External denoiser based on noise estimation and moving object detection.

webrtc/modules/video_processing/util/denoiser_filter.cc

Index: webrtc/modules/video_processing/util/denoiser_filter.cc
diff --git a/webrtc/modules/video_processing/util/denoiser_filter.cc b/webrtc/modules/video_processing/util/denoiser_filter.cc
index a9c6f005d96cfd1059a69bf01572b47ed0b3b13e..b111a0e4123e6518ff60d4438536d937dfbbc91a 100644
--- a/webrtc/modules/video_processing/util/denoiser_filter.cc
+++ b/webrtc/modules/video_processing/util/denoiser_filter.cc
@@ -18,13 +18,16 @@
 namespace webrtc {
 
 const int kMotionMagnitudeThreshold = 8 * 3;
-const int kSumDiffThreshold = 16 * 16 * 2;
-const int kSumDiffThresholdHigh = 600;
+const int kSumDiffThreshold = 96;
+const int kSumDiffThresholdHigh = 448;
 
 std::unique_ptr<DenoiserFilter> DenoiserFilter::Create(
-    bool runtime_cpu_detection) {
+    bool runtime_cpu_detection,
+    CpuType* cpu_type) {
   std::unique_ptr<DenoiserFilter> filter;
 
+  if (cpu_type != nullptr)
+    *cpu_type = CPU_NOT_NEON;
   if (runtime_cpu_detection) {
 // If we know the minimum architecture at compile time, avoid CPU detection.
 #if defined(WEBRTC_ARCH_X86_FAMILY)
@@ -40,9 +43,13 @@ std::unique_ptr<DenoiserFilter> DenoiserFilter::Create(
 #endif
 #elif defined(WEBRTC_HAS_NEON)
     filter.reset(new DenoiserFilterNEON());
+    if (cpu_type != nullptr)
+      *cpu_type = CPU_NEON;
 #elif defined(WEBRTC_DETECT_NEON)
     if (WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) {
       filter.reset(new DenoiserFilterNEON());
+      if (cpu_type != nullptr)
+        *cpu_type = CPU_NEON;
     } else {
       filter.reset(new DenoiserFilterC());
     }