Decode from Video Sample - Use DynamsoftCameraEnhancer as Image Source
This sample illustrates how to recognize barcodes from the video streaming. In this sample, you can read how to use DynamsoftCameraEnhancer
to capture the video streaming.
View the sample code
There are some basic concepts that are helpful on understanding the SDK.
CaptureVisionRouter
CaptureVisionRouter
is a router that responsible for retrieving images from the source, coordinating the image processing tasks and dispatching the processing results. To implement a barcode decoding task, what you have to do are:
- Set a standard input for your
CaptureVisionRouter
instance. - Set a result receiver via your
CaptureVisionRouter
instance. - Tell your
CaptureVisionRouter
instance to start working and specify a barcode decoding template with its name. - (Additional) Configure the image processing Parameters to optimize the barcode decoding performance.
Standard Input
Use the setInput
method of the CaptureVisionRouter
to bind an ImageSourceAdapter
(ISA) instance is the simplest way to access to the standard input. CameraEnhancer
is one of the official implementation of the ISA for you to quickly set up the mobile camera as the image source.
Output
To get the output result, you have to implement the CapturedResultReceiver
and bind it with your CaptureVisionRouter
instance. You will receive the barcode decoding results in the onDecodedBarcodesReceived
method each time when a image (video frame) is processed.
Control the Start & Stop of the Capturing
If only one barcode decoding result is required in one scan, you can stop the barcode decoding thread via stopCapturing
method. You can call the startCapturing
at any time when you want to restart the barcode decoding.
- Java
- Kotlin
@Override public void (DecodedBarcodesResult result) { if (result != null && result.getItems() != null && result.getItems().length > 0){ runOnUiThread(() -> mRouter.stopCapturing()); } }
override fun onDecodedBarcodesReceived(result: DecodedBarcodesResult) { if (result?.items != null && result.items.isNotEmpty()) { runOnUiThread { mRouter.stopCapturing() } } }