[ENH] PNGReadWriter writing support & alpha fixes (v3)

Avi Bryant avi at beta4.com
Fri Feb 13 00:16:33 UTC 2004


On Feb 12, 2004, at 2:35 PM, Bert Freudenberg wrote:

>
> Am 12.02.2004 um 23:03 schrieb Andreas Raab:
>
>> This is now v3 which fixes a bad, bad CRC issue, adds CRC validation 
>> and
>> hopefully fixes the byte-sex problems.
>>
>> Avi - if you give this a try and the tests fail, can you send me the
>> generated test images (they will be written out automatically). 
>> Off-list
>> please ;-)
>
> Oh, it's worse than before - it crashes the MacVM (log attached for 
> John)! After commenting out test8BitDisplay the tests run with this 
> result: 24 run, 23 passed, 0 failed, 1 error. The error is in 
> test4BitDisplay (error out of bounds in ZipEncoder. But the tests seem 
> to be wrong too, as none of the generated test images can be loaded by 
> another application (Preview in my case). I'll send the images 
> off-line.

Hm... I get 24 run, 24 passed (I tried the 3.6.1beta3, 3.7.1beta2, and 
3.6g-2 VMs).  But the images are still corrupt.

Bert, did you load v3 into a clean image or on top of v2?  I'm 
wondering what the difference might be.
I'm using the 3.6basic image.




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