/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
 * Copyright (c) 2010-2015, ITU/ISO/IEC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
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 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 */

/** \file     TEncAnalyze.h
    \brief    encoder analyzer class (header)
*/

#ifndef __TENCANALYZE__
#define __TENCANALYZE__

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <stdio.h>
#include <memory.h>
#include <assert.h>
#include "TLibCommon/CommonDef.h"
#include "TLibCommon/TComChromaFormat.h"
#include "math.h"

//! \ingroup TLibEncoder
//! \{

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

/// encoder analyzer class
class TEncAnalyze
{
private:
  Double    m_dPSNRSum[MAX_NUM_COMPONENT];
  Double    m_dAddBits;
  UInt      m_uiNumPic;
  Double    m_dFrmRate; //--CFG_KDY
  Double    m_MSEyuvframe[MAX_NUM_COMPONENT]; // sum of MSEs

public:
  virtual ~TEncAnalyze()  {}
  TEncAnalyze() { clear(); }

  Void  addResult( Double psnr[MAX_NUM_COMPONENT], Double bits, const Double MSEyuvframe[MAX_NUM_COMPONENT])
  {
    m_dAddBits  += bits;
    for(UInt i=0; i<MAX_NUM_COMPONENT; i++)
    {
      m_dPSNRSum[i] += psnr[i];
      m_MSEyuvframe[i] += MSEyuvframe[i];
    }

    m_uiNumPic++;
  }

  Double  getPsnr(ComponentID compID) const { return  m_dPSNRSum[compID];  }
  Double  getBits()                   const { return  m_dAddBits;   }
  Void    setBits(Double numBits)     { m_dAddBits=numBits; }
  UInt    getNumPic()                 const { return  m_uiNumPic;   }

  Void    setFrmRate  (Double dFrameRate) { m_dFrmRate = dFrameRate; } //--CFG_KDY
  Void    clear()
  {
    m_dAddBits = 0;
    for(UInt i=0; i<MAX_NUM_COMPONENT; i++)
    {
      m_dPSNRSum[i] = 0;
      m_MSEyuvframe[i] = 0;
    }
    m_uiNumPic = 0;
  }


  Void calculateCombinedValues(const ChromaFormat chFmt, Double &PSNRyuv, Double &MSEyuv, const BitDepths &bitDepths)
  {
    MSEyuv    = 0;
    Int scale = 0;

    Int maximumBitDepth = bitDepths.recon[CHANNEL_TYPE_LUMA];
    for (UInt channelTypeIndex = 1; channelTypeIndex < MAX_NUM_CHANNEL_TYPE; channelTypeIndex++)
    {
      if (bitDepths.recon[channelTypeIndex] > maximumBitDepth)
      {
        maximumBitDepth = bitDepths.recon[channelTypeIndex];
      }
    }

    const UInt maxval                = 255 << (maximumBitDepth - 8);
    const UInt numberValidComponents = getNumberValidComponents(chFmt);

    for (UInt comp=0; comp<numberValidComponents; comp++)
    {
      const ComponentID compID        = ComponentID(comp);
      const UInt        csx           = getComponentScaleX(compID, chFmt);
      const UInt        csy           = getComponentScaleY(compID, chFmt);
      const Int         scaleChan     = (4>>(csx+csy));
      const UInt        bitDepthShift = 2 * (maximumBitDepth - bitDepths.recon[toChannelType(compID)]); //*2 because this is a squared number

      const Double      channelMSE    = (m_MSEyuvframe[compID] * Double(1 << bitDepthShift)) / Double(getNumPic());

      scale  += scaleChan;
      MSEyuv += scaleChan * channelMSE;
    }

    MSEyuv /= Double(scale);  // i.e. divide by 6 for 4:2:0, 8 for 4:2:2 etc.
    PSNRyuv = (MSEyuv==0 ? 999.99 : 10*log10((maxval*maxval)/MSEyuv));
  }

#if SVC_EXTENSION
  Void    printOut ( TChar cDelim, const ChromaFormat chFmt, const Bool printMSEBasedSNR, const Bool printSequenceMSE, const BitDepths &bitDepths, UInt layerId = 0 )
#else
  Void    printOut ( TChar cDelim, const ChromaFormat chFmt, const Bool printMSEBasedSNR, const Bool printSequenceMSE, const BitDepths &bitDepths )
#endif
  {
    Double dFps     =   m_dFrmRate; //--CFG_KDY
    Double dScale   = dFps / 1000 / (Double)m_uiNumPic;

