Re: rc3 - yuvscaler crash with -M BICUBIC

sorry for the late (e-mail problems)

Steven M. Schultz a écrit :
> On Thu, 6 Dec 2007, herve.flores wrote:
> 
>> Hi this bug is not specific to rc3 (same behavior for rc2, I didn't =20
>> test earlier versions)

I just noticed it last day,
so I compiled the previous version to know if I could reproduce the 
crash (I didn't know it before RC3 release ;-))


>> seems to occurs with -M BICUBIC ...
> 	...
>>     INFO: [yuvscaler] MMX accelerated treatment activated
>> YUV4MPEG2 W720 H576 F25:1 Ib A64:45 C420mpeg2 XYSCSS=3D420MPEG2
>>     INFO: [yuvscaler] output:   frame size:  720x576 pixels (622080 =20
>> bytes)
>>     INFO: [yuvscaler] output:       chroma:  4:2:0 MPEG-2 (horiz. =20
>> cositing)
>>     INFO: [yuvscaler] output:   frame rate:  25/1 fps (~25.000000)
>>     INFO: [yuvscaler] output:    interlace:  bottom-field-first
>>     INFO: [yuvscaler] output: sample aspect ratio:  64:45
>>     INFO: [yuvscaler] Frame number 0
>> FRAME
>> [h264 @ 0x5c8790]AVC: Consumed only 11410 bytes instead of 11420
>> [h264 @ 0x5c8790]AVC: nal size 0
>> [h264 @ 0x5c8790]AVC: Consumed only 58093 bytes instead of 58108
>> [h264 @ 0x5c8790]AVC: nal size 0
>> Segmentation fault
> 
> 	I have checked in a "workaround" to the problem and yuvscaler no
> 	longer crashes on OSX 10.5.1 on a MacBookPro.  I am not, however,
> 	100% certain the fix is the best one but it's the best I can do.
> 
> 	An intermdiate buffer was apparently being overrun.  I am not sure
> 	if there is a flaw in the logic of the program or the buffer was too
> 	small.  I increased the size of the buffer and the crash no longer
> 	happens.

You did your own tests.
Do you still need a backtrace with gdb? (if you want I could access to 
intel and a PPC mac, both with Leopard)

Regards

Hervé

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