| /* |
| * 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. |
| */ |
| |
| #ifndef WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ |
| #define WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ |
| |
| #include "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 |
| WebRtc_Word32 UpdateContentData(const VideoContentMetrics *contentMetrics); |
| |
| // Reset the short-term averaged content data |
| void ResetShortTermAvgData(); |
| |
| // Initialize to |
| WebRtc_Word32 Reset(); |
| |
| // Inform class of current frame rate |
| void UpdateFrameRate(WebRtc_UWord32 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 avg |
| WebRtc_UWord32 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 reports). |
| void UpdateUniformAvg(const VideoContentMetrics *contentMetrics); |
| |
| VideoContentMetrics* _recursiveAvg; |
| VideoContentMetrics* _uniformAvg; |
| WebRtc_UWord32 _frameRate; |
| float _recAvgFactor; |
| WebRtc_UWord32 _frameCntRecursiveAvg; |
| WebRtc_UWord32 _frameCntUniformAvg; |
| float _avgMotionLevel; |
| float _avgSpatialLevel; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ |