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CameraCaptureThe CameraCapture type provides an interface for capturing camera images More... Inherits QtObject Signals
Methods
Detailed DescriptionThis type allows you to capture still images and be notified when they are available or saved to disk. You can adjust the resolution of the captured image and where the saved image should go. CameraCapture is a child of a Camera (as the imageCapture property) and cannot be created directly. import QtQuick 2.0 import QtMultimedia 5.0 Item { width: 640 height: 360 Camera { id: camera imageCapture { onImageCaptured: { // Show the preview in an Image photoPreview.source = preview } } } VideoOutput { source: camera focus : visible // to receive focus and capture key events when visible anchors.fill: parent MouseArea { anchors.fill: parent; onClicked: camera.imageCapture.capture(); } } Image { id: photoPreview } } Signal DocumentationThis handler is called when an error occurs during capture with requestId. A descriptive message is available in message. This handler is called when an image with requestId has been captured but not yet saved to the filesystem. The preview parameter can be used as the URL supplied to an Image. See also onImageSaved. This handler is called when the image with requestId has new metadata available with the key key and value value. See also onImageCaptured. This handler is called after the image with requestId has been written to the filesystem. The path is a local file path, not a URL. See also onImageCaptured. Method DocumentationStart image capture. The onImageCaptured() and onImageSaved() signals will be emitted when the capture is complete. The image will be captured to the default system location, typically QStandardPaths::writableLocation(QStandardPaths::PicturesLocation) for still imaged or QStandardPaths::writableLocation(QStandardPaths::MoviesLocation) for video. Camera saves all the capture parameters like exposure settings or image processing parameters, so changes to camera paramaters after capture() is called do not affect previous capture requests. CameraCapture::capture returns the capture requestId parameter, used with imageExposed(), imageCaptured(), imageMetadataAvailable() and imageSaved() signals. Start image capture to specified location. The onImageCaptured() and onImageSaved() signals will be emitted when the capture is complete. CameraCapture::captureToLocation returns the capture requestId parameter, used with imageExposed(), imageCaptured(), imageMetadataAvailable() and imageSaved() signals. If the application is unable to write to the location specified by location the CameraCapture will emit an error. The most likely reasons for the application to be unable to write to a location is that the path is wrong and the location does not exists, or the application does not have write permission for that location. Sets a particular metadata key to value for the subsequent image captures. See also QtMultimedia::MetaData. |
