Alexander,
I figured out where I went wrong. I was trying to pass integer pointers
for pcm_l and pcm_r. Unfortunately, now I am totally confused. How do I
get the pcm data back from the function without pointer and when the
function returns number of frames?
Helplessly lost . . .
Deven Phillips
On Tue, 2004-01-13 at 09:37, Deven Phillips wrote:
> Alexander,
>
> Thanks for the info. I'm rather new to gdb, and thos two other commands
> helped a lot, but not with the ipow20() call. Here's the output.
>
> #0 0x400afa2a in lame_decode1_headersB (buffer=0x0, len=0,
> pcm_l=0x112a4e5, pcm_r=0x6112a4e5,
> mp3data=0x112a4e5, enc_delay=0x0, enc_padding=0x0) at
> mpglib_interface.c:137
> 137 pcm_l[i] = *p++;
> (gdb) bt
> #0 0x400afa2a in lame_decode1_headersB (buffer=0x0, len=0,
> pcm_l=0x112a4e5, pcm_r=0x6112a4e5,
> mp3data=0x112a4e5, enc_delay=0x0, enc_padding=0x0) at
> mpglib_interface.c:137
> #1 0x4011ae60 in ipow20 () from /usr/lib/libmp3lame.so.0
> (gdb) up 1
> #1 0x4011ae60 in ipow20 () from /usr/lib/libmp3lame.so.0
> (gdb) list
> 137 pcm_l[i] = *p++;
> 138 pcm_r[i] = *p++;
> 139 }
> 140 break;
> 141 default:
> 142 processed_samples = -1;
> 143 assert(0);
> 144 break;
> 145 }
> 146 break;
>
> Also, the version is 3.93.1.
>
> TIA,
>
> Deven
>
> On Tue, 2004-01-13 at 02:14, Alexander Leidinger wrote:
> > On Tue, 13 Jan 2004 01:45:34 -1000
> > Deven Phillips <[EMAIL PROTECTED]> wrote:
> >
> > > I have been working with LAME for a total of about one week now, and I
> > > am now running into an error I can't seem to make any progress with.
> > > When I run my program, it segfaults and a gdb backtrace shows:
> > >
> > > #0 0x400a0aa4 in lame_decode1_headersB () from /usr/lib/libmp3lame.so.0
> > > (gdb) bt
> > > #0 0x400a0aa4 in lame_decode1_headersB () from /usr/lib/libmp3lame.so.0
> > > #1 0x40108820 in ipow20 () from /usr/lib/libmp3lame.so.0
> > > #2 0x8000287d in ?? ()
> > > Cannot access memory at address 0x63652d9d
> > >
> > > Any ideas why the ipow20 function would be segfaulting?
> >
> > Which version of lame? Please compile with debug options and provide the
> > output of gdb with the commands "bt", "up 1", "list" (order is
> > important).
> >
> > Bye,
> > Alexander.
>
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