Ported functions

@ qrcode/decoder/QRBitMatrixParser.cpp
 - remask
 - setMirror
 - mirror

src/zxing/zxing/qrcode/decoder/BitMatrixParser.h

@@ -35,6 +35,7 @@ private:
   Ref<BitMatrix> bitMatrix_;
   Version *parsedVersion_;
   Ref<FormatInformation> parsedFormatInfo_;
+  bool mirror_;
 
   int copyBit(size_t x, size_t y, int versionBits);
 
@@ -43,6 +44,9 @@ public:
   Ref<FormatInformation> readFormatInformation();
   Version *readVersion();
   ArrayRef<char> readCodewords();
+  void remask();
+  void setMirror(boolean mirror);
+  void mirror();
 
 private:
   BitMatrixParser(const BitMatrixParser&);

src/zxing/zxing/qrcode/decoder/QRBitMatrixParser.cpp

@@ -179,5 +179,32 @@ ArrayRef<char> BitMatrixParser::readCodewords() {
   return result;
 }
 
+void BitMatrixParser::remask() {
+    if (parsedFormatInfo_ == 0) {
+        return; // We have no format information, and have no data mask
+    }
+
+    DataMask &dataMask = DataMask::forReference((int)parsedFormatInfo_->getDataMask());
+    int dimension = bitMatrix_->getHeight();
+    dataMask.unmaskBitMatrix(*bitMatrix_, dimension);
+}
+
+void BitMatrixParser::setMirror(boolean mirror) {
+    parsedVersion_ = 0;
+    parsedFormatInfo_ = 0;
+    mirror_ = mirror;
+}
+
+void BitMatrixParser::mirror() {
+    for (int x = 0; x < bitMatrix_->getWidth(); x++) {
+        for (int y = x + 1; y < bitMatrix_->getHeight(); y++) {
+            if (bitMatrix_->get(x, y) != bitMatrix_->get(y, x)) {
+                bitMatrix_->flip(y, x);
+                bitMatrix_->flip(x, y);
+            }
+        }
+    }
+}
+
 }
 }

src/zxing/zxing/qrcode/decoder/QRDecoder.cpp

@@ -29,7 +29,6 @@
 #include <zxing/ChecksumException.h>
 #include <zxing/common/reedsolomon/ReedSolomonException.h>
 
-using zxing::qrcode::Decoder;
 using zxing::DecoderResult;
 using zxing::Ref;
 
@@ -37,6 +36,9 @@ using zxing::Ref;
 using zxing::ArrayRef;
 using zxing::BitMatrix;
 
+namespace zxing {
+namespace qrcode {
+
 Decoder::Decoder() :
   rsDecoder_(GenericGF::QR_CODE_FIELD_256) {
 }
@@ -105,3 +107,5 @@ Ref<DecoderResult> Decoder::decode(Ref<BitMatrix> bits) {
                                         DecodedBitStreamParser::Hashtable());
 }
 
+}
+}