[player] Add player_speaker_authorize()

A more straightforward function for device verification, using the new
outputs_device_authorize() function.

src/player.c

@@ -147,6 +147,8 @@ struct speaker_attr_param
 
   bool prevent_playback;
   bool busy;
+
+  const char *pin;
 };
 
 struct speaker_get_param
@@ -1552,7 +1554,7 @@ device_activate_cb(struct output_device *device, enum output_device_state status
   retval = commands_exec_returnvalue(cmdbase);
   if (!device)
     {
-      DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during startup!\n");
+      DPRINTF(E_WARN, L_PLAYER, "Output device disappeared during activation!\n");
 
       if (retval != -2)
 	retval = -1;
@@ -2752,6 +2754,24 @@ speaker_resurrect_bh(void *arg, int *retval)
   return COMMAND_END;
 }
 
+static enum command_state
+speaker_authorize(void *arg, int *retval)
+{
+  struct speaker_attr_param *param = arg;
+  struct output_device *device;
+
+  device = outputs_device_get(param->spk_id);
+  if (!device)
+    return COMMAND_END;
+
+  *retval = outputs_device_authorize(device, param->pin, device_activate_cb);
+
+  if (*retval > 0)
+    return COMMAND_PENDING; // async
+
+  return COMMAND_END;
+}
+
 static enum command_state
 volume_set(void *arg, int *retval)
 {
@@ -3227,6 +3247,20 @@ player_speaker_resurrect(void *arg)
   commands_exec_sync(cmdbase, speaker_resurrect, speaker_resurrect_bh, &param);
 }
 
+int
+player_speaker_authorize(uint64_t id, const char *pin)
+{
+  struct speaker_attr_param param;
+  int ret;
+
+  param.spk_id = id;
+  param.pin = pin;
+
+  ret = commands_exec_sync(cmdbase, speaker_authorize, speaker_generic_bh, &param);
+
+  return ret;
+}
+
 int
 player_volume_set(int vol)
 {

src/player.h

@@ -114,6 +114,9 @@ player_speaker_busy_set(uint64_t id, bool busy);
 void
 player_speaker_resurrect(void *arg);
 
+int
+player_speaker_authorize(uint64_t id, const char *pin);
+
 int
 player_playback_start(void);