-/*\r
+/*\r
+* Copyright 2007 ZXing authors\r
+*\r
* Licensed under the Apache License, Version 2.0 (the "License");\r
* you may not use this file except in compliance with the License.\r
* You may obtain a copy of the License at\r
* See the License for the specific language governing permissions and\r
* limitations under the License.\r
*/\r
-\r
using System;\r
-using System.Collections;\r
-using com.google.zxing.qrcode;\r
-using com.google.zxing.oned;\r
-\r
+using MultiFormatOneDReader = com.google.zxing.oned.MultiFormatOneDReader;\r
+using PDF417Reader = com.google.zxing.pdf417.PDF417Reader;\r
+using QRCodeReader = com.google.zxing.qrcode.QRCodeReader;\r
+using DataMatrixReader = com.google.zxing.datamatrix.DataMatrixReader;\r
namespace com.google.zxing\r
{\r
- public sealed class MultiFormatReader : Reader\r
- { \r
- private Hashtable hints;\r
- private ArrayList readers;\r
-\r
- /**\r
- * This version of decode honors the intent of Reader.decode(MonochromeBitmapSource) in that it\r
- * passes null as a hint to the decoders. However, that makes it inefficient to call repeatedly.\r
- * Use setHints() followed by decodeWithState() for continuous scan applications.\r
- *\r
- * @param image The pixel data to decode\r
- * @return The contents of the image\r
- * @throws ReaderException Any errors which occurred\r
- */\r
- public Result decode(MonochromeBitmapSource image){\r
- try{\r
- setHints(null);\r
- return decodeInternal(image);\r
- }\r
- catch(Exception e){\r
- throw new ReaderException(e.Message);\r
- } \r
- }\r
-\r
- /**\r
- * Decode an image using the hints provided. Does not honor existing state.\r
- *\r
- * @param image The pixel data to decode\r
- * @param hints The hints to use, clearing the previous state.\r
- * @return The contents of the image\r
- * @throws ReaderException Any errors which occurred\r
- */\r
- public Result decode(MonochromeBitmapSource image, Hashtable hints){\r
- try{\r
- setHints(hints);\r
- return decodeInternal(image);\r
- }catch(Exception e){\r
- throw new ReaderException (e.Message);\r
- } \r
- }\r
-\r
- /**\r
- * Decode an image using the state set up by calling setHints() previously. Continuous scan\r
- * clients will get a <b>large</b> speed increase by using this instead of decode().\r
- *\r
- * @param image The pixel data to decode\r
- * @return The contents of the image\r
- * @throws ReaderException Any errors which occurred\r
- */\r
- public Result decodeWithState(MonochromeBitmapSource image){\r
- try{\r
- // Make sure to set up the default state so we don't crash\r
- if (readers == null) {\r
- setHints(null);\r
- }\r
- return decodeInternal(image);\r
- }catch(Exception e){\r
- throw new ReaderException(e.Message);\r
- } \r
- }\r
-\r
- /**\r
- * This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls\r
- * to decodeWithState(image) can reuse the same set of readers without reallocating memory. This\r
- * is important for performance in continuous scan clients.\r
- *\r
- * @param hints The set of hints to use for subsequent calls to decode(image)\r
- */\r
- public void setHints(Hashtable hints) {\r
- this.hints = hints;\r
-\r
- bool tryHarder = hints != null && hints.ContainsKey(DecodeHintType.TRY_HARDER);\r
-\r
- ArrayList possibleFormats = hints == null ? null : (ArrayList)hints[(DecodeHintType.POSSIBLE_FORMATS)];\r
- readers = new ArrayList();\r
- if (possibleFormats != null)\r
- {\r
- bool addOneDReader =\r
