsAlterBayerOrder_ = true; - } - - if (!supportFlips_) - LOG(CameraSensor, Debug) - << "Camera sensor does not support horizontal/vertical flip"; - - /* - * Make sure the required selection targets are supported. - * - * Failures in reading any of the targets are not deemed to be fatal, - * but some properties and features, like constructing a - * IPACameraSensorInfo for the IPA module, won't be supported. - * - * \todo Make support for selection targets mandatory as soon as all - * test platforms have been updated. - */ - Rectangle rect; - int ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_BOUNDS, &rect); - if (ret) { - /* - * Default the pixel array size to the largest size supported - * by the sensor. The sizes_ vector is sorted in ascending - * order, the largest size is thus the last element. - */ - pixelArraySize_ = sizes_.back(); - - LOG(CameraSensor, Warning) - << "The PixelArraySize property has been defaulted to " - << pixelArraySize_; - err = -EINVAL; - } else { - pixelArraySize_ = rect.size(); - } - - ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_DEFAULT, &activeArea_); - if (ret) { - activeArea_ = Rectangle(pixelArraySize_); - LOG(CameraSensor, Warning) - << "The PixelArrayActiveAreas property has been defaulted to " - << activeArea_; - err = -EINVAL; - } - - ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP, &rect); - if (ret) { - LOG(CameraSensor, Warning) - << "Failed to retrieve the sensor crop rectangle"; - err = -EINVAL; - } - - if (err) { - LOG(CameraSensor, Warning) - << "The sensor kernel driver needs to be fixed"; - LOG(CameraSensor, Warning) - << "See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information"; - } - - if (!bayerFormat_) - return 0; - - /* - * For raw sensors, make sure the sensor driver supports the controls - * required by the CameraSensor class. - */ - static constexpr uint32_t mandatoryControls[] = { - V4L2_CID_ANALOGUE_GAIN, - V4L2_CID_EXPOSURE, - V4L2_CID_HBLANK, - V4L2_CID_PIXEL_RATE, - V4L2_CID_VBLANK, - }; - - err = 0; - for (uint32_t ctrl : mandatoryControls) { - if (!controls.count(ctrl)) { - LOG(CameraSensor, Error) - << "Mandatory V4L2 control " << utils::hex(ctrl) - << " not available"; - err = -EINVAL; - } - } - - if (err) { - LOG(CameraSensor, Error) - << "The sensor kernel driver needs to be fixed"; - LOG(CameraSensor, Error) - << "See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information"; - return err; - } - - return 0; -} - -/* - * \brief Initialize properties that cannot be intialized by the - * regular initProperties() function for VIMC - */ -void CameraSensor::initVimcDefaultProperties() -{ - /* Use the largest supported size. */ - pixelArraySize_ = sizes_.back(); - activeArea_ = Rectangle(pixelArraySize_); -} - -void CameraSensor::initStaticProperties() -{ - staticProps_ = CameraSensorProperties::get(model_); - if (!staticProps_) - return; - - /* Register the properties retrieved from the sensor database. */ - properties_.set(properties::UnitCellSize, staticProps_->unitCellSize); - - initTestPatternModes(); -} - -void CameraSensor::initTestPatternModes() -{ - const auto &v4l2TestPattern = controls().find(V4L2_CID_TEST_PATTERN); - if (v4l2TestPattern == controls().end()) { - LOG(CameraSensor, Debug) << "V4L2_CID_TEST_PATTERN is not supported"; - return; - } - - const auto &testPatternModes = staticProps_->testPatternModes; - if (testPatternModes.empty()) { - /* - * The camera sensor supports test patterns but we don't know - * how to map them so this should be fixed. - */ - LOG(CameraSensor, Debug) << "No static test pattern map for \'" - << model() << "\'"; - return; - } - - /* - * Create a map that associates the V4L2 control index to the test - * pattern mode by reversing the testPatternModes map provided by the - * camera sensor properties. This makes it easier to verify if the - * control index is supported in the below for loop that creates the - * list of supported test patterns. - */ - std::map<int32_t, controls::draft::TestPatternModeEnum> indexToTestPatternMode; - for (const auto &it : testPatternModes) - indexToTestPatternMode[it.second] = it.first; - - for (const ControlValue &value : v4l2TestPattern->second.values()) { - const int32_t index = value.get<int32_t>(); - - const auto it = indexToTestPatternMode.find(index); - if (it == indexToTestPatternMode.end()) { - LOG(CameraSensor, Debug) - << "Test pattern mode " << index << " ignored"; - continue; - } - - testPatternModes_.push_back(it->second); - } -} - -int CameraSensor::initProperties() -{ - model_ = subdev_->model(); - properties_.set(properties::Model, utils::toAscii(model_)); - - /* Generate a unique ID for the sensor. */ - int ret = generateId(); - if (ret) - return ret; - - /* Initialize the static properties from the sensor database. */ - initStaticProperties(); - - /* Retrieve and register properties from the kernel interface. */ - const ControlInfoMap &controls = subdev_->controls(); - - const auto &orientation = controls.find(V4L2_CID_CAMERA_ORIENTATION); - if (orientation != controls.end()) { - int32_t v4l2Orientation = orientation->second.def().get<int32_t>(); - int32_t propertyValue; - - switch (v4l2Orientation) { - default: - LOG(CameraSensor, Warning) - << "Unsupported camera location " - << v4l2Orientation << ", setting to External"; - [[fallthrough]]; - case V4L2_CAMERA_ORIENTATION_EXTERNAL: - propertyValue = properties::CameraLocationExternal; - break; - case V4L2_CAMERA_ORIENTATION_FRONT: - propertyValue = properties::CameraLocationFront; - break; - case V4L2_CAMERA_ORIENTATION_BACK: - propertyValue = properties::CameraLocationBack; - break; - } - properties_.set(properties::Location, propertyValue); - } else { - LOG(CameraSensor, Warning) << "Failed to retrieve the camera location"; - } - - const auto &rotationControl = controls.find(V4L2_CID_CAMERA_SENSOR_ROTATION); - if (rotationControl != controls.end()) { - int32_t propertyValue = rotationControl->second.def().get<int32_t>(); - - /* - * Cache the Transform associated with the camera mounting - * rotation for later use in computeTransform(). - */ - bool success; - mountingOrientation_ = orientationFromRotation(propertyValue, &success); - if (!success) { - LOG(CameraSensor, Warning) - << "Invalid rotation of " << propertyValue - << " degrees - ignoring"; - mountingOrientation_ = Orientation::Rotate0; - } - - properties_.set(properties::Rotation, propertyValue); - } else { - LOG(CameraSensor, Warning) - << "Rotation control not available, default to 0 degrees"; - properties_.set(properties::Rotation, 0); - mountingOrientation_ = Orientation::Rotate0; - } - - properties_.set(properties::PixelArraySize, pixelArraySize_); - properties_.set(properties::PixelArrayActiveAreas, { activeArea_ }); - - /* Color filter array pattern, register only for RAW sensors. */ - if (bayerFormat_) { - int32_t cfa; - switch (bayerFormat_->order) { - case