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Add loss-based BWE estimate to the outgoing bitrate plot.

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Review-Url: https://codereview.webrtc.org/2165523002
Cr-Commit-Position: refs/heads/master@{#13517}
This commit is contained in:
terelius
2016-07-25 01:32:41 -07:00
committed by Commit bot
parent 1c88e8c656
commit 8058e58d8f
2 changed files with 30 additions and 0 deletions
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20
webrtc/tools/event_log_visualizer/analyzer.cc
View File

@ -204,6 +204,12 @@ EventLogAnalyzer::EventLogAnalyzer(const ParsedRtcEventLog& log)
break;
}
case ParsedRtcEventLog::BWE_PACKET_LOSS_EVENT: {
BwePacketLossEvent bwe_update;
bwe_update.timestamp = parsed_log_.GetTimestamp(i);
parsed_log_.GetBwePacketLossEvent(i, &bwe_update.new_bitrate,
&bwe_update.fraction_loss,
&bwe_update.expected_packets);
bwe_loss_updates_.push_back(bwe_update);
break;
}
case ParsedRtcEventLog::BWE_PACKET_DELAY_EVENT: {
@ -557,6 +563,20 @@ void EventLogAnalyzer::CreateTotalBitrateGraph(
}
plot->series.back().style = LINE_GRAPH;
// Overlay the send-side bandwidth estimate over the outgoing bitrate.
if (desired_direction == kOutgoingPacket) {
plot->series.push_back(TimeSeries());
for (auto& bwe_update : bwe_loss_updates_) {
float x =
static_cast<float>(bwe_update.timestamp - begin_time_) / 1000000;
float y = static_cast<float>(bwe_update.new_bitrate) / 1000;
max_y = std::max(max_y, y);
plot->series.back().points.emplace_back(x, y);
}
plot->series.back().label = "Loss-based estimate";
plot->series.back().style = LINE_GRAPH;
}
plot->xaxis_min = kDefaultXMin;
plot->xaxis_max = (end_time_ - begin_time_) / 1000000 * kXMargin;
plot->xaxis_label = "Time (s)";

10
webrtc/tools/event_log_visualizer/analyzer.h
View File

@ -67,6 +67,13 @@ class EventLogAnalyzer {
RTPHeader header;
};
struct BwePacketLossEvent {
uint64_t timestamp;
int32_t new_bitrate;
uint8_t fraction_loss;
int32_t expected_packets;
};
const ParsedRtcEventLog& parsed_log_;
// A list of SSRCs we are interested in analysing.
@ -78,6 +85,9 @@ class EventLogAnalyzer {
// if the stream has been configured.
std::map<StreamId, std::vector<LoggedRtpPacket>> rtp_packets_;
// A list of all updates from the send-side loss-based bandwidth estimator.
std::vector<BwePacketLossEvent> bwe_loss_updates_;
// Window and step size used for calculating moving averages, e.g. bitrate.
// The generated data points will be |step_| microseconds apart.
// Only events occuring at most |window_duration_| microseconds before the