Re: [Libvisual-devel] possible bug in gforce

[salsaman <sal...@xs...>]

Dennis Smit wrote:

>Hmms, 'accident' is a very simply script. Can you run LiVES from
>console and get a backtrace that way ?
>
>Thanks,
>Dennis
>
>
>On Sat, 2004-09-25 at 01:06 +0100, salsaman wrote:
>  
>
>>Hi Dennis,
>>I think there could be a bug or two in gforce. I got a hang just playing 
>>the visual, no mixing, no other clips open. This has happened a few 
>>times, but because it generally hangs my whole X server I can't get a 
>>backtrace.
>>
>>Anyway some, maybe all of these hangs appear to be connected with "New 
>>Delta Field: Accident". Maybe you could have a quick check in this 
>>module and see if there is anything suspicious.
>>
>>Cheers,
>>Salsaman.
>>
>>
>>
>>
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OK, it's not always Accident:

here:

libvisual INFO: no progname: New Particle: Airport
libvisual DEBUG: no progname: void WaveShape::Load(ArgList&, long int) 
[(WaveShape.cpp,70)]: The number of bins requested: 40
libvisual INFO: no progname: New wave shape: Arena
libvisual DEBUG: no progname: void WaveShape::Load(ArgList&, long int) 
[(WaveShape.cpp,70)]: The number of bins requested: 100
libvisual INFO: no progname: Looking up expression in dict: MAG




Program received signal SIGINT, Interrupt.
0x40b8322a in ExprVirtualMachine::Execute() (this=0x40b83224)
    at ExprVirtualMachine.cpp:301
301                                                     v1 = temp * v2 + 
( 1.0 - temp ) * v1;
Current language:  auto; currently c++
(gdb) bt
#0  0x40b8322a in ExprVirtualMachine::Execute() (this=0x40b83224)
    at ExprVirtualMachine.cpp:301
#1  0x40b829bd in ExprArray::Evaluate() (this=0x83024c0) at Expression.h:24
#2  0x40b7e852 in WaveShape::Draw(long, PixPort&, float, WaveShape*, 
float) (
    this=0x830240c, inNumSteps=200, inDest=@0x830125c, inFader=1,
    inWave2=0x8302204, inMorphPct=1) at WaveShape.cpp:255
#3  0x40b7a925 in GForce::RecordSample(long) (this=0x83011d0, inCurTime=43)
    at G-Force.cpp:1169
#4  0x40b7a772 in GForce::RecordSample(long, float*, float, long, 
float*, float, long) (this=0x83011d0, inCurTime=896842995, 
inSound=0xbfffddb0, inScale=3.15730381,
    inNumBins=200, inFFT=0xbfffdae0, inFFTScale=1, inFFTNumBins=180)
    at G-Force.cpp:1123
#5  0x40b93ce5 in lv_gforce_render (plugin=0x40b83224, video=0x40b83224,
    audio=0x83011d0) at actor_gforce.cpp:228
#6  0x40a93218 in visual_actor_run () from /usr/lib/libvisual.so.0
#7  0x407b0e70 in libvis_process ()
   from /usr//share/lives/plugins/effects/realtime/livido/libvis
#8  0x08067cb0 in gdk_pixbuf_new_from_generator (src=0x832bf00, error=0x0)
    at effects-livido.c:368
Cannot access memory at address 0x1e0



I guess it's the "cannot access memory at address 0x1e0" that is causing 
problems.


Salsaman.