/* 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.
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 * Copyright (c) 2010-2015, ITU/ISO/IEC
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
 *
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 *    be used to endorse or promote products derived from this software without
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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));
  }


  Void    printOut ( Char cDelim, const ChromaFormat chFmt, const Bool printMSEBasedSNR, const Bool printSequenceMSE, const BitDepths &bitDepths )
  {
    Double dFps     =   m_dFrmRate; //--CFG_KDY
    Double dScale   = dFps / 1000 / (Double)m_uiNumPic;

    Double MSEBasedSNR[MAX_NUM_COMPONENT];
    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)
        {
          printf( "         \tTotal Frames |   "   "Bitrate     "  "Y-PSNR" );

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

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

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

          printf( "From MSE:\t %8d    %c "          "%12.4lf  "    "%8.4lf\n",
                 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" );
          printf( "\t %8d    %c "          "%12.4lf  "    "%8.4lf",
                 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)
          {
            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" );
            printf( "Average: \t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
                   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");
            }

            printf( "From MSE:\t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf\n",
                   getNumPic(), cDelim,
                   getBits() * dScale,
                   MSEBasedSNR[COMPONENT_Y],
                   MSEBasedSNR[COMPONENT_Cb],
                   MSEBasedSNR[COMPONENT_Cr],
                   PSNRyuv );
          }
          else
          {
            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" );
            printf( "\t %8d    %c "          "%12.4lf  "    "%8.4lf  "   "%8.4lf  "    "%8.4lf  "   "%8.4lf",
                   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_)