From e1b70e764fdeaaf423ec22776100be40e59bb0c3 Mon Sep 17 00:00:00 2001 From: Hirokazu Honda Date: Mon, 6 Dec 2021 14:49:17 +0900 Subject: libcamera: camera_sensor: Enable to set a test pattern mode This adds a function to set a camera sensor driver a test pattern mode. CameraSensor initializes the test pattern mode by Off. Signed-off-by: Hirokazu Honda Reviewed-by: Kieran Bingham Reviewed-by: Laurent Pinchart Signed-off-by: Jacopo Mondi --- src/libcamera/camera_sensor.cpp | 74 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 65 insertions(+), 9 deletions(-) (limited to 'src') diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp index dc871abf..7bb39b1e 100644 --- a/src/libcamera/camera_sensor.cpp +++ b/src/libcamera/camera_sensor.cpp @@ -54,8 +54,8 @@ LOG_DEFINE_CATEGORY(CameraSensor) * Once constructed the instance must be initialized with init(). */ CameraSensor::CameraSensor(const MediaEntity *entity) - : entity_(entity), pad_(UINT_MAX), bayerFormat_(nullptr), - properties_(properties::properties) + : entity_(entity), pad_(UINT_MAX), staticProps_(nullptr), + bayerFormat_(nullptr), properties_(properties::properties) { } @@ -161,7 +161,7 @@ int CameraSensor::init() if (ret) return ret; - return 0; + return applyTestPatternMode(controls::draft::TestPatternModeEnum::TestPatternModeOff); } int CameraSensor::validateSensorDriver() @@ -300,21 +300,30 @@ void CameraSensor::initVimcDefaultProperties() void CameraSensor::initStaticProperties() { - const CameraSensorProperties *props = CameraSensorProperties::get(model_); - if (!props) + staticProps_ = CameraSensorProperties::get(model_); + if (!staticProps_) return; /* Register the properties retrieved from the sensor database. */ - properties_.set(properties::UnitCellSize, props->unitCellSize); + properties_.set(properties::UnitCellSize, staticProps_->unitCellSize); - initTestPatternModes(props->testPatternModes); + initTestPatternModes(); } -void CameraSensor::initTestPatternModes( - const std::map &testPatternModes) +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; @@ -504,6 +513,53 @@ Size CameraSensor::resolution() const * \return The list of test pattern modes */ +/** + * \brief Set the test pattern mode for the camera sensor + * \param[in] mode The test pattern mode + * + * The new \a mode is applied to the sensor if it differs from the active test + * 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; + + return applyTestPatternMode(mode); +} + +int CameraSensor::applyTestPatternMode(controls::draft::TestPatternModeEnum mode) +{ + if (testPatternModes_.empty()) { + LOG(CameraSensor, Error) + << "Camera sensor does not support test pattern modes."; + 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; +} + /** * \brief Retrieve the best sensor format for a desired output * \param[in] mbusCodes The list of acceptable media bus codes -- cgit v1.2.1