From patchwork Sat Jun 4 21:11:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Rauch X-Patchwork-Id: 16171 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id CB2FDC326B for ; Sat, 4 Jun 2022 21:11:56 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id F344E65642; Sat, 4 Jun 2022 23:11:53 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1654377114; bh=pdxfYdSHR5Xzt/Pf3GlruiSWcGkUOHD/rcoIH9xhfJQ=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=PnjZvOnRoDUdke0elCyF8eqcQ50pmCQTW8uyFtYOUB742iWAFhrZ1ZMHKRnJle96D H7B/BsBiqjxXHhHTyp1SeAAI12U79JgBcw7eZ6h7GnOTjtz80Dh7861gNuYmo+ZwJy 4B3Y4dxFw3NyB9pWTmoPW7TTlZ9Z2PLHGYwHvX86meHgolFT6JGCr6u3v9fuxxspfj WE6tCTqAnytZiBmE+cVC8RfWeTFHoGrWdZMFuW+AL1HiGYF0bMctcVG/vUK9sFfQCW 7xVdccHNOsxDmVhy1HIN9IX0zGvnx0qFgQup9Z6FeyEywDqeNWlgW69N1tONFphm40 2lAM/F83cqN5g== Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id E27D9633A6 for ; Sat, 4 Jun 2022 23:11:51 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=gmx.net header.i=@gmx.net header.b="OZnR+jT3"; dkim-atps=neutral DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1654377111; bh=pdxfYdSHR5Xzt/Pf3GlruiSWcGkUOHD/rcoIH9xhfJQ=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=OZnR+jT3SIF/qYyOu4anDQi45a+aheH68gUW/MzFXqiVOpscd0cqCOWjN62CiULAR 5rr4gK1UJ0z5gQLEMe7QoVgvD5/oi1ra4vYnpYOnJxEkGm8n3yN54wZGCo8AFR36pJ MeJYgqylgudn0QybdSJpk3ruDbwnysb+eEjw3J28= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([92.18.80.244]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MHXBj-1o1m3q1Gb3-00DaXS; Sat, 04 Jun 2022 23:11:51 +0200 To: libcamera-devel@lists.libcamera.org Date: Sat, 4 Jun 2022 22:11:44 +0100 Message-Id: <20220604211148.188421-2-Rauch.Christian@gmx.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220604211148.188421-1-Rauch.Christian@gmx.de> References: <20220604211148.188421-1-Rauch.Christian@gmx.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:5AS387TAGgUs/b9TPTkBuhZQa1CTnQjOyuMaoBH7yCWMxu89vo2 VOFDG1Vrtb8GTHoJAnRdH0imVLCMYx3d7me1R4qdnUuUfc0mH0pUxVylTNx6AJPDw38He7N ve0xNUJMW7oFQkRtxRJbQ+A3t6NMaVF5UybRpebIQ//JptZDCzSGbgEkkr3S57vSJttpOzb bqFEOdvBg5zsZsSFBIUZA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:E6YXtxvBayU=:gU6PJxRRj9W5ox71NYn5kR LcRU4V1Q+FBp7aENvg29LpP5vOi4rQ4IYCYe9zbC4hkBfG1NzPuDaQhOC+ke4Job+9tM8wO/A J7hLiDxkyMGAeZ8d9JcWocP3IvayOa3GU2nA9bonPdItf8RHu+VPz+F0SYgD25c8zEvtXOU6M CC256fOaL7/JfWVXiTECKFqanAueKAI7jX2yg6roijTQkhrRSxAYxDJ3AMHj8LcQDCuV+3q9v cEVk2s6b6fFAG9f7xzvddg5DwrtB+6lv83Xh7ICRYupiPfAqP1tgYkJXDmeMaGmYjhmvtKEMU TcW45IvB60q5hKYluxV1YlL++glkrbXkhTker8ZpRtKPuaSJaBVEUaGVHVWxF4xvAM4LaIotC UFvwvpCwk5SH8cl4gtNu6aPLP2Zx0zKnQW0s8Yrb6IuuLJ2eeGXv1SN9qDfo8BZRUhr0oTbHo e+3p2agORI6EC9KffgaFjmeo0oTlkDhZEcprnfFu2S8VjPNMIvhkk2txorkXd2bkUg+n3wAlS 5yiu0R60bMza8WtozccqzUZLZFdUOjDjciy0fmaTHjDvb4KGRExHkAPP+Fl81YVatwAe+W5uE sU5V/4GuCEzHJlJvay32FvLl7NOO93A4kp4TU9c/ucpeS39DfoYC38TMMSAOxQp397GkeJv9E sdgdhUnz5ghbH4cutIJzBsRfDHh82TMKVOk+UoUAzK9+6ztTjBjySeAfK3yS8xgj5SGkUzdpF yK5zVFV1qjEFMTj4lFUwKkbmNK/dvWFCRXjxkWhiSA4MNnl8h28Sv6JVahrgIIq8Z3luUfD/X ITkBJkP/IQG9hPQZlz9YsmfIU1XeFMgAA8T4cMCOpnK9E5/zq/lygNJKzE4AAo39k45ovPOpH 9NadOYobNhuhqXqDxHQZNkNQ6K7aGI4VaQg13jMYA/R0jG7GuBs51cy2aAMHwUHV1yOlAcngp 5YfZKb6RN3aWeK1xr6zfK0D/E+lc55Pyc2QUp6XukrgxzRhGCoQIpIvpqxNLKElXvv1x8dXzZ v4BhLLKvViYumNQ/poliKrlGrhG0xZLy2gAemJPLvuetiMqddQaTfoNLqmLnvpWki4qsJqDqA o0VPrwTqBh9u7Uek2VLTj26Zqb0wB7cRnSAfmTcRrRWlS0t8Yg76/2NkA== Subject: [libcamera-devel] [PATCH v7 1/5] libcamera: controls: Use std::optional to handle invalid control values X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Christian Rauch via libcamera-devel From: Christian Rauch Reply-To: Christian Rauch Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Previously, ControlList::get() would