[Cast] Clean-up: Merge RtpReceiver+AudioReceiver+VideoReceiver-->FrameReceiver.

media/cast/audio_receiver/audio_receiver_unittest.cc

Index: media/cast/audio_receiver/audio_receiver_unittest.cc
diff --git a/media/cast/audio_receiver/audio_receiver_unittest.cc b/media/cast/audio_receiver/audio_receiver_unittest.cc
deleted file mode 100644
index e53c1b93102d9e5af3670221008570d0bffef37e..0000000000000000000000000000000000000000
--- a/media/cast/audio_receiver/audio_receiver_unittest.cc
+++ /dev/null
@@ -1,261 +0,0 @@
-// Copyright 2013 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 <deque>
-#include <utility>
-
-#include "base/bind.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/test/simple_test_tick_clock.h"
-#include "media/cast/audio_receiver/audio_receiver.h"
-#include "media/cast/cast_defines.h"
-#include "media/cast/cast_environment.h"
-#include "media/cast/logging/simple_event_subscriber.h"
-#include "media/cast/rtcp/test_rtcp_packet_builder.h"
-#include "media/cast/test/fake_single_thread_task_runner.h"
-#include "media/cast/test/utility/default_config.h"
-#include "media/cast/transport/pacing/mock_paced_packet_sender.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-using ::testing::_;
-
-namespace media {
-namespace cast {
-
-namespace {
-
-const uint32 kFirstFrameId = 1234;
-const int kPlayoutDelayMillis = 300;
-
-class FakeAudioClient {
- public:
-  FakeAudioClient() : num_called_(0) {}
-  virtual ~FakeAudioClient() {}
-
-  void AddExpectedResult(uint32 expected_frame_id,
-                         const base::TimeTicks& expected_playout_time) {
-    expected_results_.push_back(
-        std::make_pair(expected_frame_id, expected_playout_time));
-  }
-
-  void DeliverEncodedAudioFrame(
-      scoped_ptr<transport::EncodedFrame> audio_frame) {
-    SCOPED_TRACE(::testing::Message() << "num_called_ is " << num_called_);
-    ASSERT_FALSE(!audio_frame)
-        << "If at shutdown: There were unsatisfied requests enqueued.";
-    ASSERT_FALSE(expected_results_.empty());
-    EXPECT_EQ(expected_results_.front().first, audio_frame->frame_id);
-    EXPECT_EQ(expected_results_.front().second, audio_frame->reference_time);
-    expected_results_.pop_front();
-    num_called_++;
-  }
-
-  int number_times_called() const { return num_called_; }
-
- private:
-  std::deque<std::pair<uint32, base::TimeTicks> > expected_results_;
-  int num_called_;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeAudioClient);
-};
-
-}  // namespace
-
-class AudioReceiverTest : public ::testing::Test {
- protected:
-  AudioReceiverTest() {
-    // Configure the audio receiver to use PCM16.
