blob: f3faf518abf64fda28969320e62695ba45466947 [file] [log] [blame]
* Copyright (c) 2016 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 <map>
#include <memory>
#include <vector>
#include "webrtc/base/constructormagic.h"
#include "webrtc/base/protobuf_utils.h"
#include "webrtc/modules/audio_coding/audio_network_adaptor/controller.h"
namespace webrtc {
class ControllerManager {
virtual ~ControllerManager() = default;
// Sort controllers based on their significance.
virtual std::vector<Controller*> GetSortedControllers(
const Controller::NetworkMetrics& metrics) = 0;
virtual std::vector<Controller*> GetControllers() const = 0;
class ControllerManagerImpl final : public ControllerManager {
struct Config {
Config(int min_reordering_time_ms, float min_reordering_squared_distance);
// Least time since last reordering for a new reordering to be made.
int min_reordering_time_ms;
// Least squared distance from last scoring point for a new reordering to be
// made.
float min_reordering_squared_distance;
static std::unique_ptr<ControllerManager> Create(
const ProtoString& config_string,
size_t num_encoder_channels,
rtc::ArrayView<const int> encoder_frame_lengths_ms,
int min_encoder_bitrate_bps,
size_t intial_channels_to_encode,
int initial_frame_length_ms,
int initial_bitrate_bps,
bool initial_fec_enabled,
bool initial_dtx_enabled);
explicit ControllerManagerImpl(const Config& config);
// Dependency injection for testing.
const Config& config,
std::vector<std::unique_ptr<Controller>>&& controllers,
const std::map<const Controller*, std::pair<int, float>>&
~ControllerManagerImpl() override;
// Sort controllers based on their significance.
std::vector<Controller*> GetSortedControllers(
const Controller::NetworkMetrics& metrics) override;
std::vector<Controller*> GetControllers() const override;
// Scoring point is a subset of NetworkMetrics that is used for comparing the
// significance of controllers.
struct ScoringPoint {
// TODO(eladalon): Do we want to experiment with RPLR-based scoring?
ScoringPoint(int uplink_bandwidth_bps, float uplink_packet_loss_fraction);
// Calculate the normalized [0,1] distance between two scoring points.
float SquaredDistanceTo(const ScoringPoint& scoring_point) const;
int uplink_bandwidth_bps;
float uplink_packet_loss_fraction;
const Config config_;
std::vector<std::unique_ptr<Controller>> controllers_;
rtc::Optional<int64_t> last_reordering_time_ms_;
ScoringPoint last_scoring_point_;
std::vector<Controller*> default_sorted_controllers_;
std::vector<Controller*> sorted_controllers_;
// |scoring_points_| saves the scoring points of various
// controllers.
std::map<const Controller*, ScoringPoint> controller_scoring_points_;
} // namespace webrtc