[Peep-develop] Building peep using ALSA?

[Nolan D. <no...@bi...>]

Apologies if this issue is being beaten to death as I write this, and
if the list archives haven't caught up (nothing is listed for this
month.)

I'm trying to build peep on my Debian 2.2/2.3 box, using ALSA
0.59D. I'm encountering several issues, and have run into a stumbling
block.

First, let me just state that I'm not an ALSA expert. The extent of my
efforts to fix these apparent ALSA difficulties involves changing a
few type names, etc.

First, I encountered this error:

gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I.    -g -O2 -c VoiceMixer.c
VoiceMixer.c: In function `MixerInit':
VoiceMixer.c:49: `SND_PCM_OPEN_PLAYBACK' undeclared (first use in this function)
VoiceMixer.c:49: (Each undeclared identifier is reported only once
VoiceMixer.c:49: for each function it appears in.)
VoiceMixer.c:55: `SND_PCM_SFMT_S16_LE' undeclared (first use in this function)
make[2]: *** [VoiceMixer.o] Error 1
make[2]: Leaving directory `/home/nolan/src/peep/Peep-0.3.4/server'

I looked at Sound.h, and the following lines were commented out:

/* Include these headers for ALSA definitions */
#include <sys/asoundlib.h>
#include <linux/asound.h>
/*#include <linux/asoundid.h>*/

I uncommented them, and commented out the last include which I don't
seem to have in my version of ALSA. It seems odd that the includes
were commented out while the defines were not; is ALSA support not
up-to-date?

VoiceMixer.c compiles, and everything runs smoothly until AlsaSound.c:
gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I.    -g -O2 -c AlsaSound.c
AlsaSound.c: In function `GetSoundCardInfo':
AlsaSound.c:47: `snd_pcm_playback_info_t' undeclared (first use in this function)
AlsaSound.c:47: (Each undeclared identifier is reported only once
AlsaSound.c:47: for each function it appears in.)
AlsaSound.c:47: `info' undeclared (first use in this function)
AlsaSound.c:48: parse error before `static'
AlsaSound.c:51: `err' undeclared (first use in this function)
AlsaSound.c:53: warning: passing arg 2 of `strcat' makes pointer from integer without a cast
AlsaSound.c:59: `s' undeclared (first use in this function)
AlsaSound.c: In function `GetSoundStatus':
AlsaSound.c:70: `snd_pcm_playback_status_t' undeclared (first use in this function)
AlsaSound.c:70: `status' undeclared (first use in this function)
AlsaSound.c:71: parse error before `static'
AlsaSound.c:74: `err' undeclared (first use in this function)
AlsaSound.c:76: warning: passing arg 2 of `strcat' makes pointer from integer without a cast
AlsaSound.c:81: `s' undeclared (first use in this function)
AlsaSound.c: In function `SetSoundFormat':
AlsaSound.c:99: `snd_pcm_format_t' undeclared (first use in this function)
AlsaSound.c:99: parse error before `format'
AlsaSound.c:101: `format' undeclared (first use in this function)
AlsaSound.c:109: warning: passing arg 2 of `strcat' makes pointer from integer without a cast
make: *** [AlsaSound.o] Error 1

Fun. :) <grepgrep manglemangle C-xs make>. I changed
snd_pcm_playback_info_t to snd_pcm_info_t, and made a bit of progress.

My next big stumbling block is with sound_card_info. Namely, WTH do I
find the thing? :) rgreps in the Peep source directory don't reveal
anything, nor does a rgrep in /usr/include. I'm relatively sure it exists since
gcc doesn't complain about it not being defined, but instead complains
about structure members. But, I can't seem to find the structure to
try to fix this.

One more thing (geez when will this guy shut up?!? :) I mucked with
the configure.in to disable ALSA, hoping that the device driver
support might work instead. But the latest peepd segfaults. Here's a
transcript of the server startup:

===========================================
Welcome to PEEP (the network auralizer).
Copyright (C) 2000 Michael Gilfix
===========================================

Initializing Sound Engine...
Used 32 voices.
Loading peep.conf and Sound Samples into memory...
Depending on your machine and sound files, this may take a while.
Sound Initialization complete.
Starting Mixer thread...
Starting Engine thread...
Initializing server thread...
Segmentation fault

And the last few lines of strace output (if they help.):

open("/etc/protocols", O_RDONLY)        = 37
fcntl(37, F_GETFD)                      = 0
fcntl(37, F_SETFD, FD_CLOEXEC)          = 0
fstat(37, {st_mode=S_IFREG|0644, st_size=1748, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40ee8000
read(37, "# /etc/protocols:\n# $Id: protoco"..., 4096) = 1748
close(37)                               = 0
munmap(0x40ee8000, 4096)                = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 37
setsockopt(37, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0
bind(37, {sin_family=AF_INET, sin_port=htons(2001), sin_addr=inet_addr("0.0.0.0")}}, 16) = 0
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++

gdb shows:

0x400e6741 in strcpy () from /lib/libc.so.6
(gdb) bt
bt
#0  0x400e6741 in strcpy () from /lib/libc.so.6
#1  0x804a424 in ServerInit (p=2001) at Server.c:129
#2  0x8049413 in main (argc=1, argv=0xbffffc4c) at Main.c:209

Hope this helps some.