-    audio_config_ = GetDefaultAudioReceiverConfig();
-    audio_config_.rtp_max_delay_ms = kPlayoutDelayMillis;
-    audio_config_.frequency = 16000;
-    audio_config_.channels = 1;
-    audio_config_.codec.audio = transport::kPcm16;
-    testing_clock_ = new base::SimpleTestTickClock();
-    testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
-    start_time_ = testing_clock_->NowTicks();
-    task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
-
-    cast_environment_ = new CastEnvironment(
-        scoped_ptr<base::TickClock>(testing_clock_).Pass(),
-        task_runner_,
-        task_runner_,
-        task_runner_);
-
-    receiver_.reset(new AudioReceiver(cast_environment_, audio_config_,
-                                      &mock_transport_));
-  }
-
-  virtual ~AudioReceiverTest() {}
-
-  virtual void SetUp() {
-    payload_.assign(kMaxIpPacketSize, 0);
-    rtp_header_.is_key_frame = true;
-    rtp_header_.frame_id = kFirstFrameId;
-    rtp_header_.packet_id = 0;
-    rtp_header_.max_packet_id = 0;
-    rtp_header_.reference_frame_id = rtp_header_.frame_id;
-    rtp_header_.rtp_timestamp = 0;
-  }
-
-  void FeedOneFrameIntoReceiver() {
-    receiver_->OnReceivedPayloadData(
-        payload_.data(), payload_.size(), rtp_header_);
-  }
-
-  void FeedLipSyncInfoIntoReceiver() {
-    const base::TimeTicks now = testing_clock_->NowTicks();
-    const int64 rtp_timestamp = (now - start_time_) *
-        audio_config_.frequency / base::TimeDelta::FromSeconds(1);
-    CHECK_LE(0, rtp_timestamp);
-    uint32 ntp_seconds;
-    uint32 ntp_fraction;
-    ConvertTimeTicksToNtp(now, &ntp_seconds, &ntp_fraction);
-    TestRtcpPacketBuilder rtcp_packet;
-    rtcp_packet.AddSrWithNtp(audio_config_.incoming_ssrc,
-                             ntp_seconds, ntp_fraction,
-                             static_cast<uint32>(rtp_timestamp));
-    receiver_->IncomingPacket(rtcp_packet.GetPacket().Pass());
-  }
-
-  FrameReceiverConfig audio_config_;
-  std::vector<uint8> payload_;
-  RtpCastHeader rtp_header_;
-  base::SimpleTestTickClock* testing_clock_;  // Owned by CastEnvironment.
-  base::TimeTicks start_time_;
-  transport::MockPacedPacketSender mock_transport_;
-  scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_;
-  scoped_refptr<CastEnvironment> cast_environment_;
-  FakeAudioClient fake_audio_client_;
-
-  // Important for the AudioReceiver to be declared last, since its dependencies
-  // must remain alive until after its destruction.
-  scoped_ptr<AudioReceiver> receiver_;
-};
-
-TEST_F(AudioReceiverTest, ReceivesOneFrame) {
-  SimpleEventSubscriber event_subscriber;
-  cast_environment_->Logging()->AddRawEventSubscriber(&event_subscriber);
-
-  EXPECT_CALL(mock_transport_, SendRtcpPacket(_, _))
-      .WillRepeatedly(testing::Return(true));
-
-  FeedLipSyncInfoIntoReceiver();
-  task_runner_->RunTasks();
-
-  // Enqueue a request for an audio frame.
-  receiver_->GetEncodedAudioFrame(
-      base::Bind(&FakeAudioClient::DeliverEncodedAudioFrame,
-                 base::Unretained(&fake_audio_client_)));
-
-  // The request should not be satisfied since no packets have been received.
-  task_runner_->RunTasks();
-  EXPECT_EQ(0, fake_audio_client_.number_times_called());
-
-  // Deliver one audio frame to the receiver and expect to get one frame back.
-  const base::TimeDelta target_playout_delay =
-      base::TimeDelta::FromMilliseconds(kPlayoutDelayMillis);
-  fake_audio_client_.AddExpectedResult(
-      kFirstFrameId, testing_clock_->NowTicks() + target_playout_delay);
-  FeedOneFrameIntoReceiver();
-  task_runner_->RunTasks();
-  EXPECT_EQ(1, fake_audio_client_.number_times_called());
-
-  std::vector<FrameEvent> frame_events;
-  event_subscriber.GetFrameEventsAndReset(&frame_events);
-
-  ASSERT_TRUE(!frame_events.empty());
-  EXPECT_EQ(FRAME_ACK_SENT, frame_events.begin()->type);
-  EXPECT_EQ(AUDIO_EVENT, frame_events.begin()->media_type);
-  EXPECT_EQ(rtp_header_.frame_id, frame_events.begin()->frame_id);
-  EXPECT_EQ(rtp_header_.rtp_timestamp, frame_events.begin()->rtp_timestamp);
-
-  cast_environment_->Logging()->RemoveRawEventSubscriber(&event_subscriber);
-}
-
-TEST_F(AudioReceiverTest, ReceivesFramesSkippingWhenAppropriate) {
-  EXPECT_CALL(mock_transport_, SendRtcpPacket(_, _))
-      .WillRepeatedly(testing::Return(true));
-
-  const uint32 rtp_advance_per_frame =
-      audio_config_.frequency / audio_config_.max_frame_rate;
-  const base::TimeDelta time_advance_per_frame =
-      base::TimeDelta::FromSeconds(1) / audio_config_.max_frame_rate;
-
-  FeedLipSyncInfoIntoReceiver();
-  task_runner_->RunTasks();
-  const base::TimeTicks first_frame_capture_time = testing_clock_->NowTicks();
-
-  // Enqueue a request for an audio frame.