#if SVC_EXTENSION
    // SHM: to avoid compiler warning of possible usage of uninitialized variable
    Double MSEBasedSNR[MAX_NUM_COMPONENT] = {0, };
#else
    Double MSEBasedSNR[MAX_NUM_COMPONENT];
#endif
    if (printMSEBasedSNR)
    {
      for (UInt componentIndex = 0; componentIndex < MAX_NUM_COMPONENT; componentIndex++)
      {
        const ComponentID compID = ComponentID(componentIndex);

        if (getNumPic() == 0)
        {
          MSEBasedSNR[compID] = 0 * dScale; // this is the same calculation that will be evaluated for any other statistic when there are no frames (it should result in NaN). We use it here so all the output is consistent.
        }
        else
        {
          //NOTE: this is not the true maximum value for any bitDepth other than 8. It comes from the original HM PSNR calculation
          const UInt maxval = 255 << (bitDepths.recon[toChannelType(compID)] - 8);
          const Double MSE = m_MSEyuvframe[compID];

          MSEBasedSNR[compID] = (MSE == 0) ? 999.99 : (10 * log10((maxval * maxval) / (MSE / (Double)getNumPic())));
        }
      }
    }

    switch (chFmt)
    {
      case CHROMA_400:
        if (printMSEBasedSNR)
        {
#if SVC_EXTENSION
          if( layerId == 0 )
          {
#endif
          printf( "         \tTotal Frames |   "   "Bitrate     "  "Y-PSNR" );

          if (printSequenceMSE)
          {
            printf( "    Y-MSE\n" );
          }
          else
          {
            printf("\n");
          }

          //printf( "\t------------ "  " ----------"   " -------- "  " -------- "  " --------\n" );
#if SVC_EXTENSION
          }

          printf( "Average:  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf",
                 layerId,

#else
          printf( "Average: \t %8d    %c "          "%12.4lf  "    "%8.4lf",
#endif
                 getNumPic(), cDelim,
                 getBits() * dScale,
                 getPsnr(COMPONENT_Y) / (Double)getNumPic() );

          if (printSequenceMSE)
          {
            printf( "  %8.4lf\n", m_MSEyuvframe[COMPONENT_Y ] / (Double)getNumPic() );
          }
          else
          {
            printf("\n");
          }

#if SVC_EXTENSION
          printf( "From MSE:  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf\n",
                 layerId,
#else
          printf( "From MSE:\t %8d    %c "          "%12.4lf  "    "%8.4lf\n",
#endif
                 getNumPic(), cDelim,
                 getBits() * dScale,
                 MSEBasedSNR[COMPONENT_Y] );
        }
        else
        {
          printf( "\tTotal Frames |   "   "Bitrate     "  "Y-PSNR" );

          if (printSequenceMSE)
          {
            printf( "    Y-MSE\n" );
          }
          else
          {
            printf("\n");
          }

          //printf( "\t------------ "  " ----------"   " -------- "  " -------- "  " --------\n" );
#if SVC_EXTENSION
          printf( "  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf",
                 layerId,
#else
          printf( "\t %8d    %c "          "%12.4lf  "    "%8.4lf",
#endif
                 getNumPic(), cDelim,
                 getBits() * dScale,
                 getPsnr(COMPONENT_Y) / (Double)getNumPic() );

          if (printSequenceMSE)
          {
            printf( "  %8.4lf\n", m_MSEyuvframe[COMPONENT_Y ] / (Double)getNumPic() );
          }
          else
          {
            printf("\n");
          }
        }
        break;
      case CHROMA_420:
      case CHROMA_422:
      case CHROMA_444:
        {
          Double PSNRyuv = MAX_DOUBLE;
          Double MSEyuv  = MAX_DOUBLE;
          
          calculateCombinedValues(chFmt, PSNRyuv, MSEyuv, bitDepths);

          if (printMSEBasedSNR)
          {
#if SVC_EXTENSION
            if( layerId == 0 )
            {
#endif
            printf( "         \tTotal Frames |   "   "Bitrate     "  "Y-PSNR    "  "U-PSNR    "  "V-PSNR    "  "YUV-PSNR " );

            if (printSequenceMSE)
            {
              printf( " Y-MSE     "  "U-MSE     "  "V-MSE    "  "YUV-MSE \n" );
            }
            else
            {
              printf("\n");
            }

            //printf( "\t------------ "  " ----------"   " -------- "  " -------- "  " --------\n" );
#if SVC_EXTENSION
            }
            printf( "Average:  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
                   layerId,
#else
            printf( "Average: \t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
#endif
                   getNumPic(), cDelim,
                   getBits() * dScale,
                   getPsnr(COMPONENT_Y) / (Double)getNumPic(),
                   getPsnr(COMPONENT_Cb) / (Double)getNumPic(),
                   getPsnr(COMPONENT_Cr) / (Double)getNumPic(),
                   PSNRyuv );

            if (printSequenceMSE)
            {
              printf( "  %8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf\n",
                     m_MSEyuvframe[COMPONENT_Y ] / (Double)getNumPic(),
                     m_MSEyuvframe[COMPONENT_Cb] / (Double)getNumPic(),
                     m_MSEyuvframe[COMPONENT_Cr] / (Double)getNumPic(),
                     MSEyuv );
            }
            else
            {
              printf("\n");
            }