BayerFormat::BGGR: - cfa = properties::draft::BGGR; - break; - case BayerFormat::GBRG: - cfa = properties::draft::GBRG; - break; - case BayerFormat::GRBG: - cfa = properties::draft::GRBG; - break; - case BayerFormat::RGGB: - cfa = properties::draft::RGGB; - break; - case BayerFormat::MONO: - cfa = properties::draft::MONO; - break; - } - - properties_.set(properties::draft::ColorFilterArrangement, cfa); - } - - return 0; -} - -/** - * \brief Check for and initialise any ancillary devices - * - * Sensors sometimes have ancillary devices such as a Lens or Flash that could - * be linked to their MediaEntity by the kernel. Search for and handle any - * such device. - * - * \todo Handle MEDIA_ENT_F_FLASH too. - */ -int CameraSensor::discoverAncillaryDevices() -{ - int ret; - - for (MediaEntity *ancillary : entity_->ancillaryEntities()) { - switch (ancillary->function()) { - case MEDIA_ENT_F_LENS: - focusLens_ = std::make_unique<CameraLens>(ancillary); - ret = focusLens_->init(); - if (ret) { - LOG(CameraSensor, Error) - << "Lens initialisation failed, lens disabled"; - focusLens_.reset(); - } - break; - - default: - LOG(CameraSensor, Warning) - << "Unsupported ancillary entity function " - << ancillary->function(); - break; - } - } - - return 0; -} +CameraSensor::~CameraSensor() = default; /** * \fn CameraSensor::model() @@ -622,29 +90,15 @@ int CameraSensor::discoverAncillaryDevices() */ /** + * \fn CameraSensor::sizes() * \brief Retrieve the supported frame sizes for a media bus code * \param[in] mbusCode The media bus code for which sizes are requested * * \return The supported frame sizes for \a mbusCode sorted in increasing order */ -std::vector<Size> CameraSensor::sizes(unsigned int mbusCode) const -{ - std::vector<Size> sizes; - - const auto &format = formats_.find(mbusCode); - if (format == formats_.end()) - return sizes; - - const std::vector<SizeRange> &ranges = format->second; - std::transform(ranges.begin(), ranges.end(), std::back_inserter(sizes), - [](const SizeRange &range) { return range.max; }); - - std::sort(sizes.begin(), sizes.end()); - - return sizes; -} /** + * \fn CameraSensor::resolution() * \brief Retrieve the camera sensor resolution * * The camera sensor resolution is the active pixel area size, clamped to the @@ -657,12 +111,9 @@ std::vector<Size> CameraSensor::sizes(unsigned int mbusCode) const * * \return The camera sensor resolution in pixels */ -Size CameraSensor::resolution() const -{ - return std::min(sizes_.back(), activeArea_.size()); -} /** + * \fn CameraSensor::getFormat() * \brief Retrieve the best sensor format for a desired output * \param[in] mbusCodes The list of acceptable media bus codes * \param[in] size The desired size @@ -698,59 +149,9 @@ Size CameraSensor::resolution() const * \return The best sensor output format matching the desired media bus codes * and size on success, or an empty format otherwise. */ -V4L2SubdeviceFormat CameraSensor::getFormat(const std::vector<unsigned int> &mbusCodes, - const Size &size) const -{ - unsigned int desiredArea = size.width * size.height; - unsigned int bestArea = UINT_MAX; - float desiredRatio = static_cast<float>(size.width) / size.height; - float bestRatio = FLT_MAX; - const Size *bestSize = nullptr; - uint32_t bestCode = 0; - - for (unsigned int code : mbusCodes) { - const auto formats = formats_.find(code); - if (formats == formats_.end()) - continue; - - for (const SizeRange &range : formats->second) { - const Size &sz = range.max; - - if (sz.width < size.width || sz.height < size.height) - continue; - - float ratio = static_cast<float>(sz.width) / sz.height; - float ratioDiff = std::abs(ratio - desiredRatio); - unsigned int area = sz.width * sz.height; - unsigned int areaDiff = area - desiredArea; - - if (ratioDiff > bestRatio) - continue; - - if (ratioDiff < bestRatio || areaDiff < bestArea) { - bestRatio = ratioDiff; - bestArea = areaDiff; - bestSize = &sz; - bestCode = code; - } - } - } - - if (!bestSize) { - LOG(CameraSensor, Debug) << "No supported format or size found"; - return {}; - } - - V4L2SubdeviceFormat format{ - .code = bestCode, - .size = *bestSize, - .colorSpace = ColorSpace::Raw, - }; - - return format; -} /** + * \fn CameraSensor::setFormat() * \brief Set the sensor output format * \param[in] format The desired sensor output format * \param[in] transform The transform to be applied on the sensor. @@ -765,32 +166,9 @@ V4L2SubdeviceFormat CameraSensor::getFormat(const std::vector<unsigned int> &mbu * * \return 0 on success or a negative error code otherwise */ -int CameraSensor::setFormat(V4L2SubdeviceFormat *format, Transform transform) -{ - /* Configure flips if the sensor supports that. */ - if (supportFlips_) { - ControlList flipCtrls(subdev_->controls()); - - flipCtrls.set(V4L2_CID_HFLIP, - static_cast<int32_t>(!!(transform & Transform::HFlip))); - flipCtrls.set(V4L2_CID_VFLIP, - static_cast<int32_t>(!!(transform & Transform::VFlip))); - - int ret = subdev_->setControls(&flipCtrls); - if (ret) - return ret; - } - - /* Apply format on the subdev. */ - int ret = subdev_->setFormat(pad_, format); - if (ret) - return ret; - - subdev_->updateControlInfo(); - return 0; -} /** + * \fn CameraSensor::tryFormat() * \brief Try the sensor output format * \param[in] format The desired sensor output format * @@ -801,13 +179,9 @@ int CameraSensor::setFormat(V4L2SubdeviceFormat *format, Transform transform) * * \return 0 on success or a negative error code otherwise */ -int CameraSensor::tryFormat(V4L2SubdeviceFormat *format) const -{ - return subdev_->setFormat(pad_, format, - V4L2Subdevice::Whence::TryFormat); -} /** + * \fn CameraSensor::applyConfiguration() * \brief Apply a sensor configuration to the camera sensor * \param[in] config The sensor configuration * \param[in] transform The transform to be applied on the sensor. @@ -822,74 +196,6 @@ int CameraSensor::tryFormat(V4L2SubdeviceFormat *format) const * \return 0 if \a config is applied correctly to the camera sensor, a negative * error code otherwise */ -int CameraSensor::applyConfiguration(const SensorConfiguration &config, - Transform transform, - V4L2SubdeviceFormat *sensorFormat) -{ - if (!config.isValid()) { - LOG(CameraSensor, Error) << "Invalid sensor configuration"; - return -EINVAL; - } - - std::vector<unsigned int> filteredCodes; - std::copy_if(mbusCodes_.begin(), mbusCodes_.end(), - std::back_inserter(filteredCodes), - [&config](unsigned int mbusCode) { - BayerFormat bayer = BayerFormat::fromMbusCode(mbusCode); - if (bayer.bitDepth == config.bitDepth) - return true; - return false; - }); - if (filteredCodes.empty()) { - LOG(CameraSensor, Error) - << "Cannot find any format with bit depth " - << config.bitDepth; - return -EINVAL; - } - - /* - * Compute the sensor's data frame size by applying the cropping - * rectangle, subsampling and output crop to the sensor's pixel array - * size. - * - * \todo