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diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index 74d1d1a..17ffb12 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -2042,6 +2042,19 @@ static const char *const build_in_pcms[] = {
NULL
};
+
+// helper funcion used below
+int file_exists(const char * filename)
+{
+ FILE * file;
+ if (file = fopen(filename, "r"))
+ {
+ fclose(file);
+ return 1;
+ }
+ return 0;
+}
+
static int snd_pcm_open_conf(snd_pcm_t **pcmp, const char *name,
snd_config_t *pcm_root, snd_config_t *pcm_conf,
snd_pcm_stream_t stream, int mode)
@@ -2141,8 +2154,38 @@ static int snd_pcm_open_conf(snd_pcm_t **pcmp, const char *name,
err = -ENOMEM;
goto _err;
}
- lib = buf1;
sprintf(buf1, "%s/libasound_module_pcm_%s.so", ALSA_PLUGIN_DIR, str);
+ if (!file_exists(buf1)){
+ // try to locate plugin in one of ALSA_PLUGIN_DIRS which is colon separated list of paths
+ char * pdirs = getenv("ALSA_PLUGIN_DIRS");
+
+ if (pdirs){ // env var set?
+ char * saveptr;
+ while (1) {
+ char * dir_tok = strtok_r(pdirs, "::::", &saveptr); // "::::" to work around bug in glibc and -O2 ? ":" seems to cause a segfault
+ if (dir_tok == NULL)
+ break;
+ char * so_file = malloc(strlen(str) + strlen(dir_tok) + 32);
+ if (so_file == NULL) {
+ err = -ENOMEM;
+ goto _err;
+ }
+
+ sprintf(so_file, "%s/libasound_module_pcm_%s.so", dir_tok, str);
+
+ if (file_exists(so_file)){
+
+ free(buf1);
+ buf1 = so_file;
+ break;
+ } else {
+ free (so_file);
+ }
+ pdirs = NULL;
+ }
+ }
+ }
+ lib = buf1;
}
}
#ifndef PIC
|