- possibleFormats.Contains(BarcodeFormat.UPC_A) ||\r
- possibleFormats.Contains(BarcodeFormat.UPC_E) ||\r
- possibleFormats.Contains(BarcodeFormat.EAN_13) ||\r
- possibleFormats.Contains(BarcodeFormat.EAN_8) ||\r
- possibleFormats.Contains(BarcodeFormat.CODE_39) ||\r
- possibleFormats.Contains(BarcodeFormat.CODE_128);\r
- // Put 1D readers upfront in "normal" mode\r
-\r
- if (addOneDReader && !tryHarder)\r
- {\r
- readers.Add(new MultiFormatOneDReader(hints));\r
- }\r
-\r
- if (possibleFormats.Contains(BarcodeFormat.QR_CODE))\r
- {\r
- readers.Add(new QRCodeReader());\r
- }\r
- // TODO re-enable once Data Matrix is ready\r
- if (possibleFormats.Contains(BarcodeFormat.DATAMATRIX)) {\r
- //readers.Add(new DataMatrixReader());\r
- }\r
- // At end in "try harder" mode\r
- if (addOneDReader && tryHarder)\r
- {\r
- readers.Add(new MultiFormatOneDReader(hints));\r
- }\r
- }\r
-\r
- if (readers.Count == 0)\r
- {\r
- if (!tryHarder)\r
- {\r
- //readers.Add(new MultiFormatOneDReader(hints));\r
- }\r
- readers.Add(new QRCodeReader());\r
- // TODO re-enable once Data Matrix is ready\r
- // readers.addElement(new DataMatrixReader());\r
- if (tryHarder)\r
- {\r
- //readers.Add(new MultiFormatOneDReader(hints));\r
- }\r
- }\r
- }\r
-\r
- private Result decodeInternal(MonochromeBitmapSource image) {\r
- try\r
- {\r
- int size = readers.Count;\r
- for (int i = 0; i < size; i++)\r
- {\r
- Reader reader = (Reader)readers[i];\r
- try\r
- {\r
- return reader.decode(image, hints);\r
- }\r
- catch (ReaderException re)\r
- {\r
- // continue\r
- }\r
- }\r
-\r
- throw new ReaderException("");\r
- }\r
- catch (Exception e) {\r
- throw new ReaderException(e.Message);\r
- }\r
- }\r
- \r
- \r
- }\r
+ \r
+ /// <summary> MultiFormatReader is a convenience class and the main entry point into the library for most uses.\r
+ /// By default it attempts to decode all barcode formats that the library supports. Optionally, you\r
+ /// can provide a hints object to request different behavior, for example only decoding QR codes.\r
+ /// \r
+ /// </summary>\r
+ /// <author> Sean Owen\r
+ /// </author>\r
+ /// <author> dswitkin@google.com (Daniel Switkin)\r
+ /// </author>\r
+ /// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source \r
+ /// </author>\r
+ public sealed class MultiFormatReader : Reader\r
+ {\r
+ /// <summary> This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls\r
+ /// to decodeWithState(image) can reuse the same set of readers without reallocating memory. This\r
+ /// is important for performance in continuous scan clients.\r
+ /// \r
+ /// </summary>\r
+ /// <param name="hints">The set of hints to use for subsequent calls to decode(image)\r
+ /// </param>\r
+ public System.Collections.Hashtable Hints\r
+ {\r
+ set\r
+ {\r
+ this.hints = value;\r
+ \r
+ bool tryHarder = value != null && value.ContainsKey(DecodeHintType.TRY_HARDER);\r
+ System.Collections.ArrayList formats = value == null?null:(System.Collections.ArrayList) value[DecodeHintType.POSSIBLE_FORMATS];\r
+ readers = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(10));\r
+ if (formats != null)\r
+ {\r
+ bool addOneDReader = formats.Contains(BarcodeFormat.UPC_A) || formats.Contains(BarcodeFormat.UPC_E) || formats.Contains(BarcodeFormat.EAN_13) || formats.Contains(BarcodeFormat.EAN_8) || formats.Contains(BarcodeFormat.CODE_39) || formats.Contains(BarcodeFormat.CODE_128) || formats.Contains(BarcodeFormat.ITF);\r
