TPA header

[Slion]

Hi,

What’s the exact content of the TPA header? Could you publish its format?
It looks like TPA is just PNG with an extra 128bits header.

By the way I can’t load any TPA I saved, it always crashes saying EXCEPTION_ACCESS_VIOLATION (WinXP)
It looks like the first two 32bits values in the header are twice the width and height of everyframe for some reason…
I’m running version 1.25.

Cheers,
S.

[imported_peterigz]

Hello, the 128bit header consists of 4 32bit ints containing the width,height, number of frames and the total size of the png.

Here’s the actual save function in Blitzmax:

Function saveTPA(filename:String, anim:TPixmap, w:Int, h:Int, frames:Int)

Local tempstream:TStream = WriteStream(filename)

Local tempbank:TBank = CreateBank()

SavePixmapPNG(anim, tempbank)

WriteInt(tempstream, w)

WriteInt(tempstream, h)

WriteInt(tempstream, frames)

WriteInt(tempstream, BankSize(tempbank))

WriteBank(tempbank, tempstream, 0, BankSize(tempbank))

tempstream.Close()

End Function

Can you upload an example TPA that you’re trying to load, as I can’t seem to recreate that error here. Thanks!

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