The actual size computation is for now ignored and only the - * output size is considered. This implies that resolutions obtained - * with two different cropping/subsampling will look identical and - * only the first found one will be considered. - */ - V4L2SubdeviceFormat subdevFormat = {}; - for (unsigned int code : filteredCodes) { - for (const Size &size : sizes(code)) { - if (size.width != config.outputSize.width || - size.height != config.outputSize.height) - continue; - - subdevFormat.code = code; - subdevFormat.size = size; - break; - } - } - if (!subdevFormat.code) { - LOG(CameraSensor, Error) << "Invalid output size in sensor configuration"; - return -EINVAL; - } - - int ret = setFormat(&subdevFormat, transform); - if (ret) - return ret; - - /* - * Return to the caller the format actually applied to the sensor. - * This is relevant if transform has changed the bayer pattern order. - */ - if (sensorFormat) - *sensorFormat = subdevFormat; - - /* \todo Handle AnalogCrop. Most sensors do not support set_selection */ - /* \todo Handle scaling in the digital domain. */ - - return 0; -} /** * \fn CameraSensor::properties() @@ -898,6 +204,7 @@ int CameraSensor::applyConfiguration(const SensorConfiguration &config, */ /** + * \fn CameraSensor::sensorInfo() * \brief Assemble and return the camera sensor info * \param[out] info The camera sensor info * @@ -911,82 +218,9 @@ int CameraSensor::applyConfiguration(const SensorConfiguration &config, * * \return 0 on success, a negative error code otherwise */ -int CameraSensor::sensorInfo(IPACameraSensorInfo *info) const -{ - if (!bayerFormat_) - return -EINVAL; - - info->model = model(); - - /* - * The active area size is a static property, while the crop - * rectangle needs to be re-read as it depends on the sensor - * configuration. - */ - info->activeAreaSize = { activeArea_.width, activeArea_.height }; - - /* - * \todo Support for retreiving the crop rectangle is scheduled to - * become mandatory. For the time being use the default value if it has - * been initialized at sensor driver validation time. - */ - int ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP, &info->analogCrop); - if (ret) { - info->analogCrop = activeArea_; - LOG(CameraSensor, Warning) - << "The analogue crop rectangle has been defaulted to the active area size"; - } - - /* - * IPACameraSensorInfo::analogCrop::x and IPACameraSensorInfo::analogCrop::y - * are defined relatively to the active pixel area, while V4L2's - * TGT_CROP target is defined in respect to the full pixel array. - * - * Compensate it by subtracting the active area offset. - */ - info->analogCrop.x -= activeArea_.x; - info->analogCrop.y -= activeArea_.y; - - /* The bit depth and image size depend on the currently applied format. */ - V4L2SubdeviceFormat format{}; - ret = subdev_->getFormat(pad_, &format); - if (ret) - return ret; - - info->bitsPerPixel = MediaBusFormatInfo::info(format.code).bitsPerPixel; - info->outputSize = format.size; - - std::optional<int32_t> cfa = properties_.get(properties::draft::ColorFilterArrangement); - info->cfaPattern = cfa ? *cfa : properties::draft::RGB; - - /* - * Retrieve the pixel rate, line length and minimum/maximum frame - * duration through V4L2 controls. Support for the V4L2_CID_PIXEL_RATE, - * V4L2_CID_HBLANK and V4L2_CID_VBLANK controls is mandatory. - */ - ControlList ctrls = subdev_->getControls({ V4L2_CID_PIXEL_RATE, - V4L2_CID_HBLANK, - V4L2_CID_VBLANK }); - if (ctrls.empty()) { - LOG(CameraSensor, Error) - << "Failed to retrieve camera info controls"; - return -EINVAL; - } - - info->pixelRate = ctrls.get(V4L2_CID_PIXEL_RATE).get<int64_t>(); - - const ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK); - info->minLineLength = info->outputSize.width + hblank.min().get<int32_t>(); - info->maxLineLength = info->outputSize.width + hblank.max().get<int32_t>(); - - const ControlInfo vblank = ctrls.infoMap()->at(V4L2_CID_VBLANK); - info->minFrameLength = info->outputSize.height + vblank.min().get<int32_t>(); - info->maxFrameLength = info->outputSize.height + vblank.max().get<int32_t>(); - - return 0; -} /** + * \fn CameraSensor::computeTransform() * \brief Compute the Transform that gives the requested \a orientation * \param[inout] orientation The desired image orientation * @@ -1012,40 +246,9 @@ int CameraSensor::sensorInfo(IPACameraSensorInfo *info) const * \return A Transform instance that applied to the CameraSensor produces images * with \a orientation */ -Transform CameraSensor::computeTransform(Orientation *orientation) const -{ - /* - * If we cannot do any flips we cannot change the native camera mounting - * orientation. - */ - if (!supportFlips_) { - *orientation = mountingOrientation_; - return Transform::Identity; - } - - /* - * Now compute the required transform to obtain 'orientation' starting - * from the mounting rotation. - * - * As a note: - * orientation / mountingOrientation_ = transform - * mountingOrientation_ * transform = orientation - */ - Transform transform = *orientation / mountingOrientation_; - - /* - * If transform contains any Transpose we cannot do it, so adjust - * 'orientation' to report the image native orientation and return Identity. - */ - if (!!(transform & Transform::Transpose)) { - *orientation = mountingOrientation_; - return Transform::Identity; - } - - return transform; -} /** + * \fn CameraSensor::bayerOrder() * \brief Compute the Bayer order that results from the given Transform * \param[in] t The Transform to apply to the sensor * @@ -1057,23 +260,9 @@ Transform CameraSensor::computeTransform(Orientation *orientation) const * * \return The Bayer order produced by the sensor when the Transform is applied */ -BayerFormat::Order CameraSensor::bayerOrder(Transform t) const -{ - /* Return a defined by meaningless value for non-Bayer sensors. */ - if (!bayerFormat_) - return BayerFormat::Order::BGGR; - - if (!flipsAlterBayerOrder_) - return bayerFormat_->order; - - /* - * Apply the transform to the native (i.e. untransformed) Bayer order, - * using the rest of the Bayer format supplied by the caller. - */ - return bayerFormat_->transform(t).order; -} /** + * \fn CameraSensor::controls() * \brief Retrieve the supported V4L2 controls and their information * * Control information is updated automatically to reflect the current sensor @@ -1082,12 +271,9 @@ BayerFormat::Order CameraSensor::bayerOrder(Transform t) const * * \return A map of the V4L2 controls supported by the sensor */ -const ControlInfoMap &CameraSensor::controls() const -{ - return subdev_->controls(); -} /** + * \fn CameraSensor::getControls() * \brief Read V4L2 controls from the sensor * \param[in] ids The list of controls to read, specified by their ID * @@ -1105,12 +291,9 @@ const ControlInfoMap &CameraSensor::controls() const * \return The control values in a ControlList on success, or an empty list on * error */ -ControlList CameraSensor::getControls(const std::vector<uint32_t> &ids) -{ - return subdev_->getControls(ids); -} /** + * \fn CameraSensor::setControls() * \brief Write V4L2 controls to the sensor * \param[in] ctrls The list of controls to write * @@ -1135,10 +318,6 @@ ControlList CameraSensor::getControls(const std::vector<uint32_t> &ids) * \retval -EINVAL One of the control is not supported or not accessible * \retval i The index of the control that failed */ -int CameraSensor::setControls(ControlList *ctrls) -{ - return subdev_->setControls(ctrls); -} /** * \fn CameraSensor::testPatternModes() @@ -1149,6 +328,7 @@ int CameraSensor::setControls(ControlList *ctrls) */ /** + * \fn CameraSensor::setTestPatternMode() * \brief Set the test pattern mode for the camera sensor * \param[in] mode The test pattern mode * @@ -1156,84 +336,6 @@ int CameraSensor::setControls(ControlList *ctrls) * pattern mode. Otherwise, this function is a no-op. Setting the same test * pattern mode for every frame thus incurs no performance penalty. */ -int CameraSensor::setTestPatternMode(controls::draft::TestPatternModeEnum mode) -{ - if (testPatternMode_ == mode) - return 0; - - if (testPatternModes_.empty()) { - LOG(CameraSensor, Error) - << "Camera sensor does not support test pattern modes."; - return -EINVAL; - } - - return applyTestPatternMode(mode); -} - -int CameraSensor::applyTestPatternMode(controls::draft::TestPatternModeEnum mode) -{ - if (testPatternModes_.empty()) - return 0; - - auto it = std::find(testPatternModes_.begin(), testPatternModes_.end(), - mode); - if (it == testPatternModes_.end()) { - LOG(CameraSensor, Error) << "Unsupported test pattern mode " - << mode; - return -EINVAL; - } - - LOG(CameraSensor, Debug) << "Apply test pattern mode " << mode; - - int32_t index = staticProps_->testPatternModes.at(mode); - ControlList ctrls{ controls() }; - ctrls.set(V4L2_CID_TEST_PATTERN, index); - - int ret = setControls(&ctrls); - if (ret) - return ret; - - testPatternMode_ = mode; - - return 0; -} - -std::string CameraSensor::logPrefix() const -{ - return "'" + entity_->name() + "'"; -} - -namespace { - -/* Transitory default camera sensor implementation */ -class CameraSensorDefault : public CameraSensor -{ -public: - CameraSensorDefault(MediaEntity *entity) - : CameraSensor(entity) - { - } - - static bool match([[maybe_unused]] const MediaEntity *entity) - { - return true; - } - - static std::unique_ptr<CameraSensorDefault> create(MediaEntity *entity) - { - std::unique_ptr<CameraSensorDefault> sensor = - std::make_unique<CameraSensorDefault>(entity); - - if (sensor->init()) - return nullptr; - - return sensor; - } -}; - -REGISTER_CAMERA_SENSOR(CameraSensorDefault) - -}; /* namespace */ /** * \class CameraSensorFactoryBase @@ -1269,18 +371,18 @@ std::unique_ptr<CameraSensor> CameraSensorFactoryBase::create(MediaEntity *entit CameraSensorFactoryBase::factories(); for (const CameraSensorFactoryBase *factory : factories) { - if (!factory->match(entity)) - continue; + std::variant<std::unique_ptr<CameraSensor>, int> result = + factory->match(entity); - std::unique_ptr<CameraSensor> sensor = factory->createInstance(entity); - if (!sensor) { + if (std::holds_alternative<std::unique_ptr<CameraSensor>>(result)) + return std::get<std::unique_ptr<CameraSensor>>(std::move(result)); + + if (std::get<int>(result)) { LOG(CameraSensor, Error) << "Failed to create sensor for '" - << entity->name(); + << entity->name() << ": " << std::get<int>(result); return nullptr; } - - return sensor; } return nullptr; @@ -1336,32 +438,26 @@ void CameraSensorFactoryBase::registerFactory(CameraSensorFactoryBase *factory) */ /** - * \fn CameraSensorFactory::createInstance() const - * \brief Create an instance of the CameraSensor corresponding to the factory - * - * \return A unique pointer to a newly constructed instance of the CameraSensor - * subclass corresponding to the factory - */ - -/** * \def REGISTER_CAMERA_SENSOR(sensor) * \brief Register a camera sensor type to the sensor factory * \param[in] sensor Class name of the CameraSensor derived class to register * * Register a CameraSensor subclass with the factory and make it available to - * try and match sensors. The subclass needs to implement two static functions: + * try and match sensors. The subclass needs to implement a static match + * function: * * \code{.cpp} - * static bool match(const MediaEntity *entity); - * static std::unique_ptr<sensor> create(MediaEntity *entity); + * static std::variant<std::unique_ptr<CameraSensor>, int> match(MediaEntity *entity); * \endcode * - * The match() function tests if the sensor class supports the camera sensor - * identified by a MediaEntity. + * The function tests if the sensor class supports the camera sensor identified + * by a MediaEntity. If so, it creates a new instance of the sensor class. The + * return value is a variant that contains * - * The create() function creates a new instance of the sensor class. It may - * return a null pointer if initialization of the instance fails. It will only - * be called if the match() function has returned true for the given entity. + * - A new instance of the camera sensor class if the entity matched and + * creation succeeded ; + * - A non-zero error code if the entity matched and the creation failed ; or + * - A zero error code if the entity didn't match. */ } /* namespace libcamera */ diff --git a/src/libcamera/sensor/camera_sensor_legacy.cpp b/src/libcamera/sensor/camera_sensor_legacy.cpp new file mode 100644 index 00000000..6affee78 --- /dev/null +++ b/src/libcamera/sensor/camera_sensor_legacy.cpp @@ -0,0 +1,1015 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_sensor_legacy.cpp - A V4L2-backed camera sensor + */ + +#include <algorithm> +#include <float.h> +#include <iomanip> +#include <limits.h> +#include <map> +#include <math.h> +#include <memory> +#include <string.h> +#include <string> +#include <vector> + +#include <libcamera/base/class.h> +#include <libcamera/base/log.h> +#include <libcamera/base/utils.h> + +#include <libcamera/camera.h> +#include <libcamera/control_ids.h> +#include <libcamera/controls.h> +#include <libcamera/geometry.h> +#include <libcamera/orientation.h> +#include <libcamera/property_ids.h> +#include <libcamera/transform.h> + +#include <libcamera/ipa/core_ipa_interface.h> + +#include "libcamera/internal/bayer_format.h" +#include "libcamera/internal/camera_lens.h" +#include "libcamera/internal/camera_sensor.h" +#include "libcamera/internal/camera_sensor_properties.h" +#include "libcamera/internal/formats.h" +#include "libcamera/internal/media_device.h" +#include "libcamera/internal/sysfs.h" +#include "libcamera/internal/v4l2_subdevice.h" + +namespace libcamera { + +class BayerFormat; +class CameraLens; +class MediaEntity; +class SensorConfiguration; + +struct CameraSensorProperties; + +enum class Orientation; + +LOG_DECLARE_CATEGORY(CameraSensor) + +class