package webrtc.audio_network_adaptor.config

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Used in: Controller

• optional int32 fl_increase_overhead_offset = 1

  Offset to apply to per-packet overhead when the frame length is increased.

• optional int32 fl_decrease_overhead_offset = 2

  Offset to apply to per-packet overhead when the frame length is decreased.

Used in: Controller

• optional int32 channel_1_to_2_bandwidth_bps = 1

  Uplink bandwidth above which the number of encoded channels should switch from 1 to 2.

• optional int32 channel_2_to_1_bandwidth_bps = 2

  Uplink bandwidth below which the number of encoded channels should switch from 2 to 1.

Used in: ControllerManager

• optional Controller.ScoringPoint scoring_point = 1

  The distance from |scoring_point| to a given network condition defines the significance of this controller with respect that network condition. Shorter distance means higher significance. The significances of controllers determine their order in the processing pipeline. Controllers without |scoring_point| follow their default order in |ControllerManager::controllers|.

• oneof controller

  • FecController fec_controller = 21

  • FrameLengthController frame_length_controller = 22

  • ChannelController channel_controller = 23

  • DtxController dtx_controller = 24

  • BitrateController bitrate_controller = 25

  • FecControllerRplrBased fec_controller_rplr_based = 26

  • FrameLengthControllerV2 frame_length_controller_v2 = 27

Used in: Controller

• optional int32 uplink_bandwidth_bps = 1

  |ScoringPoint| is a subspace of network condition. It is used for comparing the significance of controllers.

• optional float uplink_packet_loss_fraction = 2

Used in: debug_dump.Event

• repeated Controller controllers = 1

• optional int32 min_reordering_time_ms = 2

  Least time since last reordering for a new reordering to be made.

• optional float min_reordering_squared_distance = 3

  Least squared distance from last scoring point for a new reordering to be made.

Used in: Controller

• optional int32 dtx_enabling_bandwidth_bps = 1

  Uplink bandwidth below which DTX should be switched on.

• optional int32 dtx_disabling_bandwidth_bps = 2

  Uplink bandwidth above which DTX should be switched off.

Used in: Controller

• optional FecController.Threshold fec_enabling_threshold = 1

  |fec_enabling_threshold| defines a curve, above which FEC should be enabled. |fec_disabling_threshold| defines a curve, under which FEC should be disabled. See below packet-loss ^ | | | | | FEC | \ \ ON | FEC \ \_______ fec_enabling_threshold | OFF \_________ fec_disabling_threshold |-----------------> bandwidth

• optional FecController.Threshold fec_disabling_threshold = 2

• optional int32 time_constant_ms = 3

  |time_constant_ms| is the time constant for an exponential filter, which is used for smoothing the packet loss fraction.

Used in: FecController

• optional int32 low_bandwidth_bps = 1

  Threshold defines a curve in the bandwidth/packet-loss domain. The curve is characterized by the two conjunction points: A and B. packet ^ | loss | A| | \ A: (low_bandwidth_bps, low_bandwidth_packet_loss) | \ B: (high_bandwidth_bps, high_bandwidth_packet_loss) | B\________ |---------------> bandwidth

• optional float low_bandwidth_packet_loss = 2

• optional int32 high_bandwidth_bps = 3

• optional float high_bandwidth_packet_loss = 4

Used in: Controller

• optional FecControllerRplrBased.Threshold fec_enabling_threshold = 1

  |fec_enabling_threshold| defines a curve, above which FEC should be enabled. |fec_disabling_threshold| defines a curve, under which FEC should be disabled. See below packet-loss ^ | | | | | FEC | \ \ ON | FEC \ \_______ fec_enabling_threshold | OFF \_________ fec_disabling_threshold |-----------------> bandwidth

• optional FecControllerRplrBased.Threshold fec_disabling_threshold = 2

Used in: FecControllerRplrBased

• optional int32 low_bandwidth_bps = 1

  Threshold defines a curve in the bandwidth/recoverable-packet-loss domain. The curve is characterized by the two conjunction points: A and B. recoverable ^ packet | | loss | A| | \ A: (low_bandwidth_bps, | \ low_bandwidth_recoverable_packet_loss) | \ B: (high_bandwidth_bps, | \ high_bandwidth_recoverable_packet_loss) | B\________ |---------------> bandwidth

• optional float low_bandwidth_recoverable_packet_loss = 2

• optional int32 high_bandwidth_bps = 3

• optional float high_bandwidth_recoverable_packet_loss = 4

Used in: Controller

• optional float fl_increasing_packet_loss_fraction = 1

  Uplink packet loss fraction below which frame length can increase.

• optional float fl_decreasing_packet_loss_fraction = 2

  Uplink packet loss fraction above which frame length should decrease.

• optional int32 fl_20ms_to_60ms_bandwidth_bps = 3

  Uplink bandwidth below which frame length can switch from 20ms to 60ms.

• optional int32 fl_60ms_to_20ms_bandwidth_bps = 4

  Uplink bandwidth above which frame length should switch from 60ms to 20ms.

• optional int32 fl_60ms_to_120ms_bandwidth_bps = 5

  Uplink bandwidth below which frame length can switch from 60ms to 120ms.

• optional int32 fl_120ms_to_60ms_bandwidth_bps = 6

  Uplink bandwidth above which frame length should switch from 120ms to 60ms.

• optional int32 fl_increase_overhead_offset = 7

  Offset to apply to the per-packet overhead when increasing frame length.

• optional int32 fl_decrease_overhead_offset = 8

  Offset to apply to the per-packet overhead when decreasing frame length.

• optional int32 fl_20ms_to_40ms_bandwidth_bps = 9

  Uplink bandwidth below which frame length can switch from 20ms to 40ms. In current implementation, defining this will invalidate fl_20ms_to_60ms_bandwidth_bps.

• optional int32 fl_40ms_to_20ms_bandwidth_bps = 10

  Uplink bandwidth above which frame length should switch from 40ms to 20ms.

• optional int32 fl_40ms_to_60ms_bandwidth_bps = 11

  Uplink bandwidth below which frame length can switch from 40ms to 60ms.

• optional int32 fl_60ms_to_40ms_bandwidth_bps = 12

  Uplink bandwidth above which frame length should switch from 60ms to 40ms. In current implementation, defining this will invalidate fl_60ms_to_20ms_bandwidth_bps.

Used in: Controller

• optional int32 min_payload_bitrate_bps = 1

  FrameLengthControllerV2 chooses the frame length by taking the target bitrate and subtracting the overhead bitrate to obtain the remaining bitrate for the payload. The chosen frame length is the shortest possible where the payload bitrate is more than |min_payload_bitrate_bps|.

• optional bool use_slow_adaptation = 2

  If true, uses the stable target bitrate to decide the frame length. This will result in less frame length toggling but spending more time at longer frame lengths compared to using the normal target bitrate.