/*
 * Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * 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.
 */

#ifndef otbMSTARImageIO_h
#define otbMSTARImageIO_h

#include "otbImageIOBase.h"

namespace otb
{

/** \class MSTARImageIO
 *
 * \brief ImageIO object for reading and writing MSTAR images
 *
 * The streaming read/write are implemented.
 *
 * \ingroup IOFilters
 *
 *
 * \ingroup OTBIOMSTAR
 */
class ITK_EXPORT MSTARImageIO : public otb::ImageIOBase
{
public:
  /** Standard class typedefs. */
  typedef MSTARImageIO            Self;
  typedef otb::ImageIOBase        Superclass;
  typedef itk::SmartPointer<Self> Pointer;

  /** Method for creation through the object factory. */
  itkNewMacro(Self);

  /** Run-time type information (and related methods). */
  itkTypeMacro(MSTARImageIO, Superclass);

  /*-------- This part of the interfaces deals with reading data. ----- */

  /** Determine the file type. Returns true if this ImageIO can read the
   * file specified. */
  bool CanReadFile(const char*) override;

  /** Determine the file type. Returns true if the ImageIO can stream read the specified file */
  bool CanStreamRead() override
  {
    return true;
  }

  /** Set the spacing and dimension information for the set filename. */
  void ReadImageInformation() override;

  /** Reads the data from disk into the memory buffer provided. */
  void Read(void* buffer) override;

  /*-------- This part of the interfaces deals with writing data. ----- */

  /** Determine the file type. Returns true if this ImageIO can write the
   * file specified. */
  bool CanWriteFile(const char*) override;

  /** Determine the file type. Returns true if the ImageIO can stream write the specified file */
  bool CanStreamWrite() override
  {
    return true;
  }

  /** Set the spacing and dimension information for the set filename. */
  void WriteImageInformation() override;

  /** Writes the data to disk from the memory buffer provided. Make sure
   * that the IORegions has been set properly. */
  void Write(const void* buffer) override;

  MSTARImageIO();
  ~MSTARImageIO() override;
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;


  /** Get the number of overviews available into the file specified
   *  This imageIO didn't support overviews */
  unsigned int GetOverviewsCount() override
  {
    // MANTIS-1154: Source image is always considered as the best
    // resolution overview.
    return 1;
  }

  /** Get information about overviews available into the file specified
   * This imageIO didn't support overviews */
  std::vector<std::string> GetOverviewsInfo() override
  {
    std::vector<std::string> desc;
    return desc;
  }

  /** Provide hist about the output container to deal with complex pixel
   *  type (Not used here) */
  void SetOutputImagePixelType(bool itkNotUsed(isComplexInternalPixelType), bool itkNotUsed(isVectorImage)) override
  {
  }

private:
  MSTARImageIO(const Self&) = delete;
  void operator=(const Self&) = delete;

  /** Methode permettant de recuperer le format et le nom de l'image a partir du
  nom d'un fichier image. */
  float byteswap_SR_IR(unsigned char* pointer);
  unsigned short byteswap_SUS_IUS(unsigned char* pointer);
  int CheckByteOrder(void);

  FILE* MSTARfp; /* Input FILE ptr to MSTAR image file     */
  FILE* RAWfp;   /* Output FILE ptr to MSTAR RAW data file */
  FILE* HDRfp;   /* Output FILE ptr to MSTAR header file   */

  int i, j, rv, n, numrows, numcols, numgot;

  const char* MSTARname;   /* Input MSTAR filename           */
  char        RAWname[80]; /* Output MSTAR RAW filename      */

  int  outOpt; /* ALL data, or MAG ONLY...    */
  int  phlen, nhlen, mstartype;
  long magloc, bytesPerImage, nchunks, totchunks;

  char* tptr; /* Temp buffer ptr */
  char* phdr; /* Ptr to buffer to hold Phoenix header */
  char  tbuff[1024];

  unsigned short* FSCENEdata; /* Ptr to Fullscene data buffer */
  float*          CHIPdata;   /* Ptr to CHIp data buffer      */

  /* Byte Order Variables */
  int            byteorder;
  unsigned char  bigfloatbuf[4];  /* BigEndian float buffer... */
  float          littlefloatval;  /* LittleEndian float value  */
  unsigned char  bigushortbuf[2]; /* BigEndian ushort buffer...*/
  unsigned short littleushortval; /* LittleEndian ushort value.*/

  int m_BytePerPixel;
};

} // end namespace otb

#endif // otbMSTARImageIO_h
