External denoiser based on noise estimation and moving object detection.

webrtc/modules/video_processing/util/denoiser_filter_c.cc

Index: webrtc/modules/video_processing/util/denoiser_filter_c.cc
diff --git a/webrtc/modules/video_processing/util/denoiser_filter_c.cc b/webrtc/modules/video_processing/util/denoiser_filter_c.cc
index 6323980e1823559ac86910522d93dbb365f1a05b..c9d8bd9695a51a66262791f792ec43898fa1c455 100644
--- a/webrtc/modules/video_processing/util/denoiser_filter_c.cc
+++ b/webrtc/modules/video_processing/util/denoiser_filter_c.cc
@@ -66,7 +66,8 @@ DenoiserDecision DenoiserFilterC::MbDenoise(uint8_t* mc_running_avg_y,
                                             const uint8_t* sig,
                                             int sig_stride,
                                             uint8_t motion_magnitude,
-                                            int increase_denoising) {
+                                            int increase_denoising,
+                                            bool denoise_always) {
   int sum_diff_thresh = 0;
   int sum_diff = 0;
   int adj_val[3] = {3, 4, 6};
@@ -137,7 +138,9 @@ DenoiserDecision DenoiserFilterC::MbDenoise(uint8_t* mc_running_avg_y,
   }
 
   sum_diff_thresh = kSumDiffThreshold;
-  if (increase_denoising)
+  if (denoise_always)

[marpan, 2016/03/30 18:27:20]

better to put this before 140?
if (denoise_always) {
  sum_diff_thresh = INT_MAX;
}else {
  if (increase_denoising)
     sum_diff_thresh = kSumDiffThresholdHigh;
  else
    sum_diff_thresh = kSumDiffThreshold;
}

[jackychen_, 2016/03/30 22:36:37]

Done.

+    sum_diff_thresh = INT_MAX;
+  else if (increase_denoising)
     sum_diff_thresh = kSumDiffThresholdHigh;
   if (abs(sum_diff) > sum_diff_thresh) {
     int delta = ((abs(sum_diff) - sum_diff_thresh) >> 8) + 1;