C++ updates for r2574 and other java reconciliation

git-svn-id: https://zxing.googlecode.com/svn/trunk@2622 59b500cc-1b3d-0410-9834-0bbf25fbcc57

cpp/core/src/zxing/InvertedLuminanceSource.cpp

@@ -0,0 +1,44 @@
+// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
+/*
+ *  Copyright 2013 ZXing authors All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <zxing/ZXing.h>
+#include <zxing/InvertedLuminanceSource.h>
+
+using zxing::ArrayRef;
+using zxing::InvertedLuminanceSource;
+
+InvertedLuminanceSource::InvertedLuminanceSource(Ref<LuminanceSource> const& delegate_)
+    : Super(delegate_->getWidth(), delegate_->getHeight()), delegate(delegate_) {}  
+
+ArrayRef<char> InvertedLuminanceSource::getRow(int y, ArrayRef<char> row) const {
+  row = delegate->getRow(y, row);
+  int width = getWidth();
+  for (int i = 0; i < width; i++) {
+    row[i] = (byte) (255 - (row[i] & 0xFF));
+  }
+  return row;
+}
+
+ArrayRef<char> InvertedLuminanceSource::getMatrix() const {
+  ArrayRef<char> matrix = delegate->getMatrix();
+  int length = getWidth() * getHeight();
+  ArrayRef<char> invertedMatrix(length);
+  for (int i = 0; i < length; i++) {
+    invertedMatrix[i] = (byte) (255 - (matrix[i] & 0xFF));
+  }
+  return invertedMatrix;
+}

cpp/core/src/zxing/InvertedLuminanceSource.h

@@ -0,0 +1,38 @@
+// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
+#ifndef __INVERTEDLUMINANCESOURCE_H__
+#define __INVERTEDLUMINANCESOURCE_H__
+/*
+ *  Copyright 2013 ZXing authors All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <zxing/LuminanceSource.h>
+
+namespace zxing {
+
+class InvertedLuminanceSource : public LuminanceSource {
+private:
+  typedef LuminanceSource Super;
+  const Ref<LuminanceSource> delegate;
+
+public:
+  InvertedLuminanceSource(Ref<LuminanceSource> const&);
+
+  ArrayRef<char> getRow(int y, ArrayRef<char> row) const;
+  ArrayRef<char> getMatrix() const;
+};
+
+}
+
+#endif /* INVERTEDLUMINANCESOURCE_H_ */

cpp/core/src/zxing/LuminanceSource.cpp

@@ -20,16 +20,15 @@
 
 #include <sstream>
 #include <zxing/LuminanceSource.h>
+#include <zxing/InvertedLuminanceSource.h>
 #include <zxing/common/IllegalArgumentException.h>
 
 using zxing::Ref;
 using zxing::LuminanceSource;
 
-LuminanceSource::LuminanceSource() {
-}
+LuminanceSource::LuminanceSource(int width_, int height_) :width(width_), height(height_) {}
 
-LuminanceSource::~LuminanceSource() {
-}
+LuminanceSource::~LuminanceSource() {}
 
 bool LuminanceSource::isCropSupported() const {
   return false;
@@ -51,7 +50,7 @@ Ref<LuminanceSource> LuminanceSource::rotateCounterClockwise() {
   throw IllegalArgumentException("This luminance source does not support rotation.");
 }
 
-LuminanceSource::operator std::string() {
+LuminanceSource::operator std::string() const {
   ArrayRef<char> row;
   std::ostringstream oss;
   for (int y = 0; y < getHeight(); y++) {
@@ -74,3 +73,7 @@ LuminanceSource::operator std::string() {
   }
   return oss.str();
 }
+
+Ref<LuminanceSource> LuminanceSource::invert(Ref<LuminanceSource> const& that) {
+  return Ref<LuminanceSource>(new InvertedLuminanceSource(that));
+}

cpp/core/src/zxing/LuminanceSource.h

@@ -25,29 +25,35 @@
 #include <string.h>
 
 namespace zxing {
-  class LuminanceSource;
-}
 
-class zxing::LuminanceSource : public Counted {
-public:
-  LuminanceSource();
+class LuminanceSource : public Counted {
+ private:
+  const int width;
+  const int height;
+
+ public:
+  LuminanceSource(int width, int height);
   virtual ~LuminanceSource();
 
-  virtual int getWidth() const = 0;
-  virtual int getHeight() const = 0;
+  int getWidth() const { return width; }
+  int getHeight() const { return height; }
 
