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
|
// Copyright 2015 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 "remoting/protocol/audio_pump.h"
#include <stddef.h>
#include <memory>
#include <utility>
#include <vector>
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "remoting/codec/audio_encoder.h"
#include "remoting/proto/audio.pb.h"
#include "remoting/protocol/audio_source.h"
#include "remoting/protocol/audio_stub.h"
#include "remoting/protocol/fake_audio_source.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
namespace protocol {
namespace {
// Creates a dummy packet with 1k data
std::unique_ptr<AudioPacket> MakeAudioPacket() {
std::unique_ptr<AudioPacket> packet(new AudioPacket);
packet->add_data()->resize(1000);
return packet;
}
} // namespace
class FakeAudioEncoder : public AudioEncoder {
public:
FakeAudioEncoder() {}
~FakeAudioEncoder() override {}
std::unique_ptr<AudioPacket> Encode(
std::unique_ptr<AudioPacket> packet) override {
return packet;
}
int GetBitrate() override { return 160000; }
private:
DISALLOW_COPY_AND_ASSIGN(FakeAudioEncoder);
};
class AudioPumpTest : public testing::Test, public protocol::AudioStub {
public:
AudioPumpTest() {}
void SetUp() override;
void TearDown() override;
// protocol::AudioStub interface.
void ProcessAudioPacket(std::unique_ptr<AudioPacket> audio_packet,
const base::Closure& done) override;
protected:
base::MessageLoop message_loop_;
// |source_| and |encoder_| are owned by the |pump_|.
FakeAudioSource* source_;
FakeAudioEncoder* encoder_;
std::unique_ptr<AudioPump> pump_;
std::vector<std::unique_ptr<AudioPacket>> sent_packets_;
std::vector<base::Closure> done_closures_;
private:
DISALLOW_COPY_AND_ASSIGN(AudioPumpTest);
};
void AudioPumpTest::SetUp() {
source_ = new FakeAudioSource();
encoder_ = new FakeAudioEncoder();
pump_.reset(new AudioPump(message_loop_.task_runner(),
base::WrapUnique(source_),
base::WrapUnique(encoder_), this));
}
void AudioPumpTest::TearDown() {
pump_.reset();
// Let the message loop run to finish destroying the capturer.
base::RunLoop().RunUntilIdle();
}
void AudioPumpTest::ProcessAudioPacket(
std::unique_ptr<AudioPacket> audio_packet,
const base::Closure& done) {
sent_packets_.push_back(std::move(audio_packet));
done_closures_.push_back(done);
}
// Verify that the pump pauses pumping when the network is congested.
TEST_F(AudioPumpTest, BufferSizeLimit) {
// Run message loop to let the pump start the capturer.
base::RunLoop().RunUntilIdle();
ASSERT_FALSE(source_->callback().is_null());
// Try sending 100 packets, 1k each. The pump should stop pumping and start
// dropping the data at some point.
for (size_t i = 0; i < 100; ++i) {
source_->callback().Run(MakeAudioPacket());
base::RunLoop().RunUntilIdle();
}
size_t num_sent_packets = sent_packets_.size();
EXPECT_LT(num_sent_packets, 100U);
EXPECT_GT(num_sent_packets, 0U);
// Call done closure for the first packet. This should allow one more packet
// to be sent below.
done_closures_.front().Run();
base::RunLoop().RunUntilIdle();
// Verify that the pump continues to send captured audio.
source_->callback().Run(MakeAudioPacket());
base::RunLoop().RunUntilIdle();
EXPECT_EQ(num_sent_packets + 1, sent_packets_.size());
}
} // namespace protocol
} // namespace remoting
|
