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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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32
modules/audio_coding/neteq/delay_manager.cc
View File

@ -482,16 +482,19 @@ DelayManager::IATVector DelayManager::ScaleHistogram(const IATVector& histogram,
return new_histogram;
}
bool DelayManager::IsValidMinimumDelay(int delay_ms) {
const int q75 =
rtc::dchecked_cast<int>(3 * max_packets_in_buffer_ * packet_len_ms_ / 4);
return delay_ms >= 0 &&
(maximum_delay_ms_ <= 0 || delay_ms <= maximum_delay_ms_) &&
(packet_len_ms_ <= 0 || delay_ms <= q75);
}
bool DelayManager::SetMinimumDelay(int delay_ms) {
// Minimum delay shouldn't be more than maximum delay, if any maximum is set.
// Also, if possible check |delay| to less than 75% of
// |max_packets_in_buffer_|.
if ((maximum_delay_ms_ > 0 && delay_ms > maximum_delay_ms_) ||
(packet_len_ms_ > 0 &&
delay_ms >
static_cast<int>(3 * max_packets_in_buffer_ * packet_len_ms_ / 4))) {
if (!IsValidMinimumDelay(delay_ms)) {
return false;
}
// Ensure that minimum_delay_ms is no bigger than base_min_target_delay_ms_
minimum_delay_ms_ = std::max(delay_ms, base_min_target_delay_ms_);
return true;
}
@ -509,6 +512,21 @@ bool DelayManager::SetMaximumDelay(int delay_ms) {
return true;
}
bool DelayManager::SetBaseMinimumDelay(int delay_ms) {
if (!IsValidMinimumDelay(delay_ms)) {
return false;
}
base_min_target_delay_ms_ = delay_ms;
// Ensure that minimum_delay_ms is no bigger than base_min_target_delay_ms_
minimum_delay_ms_ = std::max(delay_ms, base_min_target_delay_ms_);
return true;
}
int DelayManager::GetBaseMinimumDelay() const {
return base_min_target_delay_ms_;
}
int DelayManager::base_target_level() const {
return base_target_level_;
}