mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-17 15:47:53 +01:00
c39f462b2d
Originally RtcEventProbeClusterCreated was logged in bitrate prober. This means that anyone who was using GoogCcNetworkControl wasn't logging it, and the NetworkControl wasn't self-contained. This changes moves the responsibility for logging ProbeClusterCreated to ProbeController (where the probe is created), it also moves the responsibility for assigning probe ids to the probe controller. Bug: None Change-Id: If0433cc6d311b5483ea3980749b03ddbcd2bf041 Reviewed-on: https://webrtc-review.googlesource.com/c/122927 Commit-Queue: Peter Slatala <psla@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Björn Terelius <terelius@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26713}
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
/*
|
|
* Copyright (c) 2014 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.
|
|
*/
|
|
|
|
#ifndef MODULES_PACING_BITRATE_PROBER_H_
|
|
#define MODULES_PACING_BITRATE_PROBER_H_
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <queue>
|
|
|
|
#include "api/transport/network_types.h"
|
|
|
|
namespace webrtc {
|
|
class RtcEventLog;
|
|
|
|
// Note that this class isn't thread-safe by itself and therefore relies
|
|
// on being protected by the caller.
|
|
class BitrateProber {
|
|
public:
|
|
BitrateProber();
|
|
explicit BitrateProber(RtcEventLog* event_log);
|
|
~BitrateProber();
|
|
|
|
void SetEnabled(bool enable);
|
|
|
|
// Returns true if the prober is in a probing session, i.e., it currently
|
|
// wants packets to be sent out according to the time returned by
|
|
// TimeUntilNextProbe().
|
|
bool IsProbing() const;
|
|
|
|
// Initializes a new probing session if the prober is allowed to probe. Does
|
|
// not initialize the prober unless the packet size is large enough to probe
|
|
// with.
|
|
void OnIncomingPacket(size_t packet_size);
|
|
|
|
// Create a cluster used to probe for |bitrate_bps| with |num_probes| number
|
|
// of probes.
|
|
void CreateProbeCluster(int bitrate_bps, int64_t now_ms, int cluster_id);
|
|
|
|
// Returns the number of milliseconds until the next probe should be sent to
|
|
// get accurate probing.
|
|
int TimeUntilNextProbe(int64_t now_ms);
|
|
|
|
// Information about the current probing cluster.
|
|
PacedPacketInfo CurrentCluster() const;
|
|
|
|
// Returns the minimum number of bytes that the prober recommends for
|
|
// the next probe.
|
|
size_t RecommendedMinProbeSize() const;
|
|
|
|
// Called to report to the prober that a probe has been sent. In case of
|
|
// multiple packets per probe, this call would be made at the end of sending
|
|
// the last packet in probe. |probe_size| is the total size of all packets
|
|
// in probe.
|
|
void ProbeSent(int64_t now_ms, size_t probe_size);
|
|
|
|
private:
|
|
enum class ProbingState {
|
|
// Probing will not be triggered in this state at all times.
|
|
kDisabled,
|
|
// Probing is enabled and ready to trigger on the first packet arrival.
|
|
kInactive,
|
|
// Probe cluster is filled with the set of data rates to be probed and
|
|
// probes are being sent.
|
|
kActive,
|
|
// Probing is enabled, but currently suspended until an explicit trigger
|
|
// to start probing again.
|
|
kSuspended,
|
|
};
|
|
|
|
// A probe cluster consists of a set of probes. Each probe in turn can be
|
|
// divided into a number of packets to accommodate the MTU on the network.
|
|
struct ProbeCluster {
|
|
PacedPacketInfo pace_info;
|
|
|
|
int sent_probes = 0;
|
|
int sent_bytes = 0;
|
|
int64_t time_created_ms = -1;
|
|
int64_t time_started_ms = -1;
|
|
int retries = 0;
|
|
};
|
|
|
|
int64_t GetNextProbeTime(const ProbeCluster& cluster);
|
|
|
|
ProbingState probing_state_;
|
|
|
|
// Probe bitrate per packet. These are used to compute the delta relative to
|
|
// the previous probe packet based on the size and time when that packet was
|
|
// sent.
|
|
std::queue<ProbeCluster> clusters_;
|
|
|
|
// Time the next probe should be sent when in kActive state.
|
|
int64_t next_probe_time_ms_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_PACING_BITRATE_PROBER_H_
|