Cast: Update simulator tool with more inputs.

media/cast/test/loopback_transport.cc

Index: media/cast/test/loopback_transport.cc
diff --git a/media/cast/test/loopback_transport.cc b/media/cast/test/loopback_transport.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a8d604d6879d563347ba21e1728d36d312c5950b
--- /dev/null
+++ b/media/cast/test/loopback_transport.cc
@@ -0,0 +1,65 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/cast/test/loopback_transport.h"
+
+#include "base/single_thread_task_runner.h"
+#include "base/time/tick_clock.h"
+#include "media/cast/test/utility/udp_proxy.h"
+
+namespace media {
+namespace cast {
+namespace {
+
+// Shim that turns forwards packets from a test::PacketPipe to a
+// PacketReceiverCallback.
+class LoopBackPacketPipe : public test::PacketPipe {
+ public:
+  LoopBackPacketPipe(
+      const transport::PacketReceiverCallback& packet_receiver)
+      : packet_receiver_(packet_receiver) {}
+
+  virtual ~LoopBackPacketPipe() {}
+
+  // PacketPipe implementations.
+  virtual void Send(scoped_ptr<transport::Packet> packet) OVERRIDE {
+    packet_receiver_.Run(packet.Pass());
+  }
+
+ private:
+  transport::PacketReceiverCallback packet_receiver_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoopBackPacketPipe);
+};
+
+}  // namespace
+
+LoopBackTransport::LoopBackTransport(
+    scoped_refptr<CastEnvironment> cast_environment)
+    : cast_environment_(cast_environment) {
+}
+
+bool LoopBackTransport::SendPacket(transport::PacketRef packet,
+                                   const base::Closure& cb) OVERRIDE {
+  DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
+  scoped_ptr<Packet> packet_copy(new Packet(packet->data));
+  packet_pipe_->Send(packet_copy.Pass());
+  return true;
+}
+
+void LoopBackTransport::Initialize(
+    scoped_ptr<test::PacketPipe> pipe,
+    const transport::PacketReceiverCallback& packet_receiver,
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+    base::TickClock* clock) {
+  scoped_ptr<test::PacketPipe> loopback_pipe(
+      new LoopBackPacketPipe(packet_receiver));
+  // Append the loopback pipe to the end.
+  pipe->AppendToPipe(loopback_pipe.Pass());
+  packet_pipe_ = pipe.Pass();
+  packet_pipe_->InitOnIOThread(task_runner, clock);
+}
+
+}  // namespace cast
+}  // namespace media