add support for depth in barcode generations

- Introduced depth parameter to EncodeWithDepth function to allow generating barcodes with specified color depth.
- Updated Encode function to use EncodeWithDepth with a default depth of 16.

twooffive/encoder.go

@@ -78,8 +78,8 @@ func AddCheckSum(content string) (string, error) {
 	return content + string(utils.IntToRune(sum%10)), nil
 }
 
-// Encode creates a codabar barcode for the given content
-func Encode(content string, interleaved bool) (barcode.Barcode, error) {
+// Encode creates a codabar barcode for the given content and depth
+func EncodeWithDepth(content string, interleaved bool, depth int) (barcode.Barcode, error) {
 	if content == "" {
 		return nil, errors.New("content is empty")
 	}
@@ -131,8 +131,13 @@ func Encode(content string, interleaved bool) (barcode.Barcode, error) {
 	resBits.AddBit(mode.end...)
 
 	if interleaved {
-		return utils.New1DCode(barcode.Type2of5Interleaved, content, resBits), nil
+		return utils.New1DCodeWithDepth(barcode.Type2of5Interleaved, content, resBits, depth), nil
 	} else {
-		return utils.New1DCode(barcode.Type2of5, content, resBits), nil
+		return utils.New1DCodeWithDepth(barcode.Type2of5, content, resBits, depth), nil
 	}
 }
+
+// Encode creates a codabar barcode for the given content
+func Encode(content string, interleaved bool) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, interleaved, 16)
+}