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/** \file     VideoIOYuv.h
    \brief    YUV file I/O class (header)
*/

#ifndef __VIDEOIOYUV__
#define __VIDEOIOYUV__

#include <stdio.h>
#include <fstream>
#include <iostream>
#include "CommonLib/CommonDef.h"
#include "CommonLib/Unit.h"

using namespace std;

// ====================================================================================================================
// Class definition
// ====================================================================================================================

#include "CommonLib/Slice.h"
#include "CommonLib/Picture.h"

/// YUV file I/O class
class VideoIOYuv
{
private:
  fstream   m_cHandle;                                      ///< file handle
  int       m_fileBitdepth[MAX_NUM_CHANNEL_TYPE]; ///< bitdepth of input/output video file
  int       m_MSBExtendedBitDepth[MAX_NUM_CHANNEL_TYPE];  ///< bitdepth after addition of MSBs (with value 0)
  int       m_bitdepthShift[MAX_NUM_CHANNEL_TYPE];  ///< number of bits to increase or decrease image by before/after write/read

public:
  VideoIOYuv()           {}
  virtual ~VideoIOYuv()  {}

  void  open  ( const std::string &fileName, bool bWriteMode, const int fileBitDepth[MAX_NUM_CHANNEL_TYPE], const int MSBExtendedBitDepth[MAX_NUM_CHANNEL_TYPE], const int internalBitDepth[MAX_NUM_CHANNEL_TYPE] ); ///< open or create file
  void  close ();                                           ///< close file
#if EXTENSION_360_VIDEO
  void skipFrames(int numFrames, uint32_t width, uint32_t height, ChromaFormat format);
#else
  void skipFrames(uint32_t numFrames, uint32_t width, uint32_t height, ChromaFormat format);
#endif
  // if fileFormat<NUM_CHROMA_FORMAT, the format of the file is that format specified, else it is the format of the PicYuv.


  // If fileFormat=NUM_CHROMA_FORMAT, use the format defined by pPicYuvTrueOrg
  bool  read ( PelUnitBuf& pic, PelUnitBuf& picOrg, const InputColourSpaceConversion ipcsc, int aiPad[2], ChromaFormat fileFormat=NUM_CHROMA_FORMAT, const bool bClipToRec709=false );     ///< read one frame with padding parameter

  // If fileFormat=NUM_CHROMA_FORMAT, use the format defined by pPicYuv
  bool  write( uint32_t orgWidth, uint32_t orgHeight, const CPelUnitBuf& pic,
               const InputColourSpaceConversion ipCSC,
               const bool bPackedYUVOutputMode,
               int confLeft = 0, int confRight = 0, int confTop = 0, int confBottom = 0, ChromaFormat format = NUM_CHROMA_FORMAT, const bool bClipToRec709 = false, const bool subtractConfWindowOffsets = true ); ///< write one YUV frame with padding parameter

  // If fileFormat=NUM_CHROMA_FORMAT, use the format defined by pPicYuvTop and pPicYuvBottom
  bool  write( const CPelUnitBuf& picTop, const CPelUnitBuf& picBot,
               const InputColourSpaceConversion ipCSC,
               const bool bPackedYUVOutputMode,
               int confLeft = 0, int confRight = 0, int confTop = 0, int confBottom = 0, ChromaFormat format = NUM_CHROMA_FORMAT, const bool isTff = false, const bool bClipToRec709 = false );

  static void ColourSpaceConvert(const CPelUnitBuf &src, PelUnitBuf &dest, const InputColourSpaceConversion conversion, bool bIsForwards);

  bool  isEof ();                                           ///< check for end-of-file
  bool  isFail();                                           ///< check for failure
  bool  isOpen() { return m_cHandle.is_open(); }
  void  setBitdepthShift( int ch, int bd )  { m_bitdepthShift[ch] = bd;   }
  int   getBitdepthShift( int ch )          { return m_bitdepthShift[ch]; }
  int   getFileBitdepth( int ch )           { return m_fileBitdepth[ch];  }

  bool  writeUpscaledPicture( const SPS& sps, const PPS& pps, const CPelUnitBuf& pic,
    const InputColourSpaceConversion ipCSC, const bool bPackedYUVOutputMode, int outputChoice = 0, ChromaFormat format = NUM_CHROMA_FORMAT, const bool bClipToRec709 = false ); ///< write one upsaled YUV frame

};

#endif // __VIDEOIOYUV__