tux-droid-user

[tuxdroid-user] cvoicecontrol: strace microphone_config

[Florent T. <ft...@gm...>]

Hi

strace microphone_config

open("/usr/share/terminfo/x/xterm", O_RDONLY) = 3
geteuid32()                             = 1000
setfsuid32(1000)                        = 1000
getegid32()                             = 1000
setfsgid32(1000)                        = 1000
read(3, "\32\1\34\0\35\0\17\0\235\1&\5", 12) = 12
read(3, "xterm|X11 terminal emulator\0", 28) = 28
read(3, "\0\1\0\0\1\0\0\0\1\0\0\0\0\1\1\0\0\0\0\0\0\0\1\0\0\1\0"..., 29) = 29
read(3, "\0", 1)                        = 1
read(3, "P\0\10\0\30\0\377\377\377\377\377\377\377\377\377\377\377"..., 30) = 30
read(3, "\0\0\4\0\6\0\10\0\31\0\36\0&\0*\0.\0\377\3779\0J\0L\0P"..., 826) = 826
lseek(3, 2, SEEK_CUR)                   = 928
read(3, "Z\0\7\0\r\0\33[%i%p1%d;%p2%dr\0\33[3g\0\33[H\33"..., 1318) = 1316
close(3)                                = 0
write(2, "Error opening terminal: xterm.\n", 31Error opening terminal: xterm.
) = 31

Any idea? This prevents using cvoicecontrol. If we manage to find a
working cvoicecontrol config file, we could circumvent it; my guess
is, /usr/share/terminfo/x/xterm has changed since cvoicecontrol
release.

Re: [tuxdroid-user] cvoicecontrol: strace microphone_config

[Florent T. <ft...@gm...>]

This very line shows that today's file is shorter: it attempts to read
1318 chars, and stops after 1316.

read(3, "Z\0\7\0\r\0\33[%i%p1%d;%p2%dr\0\33[3g\0\33[H\33"..., 1318) = 1316

I crawled into the sources, but didn't find anywhere any info
regarding the terminal :(

Re: [tuxdroid-user] cvoicecontrol: strace microphone_config

[Florent T. <ft...@gm...>]

So... I tried something else:

i opened microphone_config in Eterm... And it works ! Well, until you
try writing the config file:

 *** glibc detected *** microphone_config: munmap_chunk(): invalid
pointer: 0xbff26e91 ***
======= Backtrace: =========
x    Calcux                                                          x
        x
       /lib/tls/i686/cmov/libc.so.6(__libc_free+0x18a)[0xb7e4eb4a]
x    Estimx                                                          x
        x

microphone_config[0x804d967]
x         x
x    Exit x                microphone_config[0x804e757]              x         x
x         x
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7dfd8cc]
x         x                                                          x
        x
microphone_config(tcgetattr+0x69)[0x8049011]
x         x                                                          x
        x
                     ======= Memory map: ========
x         mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
        x
                                                 08048000-08050000
r-xp 00000000 08:06 677410     /usr/bin/microphone_config
        x
x
08050000-08051000 rwxp 00007000 08:06 677410
/usr/bin/microphone_config
x
        x
08051000-08074000 rwxp 08051000 00:00 0          [heap]
x
        x
                                             b7ddb000-b7de5000 r-xp
00000000 08:06 852035     /lib/libgcc_s.so.1
       x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqb7de5000-b7de6000 rwxp
00009000 08:06 852035     /lib/libgcc_s.so.1

                                         b7de6000-b7de8000 rwxp
b7de6000 00:00 0


          b7de8000-b7f15000 r-xp 00000000 08:06 852256
/lib/tls/i686/cmov/libc-2.4.so
                      b7f15000-b7f17000 r-xp 0012c000 08:06 852256
/lib/tls/i686/cmov/libc-2.4.so

                              b7f17000-b7f19000 rwxp 0012e000 08:06
852256     /lib/tls/i686/cmov/libc-2.4.so


                                      b7f19000-b7f1c000 rwxp b7f19000
00:00 0
           b7f1c000-b7f4e000 r-xp 00000000 08:06 852621
/lib/libncurses.so.4.2

           b7f4e000-b7f56000 rwxp 00031000 08:06 852621
/lib/libncurses.so.4.2


           b7f56000-b7f5a000 rwxp b7f56000 00:00 0


                                                   b7f5a000-b7f7e000
r-xp 00000000 08:06 852260     /lib/tls/i686/cmov/libm-2.4.so

b7f7e000-b7f80000 rwxp 00023000 08:06 852260
/lib/tls/i686/cmov/libm-2.4.so


b7f91000-b7f93000 rwxp b7f91000 00:00 0


                                        b7f93000-b7fac000 r-xp
00000000 08:06 851990     /lib/ld-2.4.so
                                    b7fac000-b7fae000 rwxp 00018000
08:06 851990     /lib/ld-2.4.so

                            bfef3000-bff27000 rwxp bfef3000 00:00 0
      [stack]


             ffffe000-fffff000 ---p 00000000 00:00 0          [vdso]
 Abandon (core dumped)

Nice, isnt it... :(

Re: [tuxdroid-user] cvoicecontrol: strace microphone_config

[Florent T. <ft...@gm...>]

It seems that the config file is the main problem, so when we get a
working config file, we shall  finally evaluate cvoice control.

In microphone_config.c: 1153

  /***** output configuration information to config file */

  fprintf(f, "Mixer Device    = %s\n", getMixer());
  fprintf(f, "Audio Device    = %s\n", getAudio());
  fprintf(f, "Mic Level       = %d\n", mic_level);
  fprintf(f, "IGain Level     = %d\n", igain_level);
  fprintf(f, "Record Level    = %d\n", rec_level);
  fprintf(f, "Stop Level      = %d\n", stop_level);
  fprintf(f, "Silence Level   = %d\n", silence_level);
  fprintf(f, "Channel Mean    =");
  for (i = 0; i < FEAT_VEC_SIZE; i++)
    fprintf(f, " %6.5f", channel_mean[i]);
  fprintf(f, "\n");
  fclose(f);

Maybe the method used to open the file / write into it is too old, and
should be reimplemented. As we can see here, the file is pretty
simple.

Options:
- find an existing config file and adjust it by hand
- debug the program to find the stored values before writing and handwrite
- rewrite the storing procedure