shithub: libvpx

Download patch

ref: 86212bc3c19f4d3dd131d7e57b2fbcfb84f03144
parent: 13ce6e6d00a6937d13d315700ea5ab8d228eee0d
parent: 6877acb67e74a837ee5f2539737e3f63002b0ea9
author: Marco Paniconi <[email protected]>
date: Fri Apr 8 13:51:25 EDT 2016

Merge "vp8-denoiser: Avoid doing the mcomp if we don't denoise."

--- a/vp8/encoder/denoising.c
+++ b/vp8/encoder/denoising.c
@@ -572,62 +572,69 @@
             best_sse = zero_mv_sse;
         }
 
-        saved_pre = filter_xd->pre;
-        saved_dst = filter_xd->dst;
+        mv_row = x->best_sse_mv.as_mv.row;
+        mv_col = x->best_sse_mv.as_mv.col;
+        motion_magnitude2 = mv_row * mv_row + mv_col * mv_col;
+        motion_threshold = denoiser->denoise_pars.scale_motion_thresh *
+            NOISE_MOTION_THRESHOLD;
 
-        /* Compensate the running average. */
-        filter_xd->pre.y_buffer = src->y_buffer + recon_yoffset;
-        filter_xd->pre.u_buffer = src->u_buffer + recon_uvoffset;
-        filter_xd->pre.v_buffer = src->v_buffer + recon_uvoffset;
-        /* Write the compensated running average to the destination buffer. */
-        filter_xd->dst.y_buffer = dst->y_buffer + recon_yoffset;
-        filter_xd->dst.u_buffer = dst->u_buffer + recon_uvoffset;
-        filter_xd->dst.v_buffer = dst->v_buffer + recon_uvoffset;
+        if (motion_magnitude2 <
+          denoiser->denoise_pars.scale_increase_filter * NOISE_MOTION_THRESHOLD)
+          x->increase_denoising = 1;
 
-        if (!x->skip)
-        {
-            vp8_build_inter_predictors_mb(filter_xd);
-        }
-        else
-        {
-            vp8_build_inter16x16_predictors_mb(filter_xd,
-                                               filter_xd->dst.y_buffer,
-                                               filter_xd->dst.u_buffer,
-                                               filter_xd->dst.v_buffer,
-                                               filter_xd->dst.y_stride,
-                                               filter_xd->dst.uv_stride);
-        }
-        filter_xd->pre = saved_pre;
-        filter_xd->dst = saved_dst;
-        *mbmi = saved_mbmi;
+        sse_thresh = denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD;
+        if (x->increase_denoising)
+          sse_thresh =
+              denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD_HIGH;
 
-    }
+        if (best_sse > sse_thresh || motion_magnitude2 > motion_threshold)
+          decision = COPY_BLOCK;
 
-    mv_row = x->best_sse_mv.as_mv.row;
-    mv_col = x->best_sse_mv.as_mv.col;
-    motion_magnitude2 = mv_row * mv_row + mv_col * mv_col;
-    motion_threshold = denoiser->denoise_pars.scale_motion_thresh *
-        NOISE_MOTION_THRESHOLD;
+        // If block is considered skin, don't denoise if the block
+        // (1) is selected as non-zero motion for current frame, or
+        // (2) has not been selected as ZERO_LAST mode at least x past frames
+        // in a row.
+        // TODO(marpan): Parameter "x" should be varied with framerate.
+        // In particualar, should be reduced for layers (base layer/LAST).
+        if (x->is_skin && (consec_zero_last < 2 || motion_magnitude2 > 0))
+          decision = COPY_BLOCK;
 
-    if (motion_magnitude2 <
-        denoiser->denoise_pars.scale_increase_filter * NOISE_MOTION_THRESHOLD)
-      x->increase_denoising = 1;
+        if (decision == FILTER_BLOCK) {
+          saved_pre = filter_xd->pre;
+          saved_dst = filter_xd->dst;
 
-    sse_thresh = denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD;
-    if (x->increase_denoising)
-      sse_thresh = denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD_HIGH;
+          /* Compensate the running average. */
+          filter_xd->pre.y_buffer = src->y_buffer + recon_yoffset;
+          filter_xd->pre.u_buffer = src->u_buffer + recon_uvoffset;
+          filter_xd->pre.v_buffer = src->v_buffer + recon_uvoffset;
+          /* Write the compensated running average to the destination buffer. */
+          filter_xd->dst.y_buffer = dst->y_buffer + recon_yoffset;
+          filter_xd->dst.u_buffer = dst->u_buffer + recon_uvoffset;
+          filter_xd->dst.v_buffer = dst->v_buffer + recon_uvoffset;
 
-    if (best_sse > sse_thresh || motion_magnitude2 > motion_threshold)
+          if (!x->skip)
+          {
+              vp8_build_inter_predictors_mb(filter_xd);
+          }
+          else
+          {
+              vp8_build_inter16x16_predictors_mb(filter_xd,
+                                                 filter_xd->dst.y_buffer,
+                                                 filter_xd->dst.u_buffer,
+                                                 filter_xd->dst.v_buffer,
+                                                 filter_xd->dst.y_stride,
+                                                 filter_xd->dst.uv_stride);
+          }
+          filter_xd->pre = saved_pre;
+          filter_xd->dst = saved_dst;
+          *mbmi = saved_mbmi;
+        }
+    } else {
+      // zero_frame should always be 1 for real-time mode, as the
+      // ZEROMV mode is always checked, so we should never go into this branch.
+      // If case ZEROMV is not checked, then we will force no denoise (COPY).
       decision = COPY_BLOCK;
-
-    // If block is considered skin, don't denoise if the block
-    // (1) is selected as non-zero motion for current frame, or
-    // (2) has not been selected as ZERO_LAST mode at least x past frames
-    // in a row.
-    // TODO(marpan): Parameter "x" should be varied with framerate.
-    // In particualar, should be reduced for temporal layers (base layer/LAST).
-    if (x->is_skin && (consec_zero_last < 2 || motion_magnitude2 > 0))
-      decision = COPY_BLOCK;
+    }
 
     if (decision == FILTER_BLOCK)
     {