linking: move find-media-role-target hook to run later in the chain

A defined target should have priority over a role-based target

src/scripts/linking/README.rst

@@ -92,6 +92,10 @@ processed while targets are being selected.
      - find-filter-target.lua
      - Select the target of a filter node, if the subject is a filter node
 
+   * - linking/find-media-role-target
+     - find-media-role-target.lua
+     - Select the target based on the stream's media.role and the target's device.intended-roles
+
    * - linking/find-default-target
      - find-default-target.lua
      - Select the default source/sink as target

src/scripts/linking/find-default-target.lua

@@ -11,7 +11,7 @@ log = Log.open_topic ("s-linking")
 
 SimpleEventHook {
   name = "linking/find-default-target",
-  after = "linking/find-filter-target",
+  after = "linking/find-media-role-target",
   interests = {
     EventInterest {
       Constraint { "event.type", "=", "select-target" },

src/scripts/linking/find-defined-target.lua

@@ -15,7 +15,6 @@ log = Log.open_topic ("s-linking")
 
 SimpleEventHook {
   name = "linking/find-defined-target",
-  after = "linking/find-media-role-target",
   interests = {
     EventInterest {
       Constraint { "event.type", "=", "select-target" },

src/scripts/linking/find-media-role-target.lua

@@ -12,6 +12,7 @@ log = Log.open_topic("s-linking")
 
 SimpleEventHook {
   name = "linking/find-media-role-target",
+  after = "linking/find-filter-target",
   interests = {
     EventInterest {
       Constraint { "event.type", "=", "select-target" },