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Improve buffer level estimation with DTX and add CNG time stretching.

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The functionality is hidden behind field trial for experimentation.

Bug: webrtc:10736
Change-Id: I1daf60966717c3ea43bf6ee16d190290ab740ce7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144059
Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org>
Reviewed-by: Minyue Li <minyue@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28474}
This commit is contained in:
Jakob Ivarsson
2019-07-03 16:00:30 +02:00
committed by Commit Bot
parent 3d642f8442
commit 46dda83bcb
5 changed files with 100 additions and 35 deletions
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7
modules/audio_coding/neteq/decision_logic.h
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@ -14,6 +14,7 @@
#include "modules/audio_coding/neteq/defines.h"
#include "modules/audio_coding/neteq/tick_timer.h"
#include "rtc_base/constructor_magic.h"
#include "rtc_base/experiments/field_trial_parser.h"
namespace webrtc {
@ -167,7 +168,7 @@ class DecisionLogic final {
DelayManager* delay_manager_;
BufferLevelFilter* buffer_level_filter_;
const TickTimer* tick_timer_;
int fs_mult_;
int sample_rate_;
size_t output_size_samples_;
CngState cng_state_; // Remember if comfort noise is interrupted by other
// event (e.g., DTMF).
@ -178,6 +179,10 @@ class DecisionLogic final {
bool disallow_time_stretching_;
std::unique_ptr<TickTimer::Countdown> timescale_countdown_;
int num_consecutive_expands_;
int time_stretched_cn_samples_;
FieldTrialParameter<bool> estimate_dtx_delay_;
FieldTrialParameter<bool> time_stretch_cn_;
FieldTrialConstrained<int> target_level_window_ms_;
RTC_DISALLOW_COPY_AND_ASSIGN(DecisionLogic);
};