use default constructed objects to indicate that a ControlList does not have the requested Control. This has several disadvantages: 1) It requires types to be default constructible, 2) it does not differentiate between a default constructed object and an object that happens to have the same state as a default constructed object. std::optional additionally stores the information if the object is valid or not, and therefore is more expressive than a default constructed object. Signed-off-by: Christian Rauch Reviewed-by: Jacopo Mondi --- include/libcamera/controls.h | 5 +++-- src/android/camera_capabilities.cpp | 12 +++++----- src/android/camera_device.cpp | 21 +++++++++--------- src/android/camera_hal_manager.cpp | 2 +- src/cam/main.cpp | 4 ++-- src/ipa/raspberrypi/raspberrypi.cpp | 2 +- src/libcamera/pipeline/ipu3/ipu3.cpp | 9 ++++---- .../pipeline/raspberrypi/raspberrypi.cpp | 9 ++++---- src/qcam/dng_writer.cpp | 22 +++++++++---------- 9 files changed, 43 insertions(+), 43 deletions(-) -- 2.34.1 diff --git a/include/libcamera/controls.h b/include/libcamera/controls.h index 665bcac1..192be784 100644 --- a/include/libcamera/controls.h +++ b/include/libcamera/controls.h @@ -8,6 +8,7 @@ #pragma once #include +#include #include #include #include @@ -373,11 +374,11 @@ public: bool contains(unsigned int id) const; template - T get(const Control &ctrl) const + std::optional get(const Control &ctrl) const { const ControlValue *val = find(ctrl.id()); if (!val) - return T{}; + return std::nullopt; return val->get(); } diff --git a/src/android/camera_capabilities.cpp b/src/android/camera_capabilities.cpp index 6f197eb8..5304b2da 100644 --- a/src/android/camera_capabilities.cpp +++ b/src/android/camera_capabilities.cpp @@ -1042,7 +1042,7 @@ int CameraCapabilities::initializeStaticMetadata() /* Sensor static metadata. */ std::array pixelArraySize; { - const Size &size = properties.get(properties::PixelArraySize); + const Size &size = properties.get(properties::PixelArraySize).value_or(Size{}); pixelArraySize[0] = size.width; pixelArraySize[1] = size.height; staticMetadata_->addEntry(ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE, @@ -1050,10 +1050,10 @@ int CameraCapabilities::initializeStaticMetadata() } if (properties.contains(properties::UnitCellSize)) { - const Size &cellSize = properties.get(properties::UnitCellSize); + const auto &cellSize = properties.get(properties::UnitCellSize); std::array physicalSize{ - cellSize.width * pixelArraySize[0] / 1e6f, - cellSize.height * pixelArraySize[1] / 1e6f + cellSize->width * pixelArraySize[0] / 1e6f, + cellSize->height * pixelArraySize[1] / 1e6f }; staticMetadata_->addEntry(ANDROID_SENSOR_INFO_PHYSICAL_SIZE, physicalSize); @@ -1061,7 +1061,7 @@ int CameraCapabilities::initializeStaticMetadata() { const Span &rects = - properties.get(properties::PixelArrayActiveAreas); + properties.get(properties::PixelArrayActiveAreas).value_or(Span{}); std::vector data{ static_cast(rects[0].x), static_cast(rects[0].y), @@ -1080,7 +1080,7 @@ int CameraCapabilities::initializeStaticMetadata() /* Report the color filter arrangement if the camera reports it. */ if (properties.contains(properties::draft::ColorFilterArrangement)) { - uint8_t filterArr = properties.get(properties::draft::ColorFilterArrangement); + uint8_t filterArr = *properties.get(properties::draft::ColorFilterArrangement); staticMetadata_->addEntry(ANDROID_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT, filterArr); } diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp index 8e804d4d..ec117101 100644 --- a/src/android/camera_device.cpp +++ b/src/android/camera_device.cpp @@ -305,7 +305,7 @@ int CameraDevice::initialize(const CameraConfigData *cameraConfigData) const ControlList &properties = camera_->properties(); if (properties.contains(properties::Location)) { - int32_t location = properties.get(properties::Location); + int32_t location = *properties.get(properties::Location); switch (location) { case properties::CameraLocationFront: facing_ = CAMERA_FACING_FRONT; @@ -355,7 +355,7 @@ int CameraDevice::initialize(const CameraConfigData *cameraConfigData) * metadata. */ if (properties.contains(properties::Rotation)) { - int rotation = properties.get(properties::Rotation); + int rotation = *properties.get(properties::Rotation); orientation_ = (360 - rotation) % 360; if (cameraConfigData && cameraConfigData->rotation != -1 && orientation_ != cameraConfigData->rotation) { @@ -1094,7 +1094,8 @@ void CameraDevice::requestComplete(Request *request) * as soon as possible, earlier than request completion time. */ uint64_t sensorTimestamp = static_cast(request->metadata() - .get(controls::SensorTimestamp)); + .get(controls::SensorTimestamp) + .value_or(0)); notifyShutter(descriptor->frameNumber_, sensorTimestamp); LOG(HAL, Debug) << "Request " << request->cookie() << " completed with " @@ -1473,29 +1474,28 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons rolling_shutter_skew); /* Add metadata tags reported by libcamera. */ - const int64_t timestamp = metadata.get(controls::SensorTimestamp); + const int64_t timestamp = metadata.get(controls::SensorTimestamp).value_or(0); resultMetadata->addEntry(ANDROID_SENSOR_TIMESTAMP, timestamp); if (metadata.contains(controls::draft::PipelineDepth)) { - uint8_t pipeline_depth = - metadata.get(controls::draft::PipelineDepth); + uint8_t pipeline_depth = *metadata.get(controls::draft::PipelineDepth); resultMetadata->addEntry(ANDROID_REQUEST_PIPELINE_DEPTH, pipeline_depth); } if (metadata.contains(controls::ExposureTime)) { - int64_t exposure = metadata.get(controls::ExposureTime) * 1000ULL; + int64_t exposure = *metadata.get(controls::ExposureTime) * 1000ULL; resultMetadata->addEntry(ANDROID_SENSOR_EXPOSURE_TIME, exposure); } if (metadata.contains(controls::FrameDuration)) { - int64_t duration = metadata.get(controls::FrameDuration) * 1000; + int64_t duration = *metadata.get(controls::FrameDuration) * 1000; resultMetadata->addEntry(ANDROID_SENSOR_FRAME_DURATION, duration); } if (metadata.contains(controls::ScalerCrop)) { - Rectangle crop = metadata.get(controls::ScalerCrop); + Rectangle crop = *metadata.get(controls::ScalerCrop); int32_t cropRect[] = { crop.x, crop.y, static_cast(crop.width), static_cast(crop.height), @@ -1504,8 +1504,7 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons } if (metadata.contains(controls::draft::TestPatternMode)) { - const int32_t testPatternMode = - metadata.get(controls::draft::TestPatternMode); + const int32_t testPatternMode = *metadata.get(controls::draft::TestPatternMode); resultMetadata->addEntry(ANDROID_SENSOR_TEST_PATTERN_MODE, testPatternMode); } diff --git a/src/android/camera_hal_manager.cpp b/src/android/camera_hal_manager.cpp index 5f7bfe26..0bffe96f 100644 --- a/src/android/camera_hal_manager.cpp +++ b/src/android/camera_hal_manager.cpp @@ -232,7 +232,7 @@ int32_t CameraHalManager::cameraLocation(const Camera *cam) if (!properties.contains(properties::Location)) return -1; - return properties.get(properties::Location); + return *properties.get(properties::Location); } CameraDevice *CameraHalManager::cameraDeviceFromHalId(unsigned int id) diff --git a/src/cam/main.cpp b/src/cam/main.cpp index 79875ed7..d8115cd8 100644 --- a/src/cam/main.cpp +++ b/src/cam/main.cpp @@ -301,7 +301,7 @@ std::string CamApp::cameraName(const Camera *camera) * is only used if the location isn't present or is set to