-  const FrameEncodedCallback frame_encoded_callback =
-      base::Bind(&FakeAudioClient::DeliverEncodedAudioFrame,
-                 base::Unretained(&fake_audio_client_));
-  receiver_->GetEncodedAudioFrame(frame_encoded_callback);
-  task_runner_->RunTasks();
-  EXPECT_EQ(0, fake_audio_client_.number_times_called());
-
-  // Receive one audio frame and expect to see the first request satisfied.
-  const base::TimeDelta target_playout_delay =
-      base::TimeDelta::FromMilliseconds(kPlayoutDelayMillis);
-  fake_audio_client_.AddExpectedResult(
-      kFirstFrameId, first_frame_capture_time + target_playout_delay);
-  rtp_header_.rtp_timestamp = 0;
-  FeedOneFrameIntoReceiver();
-  task_runner_->RunTasks();
-  EXPECT_EQ(1, fake_audio_client_.number_times_called());
-
-  // Enqueue a second request for an audio frame, but it should not be
-  // fulfilled yet.
-  receiver_->GetEncodedAudioFrame(frame_encoded_callback);
-  task_runner_->RunTasks();
-  EXPECT_EQ(1, fake_audio_client_.number_times_called());
-
-  // Receive one audio frame out-of-order: Make sure that we are not continuous
-  // and that the RTP timestamp represents a time in the future.
-  rtp_header_.is_key_frame = false;
-  rtp_header_.frame_id = kFirstFrameId + 2;
-  rtp_header_.reference_frame_id = 0;
-  rtp_header_.rtp_timestamp += 2 * rtp_advance_per_frame;
-  fake_audio_client_.AddExpectedResult(
-      kFirstFrameId + 2,
-      first_frame_capture_time + 2 * time_advance_per_frame +
-          target_playout_delay);
-  FeedOneFrameIntoReceiver();
-
-  // Frame 2 should not come out at this point in time.
-  task_runner_->RunTasks();
-  EXPECT_EQ(1, fake_audio_client_.number_times_called());
-
-  // Enqueue a third request for an audio frame.
-  receiver_->GetEncodedAudioFrame(frame_encoded_callback);
-  task_runner_->RunTasks();
-  EXPECT_EQ(1, fake_audio_client_.number_times_called());
-
-  // Now, advance time forward such that the receiver is convinced it should
-  // skip Frame 2.  Frame 3 is emitted (to satisfy the second request) because a
-  // decision was made to skip over the no-show Frame 2.
-  testing_clock_->Advance(2 * time_advance_per_frame + target_playout_delay);
-  task_runner_->RunTasks();
-  EXPECT_EQ(2, fake_audio_client_.number_times_called());
-
-  // Receive Frame 4 and expect it to fulfill the third request immediately.
-  rtp_header_.frame_id = kFirstFrameId + 3;
-  rtp_header_.reference_frame_id = rtp_header_.frame_id - 1;
-  rtp_header_.rtp_timestamp += rtp_advance_per_frame;
-  fake_audio_client_.AddExpectedResult(
-      kFirstFrameId + 3, first_frame_capture_time + 3 * time_advance_per_frame +
-          target_playout_delay);
-  FeedOneFrameIntoReceiver();
-  task_runner_->RunTasks();
-  EXPECT_EQ(3, fake_audio_client_.number_times_called());
-
-  // Move forward to the playout time of an unreceived Frame 5.  Expect no
-  // additional frames were emitted.
-  testing_clock_->Advance(3 * time_advance_per_frame);
-  task_runner_->RunTasks();
-  EXPECT_EQ(3, fake_audio_client_.number_times_called());
-}
-
-}  // namespace cast
-}  // namespace media