Simplify interface for media/cast: CastTransportSenderImpl

media/cast/net/cast_transport_sender.h

Index: media/cast/net/cast_transport_sender.h
diff --git a/media/cast/net/cast_transport_sender.h b/media/cast/net/cast_transport_sender.h
index b20c9df0488a06dc0ae5f4529abde83ae0431961..6f5dca44729d2ca72ae577b0d7352abf49d66cfe 100644
--- a/media/cast/net/cast_transport_sender.h
+++ b/media/cast/net/cast_transport_sender.h
@@ -56,17 +56,69 @@ typedef base::Callback<void(scoped_ptr<std::vector<FrameEvent>>,
 // The application should only trigger this class from the transport thread.
 class CastTransportSender : public base::NonThreadSafe {
  public:
-  static scoped_ptr<CastTransportSender> Create(
-      net::NetLog* net_log,
-      base::TickClock* clock,
-      const net::IPEndPoint& local_end_point,
-      const net::IPEndPoint& remote_end_point,
-      scoped_ptr<base::DictionaryValue> options,
-      const CastTransportStatusCallback& status_callback,
-      const BulkRawEventsCallback& raw_events_callback,
-      base::TimeDelta raw_events_callback_interval,
-      const PacketReceiverCallback& packet_callback,
-      const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner);
+  // Interface to create a cast transport sender / receiver.
+  class CastTransportClient {
+   public:
+    // Audio and Video transport status change is reported on this callback.
+    virtual void OnStatusChange(CastTransportStatus status) = 0;
+
+    // Raw events will be invoked on this callback every
+    // |logging_flush_interval|. If the user is not interested in raw events,
+    // |logging_flush_interval| should be set to |base::TimeDelta|.
+    virtual void OnReceivedLoggingEvents(
+        scoped_ptr<std::vector<FrameEvent>>,
+        scoped_ptr<std::vector<PacketEvent>>) = 0;
+
+    // Incoming packets that do not match the channels created by
+    // Initialize{Audio,Video} will report to this callback.
+    virtual void OnReceivedPackets(scoped_ptr<Packet> packet) = 0;
+
+   protected:
+    virtual ~CastTransportClient();
+  };
+
+  // Parameters to create a cast transport sender / receiver.
+  // |options| contains optional settings for the transport, possible
+  // keys are:
+  //   "DSCP" (value ignored)
+  //       - Turns DSCP on (higher IP Precedence and Type of Service).
+  //   "disable_non_blocking_io" (value ignored)
+  //       - Windows only.  Turns off non-blocking IO for the socket.
+  //         Note: Non-blocking IO is, by default, enabled on all platforms.
+  //   "pacer_target_burst_size": int
+  //        - Specifies how many packets to send per 10 ms ideally.
+  //   "pacer_max_burst_size": int
+  //        - Specifies how many pakcets to send per 10 ms, maximum.
+  //   "send_buffer_min_size": int
+  //        - Specifies the minimum socket send buffer size.
+  //   "disable_wifi_scan" (value ignored)
+  //        - Disable wifi scans while streaming.
+  //   "media_streaming_mode" (value ignored)
+  //        - Turn media streaming mode on.
+  // Note, these options may be ignored on some platforms.
+  struct CreateParams {
+    CreateParams(
+        net::NetLog* log,
+        base::TickClock* input_clock,
+        net::IPEndPoint local_addr,
+        net::IPEndPoint remote_addr,
+        CastTransportClient* transport_client,
+        base::TimeDelta transport_logging_flush_interval,
+        scoped_ptr<base::DictionaryValue> options,
+        const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
+    ~CreateParams();
+
+    net::NetLog* net_log;
+    base::TickClock* clock;
+    net::IPEndPoint local_end_point;
+    net::IPEndPoint remote_end_point;
+    CastTransportClient* client;
+    base::TimeDelta logging_flush_interval;
+    scoped_ptr<base::DictionaryValue> optional_config;
+    const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner;
+  };
+
+  static scoped_ptr<CastTransportSender> Create(const CreateParams& params);
 
   virtual ~CastTransportSender() {}