OpenEuphoria

'sequence' help wanted

• Posted by Wolf <wolfritz at KING.IGS.NET> Feb 10, 2002
• 456 views

Can anyone help me with ( phase 2 ) of a BI_RLE4 bitmap encoding algorithm ?
... given that I start with a sequence of {count,color,count,color...} pairs
like this...

line={
 #0B,#33,#2A,#44,#01,#77,#01,#88,
 #03,#11,#05,#66,#04,#33,#08,#33,
 #01,#33,#01,#44,#01,#33,#01,#44,#01,#33,
 #09,#77,#01,#33,#01,#44,#01,#33 }

In BI_RLE4, the 'alternating' same pairs with a count of one should be 'reduced'
as follows...
... where the new 'combined' color is simply:
= remainder(color1,16)*16 + remainder(color2,16).

result={
 #0B,#33,#2A,#44,#02,#78,
 #03,#11,#05,#66,#04,#33,#08,#33,
 #05,#34,
 #09,#77,#03,#34 }

... speed is a +,   TIA,
wolfritz at king.igs.net