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Allow to change base minimum delay on NetEq.

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This is first step to allow to set latency
from client code in Chromium.
Existing minimum latency hasn't been used because it can clash
with video syncronization code.

Bug: webrtc:10287
Change-Id: Ia38906506069a1abfa01698dc62df283fc15cfbc
Reviewed-on: https://webrtc-review.googlesource.com/c/121423
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Commit-Queue: Ruslan Burakov <kuddai@google.com>
Cr-Commit-Position: refs/heads/master@{#26536}
This commit is contained in:
Ruslan Burakov
2019-02-04 16:17:31 +01:00
committed by Commit Bot
parent d8b980464c
commit edbea46295
3 changed files with 78 additions and 9 deletions
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11
modules/audio_coding/neteq/delay_manager.h
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@ -112,6 +112,8 @@ class DelayManager {
// Assuming |delay| is in valid range.
virtual bool SetMinimumDelay(int delay_ms);
virtual bool SetMaximumDelay(int delay_ms);
virtual bool SetBaseMinimumDelay(int delay_ms);
virtual int GetBaseMinimumDelay() const;
virtual int base_target_level() const;
virtual void set_streaming_mode(bool value);
virtual int last_pack_cng_or_dtmf() const;
@ -141,13 +143,18 @@ class DelayManager {
// called by Update().
void LimitTargetLevel();
// Makes sure that |delay_ms| is less than maximum delay, if any maximum
// is set. Also, if possible check |delay_ms| to be less than 75% of
// |max_packets_in_buffer_|.
bool IsValidMinimumDelay(int delay_ms);
bool first_packet_received_;
const size_t max_packets_in_buffer_; // Capacity of the packet buffer.
IATVector iat_vector_; // Histogram of inter-arrival times.
int iat_factor_; // Forgetting factor for updating the IAT histogram (Q15).
const TickTimer* tick_timer_;
const int base_min_target_delay_ms_; // Lower bound for target_level_ and
// minimum_delay_ms_.
int base_min_target_delay_ms_; // Lower bound for target_level_ and
// minimum_delay_ms_.
// Time elapsed since last packet.
std::unique_ptr<TickTimer::Stopwatch> packet_iat_stopwatch_;
int base_target_level_; // Currently preferred buffer level before peak