Deringing cleanup: remove DERING_REFINEMENT (always on now)

Change-Id: Ic3a6855799be010e69aeab924b013679282ab191

av1/common/dering.c

@@ -101,15 +101,11 @@ void av1_dering_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm,
       for (pli = 0; pli < 3; pli++) {
         int16_t dst[MAX_MIB_SIZE * MAX_MIB_SIZE * 8 * 8];
         int threshold;
-#if DERING_REFINEMENT
         level = compute_level_from_index(
             global_level,
             cm->mi_grid_visible[MAX_MIB_SIZE * sbr * cm->mi_stride +
                                 MAX_MIB_SIZE * sbc]
                 ->mbmi.dering_gain);
-#else
-          level = global_level;
-#endif
         /* FIXME: This is a temporary hack that uses more conservative
            deringing for chroma. */
         if (pli) level = (level * 5 + 4) >> 3;

av1/common/dering.h

@@ -24,7 +24,6 @@ extern "C" {
 #define DERING_LEVEL_BITS 6
 #define MAX_DERING_LEVEL (1 << DERING_LEVEL_BITS)
 
-#define DERING_REFINEMENT 1
 #define DERING_REFINEMENT_BITS 2
 #define DERING_REFINEMENT_LEVELS 4
 

av1/decoder/decodeframe.c

@@ -672,7 +672,7 @@ static void decode_partition(AV1Decoder *const pbi, MACROBLOCKD *const xd,
       (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
     dec_update_partition_context(xd, mi_row, mi_col, subsize, num_8x8_wh);
 
-#if DERING_REFINEMENT
+#if CONFIG_DERING
   if (bsize == BLOCK_64X64) {
     if (cm->dering_level != 0 && !sb_all_skip(cm, mi_row, mi_col)) {
       cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col]->mbmi.dering_gain =

av1/encoder/bitstream.c

@@ -910,7 +910,7 @@ static void write_modes_sb(AV1_COMP *cpi, const TileInfo *const tile,
       (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
     update_partition_context(xd, mi_row, mi_col, subsize, bsize);
 
-#if DERING_REFINEMENT
+#if CONFIG_DERING
   if (bsize == BLOCK_64X64 && cm->dering_level != 0 &&
       !sb_all_skip(cm, mi_row, mi_col)) {
     aom_write_literal(

av1/encoder/pickdering.c

@@ -118,7 +118,6 @@ int av1_dering_search(YV12_BUFFER_CONFIG *frame, const YV12_BUFFER_CONFIG *ref,
       }
     }
   }
-#if DERING_REFINEMENT
   best_level = 0;
   /* Search for the best global level one value at a time. */
   for (global_level = 2; global_level < MAX_DERING_LEVEL; global_level++) {
@@ -161,12 +160,6 @@ int av1_dering_search(YV12_BUFFER_CONFIG *frame, const YV12_BUFFER_CONFIG *ref,
           ->mbmi.dering_gain = best_gi;
     }
   }
-#else
-    best_level = 0;
-    for (level = 0; level < MAX_DERING_LEVEL; level++) {
-      if (tot_mse[level] < tot_mse[best_level]) best_level = level;
-    }
-#endif
   aom_free(src);
   aom_free(ref_coeff);
   aom_free(bskip);