CameraSensorLegacy : public CameraSensor, protected Loggable +{ +public: + CameraSensorLegacy(const MediaEntity *entity); + ~CameraSensorLegacy(); + + static std::variant<std::unique_ptr<CameraSensor>, int> + match(MediaEntity *entity); + + const std::string &model() const override { return model_; } + const std::string &id() const override { return id_; } + + const MediaEntity *entity() const override { return entity_; } + V4L2Subdevice *device() override { return subdev_.get(); } + + CameraLens *focusLens() override { return focusLens_.get(); } + + const std::vector<unsigned int> &mbusCodes() const override { return mbusCodes_; } + std::vector<Size> sizes(unsigned int mbusCode) const override; + Size resolution() const override; + + V4L2SubdeviceFormat getFormat(const std::vector<unsigned int> &mbusCodes, + const Size &size) const override; + int setFormat(V4L2SubdeviceFormat *format, + Transform transform = Transform::Identity) override; + int tryFormat(V4L2SubdeviceFormat *format) const override; + + int applyConfiguration(const SensorConfiguration &config, + Transform transform = Transform::Identity, + V4L2SubdeviceFormat *sensorFormat = nullptr) override; + + const ControlList &properties() const override { return properties_; } + int sensorInfo(IPACameraSensorInfo *info) const override; + Transform computeTransform(Orientation *orientation) const override; + BayerFormat::Order bayerOrder(Transform t) const override; + + const ControlInfoMap &controls() const override; + ControlList getControls(const std::vector<uint32_t> &ids) override; + int setControls(ControlList *ctrls) override; + + const std::vector<controls::draft::TestPatternModeEnum> & + testPatternModes() const override { return testPatternModes_; } + int setTestPatternMode(controls::draft::TestPatternModeEnum mode) override; + +protected: + std::string logPrefix() const override; + +private: + LIBCAMERA_DISABLE_COPY(CameraSensorLegacy) + + int init(); + int generateId(); + int validateSensorDriver(); + void initVimcDefaultProperties(); + void initStaticProperties(); + void initTestPatternModes(); + int initProperties(); + int applyTestPatternMode(controls::draft::TestPatternModeEnum mode); + int discoverAncillaryDevices(); + + const MediaEntity *entity_; + std::unique_ptr<V4L2Subdevice> subdev_; + unsigned int pad_; + + const CameraSensorProperties *staticProps_; + + std::string model_; + std::string id_; + + V4L2Subdevice::Formats formats_; + std::vector<unsigned int> mbusCodes_; + std::vector<Size> sizes_; + std::vector<controls::draft::TestPatternModeEnum> testPatternModes_; + controls::draft::TestPatternModeEnum testPatternMode_; + + Size pixelArraySize_; + Rectangle activeArea_; + const BayerFormat *bayerFormat_; + bool supportFlips_; + bool flipsAlterBayerOrder_; + Orientation mountingOrientation_; + + ControlList properties_; + + std::unique_ptr<CameraLens> focusLens_; +}; + +/** + * \class CameraSensorLegacy + * \brief A camera sensor based on V4L2 subdevices + * + * The implementation is currently limited to sensors that expose a single V4L2 + * subdevice with a single pad. It will be extended to support more complex + * devices as the needs arise. + */ + +CameraSensorLegacy::CameraSensorLegacy(const MediaEntity *entity) + : entity_(entity), pad_(UINT_MAX), staticProps_(nullptr), + bayerFormat_(nullptr), supportFlips_(false), + flipsAlterBayerOrder_(false), properties_(properties::properties) +{ +} + +CameraSensorLegacy::~CameraSensorLegacy() = default; + +std::variant<std::unique_ptr<CameraSensor>, int> +CameraSensorLegacy::match(MediaEntity *entity) +{ + std::unique_ptr<CameraSensorLegacy> sensor = + std::make_unique<CameraSensorLegacy>(entity); + + int ret = sensor->init(); + if (ret) + return { ret }; + + return { std::move(sensor) }; +} + +int CameraSensorLegacy::init() +{ + for (const MediaPad *pad : entity_->pads()) { + if (pad->flags() & MEDIA_PAD_FL_SOURCE) { + pad_ = pad->index(); + break; + } + } + + if (pad_ == UINT_MAX) { + LOG(CameraSensor, Error) + << "Sensors with more than one pad are not supported"; + return -EINVAL; + } + + switch (entity_->function()) { + case MEDIA_ENT_F_CAM_SENSOR: + case MEDIA_ENT_F_PROC_VIDEO_ISP: + break; + + default: + LOG(CameraSensor, Error) + << "Invalid sensor function " + << utils::hex(entity_->function()); + return -EINVAL; + } + + /* Create and open the subdev. */ + subdev_ = std::make_unique<V4L2Subdevice>(entity_); + int ret = subdev_->open(); + if (ret < 0) + return ret; + + /* + * Clear any flips to be sure we get the "native" Bayer order. This is + * harmless for sensors where the flips don't affect the Bayer order. + */ + ControlList ctrls(subdev_->controls()); + if (subdev_->controls().find(V4L2_CID_HFLIP) != subdev_->controls().end()) + ctrls.set(V4L2_CID_HFLIP, 0); + if (subdev_->controls().find(V4L2_CID_VFLIP) != subdev_->controls().end()) + ctrls.set(V4L2_CID_VFLIP, 0); + subdev_->setControls(&ctrls); + + /* Enumerate, sort and cache media bus codes and sizes. */ + formats_ = subdev_->formats(pad_); + if (formats_.empty()) { + LOG(CameraSensor, Error) << "No image format found"; + return -EINVAL; + } + + mbusCodes_ = utils::map_keys(formats_); + std::sort(mbusCodes_.begin(), mbusCodes_.end()); + + for (const auto &format : formats_) { + const std::vector<SizeRange> &ranges = format.second; + std::transform(ranges.begin(), ranges.end(), std::back_inserter(sizes_), + [](const SizeRange &range) { return range.max; }); + } + + std::sort(sizes_.begin(), sizes_.end()); + + /* Remove duplicates. */ + auto last = std::unique(sizes_.begin(), sizes_.end()); + sizes_.erase(last, sizes_.end()); + + /* + * VIMC is a bit special, as it does not yet support all the mandatory + * requirements regular sensors have to respect. + * + * Do not validate the driver if it's VIMC and initialize the sensor + * properties with static information. + * + * \todo Remove the special case once the VIMC driver has been + * updated in all test platforms. + */ + if (entity_->device()->driver() == "vimc") { + initVimcDefaultProperties(); + + ret = initProperties(); + if (ret) + return ret; + + return discoverAncillaryDevices(); + } + + /* Get the color filter array pattern (only for RAW sensors). */ + for (unsigned int mbusCode : mbusCodes_) { + const BayerFormat &bayerFormat = BayerFormat::fromMbusCode(mbusCode); + if (bayerFormat.isValid()) { + bayerFormat_ = &bayerFormat; + break; + } + } + + ret = validateSensorDriver(); + if (ret) + return ret; + + ret = initProperties(); + if (ret) + return ret; + + ret = discoverAncillaryDevices(); + if (ret) + return ret; + + /* + * Set HBLANK to the minimum to start with a well-defined line length, + * allowing IPA modules that do not modify HBLANK to use the sensor + * minimum line length in their calculations. + */ + const struct v4l2_query_ext_ctrl *hblankInfo = subdev_->controlInfo(V4L2_CID_HBLANK); + if (hblankInfo && !