+ // Put 1D readers upfront in "normal" mode\r
+ if (addOneDReader && !tryHarder)\r
+ {\r
+ readers.Add(new MultiFormatOneDReader(value));\r
+ }\r
+ if (formats.Contains(BarcodeFormat.QR_CODE))\r
+ {\r
+ readers.Add(new QRCodeReader());\r
+ }\r
+ if (formats.Contains(BarcodeFormat.DATAMATRIX))\r
+ {\r
+ readers.Add(new DataMatrixReader());\r
+ }\r
+ if (formats.Contains(BarcodeFormat.PDF417))\r
+ {\r
+ readers.Add(new PDF417Reader());\r
+ }\r
+ // At end in "try harder" mode\r
+ if (addOneDReader && tryHarder)\r
+ {\r
+ readers.Add(new MultiFormatOneDReader(value));\r
+ }\r
+ }\r
+ if ((readers.Count == 0))\r
+ {\r
+ if (!tryHarder)\r
+ {\r
+ readers.Add(new MultiFormatOneDReader(value));\r
+ }\r
+ readers.Add(new QRCodeReader());\r
+ \r
+ // TODO re-enable once Data Matrix is ready\r
+ // readers.addElement(new DataMatrixReader());\r
+ \r
+ // TODO: Enable once PDF417 has passed QA\r
+ //readers.addElement(new PDF417Reader());\r
+ \r
+ if (tryHarder)\r
+ {\r
+ readers.Add(new MultiFormatOneDReader(value));\r
+ }\r
+ }\r
+ }\r
+ \r
+ }\r
+ \r
+ private System.Collections.Hashtable hints;\r
+ private System.Collections.ArrayList readers;\r
+ \r
+ /// <summary> This version of decode honors the intent of Reader.decode(BinaryBitmap) in that it\r
+ /// passes null as a hint to the decoders. However, that makes it inefficient to call repeatedly.\r
+ /// Use setHints() followed by decodeWithState() for continuous scan applications.\r
+ /// \r
+ /// </summary>\r
+ /// <param name="image">The pixel data to decode\r
+ /// </param>\r
+ /// <returns> The contents of the image\r
+ /// </returns>\r
+ /// <throws> ReaderException Any errors which occurred </throws>\r
+ public Result decode(BinaryBitmap image)\r
+ {\r
+ Hints = null;\r
+ return decodeInternal(image);\r
+ }\r
+ \r
+ /// <summary> Decode an image using the hints provided. Does not honor existing state.\r
+ /// \r
+ /// </summary>\r
+ /// <param name="image">The pixel data to decode\r
+ /// </param>\r
+ /// <param name="hints">The hints to use, clearing the previous state.\r
+ /// </param>\r
+ /// <returns> The contents of the image\r
+ /// </returns>\r
+ /// <throws> ReaderException Any errors which occurred </throws>\r
+ public Result decode(BinaryBitmap image, System.Collections.Hashtable hints)\r
+ {\r
+ Hints = hints;\r
+ return decodeInternal(image);\r
+ }\r
+ \r
+ /// <summary> Decode an image using the state set up by calling setHints() previously. Continuous scan\r
+ /// clients will get a <b>large</b> speed increase by using this instead of decode().\r
+ /// \r
+ /// </summary>\r
+ /// <param name="image">The pixel data to decode\r
+ /// </param>\r
+ /// <returns> The contents of the image\r
+ /// </returns>\r
+ /// <throws> ReaderException Any errors which occurred </throws>\r
+ public Result decodeWithState(BinaryBitmap image)\r
+ {\r
+ // Make sure to set up the default state so we don't crash\r
+ if (readers == null)\r
+ {\r
+ Hints = null;\r
+ }\r
+ return decodeInternal(image);\r
+ }\r
+ \r
+ private Result decodeInternal(BinaryBitmap image)\r
+ {\r
+ int size = readers.Count;\r
+ for (int i = 0; i < size; i++)\r
+ {\r
+ Reader reader = (Reader) readers[i];\r
+ try\r
+ {\r
+ return reader.decode(image, hints);\r
+ }\r
+ catch (ReaderException re)\r
+ {\r
+ // continue\r
+ }\r
+ }\r
+ \r
+ throw ReaderException.Instance;\r
+ }\r
+ }\r
}
\ No newline at end of file
projects / zxing.git / blobdiff