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Dynamsoft Camera Enhancer JavaScript API Reference
Class CameraEnhancer
Create and Destroy Instances
| Name | Description |
|---|---|
static createInstance() |
Creates a CameraEnhancer instance. |
| dispose() | Releases all resources used by the CameraEnhancer instance. |
| disposed | A readonly boolean value indicating whether the CameraEnhancer instance has been disposed. |
Basic Camera Control
| Name | Description |
|---|---|
static testCameraAccess() |
Tests whether there is an available camera. |
| getAllCameras() | Returns information of all available cameras on the device. |
| selectCamera() | Chooses a camera as the video source. |
| getSelectedCamera() | Returns information about the selected / current camera. |
| getCameraState() | Returns the state of the selected camera which could be “opening”, “open” or “closed” |
| open() | Turn on the camera to start streaming live video. |
| close() | Stops video streaming and releases the camera. |
| isOpen() | Returns whether the selected camera is turned on / occupied. |
| pause() | Pauses video streaming without releasing the camera. |
| isPaused() | Returns whether the video streaming is paused. |
| resume() | Resumes video streaming. |
| getVideoSettings() | Returns the current video settings. |
| updateVideoSettings() | Changes the video input. |
| setResolution() | Sets the resolution of the selected camera. |
| getResolution() | Returns the resolution of the selected camera. |
| getAvailableResolutions() | Returns the resolutions supported by the selected camera. |
| ifSaveLastUsedCamera | Returns or sets whether to save the last used camera and resolution. |
| videoSrc | Sets or returns the source of the video. |
| ifSkipCameraInspection | Whether to opt for an optimal rear camera at the first open(). |
Advanced Camera Control
| Name | Description |
|---|---|
| setFrameRate() | Adjusts the frame rate. |
| getFrameRate() | Returns the real-time frame rate. |
| turnOnTorch() | Turns on the torch/flashlight if the current camera supports it. |
| turnOffTorch() | Turns off the torch/flashlight. |
| getZoomSettings() | Returns the zoom settings. |
| setZoom() | Zooms the video stream. |
| resetZoom() | Resets the zoom level of the video. |
| getFocusSettings() | Returns the focus settings. |
| setFocus() | Sets how the camera focuses. |
| getCapabilities() | Inspects and returns the capabilities of the selected camera. |
| getCameraSettings() | Returns the current values for each constrainable property of the selected camera. |
| getColorTemperature() | Returns the color temperature of the selected camera. |
| setColorTemperature() | Adjusts the color temperature of the selected camera. |
| getExposureCompensation() | Returns the exposure compensation index of the selected camera. |
| setExposureCompensation() | Sets the exposure compensation index of the selected camera. |
| setAutoZoomRange() | Sets the range (minimum to maximum) for zoom when it is done automatically. |
| getAutoZoomRange() | Returns the auto zoom range. |
| enableEnhancedFeatures() | Enables the specified enhanced features. |
| disableEnhancedFeatures() | Disables the specified enhanced features. |
Frame Acquisition
| Name | Description |
|---|---|
| setScanRegion() | Specifies which part of the original video is considered when processing frames. |
| getScanRegion() | Returns the scan region. |
| fetchImage() | Returns a DCEFrame object which contains the image data of the latest frame from the video input. |
| addImageToBuffer() | Adds an DSImageData object to the buffer. |
| setImageFetchInterval() | Sets the interval at which fetchImage() is called when continued fetching has started. |
| getImageFetchInterval() | Returns the fetch interval. |
| startFetching() | Starts to continuously fetch images and put them into the buffer. |
| stopFetching() | Stops fetching any more images. |
| setMaxImageCount() | Sets the size of the buffer as in how many images can be buffered. |
| getMaxImageCount() | Returns the size of the buffer. |
| getImageCount() | Returns how many images are in buffer. |
| hasImage() | Checks whether an image exists. The image is specified by its id. |
| getImage() | Returns a DCEFrame object from the buffer. |
| setNextImageToReturn() | Specifies an image by its id to be returned when getImage() is called the next time. |
| setBufferOverflowProtectionMode() | Sets a protection mode that determines what happens when the buffer overflows. |
| getBufferOverflowProtectionMode() | Returns the buffer protection mode. |
