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 WEBRTC_CALL_RAMPUP_TESTS_H_
12 #define WEBRTC_CALL_RAMPUP_TESTS_H_
13 
14 #include <map>
15 #include <string>
16 #include <vector>
17 
18 #include "webrtc/base/event.h"
19 #include "webrtc/call/call.h"
20 #include "webrtc/logging/rtc_event_log/rtc_event_log.h"
21 #include "webrtc/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                unsigned int start_bitrate_bps,
37                const std::string& extension_type,
38                bool rtx,
39                bool red);
40   ~RampUpTester() override;
41 
42   size_t GetNumVideoStreams() const override;
43   size_t GetNumAudioStreams() const override;
44 
45   void PerformTest() override;
46 
47  protected:
48   virtual bool PollStats();
49 
50   void AccumulateStats(const VideoSendStream::StreamStats& stream,
51                        size_t* total_packets_sent,
52                        size_t* total_sent,
53                        size_t* padding_sent,
54                        size_t* media_sent) const;
55 
56   void ReportResult(const std::string& measurement,
57                     size_t value,
58                     const std::string& units) const;
59   void TriggerTestDone();
60 
61   webrtc::RtcEventLogNullImpl event_log_;
62   rtc::Event event_;
63   Clock* const clock_;
64   FakeNetworkPipe::Config forward_transport_config_;
65   const size_t num_video_streams_;
66   const size_t num_audio_streams_;
67   const bool rtx_;
68   const bool red_;
69   Call* sender_call_;
70   VideoSendStream* send_stream_;
71   test::PacketTransport* send_transport_;
72 
73  private:
74   typedef std::map<uint32_t, uint32_t> SsrcMap;
75   class VideoStreamFactory;
76 
77   Call::Config GetSenderCallConfig() override;
78   void OnVideoStreamsCreated(
79       VideoSendStream* send_stream,
80       const std::vector<VideoReceiveStream*>& receive_streams) override;
81   test::PacketTransport* CreateSendTransport(Call* sender_call) override;
82   void ModifyVideoConfigs(
83       VideoSendStream::Config* send_config,
84       std::vector<VideoReceiveStream::Config>* receive_configs,
85       VideoEncoderConfig* encoder_config) override;
86   void ModifyAudioConfigs(
87       AudioSendStream::Config* send_config,
88       std::vector<AudioReceiveStream::Config>* receive_configs) override;
89   void OnCallsCreated(Call* sender_call, Call* receiver_call) override;
90 
91   static bool BitrateStatsPollingThread(void* obj);
92 
93   const int start_bitrate_bps_;
94   bool start_bitrate_verified_;
95   int expected_bitrate_bps_;
96   int64_t test_start_ms_;
97   int64_t ramp_up_finished_ms_;
98 
99   const std::string extension_type_;
100   std::vector<uint32_t> video_ssrcs_;
101   std::vector<uint32_t> video_rtx_ssrcs_;
102   std::vector<uint32_t> audio_ssrcs_;
103 
104   rtc::PlatformThread poller_thread_;
105 };
106 
107 class RampUpDownUpTester : public RampUpTester {
108  public:
109   RampUpDownUpTester(size_t num_video_streams,
110                      size_t num_audio_streams,
111                      unsigned int start_bitrate_bps,
112                      const std::string& extension_type,
113                      bool rtx,
114                      bool red);
115   ~RampUpDownUpTester() override;
116 
117  protected:
118   bool PollStats() override;
119 
120  private:
121   enum TestStates { kFirstRampup, kLowRate, kSecondRampup };
122 
123   Call::Config GetReceiverCallConfig() override;
124 
125   std::string GetModifierString() const;
126   int GetExpectedHighBitrate() const;
127   int GetHighLinkCapacity() const;
128   void EvolveTestState(int bitrate_bps, bool suspended);
129 
130   TestStates test_state_;
131   int64_t state_start_ms_;
132   int64_t interval_start_ms_;
133   int sent_bytes_;
134 };
135 }  // namespace webrtc
136 #endif  // WEBRTC_CALL_RAMPUP_TESTS_H_
137