This bug is about Wireless Bitmaps (WBMP) in IrfanView.
I'm playing around with WBMP just for the fun and learning the history of computer graphics.
I was reading at the oldschool WAP specification, and learned that a WBMP image file uses 1 BPP.
Please read it over here: http://openmobilealliance.org/tech/a...20010515-a.pdf on page 11.
The specification is saying:
WBMP type 0 has the following characteristics:•No compression•Colour: one bit represents a pixel (white=1, black=0). •Depth: 1 bit deep (monochrome) •The high bit of each byte is the left-most pixel of the byte.•The first row in the data is the upper row of the image.
Then I was looking for a test WBMP file to see how IrfanView displays it. I found one on this webpage:
http://fileformats.archiveteam.org/wiki/WBMP the direct link to the WBMP image is: https://telparia.com/fileFormatSamples/image/test.wbmp
When I open it in Irfanview 4.54 - 64 Bit it says at the bottom:
800 x 600 x 8 BPP.
When I open the Image properties, IrfanView shows: 256 (8 BitsPerPixel) at the Original colors.
Now, I want to talk about the 8 BPP, because it contradicts the specification.
The question I have is: is IrfanView showing the wrong BPP or is it something else ??
Kind regards,
I'm playing around with WBMP just for the fun and learning the history of computer graphics.
I was reading at the oldschool WAP specification, and learned that a WBMP image file uses 1 BPP.
Please read it over here: http://openmobilealliance.org/tech/a...20010515-a.pdf on page 11.
The specification is saying:
WBMP type 0 has the following characteristics:•No compression•Colour: one bit represents a pixel (white=1, black=0). •Depth: 1 bit deep (monochrome) •The high bit of each byte is the left-most pixel of the byte.•The first row in the data is the upper row of the image.
Then I was looking for a test WBMP file to see how IrfanView displays it. I found one on this webpage:
http://fileformats.archiveteam.org/wiki/WBMP the direct link to the WBMP image is: https://telparia.com/fileFormatSamples/image/test.wbmp
When I open it in Irfanview 4.54 - 64 Bit it says at the bottom:
800 x 600 x 8 BPP.
When I open the Image properties, IrfanView shows: 256 (8 BitsPerPixel) at the Original colors.
Now, I want to talk about the 8 BPP, because it contradicts the specification.
The question I have is: is IrfanView showing the wrong BPP or is it something else ??
Kind regards,