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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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13
modules/audio_coding/neteq/packet_buffer.cc
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@ -26,6 +26,7 @@
#include "modules/audio_coding/neteq/tick_timer.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
#include "rtc_base/numerics/safe_conversions.h"
namespace webrtc {
namespace {
@ -287,14 +288,22 @@ size_t PacketBuffer::NumSamplesInBuffer(size_t last_decoded_length) const {
return num_samples;
}
size_t PacketBuffer::GetSpanSamples(size_t last_decoded_length) const {
size_t PacketBuffer::GetSpanSamples(size_t last_decoded_length,
size_t sample_rate,
bool count_dtx_waiting_time) const {
if (buffer_.size() == 0) {
return 0;
}
size_t span = buffer_.back().timestamp - buffer_.front().timestamp;
if (buffer_.back().frame && buffer_.back().frame->Duration() > 0) {
span += buffer_.back().frame->Duration();
size_t duration = buffer_.back().frame->Duration();
if (count_dtx_waiting_time && buffer_.back().frame->IsDtxPacket()) {
size_t waiting_time_samples = rtc::dchecked_cast<size_t>(
buffer_.back().waiting_time->ElapsedMs() * (sample_rate / 1000));
duration = std::max(duration, waiting_time_samples);
}
span += duration;
} else {
span += last_decoded_length;
}