conf: rename and improve virDomainDefFindAudioForSound

The virDomainDefFindAudioForSound only takes a virDomainSoundDefPtr as
its arg, but we want to use the same functionality for VNC graphics.
In addition if audio ID is zero, then we want to return the first
available audio backend.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

src/bhyve/bhyve_command.c

@@ -765,7 +765,7 @@ virBhyveProcessBuildBhyveCmd(bhyveConnPtr driver, virDomainDefPtr def,
 
     for (i = 0; i < def->nsounds; i++) {
         if (bhyveBuildSoundArgStr(def, def->sounds[i],
-                                  virDomainDefFindAudioForSound(def, def->sounds[i]),
+                                  virDomainDefFindAudioByID(def, def->sounds[i]->audioId),
                                   driver, cmd) < 0)
             goto error;
     }

src/conf/domain_conf.c

@@ -30525,13 +30525,17 @@ virDomainDefFindDevice(virDomainDefPtr def,
 
 
 virDomainAudioDefPtr
-virDomainDefFindAudioForSound(virDomainDefPtr def,
+virDomainDefFindAudioByID(const virDomainDef *def,
-                              virDomainSoundDefPtr sound)
+                          int id)
 {
     size_t i;
+    if (id != 0) {
         for (i = 0; i < def->naudios; i++)
-        if (def->audios[i]->id == sound->audioId)
+            if (def->audios[i]->id == id)
                 return def->audios[i];
+    } else if (def->naudios) {
+        return def->audios[0];
+    }
 
     return NULL;
 }

src/conf/domain_conf.h

@@ -3813,8 +3813,8 @@ int virDomainDefFindDevice(virDomainDefPtr def,
                            bool reportError);
 
 virDomainAudioDefPtr
-virDomainDefFindAudioForSound(virDomainDefPtr def,
+virDomainDefFindAudioByID(const virDomainDef *def,
-                              virDomainSoundDefPtr sound);
+                          int id);
 bool
 virDomainSoundModelSupportsCodecs(virDomainSoundDefPtr def);
 

src/libvirt_private.syms

@@ -300,7 +300,7 @@ virDomainDefCheckABIStability;
 virDomainDefCheckABIStabilityFlags;
 virDomainDefCompatibleDevice;
 virDomainDefCopy;
-virDomainDefFindAudioForSound;
+virDomainDefFindAudioByID;
 virDomainDefFindDevice;
 virDomainDefFormat;
 virDomainDefFormatConvertXMLFlags;