#include <gtest/gtest.h>
#include <math.h>
#include <string.h>
#include "cpu.h"
#include "cpu_core.h"
#include "IWelsVP.h"
#include "ScrollDetection.h"
#include "ScrollDetectionFuncs.h"
#include "utils/DataGenerator.h"

using namespace nsWelsVP;

#define ASSERT_MEMORY_FAIL2X(A, B)     \
  if (NULL == B) {                     \
  delete []A;\
  ASSERT_TRUE(0);                    \
  }

TEST(ScrollDetectionTest,TestScroll)
{
  unsigned char* pSrc, *pRef;
  int iWidthSets[4] = {640,1024,1280,1980};
  int iHeightSets[4] = {360,768,720,1080};
  int iStride = 0;
  int iIdx = 0;

  for(int i=0; i<4; i++){
    int iWidth = iWidthSets[i];
    int iHeight = iHeightSets[i];
    iStride = iWidth + 16;
    pSrc = new unsigned char[iHeight*iStride];
    ASSERT_TRUE(NULL != pSrc);
    pRef = new unsigned char[iHeight*iStride];
    ASSERT_MEMORY_FAIL2X(pSrc, pRef)
    RandomPixelDataGenerator(pRef, iWidth, iHeight, iStride, iIdx );

    int iMvRange = iHeight/3;
    int iScrollMv = rand()%(iMvRange<<1) - iMvRange;
    unsigned char* pSrcTmp = pSrc;
    unsigned char* pRefTmp = pRef;

    for (int j=0;j<iHeight;j++) {
      if ((j+iScrollMv)>=0 && (j+iScrollMv)<iHeight)
        for (int i=0;i<iWidth;i++) {
            memcpy(pSrcTmp , &pRefTmp[(j+iScrollMv)*iStride], iWidth*sizeof(unsigned char));
      } else {
        for (int i=0;i<iWidth;i++)
          pSrcTmp[i] = rand()%256;
      }
      pSrcTmp += iStride;
    }


    SPixMap sSrcMap = { { 0 } };
    SPixMap sRefMap = { { 0 } };

    sSrcMap.pPixel[0] = pSrc;
    sRefMap.pPixel[0] = pRef;
    sSrcMap.iStride[0] = sRefMap.iStride[0] = iStride;
    sSrcMap.sRect.iRectWidth = sRefMap.sRect.iRectWidth = iWidth;
    sSrcMap.sRect.iRectHeight = sRefMap.sRect.iRectHeight = iHeight;

    SScrollDetectionParam sScrollDetectionResult;
    WelsMemset (&sScrollDetectionResult, 0, sizeof (sScrollDetectionResult));
    int iCoreNum = 1;
    unsigned int uiCPUFlag = WelsCPUFeatureDetect (&iCoreNum);

    CScrollDetection *pTest =new CScrollDetection(uiCPUFlag);
    int iMethodIdx = METHOD_SCROLL_DETECTION;

    pTest->Set(iMethodIdx, (&sScrollDetectionResult));
    int ret = pTest->Process(iMethodIdx,&sSrcMap, &sRefMap);
    EXPECT_EQ(ret,0);
    pTest->Get(iMethodIdx, (&sScrollDetectionResult));

    EXPECT_EQ(sScrollDetectionResult.bScrollDetectFlag,1);
    EXPECT_EQ(sScrollDetectionResult.iScrollMvY,iScrollMv);

    delete pTest;
    delete []pSrc;
    delete []pRef;
  }
}