add player whitelist support, enhance readme

src/main.rs

@@ -18,8 +18,11 @@ use std::collections::HashMap;
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(default)]
 pub struct BlacklistConf {
+    /// Literal tags to reject
     pub tag: Vec<String>,
+    /// Tag sub-strings to reject (must be a whole word)
     pub tag_partial: Vec<String>,
+    /// Artists to reject
     pub artist: Vec<String>,
 }
 
@@ -41,7 +44,9 @@ impl Default for BlacklistConf {
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(default)]
 pub struct WhiteList {
+    /// Tags to allow despite e.g. a substring match
     pub tag: Vec<String>,
+    /// Artists to allow
     pub artist: Vec<String>,
 }
 
@@ -59,6 +64,8 @@ impl Default for WhiteList {
 pub struct Config {
     /// Logging - trace, debug, (info), warning, error
     pub logging: String,
+    /// Players to handle (empty = all)
+    pub allowed_players: Vec<String>,
     /// Blacklists
     pub blacklist: BlacklistConf,
     /// Whitelist (overrides blacklist)
@@ -81,6 +88,7 @@ impl Default for Config {
     fn default() -> Self {
         Self {
             logging: "info".to_owned(),
+            allowed_players: vec![],
             blacklist: BlacklistConf::default(),
             whitelist: WhiteList::default(),
             artist_min_score: 95,
@@ -137,12 +145,20 @@ fn main() -> Result<(), Error> {
 
     'main_loop:
     loop {
+        // XXX this picks the first player, which isn't always ideal - see mpris/src/find.rs
         let player = PlayerFinder::new()
             .expect("Could not connect to D-Bus")
             .find_active();
 
         if let Ok(player) = player {
-            info!("Connected to player: {}{}", player.bus_name().to_string(), player.unique_name());
+            let player_name = player.bus_name().to_string();
+            if !config.allowed_players.is_empty() && !config.allowed_players.contains(&player_name) {
+                debug!("Ignoring player {}", player_name);
+                ::std::thread::sleep(Duration::from_millis(config.player_find_interval_ms));
+                continue 'main_loop;
+            }
+
+            info!("Connected to player: {}{}", player_name, player.unique_name());
 
             let events = player.events();
             if events.is_err() {