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authorLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
committerLennart Poettering <lennart@poettering.net>2006-06-19 21:53:48 +0000
commitf44ba092651aa75055e109e04b4164ea92ae7fdc (patch)
tree5dfe076191b32946e78edf64d584d0a65f320013 /src/pulsecore/modinfo.c
parentdd21f11deda64e65a6f75817496534c2c9dda1a8 (diff)
big s/polyp/pulse/g
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/modinfo.c')
-rw-r--r--src/pulsecore/modinfo.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/pulsecore/modinfo.c b/src/pulsecore/modinfo.c
new file mode 100644
index 00000000..adefdb46
--- /dev/null
+++ b/src/pulsecore/modinfo.c
@@ -0,0 +1,93 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <ltdl.h>
+#include <assert.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-util.h>
+#include <pulsecore/log.h>
+
+#include "modinfo.h"
+
+#define PA_SYMBOL_AUTHOR "pa__get_author"
+#define PA_SYMBOL_DESCRIPTION "pa__get_description"
+#define PA_SYMBOL_USAGE "pa__get_usage"
+#define PA_SYMBOL_VERSION "pa__get_version"
+
+/* lt_dlsym() violates ISO C, so confide the breakage into this function to
+ * avoid warnings. */
+typedef void (*fnptr)(void);
+static inline fnptr lt_dlsym_fn(lt_dlhandle handle, const char *symbol) {
+ return (fnptr) (long) lt_dlsym(handle, symbol);
+}
+
+pa_modinfo *pa_modinfo_get_by_handle(lt_dlhandle dl) {
+ pa_modinfo *i;
+ const char* (*func)(void);
+ assert(dl);
+
+ i = pa_xnew0(pa_modinfo, 1);
+
+ if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_AUTHOR)))
+ i->author = pa_xstrdup(func());
+
+ if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_DESCRIPTION)))
+ i->description = pa_xstrdup(func());
+
+ if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_USAGE)))
+ i->usage = pa_xstrdup(func());
+
+ if ((func = (const char* (*)(void)) lt_dlsym_fn(dl, PA_SYMBOL_VERSION)))
+ i->version = pa_xstrdup(func());
+
+ return i;
+}
+
+pa_modinfo *pa_modinfo_get_by_name(const char *name) {
+ lt_dlhandle dl;
+ pa_modinfo *i;
+ assert(name);
+
+ if (!(dl = lt_dlopenext(name))) {
+ pa_log(__FILE__": Failed to open module \"%s\": %s", name, lt_dlerror());
+ return NULL;
+ }
+
+ i = pa_modinfo_get_by_handle(dl);
+ lt_dlclose(dl);
+
+ return i;
+}
+
+void pa_modinfo_free(pa_modinfo *i) {
+ assert(i);
+ pa_xfree(i->author);
+ pa_xfree(i->description);
+ pa_xfree(i->usage);
+ pa_xfree(i->version);
+ pa_xfree(i);
+}