External denoiser based on noise estimation and moving object detection.

webrtc/modules/video_processing/util/denoiser_filter_sse2.cc

Index: webrtc/modules/video_processing/util/denoiser_filter_sse2.cc
diff --git a/webrtc/modules/video_processing/util/denoiser_filter_sse2.cc b/webrtc/modules/video_processing/util/denoiser_filter_sse2.cc
index 903d7b1ec66243df449dedd7ba8421af735915e5..cc10bb6621ea138d85762d35cb7aa6d6d9829b13 100644
--- a/webrtc/modules/video_processing/util/denoiser_filter_sse2.cc
+++ b/webrtc/modules/video_processing/util/denoiser_filter_sse2.cc
@@ -139,7 +139,8 @@ DenoiserDecision DenoiserFilterSSE2::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_anyway) {
   int shift_inc =
       (increase_denoising && motion_magnitude <= kMotionMagnitudeThreshold) ? 1
                                                                             : 0;
@@ -212,7 +213,9 @@ DenoiserDecision DenoiserFilterSSE2::MbDenoise(uint8_t* mc_running_avg_y,
     // Compute the sum of all pixel differences of this MB.
     unsigned int abs_sum_diff = AbsSumDiff16x1(acc_diff);
     unsigned int sum_diff_thresh = kSumDiffThreshold;
-    if (increase_denoising)
+    if (denoise_anyway)
+      sum_diff_thresh = kSumDiffThresholdMax;
+    else if (increase_denoising)
       sum_diff_thresh = kSumDiffThresholdHigh;
     if (abs_sum_diff > sum_diff_thresh) {
       // Before returning to copy the block (i.e., apply no denoising),