Resource Base
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Javascript API Reference - BarcodeScanner Interfaces
| Interface | Description |
|---|---|
FrameFilter |
Filter and discard video frames while focusing. |
ScannerPlayCallbackInfo |
Stores the height and width constraints of the video stream. |
ScanSettings |
Configures the video stream settings. |
VideoDeviceInfo |
Stores the video device information. |
FrameFilter
Filter and discard video frames that are out of focus during the scanning operation.
Properties
| Property | Type | Default Value | Description |
|---|---|---|---|
| regionoptional | RegionDefinition |
<pre>{ regionLeft = 0, regionRight = 100, regionTop = 0, regionBottom = 100, regionMeasuredByPercentage = true }</pre> |
Detecting area of a frame. |
| thresholdoptional | number | 0.1 |
Threshold used for filtering images. Value range: [0, 1]. An indicator is calculated for each frame from AppendFrame(). If the change rate of the indicators between the current frame and historic frames is larger than this threshold, the current frame will be discarded. |
ScannerPlayCallbackInfo
Stores the height and width constraints of the video stream.
Properties
| Property | Type | Description |
|---|---|---|
| height | number | The height of the video. |
| width | number | The width of the video. |
ScanSettings
Configures the video stream settings. Previously known as ScannerConfig.
Properties
| Property | Type | Default Value | Description |
|---|---|---|---|
| duplicateForgetTimeoptional | number | 3000 |
Ignore duplicated results found in the specified time period. Measured in ms. |
| frameFilteroptional | FrameFilter |
Filter and discard video frames that are out of focus. | |
| intervalTimeoptional | number | 100 |
Scan interval used to allow the library to release the CPU periodically. Measured in ms. |
VideoDeviceInfo
Stores the video device information.
Properties
| Property | Type | Description |
|---|---|---|
deviceId |
string | Identifier for the represented device that is persisted across sessions. It is un-guessable by other applications and unique to the origin of the calling application. It is reset when the user clears cookies. |
label |
string | The label describing the device. |
Yes
No