(hblankInfo->flags & V4L2_CTRL_FLAG_READ_ONLY)) { + ControlList ctrl(subdev_->controls()); + + ctrl.set(V4L2_CID_HBLANK, static_cast<int32_t>(hblankInfo->minimum)); + ret = subdev_->setControls(&ctrl); + if (ret) + return ret; + } + + return applyTestPatternMode(controls::draft::TestPatternModeEnum::TestPatternModeOff); +} + +int CameraSensorLegacy::generateId() +{ + const std::string devPath = subdev_->devicePath(); + + /* Try to get ID from firmware description. */ + id_ = sysfs::firmwareNodePath(devPath); + if (!id_.empty()) + return 0; + + /* + * Virtual sensors not described in firmware + * + * Verify it's a platform device and construct ID from the device path + * and model of sensor. + */ + if (devPath.find("/sys/devices/platform/", 0) == 0) { + id_ = devPath.substr(strlen("/sys/devices/")) + " " + model(); + return 0; + } + + LOG(CameraSensor, Error) << "Can't generate sensor ID"; + return -EINVAL; +} + +int CameraSensorLegacy::validateSensorDriver() +{ + int err = 0; + + /* + * Optional controls are used to register optional sensor properties. If + * not present, some values will be defaulted. + */ + static constexpr uint32_t optionalControls[] = { + V4L2_CID_CAMERA_SENSOR_ROTATION, + }; + + const ControlIdMap &controls = subdev_->controls().idmap(); + for (uint32_t ctrl : optionalControls) { + if (!controls.count(ctrl)) + LOG(CameraSensor, Debug) + << "Optional V4L2 control " << utils::hex(ctrl) + << " not supported"; + } + + /* + * Recommended controls are similar to optional controls, but will + * become mandatory in the near future. Be loud if they're missing. + */ + static constexpr uint32_t recommendedControls[] = { + V4L2_CID_CAMERA_ORIENTATION, + }; + + for (uint32_t ctrl : recommendedControls) { + if (!controls.count(ctrl)) { + LOG(CameraSensor, Warning) + << "Recommended V4L2 control " << utils::hex(ctrl) + << " not supported"; + err = -EINVAL; + } + } + + /* + * Verify if sensor supports horizontal/vertical flips + * + * \todo Handle horizontal and vertical flips independently. + */ + const struct v4l2_query_ext_ctrl *hflipInfo = subdev_->controlInfo(V4L2_CID_HFLIP); + const struct v4l2_query_ext_ctrl *vflipInfo = subdev_->controlInfo(V4L2_CID_VFLIP); + if (hflipInfo && !(hflipInfo->flags & V4L2_CTRL_FLAG_READ_ONLY) && + vflipInfo && !(vflipInfo->flags & V4L2_CTRL_FLAG_READ_ONLY)) { + supportFlips_ = true; + + if (hflipInfo->flags & V4L2_CTRL_FLAG_MODIFY_LAYOUT || + vflipInfo->flags & V4L2_CTRL_FLAG_MODIFY_LAYOUT) + flipsAlterBayerOrder_ = true; + } + + if (!supportFlips_) + LOG(CameraSensor, Debug) + << "Camera sensor does not support horizontal/vertical flip"; + + /* + * Make sure the required selection targets are supported. + * + * Failures in reading any of the targets are not deemed to be fatal, + * but some properties and features, like constructing a + * IPACameraSensorInfo for the IPA module, won't be supported. + * + * \todo Make support for selection targets mandatory as soon as all + * test platforms have been updated. + */ + Rectangle rect; + int ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_BOUNDS, &rect); + if (ret) { + /* + * Default the pixel array size to the largest size supported + * by the sensor. The sizes_ vector is sorted in ascending + * order, the largest size is thus the last element. + */ + pixelArraySize_ = sizes_.back(); + + LOG(CameraSensor, Warning) + << "The PixelArraySize property has been defaulted to " + << pixelArraySize_; + err = -EINVAL; + } else { + pixelArraySize_ = rect.size(); + } + + ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_DEFAULT, &activeArea_); + if (ret) { + activeArea_ = Rectangle(pixelArraySize_); + LOG(CameraSensor, Warning) + << "The PixelArrayActiveAreas property has been defaulted to " + << activeArea_; + err = -EINVAL; + } + + ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP, &rect); + if (ret) { + LOG(CameraSensor, Warning) + << "Failed to retrieve the sensor crop rectangle"; + err = -EINVAL; + } + + if (err) { + LOG(CameraSensor, Warning) + << "The sensor kernel driver needs to be fixed"; + LOG(CameraSensor, Warning) + << "See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information"; + } + + if (!bayerFormat_) + return 0; + + /* + * For raw sensors, make sure the sensor driver supports the controls + * required by the CameraSensor class. + */ + static constexpr uint32_t mandatoryControls[] = { + V4L2_CID_ANALOGUE_GAIN, + V4L2_CID_EXPOSURE, + V4L2_CID_HBLANK, + V4L2_CID_PIXEL_RATE, + V4L2_CID_VBLANK, + }; + + err = 0; + for (uint32_t ctrl : mandatoryControls) { + if (!controls.count(ctrl)) { + LOG(CameraSensor, Error) + << "Mandatory V4L2 control " << utils::hex(ctrl) + << " not available"; + err = -EINVAL; + } + } + + if (err) { + LOG(CameraSensor, Error) + << "The sensor kernel driver needs to be fixed"; + LOG(CameraSensor, Error) + << "See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information"; + return err; + } + + return 0; +} + +void CameraSensorLegacy::initVimcDefaultProperties() +{ + /* Use the largest supported size. */ + pixelArraySize_ = sizes_.back(); + activeArea_ = Rectangle(pixelArraySize_); +} + +void CameraSensorLegacy::initStaticProperties() +{ + staticProps_ = CameraSensorProperties::get(model_); + if (!staticProps_) + return; + + /* Register the properties retrieved from the sensor database. */ + properties_.set(properties::UnitCellSize, staticProps_->unitCellSize); + + initTestPatternModes(); +} + +void CameraSensorLegacy::initTestPatternModes() +{ + const auto &v4l2TestPattern = controls().find(V4L2_CID_TEST_PATTERN); + if (v4l2TestPattern == controls().end()) { + LOG(CameraSensor, Debug) << "V4L2_CID_TEST_PATTERN is not supported"; + return; + } + + const auto &testPatternModes = staticProps_->testPatternModes; + if (testPatternModes.empty()) { + /* + * The camera sensor supports test patterns but we don't know + * how to map them so this should be fixed. + */ + LOG(CameraSensor, Debug) << "No static test pattern map for \'" + << model() << "\'"; + return; + } + + /* + * Create a map that associates the V4L2 control index to the test + * pattern mode by reversing the testPatternModes map provided by the + * camera sensor properties. This makes it easier to verify if the + * control index is supported in the below for loop that creates the + * list of supported test patterns. + */ + std::map<int32_t, controls::draft::TestPatternModeEnum> indexToTestPatternMode; + for (const auto &it : testPatternModes) + indexToTestPatternMode[it.second] = it.first; + + for (const ControlValue &value : v4l2TestPattern->second.values()) { + const int32_t index = value.get<int32_t>(); + + const auto it = indexToTestPatternMode.find(index); + if (it == indexToTestPatternMode.end()) { + LOG(CameraSensor, Debug) + << "Test pattern mode " << index << " ignored"; + continue; + } + + testPatternModes_.push_back(it->second); + } +} + +int