Hi Dan,
I found out that Frei0r plugins with F0R_PARAM_STRING parameters
crashed when clips with these plugins were displayed. Both Flowblade
and Kdenlive crashed with identical backtraces.
This did not affect "Curves" in Kdenlive which I assume uses
"frei0r.curves" plugin which also has a F0R_PARAM_STRING parameter.
After "frei0r.cairoaffineblend" compositor was added in Flowblade I
got this backtrace
every time a composited frame was displayed:
(gdb) backtrace
#0 0x00007ffff7012d9f in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fff883d987b in f0r_set_param_value (instance=0x7fff9472d820,
param=<optimized out>, param_index=<optimized out>)
at
/home/janne/codes/frei0r-repository/frei0r/src/mixer2/cairoaffineblend/cairoaffineblend.c:175
#2 0x00007fffdae4bd8e in process_frei0r_item ()
from /usr/lib/x86_64-linux-gnu/mlt/libmltfrei0r.so
#3 0x00007fffdae4b9fd in ?? ()
from /usr/lib/x86_64-linux-gnu/mlt/libmltfrei0r.so
#4 0x00007ffff602ad9a in mlt_frame_get_image ()
from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#5 0x00007ffff603dc2d in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#6 0x00007ffff602ad9a in mlt_frame_get_image ()
from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#7 0x00007ffff603ac4d in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#8 0x00007ffff7bc4f8e in start_thread ()
from /lib/x86_64-linux-gnu/libpthread.so.0
#9 0x00007ffff6fcbe1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
This is code from cairoaffineblend.c
case 6:
sval = (*(char**)param);
inst->blend_mode = (char*) realloc (inst->blend_mode, strlen(sval) + 1);
strcpy (inst->blend_mode, sval);
Adding "frei0r.medians" filter in Kdenlive produces this backtrace
when any frame of clip was displayed:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc14c1700 (LWP 16126)]
0x00007ffff29d0d9f in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) backtrace
#0 0x00007ffff29d0d9f in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fffb9df9544 in f0r_set_param_value (instance=0x7fffb42bfba0,
parm=<optimized out>, param_index=<optimized out>)
at
/home/janne/codes/frei0r-repository/frei0r/src/filter/medians/medians.c:502
#2 0x00007fffcf97ed8e in process_frei0r_item ()
from /usr/lib/x86_64-linux-gnu/mlt/libmltfrei0r.so
#3 0x00007fffcf97e87e in ?? ()
from /usr/lib/x86_64-linux-gnu/mlt/libmltfrei0r.so
#4 0x00007ffff4931d9a in mlt_frame_get_image ()
from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#5 0x00007ffff4944c2d in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#6 0x00007ffff4931d9a in mlt_frame_get_image ()
from /usr/lib/x86_64-linux-gnu/libmlt.so.5
#7 0x00007fffc6b35cb0 in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
#8 0x00007ffff44f6f8e in start_thread ()
from /lib/x86_64-linux-gnu/libpthread.so.0
#9 0x00007ffff2989e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
This is the code in medians.c
case 0: //(string based list)
tmpch = (*(char**)parm);
p->liststr = (char*)realloc( p->liststr, strlen(tmpch) + 1 );
THIS IS LINE 502
strcpy( p->liststr, tmpch );
p->type=0;
while ((strcmp(p->liststr,list1[p->type])!=0)&&(p->type<10)) p->type++;
break;
Assuming Kdenlive uses "frei0r.curves" I discovered that this plugin
did not crash.
Corresponding code from "frei0r.curves".
case 5:
bspline = *((f0r_param_string *)param);
if (strcmp(inst->bspline, bspline) != 0) {
free(inst->bspline);
inst->bspline = strdup(bspline);
updateBsplineMap(instance);
}
Do you have any Idea what is going on?
Regards,
Janne Liljeblad
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