   // Callers take ownership of the returned memory and must call delete [] on it themselves.
-  virtual ArrayRef<char> getRow(int y, ArrayRef<char> row) = 0;
-  virtual ArrayRef<char> getMatrix() = 0;
+  virtual ArrayRef<char> getRow(int y, ArrayRef<char> row) const = 0;
+  virtual ArrayRef<char> getMatrix() const = 0;
 
   virtual bool isCropSupported() const;
   virtual Ref<LuminanceSource> crop(int left, int top, int width, int height);
 
   virtual bool isRotateSupported() const;
+
+  static Ref<LuminanceSource> invert(Ref<LuminanceSource> const&);
+
   virtual Ref<LuminanceSource> rotateCounterClockwise();
 
-  operator std::string (); // should be const but don't want to make sure a
-  // large breaking change right now
+  operator std::string () const;
 };
 
+}
+
 #endif /* LUMINANCESOURCE_H_ */

cpp/core/src/zxing/ZXing.h

@@ -23,6 +23,12 @@
 #define ZXING_DEBUG 0
 #endif
 
+namespace zxing {
+
+typedef char byte;
+
+}
+
 #if ZXING_DEBUG
 
 #include <iostream>
@@ -40,10 +46,8 @@ using std::ostream;
 #include <sys/time.h>
 
 namespace zxing {
-  class DebugTimer;
-}
 
-class zxing::DebugTimer {
+class DebugTimer {
 public:
   DebugTimer(char const* string_) : chars(string_) {
     gettimeofday(&start, 0);
@@ -80,6 +84,8 @@ private:
   struct timeval start;
 };
 
+}
+
 #define ZXING_TIME(string) DebugTimer __timer__ (string)
 #define ZXING_TIME_MARK(string) __timer__.mark(string)
 

cpp/core/src/zxing/common/Array.h

@@ -60,7 +60,7 @@ public:
     values_ = array;
     return *this;
   }
-  T operator[](int i) const {
+  T const& operator[](int i) const {
     return values_[i];
   }
   T& operator[](int i) {
@@ -117,7 +117,7 @@ public:
     array_ = 0;
   }
 
-  T operator[](int i) const {
+  T const& operator[](int i) const {
     return (*array_)[i];
   }
   T& operator[](int i) {

cpp/core/src/zxing/common/GreyscaleLuminanceSource.cpp

@@ -32,17 +32,17 @@ GreyscaleLuminanceSource(ArrayRef<char> greyData,
                          int dataWidth, int dataHeight,
                          int left, int top,
                          int width, int height) 
-  : greyData_(greyData),
-    dataWidth_(dataWidth), dataHeight_(dataHeight),
-    left_(left), top_(top),
-    width_(width), height_(height) {
-    
+    : Super(width, height),
+      greyData_(greyData),
+      dataWidth_(dataWidth), dataHeight_(dataHeight),
+      left_(left), top_(top) {
+
   if (left + width > dataWidth || top + height > dataHeight || top < 0 || left < 0) {
     throw IllegalArgumentException("Crop rectangle does not fit within image data.");
   }
 }
 
-ArrayRef<char> GreyscaleLuminanceSource::getRow(int y, ArrayRef<char> row) {
+ArrayRef<char> GreyscaleLuminanceSource::getRow(int y, ArrayRef<char> row) const {
   if (y < 0 || y >= this->getHeight()) {
     throw IllegalArgumentException("Requested row is outside the image.");
   }
@@ -56,14 +56,14 @@ ArrayRef<char> GreyscaleLuminanceSource::getRow(int y, ArrayRef<char> row) {
   return row;
 }
 
-ArrayRef<char> GreyscaleLuminanceSource::getMatrix() {
-  int size = width_ * height_;
+ArrayRef<char> GreyscaleLuminanceSource::getMatrix() const {
+  int size = getWidth() * getHeight();
   ArrayRef<char> result (size);
-  if (left_ == 0 && top_ == 0 && dataWidth_ == width_ && dataHeight_ == height_) {
+  if (left_ == 0 && top_ == 0 && dataWidth_ == getWidth() && dataHeight_ == getHeight()) {
     memcpy(&result[0], &greyData_[0], size);
   } else {
-    for (int row = 0; row < height_; row++) {
-      memcpy(&result[row * width_], &greyData_[(top_ + row) * dataWidth_ + left_], width_);
+    for (int row = 0; row < getHeight(); row++) {
+      memcpy(&result[row * getWidth()], &greyData_[(top_ + row) * dataWidth_ + left_], getWidth());
     }
   }
   return result;
@@ -77,35 +77,7 @@ Ref<LuminanceSource> GreyscaleLuminanceSource::rotateCounterClockwise() {
   Ref<LuminanceSource> result ( 
     new GreyscaleRotatedLuminanceSource(greyData_,
                                         dataWidth_, dataHeight_,
-                                        top_, left_, height_, width_)
+                                        top_, left_, getHeight(), getWidth())
     );
-
-  /*
-  // testing code ... remove when we trust everything.
-  // NB: very slow, so don't forget and leave on.
-  for(int r = top_; r < top_+height_; ++r) {
-    for(int c = left_; c < left_+width_; ++c) {
-      int rot_r = r;
-      int rot_c = c;
-      // transpose
-      int tmp = rot_r;
-      rot_r = rot_c;
-      rot_c = tmp;
-      // flip vert
-      rot_r = width_-rot_r-1;
-      if (getRow(r, ArrayRef<char>())[c] !=
-          result->getRow(rot_r, ArrayRef<char>())[rot_c]) {
-        using namespace std;
-        cerr << r << "," << c << " "
-             << rot_r << "," << rot_c << " "
-             << (0+getRow(r, ArrayRef<char>())[c]) << " " 
-             << (0+result->getRow(rot_r, ArrayRef<char>())[rot_c]) << " " 
-             << endl;
-        abort();
-      }
-    }
-  }
-  */
-  
   return result;
 }

