LuminanceSource.h Example File

 // -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
 #ifndef __LUMINANCESOURCE_H__
 #define __LUMINANCESOURCE_H__
 /*
  *  LuminanceSource.h
  *  zxing
  *
  *  Copyright 2010 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/common/Counted.h>
 #include <zxing/common/Array.h>
 #include <string.h>
 #include "common/Types.h"

 namespace zxing {

 class LuminanceSource : public Counted {
  private:
   const int width;
   const int height;

  public:
   LuminanceSource(int width, int height);
   virtual ~LuminanceSource();

   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<byte> getRow(int y, ArrayRef<byte> row) const = 0;
   virtual ArrayRef<byte> getMatrix() const = 0;

   virtual bool isCropSupported() const;
   virtual Ref<LuminanceSource> crop(int left, int top, int width, int height) const;

   virtual bool isRotateSupported() const;

   virtual Ref<LuminanceSource> invert() const;

   virtual Ref<LuminanceSource> rotateCounterClockwise() const;

   virtual Ref<LuminanceSource> rotateCounterClockwise45() const;

   operator std::string () const;
 };

 }

 #endif /* LUMINANCESOURCE_H_ */