VP9 denoiser: implemented update_frame_stats()

Also added reset_frame_stats()

Change-Id: I8e6ca00dbd5fa85cd39485d81c9343c0ff207d6c

vp9/encoder/vp9_denoiser.c

@@ -9,6 +9,7 @@
  */
 
 #include <assert.h>
+#include <limits.h>
 #include "vpx_scale/yv12config.h"
 #include "vpx/vpx_integer.h"
 #include "vp9/encoder/vp9_denoiser.h"
@@ -156,7 +157,25 @@ void vp9_denoiser_update_frame_info(VP9_DENOISER *denoiser,
   }
 }
 
-void vp9_denoiser_update_frame_stats() {
+void vp9_denoiser_reset_frame_stats(VP9_DENOISER *denoiser) {
+  denoiser->zero_mv_sse = UINT_MAX;
+  denoiser->best_sse = UINT_MAX;
+}
+
+void vp9_denoiser_update_frame_stats(VP9_DENOISER *denoiser, MB_MODE_INFO *mbmi,
+                                     unsigned int sse, PREDICTION_MODE mode) {
+  // TODO(tkopp): Use both MVs if possible
+  if (mbmi->mv[0].as_int == 0 && sse < denoiser->zero_mv_sse) {
+    denoiser->zero_mv_sse = sse;
+    denoiser->best_zeromv_reference_frame = mbmi->ref_frame[0];
+  }
+
+  if (mbmi->mv[0].as_int != 0 && sse < denoiser->best_sse) {
+    denoiser->best_sse = sse;
+    denoiser->best_sse_inter_mode = mode;
+    denoiser->best_sse_mv = mbmi->mv[0];
+    denoiser->best_reference_frame = mbmi->ref_frame[0];
+  }
 }
 
 int vp9_denoiser_alloc(VP9_DENOISER *denoiser, int width, int height,
@@ -180,6 +199,8 @@ int vp9_denoiser_alloc(VP9_DENOISER *denoiser, int width, int height,
     return 1;
   }
 
+  denoiser->increase_denoising = 0;
+
   return 0;
 }
 

vp9/encoder/vp9_denoiser.h

@@ -26,6 +26,14 @@ enum vp9_denoiser_decision {
 typedef struct vp9_denoiser {
   YV12_BUFFER_CONFIG running_avg_y[MAX_REF_FRAMES];
   YV12_BUFFER_CONFIG mc_running_avg_y;
+
+  unsigned int zero_mv_sse;
+  unsigned int best_sse;
+  int increase_denoising;
+  PREDICTION_MODE best_sse_inter_mode;
+  int_mv best_sse_mv;
+  MV_REFERENCE_FRAME best_reference_frame;
+  MV_REFERENCE_FRAME best_zeromv_reference_frame;
 } VP9_DENOISER;
 
 void vp9_denoiser_update_frame_info(VP9_DENOISER *denoiser,
@@ -38,7 +46,10 @@ void vp9_denoiser_update_frame_info(VP9_DENOISER *denoiser,
 void vp9_denoiser_denoise(VP9_DENOISER *denoiser, MACROBLOCK *mb,
                           int mi_row, int mi_col, BLOCK_SIZE bs);
 
-void vp9_denoiser_update_frame_stats();
+void vp9_denoiser_reset_frame_stats(VP9_DENOISER *denoiser);
+
+void vp9_denoiser_update_frame_stats(VP9_DENOISER *denoiser, MB_MODE_INFO *mbmi,
+                                     unsigned int sse, PREDICTION_MODE mode);
 
 int vp9_denoiser_alloc(VP9_DENOISER *denoiser, int width, int height,
                        int ssx, int ssy, int border);

vp9/encoder/vp9_pickmode.c

@@ -352,6 +352,10 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
   PRED_BUFFER *this_mode_pred = NULL;
   int i;
 
+#if CONFIG_DENOISING
+  vp9_denoiser_reset_frame_stats(&cpi->denoiser);
+#endif
+
   if (cpi->sf.reuse_inter_pred_sby) {
     for (i = 0; i < 3; i++) {
       tmp[i].data = &pred_buf[pixels_in_block * i];
@@ -631,7 +635,7 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
       }
 
 #if CONFIG_DENOISING
-    vp9_denoiser_update_frame_stats();
+      vp9_denoiser_update_frame_stats(&cpi->denoiser, mbmi, sse_y, this_mode);
 #endif
 
       if (this_rd < best_rd || x->skip) {