cpp/core/src/zxing/common/GreyscaleLuminanceSource.h

@@ -23,41 +23,32 @@
 #include <zxing/LuminanceSource.h>
 
 namespace zxing {
-  class GreyscaleLuminanceSource;
-}
 
-class zxing::GreyscaleLuminanceSource : public LuminanceSource {
+class GreyscaleLuminanceSource : public LuminanceSource {
 
 private:
+  typedef LuminanceSource Super;
   ArrayRef<char> greyData_;
-  int dataWidth_;
-  int dataHeight_;
-  int left_;
-  int top_;
-  int width_;
-  int height_;
+  const int dataWidth_;
+  const int dataHeight_;
+  const int left_;
+  const int top_;
 
 public:
   GreyscaleLuminanceSource(ArrayRef<char> greyData, int dataWidth, int dataHeight, int left,
                            int top, int width, int height);
 
-  ArrayRef<char> getRow(int y, ArrayRef<char> row);
-  ArrayRef<char> getMatrix();
+  ArrayRef<char> getRow(int y, ArrayRef<char> row) const;
+  ArrayRef<char> getMatrix() const;
 
   bool isRotateSupported() const {
     return true;
   }
 
-  int getWidth() const {
-    return width_;
-  }
-
-  int getHeight() const {
-    return height_;
-  }
-
   Ref<LuminanceSource> rotateCounterClockwise();
 
 };
 
+}
+
 #endif

cpp/core/src/zxing/common/GreyscaleRotatedLuminanceSource.cpp

@@ -32,11 +32,11 @@ GreyscaleRotatedLuminanceSource::
 GreyscaleRotatedLuminanceSource(ArrayRef<char> greyData,
                                 int dataWidth, int dataHeight,
                                 int left, int top,
-                                int width, int height) 
-  : greyData_(greyData),
-    dataWidth_(dataWidth),
-    left_(left), top_(top), width_(width),
-    height_(height) {
+                                int width, int height)
+    : Super(width, height),
+      greyData_(greyData),
+      dataWidth_(dataWidth),
+      left_(left), top_(top) {
   // Intentionally comparing to the opposite dimension since we're rotated.
   if (left + width > dataHeight || top + height > dataWidth) {
     throw IllegalArgumentException("Crop rectangle does not fit within image data.");
@@ -45,34 +45,34 @@ GreyscaleRotatedLuminanceSource(ArrayRef<char> greyData,
 
 // The API asks for rows, but we're rotated, so we return columns.
 ArrayRef<char>
-GreyscaleRotatedLuminanceSource::getRow(int y, ArrayRef<char> row) {
+GreyscaleRotatedLuminanceSource::getRow(int y, ArrayRef<char> row) const {
   if (y < 0 || y >= getHeight()) {
     throw IllegalArgumentException("Requested row is outside the image.");
   }
-  if (!row || row.size() < width_) {
-    row = ArrayRef<char>(width_);
+  if (!row || row.size() < getWidth()) {
+    row = ArrayRef<char>(getWidth());
   }
   int offset = (left_ * dataWidth_) + (dataWidth_ - 1 - (y + top_));
   using namespace std;
   if (false) {
     cerr << offset << " = "
          << top_ << " " << left_ << " "
-         << height_ << " " << width_ << " "
+         << getHeight() << " " << getWidth() << " "
          << y << endl;
   }
-  for (int x = 0; x < width_; x++) {
+  for (int x = 0; x < getWidth(); x++) {
     row[x] = greyData_[offset];
     offset += dataWidth_;
   }
   return row;
 }
 
