cce46fc108
Trying to submit all changes at once proved impossible since there were too many changes in too many files. The changes to PRESUBMIT.py will be uploaded in the last CL. (original CL: https://codereview.webrtc.org/1528503003/) BUG=webrtc:5309 TBR=mflodman@webrtc.org Review URL: https://codereview.webrtc.org/1541803002 Cr-Commit-Position: refs/heads/master@{#11100}
97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/*
|
|
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "webrtc/modules/video_coding/codec_timer.h"
|
|
|
|
#include <assert.h>
|
|
|
|
namespace webrtc {
|
|
|
|
// The first kIgnoredSampleCount samples will be ignored.
|
|
static const int32_t kIgnoredSampleCount = 5;
|
|
|
|
VCMCodecTimer::VCMCodecTimer()
|
|
: _filteredMax(0), _ignoredSampleCount(0), _shortMax(0), _history() {
|
|
Reset();
|
|
}
|
|
|
|
void VCMCodecTimer::Reset() {
|
|
_filteredMax = 0;
|
|
_ignoredSampleCount = 0;
|
|
_shortMax = 0;
|
|
for (int i = 0; i < MAX_HISTORY_SIZE; i++) {
|
|
_history[i].shortMax = 0;
|
|
_history[i].timeMs = -1;
|
|
}
|
|
}
|
|
|
|
// Update the max-value filter
|
|
void VCMCodecTimer::MaxFilter(int32_t decodeTime, int64_t nowMs) {
|
|
if (_ignoredSampleCount >= kIgnoredSampleCount) {
|
|
UpdateMaxHistory(decodeTime, nowMs);
|
|
ProcessHistory(nowMs);
|
|
} else {
|
|
_ignoredSampleCount++;
|
|
}
|
|
}
|
|
|
|
void VCMCodecTimer::UpdateMaxHistory(int32_t decodeTime, int64_t now) {
|
|
if (_history[0].timeMs >= 0 && now - _history[0].timeMs < SHORT_FILTER_MS) {
|
|
if (decodeTime > _shortMax) {
|
|
_shortMax = decodeTime;
|
|
}
|
|
} else {
|
|
// Only add a new value to the history once a second
|
|
if (_history[0].timeMs == -1) {
|
|
// First, no shift
|
|
_shortMax = decodeTime;
|
|
} else {
|
|
// Shift
|
|
for (int i = (MAX_HISTORY_SIZE - 2); i >= 0; i--) {
|
|
_history[i + 1].shortMax = _history[i].shortMax;
|
|
_history[i + 1].timeMs = _history[i].timeMs;
|
|
}
|
|
}
|
|
if (_shortMax == 0) {
|
|
_shortMax = decodeTime;
|
|
}
|
|
|
|
_history[0].shortMax = _shortMax;
|
|
_history[0].timeMs = now;
|
|
_shortMax = 0;
|
|
}
|
|
}
|
|
|
|
void VCMCodecTimer::ProcessHistory(int64_t nowMs) {
|
|
_filteredMax = _shortMax;
|
|
if (_history[0].timeMs == -1) {
|
|
return;
|
|
}
|
|
for (int i = 0; i < MAX_HISTORY_SIZE; i++) {
|
|
if (_history[i].timeMs == -1) {
|
|
break;
|
|
}
|
|
if (nowMs - _history[i].timeMs > MAX_HISTORY_SIZE * SHORT_FILTER_MS) {
|
|
// This sample (and all samples after this) is too old
|
|
break;
|
|
}
|
|
if (_history[i].shortMax > _filteredMax) {
|
|
// This sample is the largest one this far into the history
|
|
_filteredMax = _history[i].shortMax;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get the maximum observed time within a time window
|
|
int32_t VCMCodecTimer::RequiredDecodeTimeMs(FrameType /*frameType*/) const {
|
|
return _filteredMax;
|
|
}
|
|
} // namespace webrtc
|