Greg Ewing wrote, On 28/05/11 8:55 PM:
> Can anyone think of an efficient way to convert a string
> full of RGBA image data to BGRA, using only what's available
> in the standard library?
How fast is this approach compared to what you have tried?
input = cStringIO.StringIO(myrgba)
c1 = input.read(1)
while c1:
c2 = input.read(1)
c3 = input.read(1)
c4 = input.read(1)
output.write(c3)
output.write(c2)
output.write(c1)
output.write(c4)
c1 = input.read(1)
mybgra = output.getvalue()
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