#if SVC_EXTENSION
            printf( "From MSE:  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf\n",
                   layerId,
#else
            printf( "From MSE:\t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf\n",
#endif
                   getNumPic(), cDelim,
                   getBits() * dScale,
                   MSEBasedSNR[COMPONENT_Y],
                   MSEBasedSNR[COMPONENT_Cb],
                   MSEBasedSNR[COMPONENT_Cr],
                   PSNRyuv );
          }
          else
          {
#if SVC_EXTENSION
            if( layerId == 0 )
            {
#endif
            printf( "\tTotal Frames |   "   "Bitrate     "  "Y-PSNR    "  "U-PSNR    "  "V-PSNR    "  "YUV-PSNR " );
            
            if (printSequenceMSE)
            {
              printf( " Y-MSE     "  "U-MSE     "  "V-MSE    "  "YUV-MSE \n" );
            }
            else
            {
              printf("\n");
            }

            //printf( "\t------------ "  " ----------"   " -------- "  " -------- "  " --------\n" );
#if SVC_EXTENSION
            }
            printf( "  L%d \t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
                   layerId,
#else
            printf( "\t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
#endif
                   getNumPic(), cDelim,
                   getBits() * dScale,
                   getPsnr(COMPONENT_Y) / (Double)getNumPic(),
                   getPsnr(COMPONENT_Cb) / (Double)getNumPic(),
                   getPsnr(COMPONENT_Cr) / (Double)getNumPic(),
                   PSNRyuv );

            if (printSequenceMSE)
            {
              printf( "  %8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf\n",
                     m_MSEyuvframe[COMPONENT_Y ] / (Double)getNumPic(),
                     m_MSEyuvframe[COMPONENT_Cb] / (Double)getNumPic(),
                     m_MSEyuvframe[COMPONENT_Cr] / (Double)getNumPic(),
                     MSEyuv );
            }
            else
            {
              printf("\n");
            }
          }
        }
        break;
      default:
        fprintf(stderr, "Unknown format during print out\n");
        exit(1);
        break;
    }
  }


  Void    printSummary(const ChromaFormat chFmt, const Bool printSequenceMSE, const BitDepths &bitDepths, const std::string &sFilename)
  {
    FILE* pFile = fopen (sFilename.c_str(), "at");

    Double dFps     =   m_dFrmRate; //--CFG_KDY
    Double dScale   = dFps / 1000 / (Double)m_uiNumPic;
    switch (chFmt)
    {
      case CHROMA_400:
        fprintf(pFile, "%f\t %f\n",
            getBits() * dScale,
            getPsnr(COMPONENT_Y) / (Double)getNumPic() );
        break;
      case CHROMA_420:
      case CHROMA_422:
      case CHROMA_444:
        {
          Double PSNRyuv = MAX_DOUBLE;
          Double MSEyuv  = MAX_DOUBLE;
          
          calculateCombinedValues(chFmt, PSNRyuv, MSEyuv, bitDepths);

          fprintf(pFile, "%f\t %f\t %f\t %f\t %f",
              getBits() * dScale,
              getPsnr(COMPONENT_Y) / (Double)getNumPic(),
              getPsnr(COMPONENT_Cb) / (Double)getNumPic(),
              getPsnr(COMPONENT_Cr) / (Double)getNumPic(),
              PSNRyuv );

          if (printSequenceMSE)
          {
            fprintf(pFile, "\t %f\t %f\t %f\t %f\n",
                m_MSEyuvframe[COMPONENT_Y ] / (Double)getNumPic(),
                m_MSEyuvframe[COMPONENT_Cb] / (Double)getNumPic(),
                m_MSEyuvframe[COMPONENT_Cr] / (Double)getNumPic(),
                MSEyuv );
          }
          else
          {
            fprintf(pFile, "\n");
          }

          break;
        }

      default:
          fprintf(stderr, "Unknown format during print out\n");
          exit(1);
          break;
    }

    fclose(pFile);
  }
};

extern TEncAnalyze             m_gcAnalyzeAll;
extern TEncAnalyze             m_gcAnalyzeI;
extern TEncAnalyze             m_gcAnalyzeP;
extern TEncAnalyze             m_gcAnalyzeB;

extern TEncAnalyze             m_gcAnalyzeAll_in;

//! \}

#endif // !defined(AFX_TENCANALYZE_H__C79BCAA2_6AC8_4175_A0FE_CF02F5829233__INCLUDED_)