Unhandled exception at 0x........ in XXXX.exe: 0xC0000005:Access violation reading location 0x......

第一件事，检查下你传入的参数是否合法；

第二件事，若malloc了一块内存，必须记得free；

pOrg = pcPicYuvOrg->getLumaAddr();
	for( y = 0; y < height-1; y++ )
	{
		for( x = 0; x < width-1; x++ )
		{
			Pel A[4];
			//2x2
			A[0]=pOrg[x];	A[1]=pOrg[x+1];	
			A[2]=(pOrg+stride)[x];	A[3]=(pOrg+stride)[x+1];

			if( A[0]==255 && A[1]==255 && A[2]==255 && A[3]==255 )
			{
				pOrg[x] = 255;	pOrg[x+1] = 255;
				(pOrg+stride)[x] = 255;	(pOrg+stride)[x+1] = 255;
			}
			else
			{
				pOrg[x] = 0;	pOrg[x+1] = 0;
				(pOrg+stride)[x] = 0;	(pOrg+stride)[x+1] = 0;
			}
			x += 1;
		}
		pOrg += 2*stride;
	}

pOrg = pcPicYuvOrg->getLumaAddr();
	for( y = 0; y < height/2; y++ )
	{
		for( x = 0; x < width-1; x++ )
		{
			Pel A[4];
			//2x2
			A[0]=pOrg[x];	A[1]=pOrg[x+1];	
			A[2]=(pOrg+stride)[x];	A[3]=(pOrg+stride)[x+1];

			if( A[0]==255 && A[1]==255 && A[2]==255 && A[3]==255 )
			{
				pOrg[x] = 255;	pOrg[x+1] = 255;
				(pOrg+stride)[x] = 255;	(pOrg+stride)[x+1] = 255;
			}
			else
			{
				pOrg[x] = 0;	pOrg[x+1] = 0;
				(pOrg+stride)[x] = 0;	(pOrg+stride)[x+1] = 0;
			}
			x += 1;
		}
		pOrg += 2*stride;
	}