CameraSensorLegacy::initProperties() +{ + model_ = subdev_->model(); + properties_.set(properties::Model, utils::toAscii(model_)); + + /* Generate a unique ID for the sensor. */ + int ret = generateId(); + if (ret) + return ret; + + /* Initialize the static properties from the sensor database. */ + initStaticProperties(); + + /* Retrieve and register properties from the kernel interface. */ + const ControlInfoMap &controls = subdev_->controls(); + + const auto &orientation = controls.find(V4L2_CID_CAMERA_ORIENTATION); + if (orientation != controls.end()) { + int32_t v4l2Orientation = orientation->second.def().get<int32_t>(); + int32_t propertyValue; + + switch (v4l2Orientation) { + default: + LOG(CameraSensor, Warning) + << "Unsupported camera location " + << v4l2Orientation << ", setting to External"; + [[fallthrough]]; + case V4L2_CAMERA_ORIENTATION_EXTERNAL: + propertyValue = properties::CameraLocationExternal; + break; + case V4L2_CAMERA_ORIENTATION_FRONT: + propertyValue = properties::CameraLocationFront; + break; + case V4L2_CAMERA_ORIENTATION_BACK: + propertyValue = properties::CameraLocationBack; + break; + } + properties_.set(properties::Location, propertyValue); + } else { + LOG(CameraSensor, Warning) << "Failed to retrieve the camera location"; + } + + const auto &rotationControl = controls.find(V4L2_CID_CAMERA_SENSOR_ROTATION); + if (rotationControl != controls.end()) { + int32_t propertyValue = rotationControl->second.def().get<int32_t>(); + + /* + * Cache the Transform associated with the camera mounting + * rotation for later use in computeTransform(). + */ + bool success; + mountingOrientation_ = orientationFromRotation(propertyValue, &success); + if (!success) { + LOG(CameraSensor, Warning) + << "Invalid rotation of " << propertyValue + << " degrees - ignoring"; + mountingOrientation_ = Orientation::Rotate0; + } + + properties_.set(properties::Rotation, propertyValue); + } else { + LOG(CameraSensor, Warning) + << "Rotation control not available, default to 0 degrees"; + properties_.set(properties::Rotation, 0); + mountingOrientation_ = Orientation::Rotate0; + } + + properties_.set(properties::PixelArraySize, pixelArraySize_); + properties_.set(properties::PixelArrayActiveAreas, { activeArea_ }); + + /* Color filter array pattern, register only for RAW sensors. */ + if (bayerFormat_) { + int32_t cfa; + switch (bayerFormat_->order) { + case BayerFormat::BGGR: + cfa = properties::draft::BGGR; + break; + case BayerFormat::GBRG: + cfa = properties::draft::GBRG; + break; + case BayerFormat::GRBG: + cfa = properties::draft::GRBG; + break; + case BayerFormat::RGGB: + cfa = properties::draft::RGGB; + break; + case BayerFormat::MONO: + cfa = properties::draft::MONO; + break; + } + + properties_.set(properties::draft::ColorFilterArrangement, cfa); + } + + return 0; +} + +int CameraSensorLegacy::discoverAncillaryDevices() +{ + int ret; + + for (MediaEntity *ancillary : entity_->ancillaryEntities()) { + switch (ancillary->function()) { + case MEDIA_ENT_F_LENS: + focusLens_ = std::make_unique<CameraLens>(ancillary); + ret = focusLens_->init(); + if (ret) { + LOG(CameraSensor, Error) + << "Lens initialisation failed, lens disabled"; + focusLens_.reset(); + } + break; + + default: + LOG(CameraSensor, Warning) + << "Unsupported ancillary entity function " + << ancillary->function(); + break; + } + } + + return 0; +} + +std::vector<Size> CameraSensorLegacy::sizes(unsigned int mbusCode) const +{ + std::vector<Size> sizes; + + const auto &format = formats_.find(mbusCode); + if (format == formats_.end()) + return sizes; + + const std::vector<SizeRange> &ranges = format->second; + std::transform(ranges.begin(), ranges.end(), std::back_inserter(sizes), + [](const SizeRange &range) { return range.max; }); + + std::sort(sizes.begin(), sizes.end()); + + return sizes; +} + +Size CameraSensorLegacy::resolution() const +{ + return std::min(sizes_.back(), activeArea_.size()); +} + +V4L2SubdeviceFormat +CameraSensorLegacy::getFormat(const std::vector<unsigned int> &mbusCodes, + const Size &size) const +{ + unsigned int desiredArea = size.width * size.height; + unsigned int bestArea = UINT_MAX; + float desiredRatio = static_cast<float>(size.width) / size.height; + float bestRatio = FLT_MAX; + const Size *bestSize = nullptr; + uint32_t bestCode = 0; + + for (unsigned int code : mbusCodes) { + const auto formats = formats_.find(code); + if (formats == formats_.end()) + continue; + + for (const SizeRange &range : formats->second) { + const Size &sz = range.max; + + if (sz.width < size.width || sz.height < size.height) + continue; + + float ratio = static_cast<float>(sz.width) / sz.height; + float ratioDiff = std::abs(ratio - desiredRatio); + unsigned int area = sz.width * sz.height; + unsigned int areaDiff = area - desiredArea; + + if (ratioDiff > bestRatio) + continue; + + if (ratioDiff < bestRatio || areaDiff < bestArea) { + bestRatio = ratioDiff; + bestArea = areaDiff; + bestSize = &sz; + bestCode = code; + } + } + } + + if (!bestSize) { + LOG(CameraSensor, Debug) << "No supported format or size found"; + return {}; + } + + V4L2SubdeviceFormat format{ + .code = bestCode, + .size = *bestSize, + .colorSpace = ColorSpace::Raw, + }; + + return format; +} + +int CameraSensorLegacy::setFormat(V4L2SubdeviceFormat *format, Transform transform) +{ + /* Configure flips if the sensor supports that. */ + if (supportFlips_) { + ControlList flipCtrls(subdev_->controls()); + + flipCtrls.set(V4L2_CID_HFLIP, + static_cast<int32_t>(!!(transform & Transform::HFlip))); + flipCtrls.set(V4L2_CID_VFLIP, + static_cast<int32_t>(!!(transform & Transform::VFlip))); + + int ret = subdev_->setControls(&flipCtrls); + if (ret) + return ret; + } + + /* Apply format on the subdev. */ + int ret = subdev_->setFormat(pad_, format); + if (ret) + return ret; + + subdev_->updateControlInfo(); + return 0; +} + +int CameraSensorLegacy::tryFormat(V4L2SubdeviceFormat *format) const +{ + return subdev_->setFormat(pad_, format, + V4L2Subdevice::Whence::TryFormat); +} + +int CameraSensorLegacy::applyConfiguration(const SensorConfiguration &config, + Transform transform, + V4L2SubdeviceFormat *sensorFormat) +{ + if (!config.isValid()) { + LOG(CameraSensor, Error) << "Invalid sensor configuration"; + return -EINVAL; + } + + std::vector<unsigned int> filteredCodes; + std::copy_if(mbusCodes_.begin(), mbusCodes_.end(), + std::back_inserter(filteredCodes), + [&config](unsigned int mbusCode) { + BayerFormat bayer = BayerFormat::fromMbusCode(mbusCode); + if (bayer.bitDepth == config.bitDepth) + return true; + return false; + }); + if (filteredCodes.empty()) { + LOG(CameraSensor, Error) + << "Cannot find any format with bit depth " + << config.bitDepth; + return -EINVAL; + } + + /* + * Compute the sensor's data frame size by applying the cropping + * rectangle, subsampling and output crop to the sensor's pixel