Merge "Rd thresholds change with block size." into experimental

vp9/encoder/vp9_onyx_if.c

@@ -736,18 +736,18 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
   sf->quarter_pixel_search = 1;
   sf->half_pixel_search = 1;
   sf->iterative_sub_pixel = 1;
-  sf->no_skip_block4x4_search = 1;
   sf->optimize_coefficients = !cpi->oxcf.lossless;
   sf->first_step = 0;
   sf->max_step_search_steps = MAX_MVSEARCH_STEPS;
   sf->comp_inter_joint_search_thresh = BLOCK_SIZE_AB4X4;
+  sf->adpative_rd_thresh = 0;
+
 #if CONFIG_MULTIPLE_ARF
   // Switch segmentation off.
   sf->static_segmentation = 0;
 #else
   sf->static_segmentation = 0;
 #endif
-  sf->mb16_breakout = 0;
 
   switch (mode) {
     case 0: // best quality mode
@@ -761,13 +761,11 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
 #else
   sf->static_segmentation = 0;
 #endif
-      sf->mb16_breakout = 0;
       sf->comp_inter_joint_search_thresh = BLOCK_SIZE_SB8X8;
-
+      sf->adpative_rd_thresh = 1;
       if (speed > 0) {
         sf->comp_inter_joint_search_thresh = BLOCK_SIZE_TYPES;
         sf->optimize_coefficients = 0;
-        sf->no_skip_block4x4_search = 0;
         sf->first_step = 1;
       }
       break;

vp9/encoder/vp9_onyx_int.h

@@ -213,11 +213,10 @@ typedef struct {
   int max_step_search_steps;
   int first_step;
   int optimize_coefficients;
-  int no_skip_block4x4_search;
   int search_best_filter;
-  int mb16_breakout;
   int static_segmentation;
   int comp_inter_joint_search_thresh;
+  int adpative_rd_thresh;
 } SPEED_FEATURES;
 
 enum BlockSize {
@@ -320,8 +319,10 @@ typedef struct VP9_COMP {
   unsigned int mode_chosen_counts[MAX_MODES];
 
   int rd_thresh_mult[MAX_MODES];
-  int rd_baseline_thresh[MAX_MODES];
+  int rd_baseline_thresh[BLOCK_SIZE_TYPES][MAX_MODES];
-  int rd_threshes[MAX_MODES];
+  int rd_threshes[BLOCK_SIZE_TYPES][MAX_MODES];
+  int rd_thresh_freq_fact[BLOCK_SIZE_TYPES][MAX_MODES];
+
   int64_t rd_comp_pred_diff[NB_PREDICTION_TYPES];
   int rd_prediction_type_threshes[4][NB_PREDICTION_TYPES];
   int comp_pred_count[COMP_PRED_CONTEXTS];

vp9/encoder/vp9_rdopt.c

@@ -111,6 +111,17 @@ const MODE_DEFINITION vp9_mode_order[MAX_MODES] = {
   {SPLITMV,   GOLDEN_FRAME, ALTREF_FRAME},
 };
 
+// The baseline rd thresholds for breaking out of the rd loop for
+// certain modes are assumed to be based on 8x8 blocks.
+// This table is used to correct for blocks size.
+// The factors here are << 2 (2 = x0.5, 32 = x8 etc).
+static int rd_thresh_block_size_factor[BLOCK_SIZE_TYPES] =
+  {2, 3, 3, 4, 6, 6, 8, 12, 12, 16, 24, 24, 32};
+
+#define BASE_RD_THRESH_FREQ_FACT 16
+#define MAX_RD_THRESH_FREQ_FACT 32
+#define MAX_RD_THRESH_FREQ_INC 1
+
 static void fill_token_costs(vp9_coeff_count (*c)[BLOCK_TYPES],
                              vp9_coeff_count (*cnoskip)[BLOCK_TYPES],
                              vp9_coeff_probs_model (*p)[BLOCK_TYPES]) {
@@ -175,7 +186,7 @@ void vp9_initialize_me_consts(VP9_COMP *cpi, int qindex) {
 
 
 void vp9_initialize_rd_consts(VP9_COMP *cpi, int qindex) {
-  int q, i;
+  int q, i, bsize;
 
   vp9_clear_system_state();  // __asm emms;
 
@@ -207,24 +218,43 @@ void vp9_initialize_rd_consts(VP9_COMP *cpi, int qindex) {
     cpi->RDDIV = 1;
     cpi->RDMULT /= 100;
 
