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[Linphone-developers] Segmentation Fault with snd_card_create_read_filte

From: George A. Papayiannis
Subject: [Linphone-developers] Segmentation Fault with snd_card_create_read_filter
Date: Mon, 29 Jan 2007 21:20:13 -0500

Hi folks,

When using mediastreamer through libjingle I'm getting a segmentation fault in snd_card_create_read_filter.
I'm having a hard time understanding whats going wrong or how to fix it.
I've pasted the gdb output below -- if someone, anyone, knows whats going on, please help me -- i've been killing myself trying to get this to work.


Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1221321840 (LWP 19005)]
snd_card_create_read_filter (obj=0x0) at sndcard.c:123
123             g_return_val_if_fail(obj->_create_read_filter!=NULL,NULL);
Current language:  auto; currently c
(gdb) bt full
#0  snd_card_create_read_filter (obj=0x0) at sndcard.c:123
        __PRETTY_FUNCTION__ = "snd_card_create_read_filter"
#1  0x0820235e in audio_stream_start_full (profile="" locport=2000, remip=0x820a476 "", remport=3000, payload=0, jitt_comp=250, infile=0x0,
    outfile=0x0, playcard=0x0, captcard=0x0) at audiostream.c:191
        stream = (AudioStream *) 0x82969d0
        rtps = <value optimized out>
        rtpr = (RtpSession *) 0x82969f8
        pt = <value optimized out>
#2  0x082024a2 in audio_stream_start (prof=0xb7f39860, locport=2000, remip=0x820a476 " ", remport=3000, profile="" jitt_comp=250) at audiostream.c:256
        sndcard = <value optimized out>
#3  0x080ddd63 in cricket::LinphoneMediaChannel::SetCodec (this=0x82942c0, codec=<value optimized out>) at
No locals.
#4  0x080dacaa in cricket::VoiceChannel::SetSendCodec_w (this=0x8296510) at
        codec = 0x8209541 "PCMU"
        __PRETTY_FUNCTION__ = "void cricket::VoiceChannel::SetSendCodec_w()"
#5  0x080dad44 in cricket::VoiceChannel::OnMessage (this=0x0, pmsg=0xb7341380) at
No locals.
#6  0x08141b27 in cricket::MessageQueue::Dispatch (this=0x82a0f80, pmsg=0xb7341380) at :318
No locals.
#7  0x08144a5c in cricket::Thread::Loop (this=0x82a0f80, cmsLoop=-1) at
        msg = {phandler = 0x8296510, message_id = 5, pdata = 0x0}
        msEnd = 3073643416
        cmsNext = -1
#8  0x08144bc2 in cricket::Thread::PreLoop (pv=0x82a0f80) at
No locals.
#9  0xb7f14112 in start_thread () from /lib/
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#10 0xb7c392ee in clone () from /lib/
No symbol table info available.

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