array + * size. + * + * \todo The actual size computation is for now ignored and only the + * output size is considered. This implies that resolutions obtained + * with two different cropping/subsampling will look identical and + * only the first found one will be considered. + */ + V4L2SubdeviceFormat subdevFormat = {}; + for (unsigned int code : filteredCodes) { + for (const Size &size : sizes(code)) { + if (size.width != config.outputSize.width || + size.height != config.outputSize.height) + continue; + + subdevFormat.code = code; + subdevFormat.size = size; + break; + } + } + if (!subdevFormat.code) { + LOG(CameraSensor, Error) << "Invalid output size in sensor configuration"; + return -EINVAL; + } + + int ret = setFormat(&subdevFormat, transform); + if (ret) + return ret; + + /* + * Return to the caller the format actually applied to the sensor. + * This is relevant if transform has changed the bayer pattern order. + */ + if (sensorFormat) + *sensorFormat = subdevFormat; + + /* \todo Handle AnalogCrop. Most sensors do not support set_selection */ + /* \todo Handle scaling in the digital domain. */ + + return 0; +} + +int CameraSensorLegacy::sensorInfo(IPACameraSensorInfo *info) const +{ + if (!bayerFormat_) + return -EINVAL; + + info->model = model(); + + /* + * The active area size is a static property, while the crop + * rectangle needs to be re-read as it depends on the sensor + * configuration. + */ + info->activeAreaSize = { activeArea_.width, activeArea_.height }; + + /* + * \todo Support for retreiving the crop rectangle is scheduled to + * become mandatory. For the time being use the default value if it has + * been initialized at sensor driver validation time. + */ + int ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP, &info->analogCrop); + if (ret) { + info->analogCrop = activeArea_; + LOG(CameraSensor, Warning) + << "The analogue crop rectangle has been defaulted to the active area size"; + } + + /* + * IPACameraSensorInfo::analogCrop::x and IPACameraSensorInfo::analogCrop::y + * are defined relatively to the active pixel area, while V4L2's + * TGT_CROP target is defined in respect to the full pixel array. + * + * Compensate it by subtracting the active area offset. + */ + info->analogCrop.x -= activeArea_.x; + info->analogCrop.y -= activeArea_.y; + + /* The bit depth and image size depend on the currently applied format. */ + V4L2SubdeviceFormat format{}; + ret = subdev_->getFormat(pad_, &format); + if (ret) + return ret; + info->bitsPerPixel = MediaBusFormatInfo::info(format.code).bitsPerPixel; + info->outputSize = format.size; + + std::optional<int32_t> cfa = properties_.get(properties::draft::ColorFilterArrangement); + info->cfaPattern = cfa ? *cfa : properties::draft::RGB; + + /* + * Retrieve the pixel rate, line length and minimum/maximum frame + * duration through V4L2 controls. Support for the V4L2_CID_PIXEL_RATE, + * V4L2_CID_HBLANK and V4L2_CID_VBLANK controls is mandatory. + */ + ControlList ctrls = subdev_->getControls({ V4L2_CID_PIXEL_RATE, + V4L2_CID_HBLANK, + V4L2_CID_VBLANK }); + if (ctrls.empty()) { + LOG(CameraSensor, Error) + << "Failed to retrieve camera info controls"; + return -EINVAL; + } + + info->pixelRate = ctrls.get(V4L2_CID_PIXEL_RATE).get<int64_t>(); + + const ControlInfo hblank = ctrls.infoMap()->at(V4L2_CID_HBLANK); + info->minLineLength = info->outputSize.width + hblank.min().get<int32_t>(); + info->maxLineLength = info->outputSize.width + hblank.max().get<int32_t>(); + + const ControlInfo vblank = ctrls.infoMap()->at(V4L2_CID_VBLANK); + info->minFrameLength = info->outputSize.height + vblank.min().get<int32_t>(); + info->maxFrameLength = info->outputSize.height + vblank.max().get<int32_t>(); + + return 0; +} + +Transform CameraSensorLegacy::computeTransform(Orientation *orientation) const +{ + /* + * If we cannot do any flips we cannot change the native camera mounting + * orientation. + */ + if (!supportFlips_) { + *orientation = mountingOrientation_; + return Transform::Identity; + } + + /* + * Now compute the required transform to obtain 'orientation' starting + * from the mounting rotation. + * + * As a note: + * orientation / mountingOrientation_ = transform + * mountingOrientation_ * transform = orientation + */ + Transform transform = *orientation / mountingOrientation_; + + /* + * If transform contains any Transpose we cannot do it, so adjust + * 'orientation' to report the image native orientation and return Identity. + */ + if (!!(transform & Transform::Transpose)) { + *orientation = mountingOrientation_; + return Transform::Identity; + } + + return transform; +} + +BayerFormat::Order CameraSensorLegacy::bayerOrder(Transform t) const +{ + /* Return a defined by meaningless value for non-Bayer sensors. */ + if (!bayerFormat_) + return BayerFormat::Order::BGGR; + + if (!flipsAlterBayerOrder_) + return bayerFormat_->order; + + /* + * Apply the transform to the native (i.e. untransformed) Bayer order, + * using the rest of the Bayer format supplied by the caller. + */ + return bayerFormat_->transform(t).order; +} + +const ControlInfoMap &CameraSensorLegacy::controls() const +{ + return subdev_->controls(); +} + +ControlList CameraSensorLegacy::getControls(const std::vector<uint32_t> &ids) +{ + return subdev_->getControls(ids); +} + +int CameraSensorLegacy::setControls(ControlList *ctrls) +{ + return subdev_->setControls(ctrls); +} + +int CameraSensorLegacy::setTestPatternMode(controls::draft::TestPatternModeEnum mode) +{ + if (testPatternMode_ == mode) + return 0; + + if (testPatternModes_.empty()) { + LOG(CameraSensor, Error) + << "Camera sensor does not support test pattern modes."; + return -EINVAL; + } + + return applyTestPatternMode(mode); +} + +int CameraSensorLegacy::applyTestPatternMode(controls::draft::TestPatternModeEnum mode) +{ + if (testPatternModes_.empty()) + return 0; + + auto it = std::find(testPatternModes_.begin(), testPatternModes_.end(), + mode); + if (it == testPatternModes_.end()) { + LOG(CameraSensor, Error) << "Unsupported test pattern mode " + << mode; + return -EINVAL; + } + + LOG(CameraSensor, Debug) << "Apply test pattern mode " << mode; + + int32_t index = staticProps_->testPatternModes.at(mode); + ControlList ctrls{ controls() }; + ctrls.set(V4L2_CID_TEST_PATTERN, index); + + int ret = setControls(&ctrls); + if (ret) + return ret; + + testPatternMode_ = mode; + + return 0; +} + +std::string CameraSensorLegacy::logPrefix() const +{ + return "'" + entity_->name() + "'"; +} + +REGISTER_CAMERA_SENSOR(CameraSensorLegacy) + +} /* namespace libcamera */ diff --git a/src/libcamera/sensor/meson.build b/src/libcamera/sensor/meson.build index 61234e95..f0d58897 100644 --- a/src/libcamera/sensor/meson.build +++ b/src/libcamera/sensor/meson.build @@ -2,5 +2,6 @@ libcamera_internal_sources += files([ 'camera_sensor.cpp', + 'camera_sensor_legacy.cpp', 'camera_sensor_properties.cpp', ]) |