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kuniklo 28 December 2004 09:20 pm

xmms-musepack crashes on amd64 bit machine
Has anyone else experienced this? Seems to crash it every time I try to play an mpc file. I'll look into this if nobody else is already.

kuniklo 28 December 2004 11:06 pm

Ok. I think I've figured out what's going on here.

The current xmms-musepack plugin code links in both glib-1.2 and glib-2.0. According to this bug in the redhat bug database:

this is a no-no. I'm not sure why it only manifests itself on amd64 machines.

As a workaround I've just commented out the calls to the glib-2.0 utf8 string conversions functions, which seem to be the only reason the code needs glib-2.0. As an added bonus, I've ported the xmms plugin code to the new C libmusepack.

This work in progress is available on my svn server ( and

It seems like a better solution would be to change the code to use libiconv for character conversion, right? At least I can listen to my mpc files on my amd64 machine now. :)

Lefungus 29 December 2004 12:16 pm

And then I lose all my unicode tags, so the libiconv is a better solution indeed.

kuniklo 29 December 2004 06:58 pm

Ok. I've switched the conversion routine over to iconv and checked in the patch in svn. Seems to be working fine for reading tags, but I can't seem to write tags using the XMMS plugin.

Was this working before? I don't think I ever tried it.

kuniklo 29 December 2004 09:19 pm

I've ported the bmp plugin over to the new C libmusepack as well. All the code is in my svn, as usual.

kuniklo 29 December 2004 11:26 pm

Also, here's the glib -> iconv patch for the current xmms-musepack-1.1, if we want to release an updated version without waiting for the new C libmusepack.

diff -ru xmms-musepack-1.1/src/libmpc.cpp xmms-musepack-1.1-patched/src/libmpc.cpp
--- xmms-musepack-1.1/src/libmpc.cpp 2004-11-28 08:15:57.000000000 -0800
+++ xmms-musepack-1.1-patched/src/libmpc.cpp 2004-12-29 15:21:10.810832296 -0800
@@ -12,6 +12,7 @@
#include <glib.h>
#include <gtk/gtk.h>
+#include <iconv.h>
#include <math.h>
#include "tags.h"
#include "equalizer.h"
@@ -115,12 +116,28 @@

-static char* convertUTF8toLocale(char* utf8) {
- char* temp=g_locale_from_utf8 (utf8, -1, NULL, NULL, NULL);
- if(temp==NULL)
- return g_strdup(utf8);
- else
- return temp;
+static char*
+convertUTF8toLocale(char* utf8)
+ // note - opens a new iconv descriptor for each call
+ // will have to find a way to reuse the descriptor if this turns
+ // out to be too slow
+ iconv_t idesc = iconv_open("", "UTF-8");
+ if (idesc == (iconv_t) -1) {
+ perror("iconv_open failed");
+ return g_strdup(utf8);
+ }
+ size_t in_left = strlen(utf8);
+ size_t out_left = 2 * in_left + 1;
+ char *buf = (char *)g_malloc(out_left);
+ char *in = utf8;
+ char *out = buf;
+ memset(buf, 0, out_left);
+ size_t err = iconv(idesc, &in, &in_left, &out, &out_left);
+ iconv_close(idesc);
+ return buf;

static void convertLE32to16(MPC_SAMPLE_FORMAT* sample_buffer, char* xmms_buffer, unsigned int status) {

Lefungus 04 January 2005 04:49 pm

Updated !

Mr_Rabid_Teddybear 05 January 2005 07:18 am


Updated !
INSTALL still says:

Xmms-musepack plugin
GTK-1.2 headers and libs
Glib-2.0 headers and libs
Xmms-1.2.10 headers and binaries
To install:
run "./configure && make" as user
run "make install" as root
and in README theres no mention of changes for 1.1.1

Shouldn't Glib-2.0 be removed from list of dependencies? And aren't iconv a new dependency - or did I get that wrong?

Lefungus 05 January 2005 10:46 am

Forgot to update text files... Fixed package will be online soon. Code is unchanged.

kuniklo 05 January 2005 05:45 pm

I've ported the lamip plugin over to libmusepack as well. It's in my svn.

xmixahlx 05 January 2005 08:41 pm

i've told fred (lamip dev) of your changes and he'll port it to the 0.0.3 API

thanx kuniklo :)

the lamip devs could use some help if you are interested in the player


kuniklo 05 January 2005 09:04 pm

Great. I'll see if I can find any time to help out with lamip. I've got several things I want to do with musepack first.

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