bt & main: Add optional player for device

1 files changed, 47 insertions, 0 deletions

diff --git a/src/bt.hh b/src/bt.hh
index 588a328..bc7cd84 100644
--- a/src/bt.hh
+++ b/src/bt.hh
@@ -23,6 +23,7 @@ class Config;
 namespace bt {
 
 class Device;
+class Player;
 
 class Adapter {
  public:
@@ -84,12 +85,51 @@ class Device {
   [[nodiscard]]
   virtual bool connected() const = 0;
 
+  // Returns null if there are no players.
+  // Otherwise, returns the "primary" player.
+  [[nodiscard]]
+  virtual Player* player() const = 0;
+
  protected:
   Device() = default;
   Device(Device const&) = delete;
   Device& operator=(Device const&) = delete;
 };
 
+class Player {
+ public:
+  virtual ~Player() = default;
+
+  enum class Status : uint8_t {
+    kPlaying,
+    kStopped,
+    kPaused,
+    kForwardSeek,
+    kReverseSeek,
+    kError,
+  };
+
+  [[nodiscard]]
+  virtual Status status() const = 0;
+
+  [[nodiscard]]
+  virtual std::string const& track_title() const = 0;
+
+  [[nodiscard]]
+  virtual std::string const& track_artist() const = 0;
+
+  [[nodiscard]]
+  virtual std::string const& track_album() const = 0;
+
+  virtual void play() = 0;
+  virtual void pause() = 0;
+
+ protected:
+  Player() = default;
+  Player(Player const&) = delete;
+  Player& operator=(Player const&) = delete;
+};
+
 class Manager {
  public:
   virtual ~Manager() = default;
@@ -110,6 +150,13 @@ class Manager {
     // Called when device changes a property.
     virtual void updated_device(Device& /* device */) {}
 
+    // Called when a new player is added to a device.
+    virtual void added_player(Device& /* device */, Player& /* player */) {}
+    // Called when a player was removed from a device.
+    virtual void removed_player(Device& /* device */) {}
+    // Called when a device player changes a property.
+    virtual void updated_player(Device& /* device */, Player& /* player */) {}
+
     virtual void agent_request_pincode(
         Device& device,
         std::function<void(std::optional<std::string>)> callback) = 0;