Unify handling of EC level between encoder and decoder

[zxing.git] / core / src / com / google / zxing / qrcode / QRCodeWriter.java

diff --git a/core/src/com/google/zxing/qrcode/QRCodeWriter.java b/core/src/com/google/zxing/qrcode/QRCodeWriter.java
index 24004e0..1920465 100644 (file)
--- a/core/src/com/google/zxing/qrcode/QRCodeWriter.java
+++ b/core/src/com/google/zxing/qrcode/QRCodeWriter.java
@@ -17,12 +17,14 @@
 package com.google.zxing.qrcode;
 
 import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
 import com.google.zxing.Writer;
 import com.google.zxing.WriterException;
-import com.google.zxing.common.ByteMatrix;
 import com.google.zxing.common.ByteArray;
+import com.google.zxing.common.ByteMatrix;
 import com.google.zxing.qrcode.encoder.Encoder;
 import com.google.zxing.qrcode.encoder.QRCode;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 
 import java.util.Hashtable;
 
@@ -35,16 +37,16 @@ public final class QRCodeWriter implements Writer {
 
   private static final int QUIET_ZONE_SIZE = 4;
 
-  public ByteMatrix encode(byte[] contents, BarcodeFormat format, int width, int height)
+  public ByteMatrix encode(String contents, BarcodeFormat format, int width, int height)
       throws WriterException {
 
     return encode(contents, format, width, height, null);
   }
 
-  public ByteMatrix encode(byte[] contents, BarcodeFormat format, int width, int height,
+  public ByteMatrix encode(String contents, BarcodeFormat format, int width, int height,
       Hashtable hints) throws WriterException {
 
-    if (contents == null || contents.length == 0) {
+    if (contents == null || contents.length() == 0) {
       throw new IllegalArgumentException("Found empty contents");
     }
 
@@ -57,20 +59,23 @@ public final class QRCodeWriter implements Writer {
           height);
     }
 
-    // TODO: Check hints for error correction level instead of hardcoding
-    int errorCorrectionLevel = QRCode.EC_LEVEL_L;
-    QRCode code = new QRCode();
-    if (Encoder.Encode(new ByteArray(contents), errorCorrectionLevel, code)) {
-      return renderResult(code, width, height);
-    } else {
-      throw new WriterException("Could not generate a QR Code");
+    ErrorCorrectionLevel errorCorrectionLevel = ErrorCorrectionLevel.L;
+    if (hints != null) {
+      ErrorCorrectionLevel requestedECLevel = (ErrorCorrectionLevel) hints.get(EncodeHintType.ERROR_CORRECTION);
+      if (requestedECLevel != null) {
+        errorCorrectionLevel = requestedECLevel;
+      }
     }
+
+    QRCode code = new QRCode();
+    Encoder.encode(new ByteArray(contents), errorCorrectionLevel, code);
+    return renderResult(code, width, height);
   }
 
   // Note that the input matrix uses 0 == white, 1 == black, while the output matrix uses
   // 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
   private ByteMatrix renderResult(QRCode code, final int width, final int height) {
-    ByteMatrix input = code.matrix();
+    ByteMatrix input = code.getMatrix();
     int inputWidth = input.width();
     int inputHeight = input.height();
     int qrWidth = inputWidth + (QUIET_ZONE_SIZE * 2);