1 /*
2  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef CALL_RAMPUP_TESTS_H_
12 #define CALL_RAMPUP_TESTS_H_
13 
14 #include <map>
15 #include <string>
16 #include <vector>
17 
18 #include "call/call.h"
19 #include "logging/rtc_event_log/rtc_event_log.h"
20 #include "rtc_base/event.h"
21 #include "test/call_test.h"
22 
23 namespace webrtc {
24 
25 static const int kTransmissionTimeOffsetExtensionId = 6;
26 static const int kAbsSendTimeExtensionId = 7;
27 static const int kTransportSequenceNumberExtensionId = 8;
28 static const unsigned int kSingleStreamTargetBps = 1000000;
29 
30 class Clock;
31 
32 class RampUpTester : public test::EndToEndTest {
33  public:
34   RampUpTester(size_t num_video_streams,
35                size_t num_audio_streams,
36                size_t num_flexfec_streams,
37                unsigned int start_bitrate_bps,
38                int64_t min_run_time_ms,
39                const std::string& extension_type,
40                bool rtx,
41                bool red,
42                bool report_perf_stats);
43   ~RampUpTester() override;
44 
45   size_t GetNumVideoStreams() const override;
46   size_t GetNumAudioStreams() const override;
47   size_t GetNumFlexfecStreams() const override;
48 
49   void PerformTest() override;
50 
51  protected:
52   virtual void PollStats();
53 
54   void AccumulateStats(const VideoSendStream::StreamStats& stream,
55                        size_t* total_packets_sent,
56                        size_t* total_sent,
57                        size_t* padding_sent,
58                        size_t* media_sent) const;
59 
60   void ReportResult(const std::string& measurement,
61                     size_t value,
62                     const std::string& units) const;
63   void TriggerTestDone();
64 
65   webrtc::RtcEventLogNullImpl event_log_;
66   rtc::Event stop_event_;
67   Clock* const clock_;
68   FakeNetworkPipe::Config forward_transport_config_;
69   const size_t num_video_streams_;
70   const size_t num_audio_streams_;
71   const size_t num_flexfec_streams_;
72   const bool rtx_;
73   const bool red_;
74   const bool report_perf_stats_;
75   Call* sender_call_;
76   VideoSendStream* send_stream_;
77   test::PacketTransport* send_transport_;
78 
79  private:
80   typedef std::map<uint32_t, uint32_t> SsrcMap;
81   class VideoStreamFactory;
82 
83   Call::Config GetSenderCallConfig() override;
84   void OnVideoStreamsCreated(
85       VideoSendStream* send_stream,
86       const std::vector<VideoReceiveStream*>& receive_streams) override;
87   test::PacketTransport* CreateSendTransport(
88       test::SingleThreadedTaskQueueForTesting* task_queue,
89       Call* sender_call) override;
90   void ModifyVideoConfigs(
91       VideoSendStream::Config* send_config,
92       std::vector<VideoReceiveStream::Config>* receive_configs,
93       VideoEncoderConfig* encoder_config) override;
94   void ModifyAudioConfigs(
95       AudioSendStream::Config* send_config,
96       std::vector<AudioReceiveStream::Config>* receive_configs) override;
97   void ModifyFlexfecConfigs(
98       std::vector<FlexfecReceiveStream::Config>* receive_configs) override;
99   void OnCallsCreated(Call* sender_call, Call* receiver_call) override;
100 
101   static void BitrateStatsPollingThread(void* obj);
102 
103   const int start_bitrate_bps_;
104   const int64_t min_run_time_ms_;
105   int expected_bitrate_bps_;
106   int64_t test_start_ms_;
107   int64_t ramp_up_finished_ms_;
108 
109   const std::string extension_type_;
110   std::vector<uint32_t> video_ssrcs_;
111   std::vector<uint32_t> video_rtx_ssrcs_;
112   std::vector<uint32_t> audio_ssrcs_;
113 
114   rtc::PlatformThread poller_thread_;
115 };
116 
117 class RampUpDownUpTester : public RampUpTester {
118  public:
119   RampUpDownUpTester(size_t num_video_streams,
120                      size_t num_audio_streams,
121                      size_t num_flexfec_streams,
122                      unsigned int start_bitrate_bps,
123                      const std::string& extension_type,
124                      bool rtx,
125                      bool red,
126                      const std::vector<int>& loss_rates,
127                      bool report_perf_stats);
128   ~RampUpDownUpTester() override;
129 
130  protected:
131   void PollStats() override;
132 
133  private:
134   enum TestStates {
135     kFirstRampup = 0,
136     kLowRate,
137     kSecondRampup,
138     kTestEnd,
139     kTransitionToNextState,
140   };
141 
142   Call::Config GetReceiverCallConfig() override;
143 
144   std::string GetModifierString() const;
145   int GetExpectedHighBitrate() const;
146   int GetHighLinkCapacity() const;
147   size_t GetFecBytes() const;
148   bool ExpectingFec() const;
149   void EvolveTestState(int bitrate_bps, bool suspended);
150 
151   const std::vector<int> link_rates_;
152   TestStates test_state_;
153   TestStates next_state_;
154   int64_t state_start_ms_;
155   int64_t interval_start_ms_;
156   int sent_bytes_;
157   std::vector<int> loss_rates_;
158 };
159 }  // namespace webrtc
160 #endif  // CALL_RAMPUP_TESTS_H_
161