| isBufferEmpty() | Returns whether the buffer is empty. |
| hasNextImageToFetch() | Checks whether another image can be fetched. In other words, whether the video is still streaming. |
| setPixelFormat() | Sets the pixel format of the images returned by getImage(). |
| singleFrameMode | Returns or sets whether to enable the singe-frame mode. |
| takePhoto() | Invokes the system camera to take a frame with better image quality. |
UI
| Name | Description |
|---|---|
| getCameraView | Returns the CameraView instance used by the CameraEnhancer instance. |
| setCameraView | Sets a CameraView instance to be used by the CameraEnhancer instance. |
| getVideoEl | Returns the video element used by the CameraView instance. |
| convertToPageCoordinates() | Converts coordinates of a point to the coordinates relative to the top left point of the entire document. |
| convertToClientCoordinates() | Converts coordinates of a point to the coordinates within the application’s viewport at which the event occurred (as opposed to the coordinate within the page). |
Auxiliary
| Name | Description |
|---|---|
| on() | Attaches an event handler function for a built-in event. |
| off() | Removes an event handler. |
| offAll() | Removes all event handlers from the specified event. If no event is specified, remove all event handlers. |
| detectEnvironment() | Returns a report on the current running environments. |
Class CameraView
Create and Destroy Instances
| Name | Description |
|---|---|
static createInstance() |
Creates a CameraView instance. |
| dispose() | Releases all resources used by the CameraView instance. |
| disposed | A readonly boolean value indicating whether the CameraView instance has been disposed. |
| getUIElement() | Returns the HTML element that is used by the CameraView instance. |
| setUIElement() | Specifies an HTML element for the CameraView instance to use as its UI element. |
Drawing and UI
| Name | Description |
|---|---|
| createDrawingLayer() | Creates a DrawingLayer object and put it in an array of DrawingLayers. |
| getDrawingLayer() | Gets the DrawingLayer specified by its ID. |
| getAllDrawingLayers() | Returns an array of all DrawingLayer objects. |
| deleteUserDefinedDrawingLayer() | Deletes a DrawingLayer object specified by its ID. |
| clearUserDefinedDrawingLayers() | Removes all user-defined DrawingLayers. |
| clearAllInnerDrawingItems() | Removes all automatically added DrawingItems. |
| setTipConfig() | Configures the tip feature. |
| getTipConfig() | Returns the configuration of the tip. |
| setTipVisible() | Sets whether to show the tip. |
| isTipVisible() | Returns whether the tip is visible. |
| setVideoFit() | Sets the object-fit CSS property of the video element. |
| getVideoFit() | Returns the value of the object-fit CSS property of the video element. |
| updateTipMessage() | Updates the message shown in the tip. |
| getVisibleRegionOfVideo() | Returns a Region object which specifies which part of the original video is shown in the video element. |
| getVideoElement() | Returns the video element used by the CameraView instance. |
| setScanRegionMaskStyle() | Sets the drawing style for the scan-region mask. |
| getScanRegionMaskStyle() | Returns the drawing style for the scan-region mask. |
| setScanRegionMaskVisible() | Sets whether to show the scan-region mask. |
| isScanRegionMaskVisible() | Returns whether the scan-region mask is visible. |
| setScanLaserVisible() | Sets whether to show the laser that indicates the scanning is going on. |
| isScanLaserVisible() | Returns whether the laser is visible. |
Class ImageEditorView
Create and Destroy Instances
| Name | Description |
|---|---|
static createInstance() |
Creates an ImageEditorView instance. |
| dispose() | Releases all resources used by the ImageEditorView instance. |
| disposed | A readonly boolean value indicating whether the ImageEditorView instance has been disposed. |
| getUIElement() | Returns the HTML element that is used by the ImageEditorView instance. |
| setUIElement() | Specifies an HTML element for the ImageEditorView instance to use as its UI element. |
Drawing and UI
| Name | Description |
|---|---|
| createDrawingLayer() | Creates a DrawingLayer object and put it in an array of DrawingLayers. |
| getDrawingLayer() | Gets the DrawingLayer specified by its ID. |
| getAllDrawingLayers() | Returns an array of all DrawingLayer objects. |
| deleteUserDefinedDrawingLayer() | Deletes a DrawingLayer object specified by its ID. |
| clearUserDefinedDrawingLayers() | Removes all user-defined DrawingLayers. |
