1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ 12 #define WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ 13 14 #include "webrtc/typedefs.h" 15 16 namespace webrtc { 17 18 struct VideoContentMetrics; 19 20 // QM interval time (in ms) 21 enum { kQmMinIntervalMs = 10000 }; 22 23 // Flag for NFD metric vs motion metric 24 enum { kNfdMetric = 1 }; 25 26 /**********************************/ 27 /* Content Metrics Processing */ 28 /**********************************/ 29 class VCMContentMetricsProcessing { 30 public: 31 VCMContentMetricsProcessing(); 32 ~VCMContentMetricsProcessing(); 33 34 // Update class with latest metrics. 35 int UpdateContentData(const VideoContentMetrics* contentMetrics); 36 37 // Reset the short-term averaged content data. 38 void ResetShortTermAvgData(); 39 40 // Initialize. 41 int Reset(); 42 43 // Inform class of current frame rate. 44 void UpdateFrameRate(uint32_t frameRate); 45 46 // Returns the long-term averaged content data: recursive average over longer 47 // time scale. 48 VideoContentMetrics* LongTermAvgData(); 49 50 // Returns the short-term averaged content data: uniform average over 51 // shorter time scalE. 52 VideoContentMetrics* ShortTermAvgData(); 53 54 private: 55 // Compute working average. 56 int ProcessContent(const VideoContentMetrics* contentMetrics); 57 58 // Update the recursive averaged metrics: longer time average (~5/10 secs). 59 void UpdateRecursiveAvg(const VideoContentMetrics* contentMetrics); 60 61 // Update the uniform averaged metrics: shorter time average (~RTCP report). 62 void UpdateUniformAvg(const VideoContentMetrics* contentMetrics); 63 64 VideoContentMetrics* recursive_avg_; 65 VideoContentMetrics* uniform_avg_; 66 float recursive_avg_factor_; 67 uint32_t frame_cnt_uniform_avg_; 68 float avg_motion_level_; 69 float avg_spatial_level_; 70 }; 71 } // namespace webrtc 72 #endif // WEBRTC_MODULES_VIDEO_CODING_CONTENT_METRICS_PROCESSING_H_ 73
