Package: zsnes
Version: 1.510-2
Followup-For: Bug #470410
Hi,
I got same problem.
And I have investigated the source code of zsnes.
(zsnes-1.510/src/linux/audio.c)
First of all, I put "printf" at many places.
And I know the important function "SoundWriteSamples_ao" is never called.
It seems the execution is stopped at this:
pthread_cond_wait(&audio_wait, &audio_mutex); //Wait for signal
Normally, the execution will be unblocked when
pthread_cond_broadcast(&audio_wait); //Send signal
is called in other thread.
But it seems doesn't unblock the thread.
I found a interested things in the source code.
Although audio_wait must be initialized before using it,
here is a code for initialization:
if (pthread_create(&audio_thread, 0, SoundThread_ao, 0))
{
puts("pthread_create() failed.");
}
else if (pthread_mutex_init(&audio_mutex, 0))
{
puts("pthread_mutex_init() failed.");
}
else if (pthread_cond_init(&audio_wait, 0))
{
puts("pthread_cond_init() failed.");
}
Creates a thread, and then initializes the mutex.
Hmmm... I think these order are wrong.
Before audio_wait has initialized, it may be referred in the thread newly
created.
I changed the order as follow (initialize the mutex before creating a thread)
and zsens sound has works correctly.
if (pthread_mutex_init(&audio_mutex, 0))
{
puts("pthread_mutex_init() failed.");
}
else if (pthread_cond_init(&audio_wait, 0))
{
puts("pthread_cond_init() failed.");
}
else if (pthread_create(&audio_thread, 0, SoundThread_ao, 0))
{
puts("pthread_create() failed.");
}
I hope this helps,
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core)
Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages zsnes depends on:
ii libao2 0.8.8-4 Cross Platform Audio Output Librar
ii libc6 2.7-10 GNU C Library: Shared libraries
ii libgcc1 1:4.3.0-3 GCC support library
ii libgl1-mesa-glx [libgl 7.0.3~rc2-2 A free implementation of the OpenG
ii libpng12-0 1.2.15~beta5-3 PNG library - runtime
ii libsdl1.2debian 1.2.13-2 Simple DirectMedia Layer
ii libstdc++6 4.3.0-3 The GNU Standard C++ Library v3
ii zlib1g 1:1.2.3.3.dfsg-11 compression library - runtime
zsnes recommends no packages.
-- no debconf information
diff -ur zsnes-1.510.orig/src/linux/audio.c zsnes-1.510/src/linux/audio.c
--- zsnes-1.510.orig/src/linux/audio.c 2007-01-10 10:19:12.000000000 +0900
+++ zsnes-1.510/src/linux/audio.c 2008-04-08 16:32:57.000000000 +0900
@@ -177,11 +177,7 @@
}
else
{
- if (pthread_create(&audio_thread, 0, SoundThread_ao, 0))
- {
- puts("pthread_create() failed.");
- }
- else if (pthread_mutex_init(&audio_mutex, 0))
+ if (pthread_mutex_init(&audio_mutex, 0))
{
puts("pthread_mutex_init() failed.");
}
@@ -189,6 +185,10 @@
{
puts("pthread_cond_init() failed.");
}
+ else if (pthread_create(&audio_thread, 0, SoundThread_ao, 0))
+ {
+ puts("pthread_create() failed.");
+ }
InitSampleControl();
}
