src/media/cast/test/loopback_transport.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/cast/test/loopback_transport.h"
   6
   7 #include "base/single_thread_task_runner.h"
   8 #include "base/time/tick_clock.h"
   9 #include "media/cast/test/utility/udp_proxy.h"
  10
  11 namespace media {
  12 namespace cast {
  13 namespace {
  14
  15 // Shim that turns forwards packets from a test::PacketPipe to a
  16 // PacketReceiverCallback.
  17 class LoopBackPacketPipe : public test::PacketPipe {
  18  public:
  19   LoopBackPacketPipe(
  20       const PacketReceiverCallback& packet_receiver)
  21       : packet_receiver_(packet_receiver) {}
  22
  23   ~LoopBackPacketPipe() override {}
  24
  25   // PacketPipe implementations.
  26   void Send(scoped_ptr<Packet> packet) override {
  27     packet_receiver_.Run(packet.Pass());
  28   }
  29
  30  private:
  31   PacketReceiverCallback packet_receiver_;
  32
  33   DISALLOW_COPY_AND_ASSIGN(LoopBackPacketPipe);
  34 };
  35
  36 }  // namespace
  37
  38 LoopBackTransport::LoopBackTransport(
  39     scoped_refptr<CastEnvironment> cast_environment)
  40     : cast_environment_(cast_environment),
  41       bytes_sent_(0) {
  42 }
  43
  44 LoopBackTransport::~LoopBackTransport() {
  45 }
  46
  47 bool LoopBackTransport::SendPacket(PacketRef packet,
  48                                    const base::Closure& cb) {
  49   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
  50   scoped_ptr<Packet> packet_copy(new Packet(packet->data));
  51   packet_pipe_->Send(packet_copy.Pass());
  52   bytes_sent_ += packet->data.size();
  53   return true;
  54 }
  55
  56 int64 LoopBackTransport::GetBytesSent() {
  57   return bytes_sent_;
  58 }
  59
  60 void LoopBackTransport::Initialize(
  61     scoped_ptr<test::PacketPipe> pipe,
  62     const PacketReceiverCallback& packet_receiver,
  63     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
  64     base::TickClock* clock) {
  65   scoped_ptr<test::PacketPipe> loopback_pipe(
  66       new LoopBackPacketPipe(packet_receiver));
  67   // Append the loopback pipe to the end.
  68   pipe->AppendToPipe(loopback_pipe.Pass());
  69   packet_pipe_ = pipe.Pass();
  70   packet_pipe_->InitOnIOThread(task_runner, clock);
  71 }
  72
  73 }  // namespace cast
  74 }  // namespace media