Open Radar

 
Summary:
It would be beneficial to be able to scan codabar barcodes.

It would be nice to have the following:
- codabar available in the AVCaptureMetadataOutput availableMetadataObjectTypes
- codabar as a metadataObjectType that can be added to the AVCaptureMetadataOutput metatdataObjectTypes
- Have AVCaptureMetadataOutputObjectsDelegate’s captureOutput delegate function’s metadataObjects include codabar metadata
- Have codabar as a NSString const* AVMetadataObjectType for comparison against an AVMetadataObject type
- Have an AVMetadataMachineReadableCodeObject for codabar barcode types
- Be able to transform codabar metadata objects with AVMetadataMachineReadableCodeObject so we can acquire the barcode string

Steps to Reproduce:
1. self.session = [[AVCaptureSession alloc] init];
2. self.device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
3. NSError* our_error;
self.input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:&our_error];
[self.session addInput:self.input];
4. self.output = [[AVCaptureMetadataOutput alloc] init];
[self.output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
[self.session addOutput:self.output];
self.output.metadataObjectTypes = [self.output availableMetadataObjectTypes]; ****Would like codabar available here****
5. Blah blah preview
6. - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection { ****Would like codabar returned in metadataObjects
7. NSArray* barcodeTypes = @[AVMetadataObjectTypeUPCECode, AVMetadataObjectTypeCode39Code, etc, etc]; ****Would like codabar as an option, like AVMetadataObjectTypeCodabarCode or similar****
8. for (AVMetadataObject* metadata in metadataObjects) {
  for (NSString* type in barcodeTypes) {
    if ([metadata.type isEqualToString:type]) {
      barcodeObject = (AVMetadataMachineReadableCodeObject *) [self.preview_layer transformedMetadataObjectForMetadataObject:(AVMetadataMachineReadableCodeObject*)metadata];
      detectionString = [(AVMetadataMachineReadableCodeObject*) metadata stringValue]; ****Would like to get the codabar barcode result here****
      break;
    }
  }
}

Expected Results:
Codabar as a barcode type and scanning to acquire the barcode value from the image.

Actual Results:
Codabar is not available as a barcode type. Attempts to scan a codabar barcode are unsuccessful.