1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Copyright 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <string>
#include "call/test/mock_bitrate_allocator.h"
#include "call/test/mock_rtp_transport_controller_send.h"
#include "logging/rtc_event_log/rtc_event_log.h"
#include "modules/video_coding/fec_controller_default.h"
#include "rtc_base/experiments/alr_experiment.h"
#include "rtc_base/task_queue_for_test.h"
#include "test/field_trial.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/mock_transport.h"
#include "video/test/mock_video_stream_encoder.h"
#include "video/video_send_stream_impl.h"
namespace webrtc {
namespace internal {
namespace {
using testing::NiceMock;
using testing::StrictMock;
using testing::ReturnRef;
using testing::Return;
using testing::Invoke;
using testing::_;
constexpr int64_t kDefaultInitialBitrateBps = 333000;
const double kDefaultBitratePriority = 0.5;
const float kAlrProbingExperimentPaceMultiplier = 1.0f;
std::string GetAlrProbingExperimentString() {
return std::string(
AlrExperimentSettings::kScreenshareProbingBweExperimentName) +
"/1.0,2875,80,40,-60,3/";
}
} // namespace
class VideoSendStreamImplTest : public ::testing::Test {
protected:
VideoSendStreamImplTest()
: clock_(1000 * 1000 * 1000),
config_(&transport_),
send_delay_stats_(&clock_),
retransmission_limiter_(&clock_, 1000),
test_queue_("test_queue"),
process_thread_(ProcessThread::Create("test_thread")),
call_stats_(&clock_, process_thread_.get()),
stats_proxy_(&clock_,
config_,
VideoEncoderConfig::ContentType::kRealtimeVideo) {
config_.rtp.ssrcs.push_back(8080);
config_.rtp.payload_type = 1;
EXPECT_CALL(transport_controller_, keepalive_config())
.WillRepeatedly(ReturnRef(keepalive_config_));
EXPECT_CALL(transport_controller_, packet_router())
.WillRepeatedly(Return(&packet_router_));
}
~VideoSendStreamImplTest() {}
std::unique_ptr<VideoSendStreamImpl> CreateVideoSendStreamImpl(
int initial_encoder_max_bitrate,
double initial_encoder_bitrate_priority,
VideoEncoderConfig::ContentType content_type) {
EXPECT_CALL(bitrate_allocator_, GetStartBitrate(_))
.WillOnce(Return(123000));
std::map<uint32_t, RtpState> suspended_ssrcs;
std::map<uint32_t, RtpPayloadState> suspended_payload_states;
return rtc::MakeUnique<VideoSendStreamImpl>(
&stats_proxy_, &test_queue_, &call_stats_, &transport_controller_,
&bitrate_allocator_, &send_delay_stats_, &video_stream_encoder_,
&event_log_, &config_, initial_encoder_max_bitrate,
initial_encoder_bitrate_priority, suspended_ssrcs,
suspended_payload_states, content_type,
rtc::MakeUnique<FecControllerDefault>(&clock_),
&retransmission_limiter_);
}
protected:
NiceMock<MockTransport> transport_;
NiceMock<MockRtpTransportControllerSend> transport_controller_;
NiceMock<MockBitrateAllocator> bitrate_allocator_;
NiceMock<MockVideoStreamEncoder> video_stream_encoder_;
SimulatedClock clock_;
RtcEventLogNullImpl event_log_;
VideoSendStream::Config config_;
SendDelayStats send_delay_stats_;
RateLimiter retransmission_limiter_;
rtc::test::TaskQueueForTest test_queue_;
std::unique_ptr<ProcessThread> process_thread_;
CallStats call_stats_;
SendStatisticsProxy stats_proxy_;
PacketRouter packet_router_;
RtpKeepAliveConfig keepalive_config_;
};
TEST_F(VideoSendStreamImplTest, RegistersAsBitrateObserverOnStart) {
test_queue_.SendTask([this] {
config_.track_id = "test";
const bool kSuspend = false;
config_.suspend_below_min_bitrate = kSuspend;
auto vss_impl = CreateVideoSendStreamImpl(
kDefaultInitialBitrateBps, kDefaultBitratePriority,
VideoEncoderConfig::ContentType::kRealtimeVideo);
EXPECT_CALL(bitrate_allocator_, AddObserver(vss_impl.get(), _))
.WillOnce(Invoke(
[&](BitrateAllocatorObserver*, MediaStreamAllocationConfig config) {
EXPECT_EQ(config.min_bitrate_bps, 0u);
EXPECT_EQ(config.max_bitrate_bps, kDefaultInitialBitrateBps);
EXPECT_EQ(config.pad_up_bitrate_bps, 0u);
EXPECT_EQ(config.enforce_min_bitrate, !kSuspend);
EXPECT_EQ(config.track_id, "test");
EXPECT_EQ(config.bitrate_priority, kDefaultBitratePriority);
EXPECT_EQ(config.has_packet_feedback, false);
}));
vss_impl->Start();
EXPECT_CALL(bitrate_allocator_, RemoveObserver(vss_impl.get())).Times(1);
vss_impl->Stop();
});
}
TEST_F(VideoSendStreamImplTest, ReportFeedbackAvailability) {
test_queue_.SendTask([this] {
config_.rtp.extensions.emplace_back(
RtpExtension::kTransportSequenceNumberUri,
RtpExtension::kTransportSequenceNumberDefaultId);
auto vss_impl = CreateVideoSendStreamImpl(
kDefaultInitialBitrateBps, kDefaultBitratePriority,
VideoEncoderConfig::ContentType::kRealtimeVideo);
EXPECT_CALL(bitrate_allocator_, AddObserver(vss_impl.get(), _))
.WillOnce(Invoke(
[&](BitrateAllocatorObserver*, MediaStreamAllocationConfig config) {
EXPECT_EQ(config.has_packet_feedback, true);
}));
vss_impl->Start();
EXPECT_CALL(bitrate_allocator_, RemoveObserver(vss_impl.get())).Times(1);
vss_impl->Stop();
});
}
TEST_F(VideoSendStreamImplTest, SetsScreensharePacingFactorWithFeedback) {
test::ScopedFieldTrials alr_experiment(GetAlrProbingExperimentString());
test_queue_.SendTask([this] {
config_.rtp.extensions.emplace_back(
RtpExtension::kTransportSequenceNumberUri,
RtpExtension::kTransportSequenceNumberDefaultId);
EXPECT_CALL(transport_controller_,
SetPacingFactor(kAlrProbingExperimentPaceMultiplier))
.Times(1);
auto vss_impl = CreateVideoSendStreamImpl(
kDefaultInitialBitrateBps, kDefaultBitratePriority,
VideoEncoderConfig::ContentType::kScreen);
vss_impl->Start();
vss_impl->Stop();
});
}
TEST_F(VideoSendStreamImplTest, DoesNotSetPacingFactorWithoutFeedback) {
test::ScopedFieldTrials alr_experiment(GetAlrProbingExperimentString());
test_queue_.SendTask([this] {
EXPECT_CALL(transport_controller_, SetPacingFactor(_)).Times(0);
auto vss_impl = CreateVideoSendStreamImpl(
kDefaultInitialBitrateBps, kDefaultBitratePriority,
VideoEncoderConfig::ContentType::kScreen);
vss_impl->Start();
vss_impl->Stop();
});
}
} // namespace internal
} // namespace webrtc
|
