Add gstsink to devicefinder

src/engine/alsadevicefinder.cpp

@@ -35,7 +35,7 @@
 #include "alsadevicefinder.h"
 
 AlsaDeviceFinder::AlsaDeviceFinder()
-    : DeviceFinder("alsa") {
+    : DeviceFinder("alsa", "alsasink") {
 
 }
 
@@ -59,18 +59,20 @@ QList<DeviceFinder::Device> AlsaDeviceFinder::ListDevices() {
     if (card < 0) break;
 
     char str[32];
+    snprintf(str, sizeof(str) - 1, "hw:%d", card);
+
     snd_ctl_t* handle;
-    snprintf(str, 31, "hw:%d", card);
     result = snd_ctl_open(&handle, str, 0);
     if (result < 0) {
       qLog(Error) << "Unable to open soundcard" << card << ":" << snd_strerror(result);
       continue;
     }
+    BOOST_SCOPE_EXIT(&handle) { snd_ctl_close(handle); }
+    BOOST_SCOPE_EXIT_END
+
     result = snd_ctl_card_info(handle, cardinfo);
     if (result < 0) {
       qLog(Error) << "Control hardware failure for card" << card << ":" << snd_strerror(result);
-      BOOST_SCOPE_EXIT(&handle) { snd_ctl_close(handle); }
-      BOOST_SCOPE_EXIT_END
       continue;
     }
 
@@ -103,8 +105,6 @@ QList<DeviceFinder::Device> AlsaDeviceFinder::ListDevices() {
       ret.append(device);
 
     }
-    BOOST_SCOPE_EXIT(&handle) { snd_ctl_close(handle); }
-    BOOST_SCOPE_EXIT_END
   }
 
   snd_config_update_free_global();