Impala Documentation

template<class ArrayT>

void Impala::Core::Array::ReadPgm	(	ArrayT *&	dst,
		Util::IOBuffer *	buffer
	)			`[inline]`

Definition at line 43 of file ReadPgm.h.

References ILOG_DEBUG, ILOG_ERROR, ILOG_VAR, Impala::Util::IOBuffer::NativeTypeRead(), Impala::Util::IOBuffer::Read(), and SkipEmpty().

Referenced by ReadPgm().

00044 {
00045     ILOG_VAR(Impala.Core.Array.ReadPgm);
00046     char c;
00047     bool IsAscii;
00048     int Width,Height,MaxVal;
00049     
00050 
00051     buffer->Read(&c,1);
00052     if(c!='P')
00053     {
00054         ILOG_ERROR("File is not in PGM format! Was waiting for P,but "<<c);
00055         return;
00056     }
00057 
00058     buffer->Read(&c,1);
00059     if(c=='2')
00060         IsAscii=true;
00061     else if(c=='5')
00062         IsAscii=false;
00063     else
00064     {
00065         ILOG_ERROR("File is not in PGM format! "<<c);
00066         return;
00067     }
00068     SkipEmpty(buffer);
00069 
00070     buffer->NativeTypeRead(&Width);
00071     buffer->NativeTypeRead(&Height);
00072     buffer->NativeTypeRead(&MaxVal);
00073 
00074     ILOG_DEBUG("PGM Image with "<<Width<<"x"<<Height<<", maxval:"<<MaxVal);
00075     
00076 
00077     if(MaxVal>255){
00078         ILOG_ERROR("MaxVal is greater than 255");
00079         return;
00080     }
00081 
00082     if (dst == 0)
00083         dst = ArrayCreate<ArrayT>(Width, Height);
00084     
00085     if(IsAscii){
00086         for(int k=0;k<Width;k++)
00087         {
00088             for(int l=0;l<Height;l++)
00089             {
00090                 buffer->NativeTypeRead(&c);
00091                 dst->SetValue(c,l,k);
00092             }
00093         }
00094     }else{
00095         int read=buffer->Read(dst->PB(),Width*Height);
00096         if(read!=Width*Height){
00097             ILOG_ERROR("Not Enough bytes could be read!");
00098             return;
00099         }
00100 
00101     }
00102 }

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