-ArrayRef<char> GreyscaleRotatedLuminanceSource::getMatrix() {
-  ArrayRef<char> result (width_ * height_);
-  for (int y = 0; y < height_; y++) {
-    char* row = &result[y * width_];
+ArrayRef<char> GreyscaleRotatedLuminanceSource::getMatrix() const {
+  ArrayRef<char> result (getWidth() * getHeight());
+  for (int y = 0; y < getHeight(); y++) {
+    char* row = &result[y * getWidth()];
     int offset = (left_ * dataWidth_) + (dataWidth_ - 1 - (y + top_));
-    for (int x = 0; x < width_; x++) {
+    for (int x = 0; x < getWidth(); x++) {
       row[x] = greyData_[offset];
       offset += dataWidth_;
     }

cpp/core/src/zxing/common/GreyscaleRotatedLuminanceSource.h

@@ -24,37 +24,27 @@
 #include <zxing/LuminanceSource.h>
 
 namespace zxing {
-    class GreyscaleRotatedLuminanceSource;
-}
 
-class zxing::GreyscaleRotatedLuminanceSource : public LuminanceSource {
+class GreyscaleRotatedLuminanceSource : public LuminanceSource {
  private:
+  typedef LuminanceSource Super;
   ArrayRef<char> greyData_;
   const int dataWidth_;
   const int left_;
   const int top_;
-  const int width_;
-  const int height_;
 
 public:
   GreyscaleRotatedLuminanceSource(ArrayRef<char> greyData, int dataWidth, int dataHeight,
       int left, int top, int width, int height);
 
-  ArrayRef<char> getRow(int y, ArrayRef<char> row);
-  ArrayRef<char> getMatrix();
+  ArrayRef<char> getRow(int y, ArrayRef<char> row) const;
+  ArrayRef<char> getMatrix() const;
 
   bool isRotateSupported() const {
     return false;
   }
-
-  int getWidth() const {
-    return width_;
-  }
-
-  int getHeight() const {
-    return height_;
-  }
-
 };
 
+}
+
 #endif

cpp/magick/src/MagickBitmapSource.cpp

@@ -26,27 +26,18 @@ using zxing::Ref;
 using zxing::LuminanceSource;
 using zxing::MagickBitmapSource;
 
-MagickBitmapSource::MagickBitmapSource(Image& image) : image_(image) {
-  width = image.columns();
-  height = image.rows();
-}
+MagickBitmapSource::MagickBitmapSource(Image& image)
+    : Super(image.columns(), image.rows()), image_(image) {}
 
 MagickBitmapSource::~MagickBitmapSource() {
 }
 
-int MagickBitmapSource::getWidth() const {
-  return width;
-}
+ArrayRef<char> MagickBitmapSource::getRow(int y, ArrayRef<char> row) const {
+  const int width = getWidth();
 
-int MagickBitmapSource::getHeight() const {
-  return height;
-}
-
-ArrayRef<char> MagickBitmapSource::getRow(int y, ArrayRef<char> row) {
   const Magick::PixelPacket* pixel_cache =
-    image_.getConstPixels(0, y, width, 1);
+      image_.getConstPixels(0, y, width, 1);
 
-  int width = getWidth();
   if (!row || row->size() < width) {
     row =ArrayRef<char>(width);
   }
@@ -62,10 +53,10 @@ ArrayRef<char> MagickBitmapSource::getRow(int y, ArrayRef<char> row) {
 }
 
 /** This is a more efficient implementation. */
-ArrayRef<char> MagickBitmapSource::getMatrix() {
+ArrayRef<char> MagickBitmapSource::getMatrix() const {
+  const int width = getWidth();
+  const int height =  getHeight();
   const Magick::PixelPacket* pixel_cache = image_.getConstPixels(0, 0, width, height);
-  int width = getWidth();
-  int height =  getHeight();
   ArrayRef<char> matrix = ArrayRef<char>(width*height);
   char* m = &matrix[0];
   const Magick::PixelPacket* p = pixel_cache;

cpp/magick/src/MagickBitmapSource.h

@@ -21,28 +21,26 @@
 #include <zxing/LuminanceSource.h>
 
 namespace zxing {
-  class MagickBitmapSource;
-}
 
-class zxing::MagickBitmapSource : public LuminanceSource {
+class MagickBitmapSource : public LuminanceSource {
 private:
+  typedef LuminanceSource Super;
   Magick::Image image_;
-  int width;
-  int height;
 
 public:
   MagickBitmapSource(Magick::Image& image);
 
   ~MagickBitmapSource();
 
-  int getWidth() const;
-  int getHeight() const;
-  ArrayRef<char> getRow(int y, ArrayRef<char> row);
-  ArrayRef<char> getMatrix();
+  ArrayRef<char> getRow(int y, ArrayRef<char> row) const;
+  ArrayRef<char> getMatrix() const;
+
   bool isCropSupported() const;
   Ref<LuminanceSource> crop(int left, int top, int width, int height);
   bool isRotateSupported() const;
   Ref<LuminanceSource> rotateCounterClockwise();
 };
 
+}
+
 #endif /* MAGICKMONOCHROMEBITMAPSOURCE_H_ */