External. */ if (props.contains(properties::Location)) { - switch (props.get(properties::Location)) { + switch (*props.get(properties::Location)) { case properties::CameraLocationFront: addModel = false; name = "Internal front camera "; @@ -321,7 +321,7 @@ std::string CamApp::cameraName(const Camera *camera) * If the camera location is not availble use the camera model * to build the camera name. */ - name = "'" + props.get(properties::Model) + "' "; + name = "'" + *props.get(properties::Model) + "' "; } name += "(" + camera->id() + ")"; diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp index 3b126bb5..f65a0680 100644 --- a/src/ipa/raspberrypi/raspberrypi.cpp +++ b/src/ipa/raspberrypi/raspberrypi.cpp @@ -939,7 +939,7 @@ void IPARPi::returnEmbeddedBuffer(unsigned int bufferId) void IPARPi::prepareISP(const ISPConfig &data) { - int64_t frameTimestamp = data.controls.get(controls::SensorTimestamp); + int64_t frameTimestamp = data.controls.get(controls::SensorTimestamp).value_or(0); RPiController::Metadata lastMetadata; Span embeddedBuffer; diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp index fd989e61..9d9ea138 100644 --- a/src/libcamera/pipeline/ipu3/ipu3.cpp +++ b/src/libcamera/pipeline/ipu3/ipu3.cpp @@ -1145,7 +1145,7 @@ int PipelineHandlerIPU3::registerCameras() /* Convert the sensor rotation to a transformation */ int32_t rotation = 0; if (data->properties_.contains(properties::Rotation)) - rotation = data->properties_.get(properties::Rotation); + rotation = *(data->properties_.get(properties::Rotation)); else LOG(IPU3, Warning) << "Rotation control not exposed by " << cio2->sensor()->id() @@ -1331,7 +1331,7 @@ void IPU3CameraData::imguOutputBufferReady(FrameBuffer *buffer) request->metadata().set(controls::draft::PipelineDepth, 3); /* \todo Actually apply the scaler crop region to the ImgU. */ if (request->controls().contains(controls::ScalerCrop)) - cropRegion_ = request->controls().get(controls::ScalerCrop); + cropRegion_ = *(request->controls().get(controls::ScalerCrop)); request->metadata().set(controls::ScalerCrop, cropRegion_); if (frameInfos_.tryComplete(info)) @@ -1424,7 +1424,7 @@ void IPU3CameraData::statBufferReady(FrameBuffer *buffer) return; } - ipa_->processStatsBuffer(info->id, request->metadata().get(controls::SensorTimestamp), + ipa_->processStatsBuffer(info->id, request->metadata().get(controls::SensorTimestamp).value_or(0), info->statBuffer->cookie(), info->effectiveSensorControls); } @@ -1458,8 +1458,7 @@ void IPU3CameraData::frameStart(uint32_t sequence) if (!request->controls().contains(controls::draft::TestPatternMode)) return; - const int32_t testPatternMode = request->controls().get( - controls::draft::TestPatternMode); + const int32_t testPatternMode = *(request->controls().get(controls::draft::TestPatternMode)); int ret = cio2_.sensor()->setTestPatternMode( static_cast(testPatternMode)); diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp index adc397e8..a62afdd4 100644 --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp @@ -365,7 +365,7 @@ CameraConfiguration::Status RPiCameraConfiguration::validate() * error means the platform can never run. Let's just print a warning * and continue regardless; the rotation is effectively set to zero. */ - int32_t rotation = data_->sensor_->properties().get(properties::Rotation); + int32_t rotation = data_->sensor_->properties().get(properties::Rotation).value_or(0); bool success; Transform rotationTransform = transformFromRotation(rotation, &success); if (!success) @@ -1706,7 +1706,8 @@ void RPiCameraData::statsMetadataComplete(uint32_t bufferId, const ControlList & * V4L2_CID_NOTIFY_GAINS control (which means notifyGainsUnity_ is set). */ if (notifyGainsUnity_ && controls.contains(libcamera::controls::ColourGains)) { - libcamera::Span colourGains = controls.get(libcamera::controls::ColourGains); + libcamera::Span colourGains = + *controls.get(libcamera::controls::ColourGains); /* The control wants linear gains in the order B, Gb, Gr, R. */ ControlList ctrls(sensor_->controls()); std::array gains{ @@ -2041,7 +2042,7 @@ Rectangle RPiCameraData::scaleIspCrop(const Rectangle &ispCrop) const void RPiCameraData::applyScalerCrop(const ControlList &controls) { if (controls.contains(controls::ScalerCrop)) { - Rectangle nativeCrop = controls.get(controls::ScalerCrop); + Rectangle nativeCrop = *controls.get(controls::ScalerCrop); if (!nativeCrop.width || !nativeCrop.height) nativeCrop = { 0, 0, 1, 1 }; @@ -2079,7 +2080,7 @@ void RPiCameraData::fillRequestMetadata(const ControlList &bufferControls, Request *request) { request->metadata().set(controls::SensorTimestamp, - bufferControls.get(controls::SensorTimestamp)); + bufferControls.get(controls::SensorTimestamp).value_or(0)); request->metadata().set(controls::ScalerCrop, scalerCrop_); } diff --git a/src/qcam/dng_writer.cpp b/src/qcam/dng_writer.cpp index 34c8df5a..4b5d8276 100644 --- a/src/qcam/dng_writer.cpp +++ b/src/qcam/dng_writer.cpp @@ -392,7 +392,7 @@ int DNGWriter::write(const char *filename, const Camera *camera, TIFFSetField(tif, TIFFTAG_MAKE, "libcamera"); if (cameraProperties.contains(properties::Model)) { - std::string model = cameraProperties.get(properties::Model); + std::string model = *cameraProperties.get(properties::Model); TIFFSetField(tif, TIFFTAG_MODEL, model.c_str()); /* \todo set TIFFTAG_UNIQUECAMERAMODEL. */ } @@ -438,16 +438,15 @@ int DNGWriter::write(const char *filename, const Camera *camera, const double eps = 1e-2; if (metadata.contains(controls::ColourGains)) { - Span const &colourGains = metadata.get(controls::ColourGains); - if (colourGains[0] > eps && colourGains[1] > eps) { - wbGain = Matrix3d::diag(colourGains[0], 1, colourGains[1]); - neutral[0] = 1.0 / colourGains[0]; /* red */ - neutral[2] = 1.0 / colourGains[1]; /* blue */ + const auto &colourGains = metadata.get(controls::ColourGains); + if ((*colourGains)[0] > eps && (*colourGains)[1] > eps) { + wbGain = Matrix3d::diag((*colourGains)[0], 1, (*colourGains)[1]); + neutral[0] = 1.0 / (*colourGains)[0]; /* red */ + neutral[2] = 1.0 / (*colourGains)[1]; /* blue */ } } if (metadata.contains(controls::ColourCorrectionMatrix)) { - Span const &coeffs = metadata.get(controls::ColourCorrectionMatrix); - Matrix3d ccmSupplied(coeffs); + Matrix3d ccmSupplied(*metadata.get(controls::ColourCorrectionMatrix)); if (ccmSupplied.determinant() > eps) ccm = ccmSupplied; } @@ -515,7 +514,8 @@ int DNGWriter::write(const char *filename, const Camera *camera, uint32_t whiteLevel = (1 << info->bitsPerSample) - 1; if (metadata.contains(controls::SensorBlackLevels)) { - Span levels = metadata.get(controls::SensorBlackLevels); + Span levels = + *metadata.get(controls::SensorBlackLevels); /* * The black levels control is specified in R, Gr, Gb, B order. @@ -593,13 +593,13 @@ int DNGWriter::write(const char *filename, const Camera *camera, TIFFSetField(tif, EXIFTAG_DATETIMEDIGITIZED, strTime); if (metadata.contains(controls::AnalogueGain)) { - float gain = metadata.get(controls::AnalogueGain); + float gain = *metadata.get(controls::AnalogueGain); uint16_t iso = std::min(std::max(gain * 100, 0.0f), 65535.0f); TIFFSetField(tif, EXIFTAG_ISOSPEEDRATINGS, 1, &iso); } if (metadata.contains(controls::ExposureTime)) { - float exposureTime = metadata.get(controls::ExposureTime) / 1e6; + float exposureTime = *metadata.get(controls::ExposureTime) / 1e6; TIFFSetField(tif, EXIFTAG_EXPOSURETIME, exposureTime); }