| getSelectedDrawingItems() | Returns the selected DrawingItem object(s). |
| setOriginalImage() | Sets the image to be drawn on the image editor view. |
| getOriginalImage() | Returns the image drawn on the image editor. |
Class CameraEnhancerModule
| Name | Description |
|---|---|
| getVersion() | Returns the version of the CameraEnhancer Module. |
Subordinate Classes
Feedback
| Name | Description |
|---|---|
| beep() | Trigger a beep when the method is called. |
| vibrate() | Trigger a vibrate when the method is called. |
DrawingLayer
| Name | Description |
|---|---|
| getId() | Returns the ID of the DrawingLayer. |
| addDrawingItems() | Adds DrawingItems to the DrawingLayer. |
| getDrawingItems() | Returns all DrawingItems or just some of them based on a filter function. |
| setDrawingItems() | Replaces all DrawingItems of the DrawingLayer with new ones. |
| hasDrawingItem() | Checks out if a DrawingItem belongs to the layer. |
| removeDrawingItems() | Removes DrawingItems from the DrawingLayer. |
| clearDrawingItems() | Removes all DrawingItems from the DrawingLayer. |
| renderAll() | Renders all DrawingItems, usually required when the style for one or more items is changed. |
| setDefaultStyle() | Sets the style for DrawingItems on the layer. |
| setVisible() | Shows or hides the DrawingLayer. |
| isVisible() | Returns whether the DrawingLayer is visible. |
| onSelectionChanged() | An event handler that is triggered when different DrawingItems gets selected/deselected on the DrawingLayer. |
DrawingStyleManager
| Name | Description |
|---|---|
static createDrawingStyle() |
Creates a new DrawingStyle object and returns its ID. |
static getDrawingStyle() |
Returns the DrawingStyle object specified by its Id. |
static getDrawingStyles() |
Returns all DrawingStyle objects. |
static updateDrawingStyle() |
Updates an existing DrawingStyle specified by its ID. |
DrawingItem
| Name | Description |
|---|---|
| drawingLayerId | Returns the id of a DrawingLayer where the DrawingItem is drawn. |
| mediaType | Returns the mediaType of the DrawingItem. |
| coordinateBase | Sets or returns the coordinateBase which determines the meaning of the coordinates of the DrawingItem. |
| drawingStyleId | Sets or returns the id of the DrawingStyle that applies to the DrawingItem. |
| getState() | Returns the state of the DrawingItem. |
| on | Adds an event listener to the DrawingItem for the event specified by eventName. |
| off | Removes an event listener to the DrawingItem for the event specified by eventName. |
| addNote() | Adds a Note to this DrawingItem. |
| getNote() | Returns a Note specified by its name. |
| hasNote() | Returns whether a Note with the specified name exists on this DrawingItem. |
| updateNote() | Updates the content of a Note specified by its name. |
| deleteNote() | Deletes a Note specified by its name. |
| getAllNotes() | Returns all Notes on the DrawingItem. |
| clearNotes() | Deletes all Notes on the DrawingItem. |
Child classes based on DrawingItem
LineDrawingItem
| Name | Description |
|---|---|
| LineDrawingItem() | Constructor of a LineDrawingItem. |
| getLine | Returns the LineSegment object the item is based on. |
| setLine | Specifies a LineSegment object to be used for drawing the line. |
RectDrawingItem
| Name | Description |
|---|---|
| RectDrawingItem() | Constructor of a RectDrawingItem. |
| getRect | Returns the Rect object the item is based on. |
| setRect | Specifies a Rect object to be used for drawing the item. |
QuadDrawingItem
| Name | Description |
|---|---|
| QuadDrawingItem() | Constructor of a QuadDrawingItem. |
| getQuad | Returns the Quadrilateral object the item is based on. |
| setQuad | Specifies a Quadrilateral object to be used for drawing the item. |
TextDrawingItem
| Name | Description |
|---|---|
| TextDrawingItem() | Constructor of a TextDrawingItem. |
| getText | Returns the text drawn. |
| setText | Specifies the text to draw. |
| getTextRect | Returns the Rect object which determines where the text is drawn. |
| setTextRect | Specifies a Rect object in which the text is drawn. |
ImageDrawingItem
| Name | Description |
|---|---|
| ImageDrawingItem() | Constructor of an ImageDrawingItem. |
| getImage | Returns the image drawn. |
| setImage | Specifies the image to draw. |
| getImageRect | Returns the Rect object which determines where the image is drawn. |
| setImageRect | Specifies a Rect object in which the image is drawn. |
Interfaces
- DCEFrame
- DrawingItemEvent
- DrawingStyle
- Note
- PlayCallbackInfo
- Resolution
- Point
- Region
- TipConfig
- VideoDevice
- VideoFrameTag
Yes
No