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September 21, 2003 jpegs | ||||
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On wx-dev Mailing list Daniel walter wrote: In jmorecfg.h boolean has a typedef as int which prevents jpegs from loading. If I change this to unsigned char it works. I am not sure exactly where this change should be made. It would be nice to get boolean from the compiler to be compatible with C++ or maybe not use boolean in C code. I am using Code Warrior for windows if this needs to be platform specific. This problem was quite a pain to find thougth as the first symptom was a seg fault and after digging deeper the next thing I got was struct sizes don't match, so it would be nice to prevent people porting to other compilers from finding this one the hard way. ----------- I see the same bug with the image sample on loading the jpeg image I tried debugging it but got in a tangle chris |
October 02, 2003 Re: jpegs | ||||
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Posted in reply to chris elliott | The problem is the structsize of jpeg_decompress_struct which differ between the jpeg-lib and wxwindows-lib. (464 vs 432) To solve this change the file: %WXIR%\src\jpeg\jconfig.h and add the next define to line 5: -----------------------<snip>----------------------------------------- VVVVVVVVVVVVVVVVVVVV #if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__DMC__) #include "jconfig.vc" #else -----------------------<snip>----------------------------------------- recompile the jpeglib and you should be fine. Arjan Knepper chris elliott wrote: > On wx-dev Mailing list Daniel walter wrote: > > In jmorecfg.h boolean has a typedef as int which prevents jpegs from > loading. If I change this to unsigned char it works. > > I am not sure exactly where this change should be made. It would be nice to > get boolean from the compiler to be compatible with C++ or maybe not use > boolean in C code. > > I am using Code Warrior for windows if this needs to be platform specific. > This problem was quite a pain to find thougth as the first symptom was a seg > fault and after digging deeper the next thing I got was struct sizes don't > match, so it would be nice to prevent people porting to other compilers from > finding this one the hard way. > > ----------- > I see the same bug with the image sample on loading the jpeg image > I tried debugging it but got in a tangle > chris > > |
October 02, 2003 Re: jpegs | ||||
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Posted in reply to Arjan Knepper | Thanks for finding this- I have fixed it in the CVS code
chris
Arjan Knepper wrote:
> The problem is the structsize of jpeg_decompress_struct which differ between the jpeg-lib and wxwindows-lib. (464 vs 432)
>
> To solve this change the file:
>
> %WXIR%\src\jpeg\jconfig.h
>
> and add the next define to line 5:
> -----------------------<snip>-----------------------------------------
> VVVVVVVVVVVVVVVVVVVV
> #if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__DMC__)
> #include "jconfig.vc"
> #else
> -----------------------<snip>-----------------------------------------
>
> recompile the jpeglib and you should be fine.
>
> Arjan Knepper
>
> chris elliott wrote:
>
>> On wx-dev Mailing list Daniel walter wrote:
>>
>> In jmorecfg.h boolean has a typedef as int which prevents jpegs from
>> loading. If I change this to unsigned char it works.
>>
>> I am not sure exactly where this change should be made. It would be nice to
>> get boolean from the compiler to be compatible with C++ or maybe not use
>> boolean in C code.
>>
>> I am using Code Warrior for windows if this needs to be platform specific.
>> This problem was quite a pain to find thougth as the first symptom was a seg
>> fault and after digging deeper the next thing I got was struct sizes don't
>> match, so it would be nice to prevent people porting to other compilers from
>> finding this one the hard way.
>>
>> -----------
>> I see the same bug with the image sample on loading the jpeg image
>> I tried debugging it but got in a tangle
>> chris
>>
>>
>
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