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/*
* Copyright (c) 2012 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.
*/
#ifndef WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_
#define WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_
#include "webrtc/typedefs.h"
namespace webrtc {
struct VideoContentMetrics;
// QM interval time (in ms)
enum {
kQmMinIntervalMs = 10000
};
// Flag for NFD metric vs motion metric
enum {
kNfdMetric = 1
};
/**********************************/
/* Content Metrics Processing */
/**********************************/
class VCMContentMetricsProcessing {
public:
VCMContentMetricsProcessing();
~VCMContentMetricsProcessing();
// Update class with latest metrics.
int UpdateContentData(const VideoContentMetrics *contentMetrics);
// Reset the short-term averaged content data.
void ResetShortTermAvgData();
// Initialize.
int Reset();
// Inform class of current frame rate.
void UpdateFrameRate(uint32_t frameRate);
// Returns the long-term averaged content data: recursive average over longer
// time scale.
VideoContentMetrics* LongTermAvgData();
// Returns the short-term averaged content data: uniform average over
// shorter time scalE.
VideoContentMetrics* ShortTermAvgData();
private:
// Compute working average.
int ProcessContent(const VideoContentMetrics *contentMetrics);
// Update the recursive averaged metrics: longer time average (~5/10 secs).
void UpdateRecursiveAvg(const VideoContentMetrics *contentMetrics);
// Update the uniform averaged metrics: shorter time average (~RTCP report).
void UpdateUniformAvg(const VideoContentMetrics *contentMetrics);
VideoContentMetrics* recursive_avg_;
VideoContentMetrics* uniform_avg_;
float recursive_avg_factor_;
uint32_t frame_cnt_uniform_avg_;
float avg_motion_level_;
float avg_spatial_level_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_
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