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
184
185
186
187
188
189
190
|
/*
* Copyright 2019 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 "test/scenario/stats_collection.h"
#include "common_video/libyuv/include/webrtc_libyuv.h"
#include "rtc_base/memory_usage.h"
#include "rtc_base/thread.h"
namespace webrtc {
namespace test {
VideoQualityAnalyzer::VideoQualityAnalyzer(
VideoQualityAnalyzerConfig config,
std::unique_ptr<RtcEventLogOutput> writer)
: config_(config), writer_(std::move(writer)) {
if (writer_) {
PrintHeaders();
}
}
VideoQualityAnalyzer::~VideoQualityAnalyzer() = default;
void VideoQualityAnalyzer::PrintHeaders() {
writer_->Write(
"capture_time render_time capture_width capture_height render_width "
"render_height psnr\n");
}
std::function<void(const VideoFramePair&)> VideoQualityAnalyzer::Handler() {
return [this](VideoFramePair pair) { HandleFramePair(pair); };
}
void VideoQualityAnalyzer::HandleFramePair(VideoFramePair sample, double psnr) {
layer_analyzers_[sample.layer_id].HandleFramePair(sample, psnr,
writer_.get());
cached_.reset();
}
void VideoQualityAnalyzer::HandleFramePair(VideoFramePair sample) {
double psnr = NAN;
if (sample.decoded)
psnr = I420PSNR(*sample.captured->ToI420(), *sample.decoded->ToI420());
if (config_.thread) {
config_.thread->PostTask(
[this, sample, psnr] { HandleFramePair(std::move(sample), psnr); });
} else {
HandleFramePair(std::move(sample), psnr);
}
}
std::vector<VideoQualityStats> VideoQualityAnalyzer::layer_stats() const {
std::vector<VideoQualityStats> res;
for (auto& layer : layer_analyzers_)
res.push_back(layer.second.stats_);
return res;
}
VideoQualityStats& VideoQualityAnalyzer::stats() {
if (!cached_) {
cached_ = VideoQualityStats();
for (auto& layer : layer_analyzers_)
cached_->AddStats(layer.second.stats_);
}
return *cached_;
}
void VideoLayerAnalyzer::HandleFramePair(VideoFramePair sample,
double psnr,
RtcEventLogOutput* writer) {
RTC_CHECK(sample.captured);
HandleCapturedFrame(sample);
if (!sample.decoded) {
// Can only happen in the beginning of a call or if the resolution is
// reduced. Otherwise we will detect a freeze.
++stats_.lost_count;
++skip_count_;
} else {
stats_.psnr_with_freeze.AddSample(psnr);
if (sample.repeated) {
++stats_.freeze_count;
++skip_count_;
} else {
stats_.psnr.AddSample(psnr);
HandleRenderedFrame(sample);
}
}
if (writer) {
LogWriteFormat(writer, "%.3f %.3f %.3f %i %i %i %i %.3f\n",
sample.capture_time.seconds<double>(),
sample.render_time.seconds<double>(),
sample.captured->width(), sample.captured->height(),
sample.decoded ? sample.decoded->width() : 0,
sample.decoded ? sample.decoded->height() : 0, psnr);
}
}
void VideoLayerAnalyzer::HandleCapturedFrame(const VideoFramePair& sample) {
stats_.capture.AddFrameInfo(*sample.captured, sample.capture_time);
if (last_freeze_time_.IsInfinite())
last_freeze_time_ = sample.capture_time;
}
void VideoLayerAnalyzer::HandleRenderedFrame(const VideoFramePair& sample) {
stats_.capture_to_decoded_delay.AddSample(sample.decoded_time -
sample.capture_time);
stats_.end_to_end_delay.AddSample(sample.render_time - sample.capture_time);
stats_.render.AddFrameInfo(*sample.decoded, sample.render_time);
stats_.skipped_between_rendered.AddSample(skip_count_);
skip_count_ = 0;
if (last_render_time_.IsFinite()) {
RTC_DCHECK(sample.render_time.IsFinite());
TimeDelta render_interval = sample.render_time - last_render_time_;
TimeDelta mean_interval = stats_.render.frames.interval().Mean();
if (render_interval > TimeDelta::Millis(150) + mean_interval ||
render_interval > 3 * mean_interval) {
stats_.freeze_duration.AddSample(render_interval);
stats_.time_between_freezes.AddSample(last_render_time_ -
last_freeze_time_);
last_freeze_time_ = sample.render_time;
}
}
last_render_time_ = sample.render_time;
}
void CallStatsCollector::AddStats(Call::Stats sample) {
if (sample.send_bandwidth_bps > 0)
stats_.target_rate.AddSampleBps(sample.send_bandwidth_bps);
if (sample.pacer_delay_ms > 0)
stats_.pacer_delay.AddSample(TimeDelta::Millis(sample.pacer_delay_ms));
if (sample.rtt_ms > 0)
stats_.round_trip_time.AddSample(TimeDelta::Millis(sample.rtt_ms));
stats_.memory_usage.AddSample(rtc::GetProcessResidentSizeBytes());
}
void AudioReceiveStatsCollector::AddStats(
AudioReceiveStreamInterface::Stats sample) {
stats_.expand_rate.AddSample(sample.expand_rate);
stats_.accelerate_rate.AddSample(sample.accelerate_rate);
stats_.jitter_buffer.AddSampleMs(sample.jitter_buffer_ms);
}
void VideoSendStatsCollector::AddStats(VideoSendStream::Stats sample,
Timestamp at_time) {
// It's not certain that we yet have estimates for any of these stats.
// Check that they are positive before mixing them in.
if (sample.encode_frame_rate <= 0)
return;
stats_.encode_frame_rate.AddSample(sample.encode_frame_rate);
stats_.encode_time.AddSampleMs(sample.avg_encode_time_ms);
stats_.encode_usage.AddSample(sample.encode_usage_percent / 100.0);
stats_.media_bitrate.AddSampleBps(sample.media_bitrate_bps);
size_t fec_bytes = 0;
for (const auto& kv : sample.substreams) {
fec_bytes += kv.second.rtp_stats.fec.payload_bytes +
kv.second.rtp_stats.fec.padding_bytes;
}
if (last_update_.IsFinite()) {
auto fec_delta = DataSize::Bytes(fec_bytes - last_fec_bytes_);
auto time_delta = at_time - last_update_;
stats_.fec_bitrate.AddSample(fec_delta / time_delta);
}
last_fec_bytes_ = fec_bytes;
last_update_ = at_time;
}
void VideoReceiveStatsCollector::AddStats(
VideoReceiveStreamInterface::Stats sample) {
if (sample.decode_ms > 0)
stats_.decode_time.AddSampleMs(sample.decode_ms);
if (sample.max_decode_ms > 0)
stats_.decode_time_max.AddSampleMs(sample.max_decode_ms);
if (sample.width > 0 && sample.height > 0) {
stats_.decode_pixels.AddSample(sample.width * sample.height);
stats_.resolution.AddSample(sample.height);
}
}
} // namespace test
} // namespace webrtc
|