-    for (i = 0; i < MAX_MODES; i++) {
+    for (bsize = 0; bsize < BLOCK_SIZE_TYPES; ++bsize) {
-      if (cpi->sf.thresh_mult[i] < INT_MAX) {
+      for (i = 0; i < MAX_MODES; ++i) {
-        cpi->rd_threshes[i] = cpi->sf.thresh_mult[i] * q / 100;
+        // Threshold here seem unecessarily harsh but fine given actual
+        // range of values used for cpi->sf.thresh_mult[]
+        int thresh_max = INT_MAX / (q * rd_thresh_block_size_factor[bsize]);
+
+        // *4 relates to the scaling of rd_thresh_block_size_factor[]
+        if ((int64_t)cpi->sf.thresh_mult[i] < thresh_max) {
+          cpi->rd_threshes[bsize][i] =
+            cpi->sf.thresh_mult[i] * q *
+            rd_thresh_block_size_factor[bsize] / (4 * 100);
         } else {
-        cpi->rd_threshes[i] = INT_MAX;
+          cpi->rd_threshes[bsize][i] = INT_MAX;
+        }
+        cpi->rd_baseline_thresh[bsize][i] = cpi->rd_threshes[bsize][i];
+        cpi->rd_thresh_freq_fact[bsize][i] = BASE_RD_THRESH_FREQ_FACT;
       }
-      cpi->rd_baseline_thresh[i] = cpi->rd_threshes[i];
     }
   } else {
     cpi->RDDIV = 100;
 
+    for (bsize = 0; bsize < BLOCK_SIZE_TYPES; ++bsize) {
       for (i = 0; i < MAX_MODES; i++) {
-      if (cpi->sf.thresh_mult[i] < (INT_MAX / q)) {
+        // Threshold here seem unecessarily harsh but fine given actual
-        cpi->rd_threshes[i] = cpi->sf.thresh_mult[i] * q;
+        // range of values used for cpi->sf.thresh_mult[]
+        int thresh_max = INT_MAX / (q * rd_thresh_block_size_factor[bsize]);
+
+        if (cpi->sf.thresh_mult[i] < thresh_max) {
+          cpi->rd_threshes[bsize][i] =
+            cpi->sf.thresh_mult[i] * q *
+            rd_thresh_block_size_factor[bsize] / 4;
         } else {
-        cpi->rd_threshes[i] = INT_MAX;
+          cpi->rd_threshes[bsize][i] = INT_MAX;
+        }
+        cpi->rd_baseline_thresh[bsize][i] = cpi->rd_threshes[bsize][i];
+        cpi->rd_thresh_freq_fact[bsize][i] = BASE_RD_THRESH_FREQ_FACT;
       }
-      cpi->rd_baseline_thresh[i] = cpi->rd_threshes[i];
     }
   }
 
@@ -2619,9 +2649,9 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
       txfm_cache[i] = INT64_MAX;
 
     // Test best rd so far against threshold for trying this mode.
-    if (bsize >= BLOCK_SIZE_SB8X8 &&
+    if ((best_rd < ((cpi->rd_threshes[bsize][mode_index] *
-        (best_rd < cpi->rd_threshes[mode_index] ||
+                     cpi->rd_thresh_freq_fact[bsize][mode_index]) >> 4)) ||
-         cpi->rd_threshes[mode_index] == INT_MAX))
+        cpi->rd_threshes[bsize][mode_index] == INT_MAX)
       continue;
 
     x->skip = 0;
@@ -2812,9 +2842,10 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
       int uv_skippable;
 
       this_rd_thresh = (mbmi->ref_frame == LAST_FRAME) ?
-          cpi->rd_threshes[THR_NEWMV] : cpi->rd_threshes[THR_NEWA];
+          cpi->rd_threshes[bsize][THR_NEWMV] :
+          cpi->rd_threshes[bsize][THR_NEWA];
       this_rd_thresh = (mbmi->ref_frame == GOLDEN_FRAME) ?
-          cpi->rd_threshes[THR_NEWG] : this_rd_thresh;
+          cpi->rd_threshes[bsize][THR_NEWG] : this_rd_thresh;
       xd->mode_info_context->mbmi.txfm_size = TX_4X4;
 
       for (switchable_filter_index = 0;
@@ -3155,7 +3186,27 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
   if (is_inter_mode(best_mode))
     ++cpi->best_switchable_interp_count[vp9_switchable_interp_map[best_filter]];
 
-  // TODO(rbultje) integrate with RD thresholding
+  // Updating rd_thresh_freq_fact[] here means that the differnt
+  // partition/block sizes are handled independently based on the best
+  // choice for the current partition. It may well be better to keep a scaled
+  // best rd so far value and update rd_thresh_freq_fact based on the mode/size
+  // combination that wins out.
+  if (cpi->sf.adpative_rd_thresh) {
+    for (mode_index = 0; mode_index < MAX_MODES; ++mode_index) {
+      if (mode_index == best_mode_index) {
+        cpi->rd_thresh_freq_fact[bsize][mode_index] = BASE_RD_THRESH_FREQ_FACT;
+      } else {
+        cpi->rd_thresh_freq_fact[bsize][mode_index] += MAX_RD_THRESH_FREQ_INC;
+        if (cpi->rd_thresh_freq_fact[bsize][mode_index] >
+            (cpi->sf.adpative_rd_thresh * MAX_RD_THRESH_FREQ_FACT)) {
+          cpi->rd_thresh_freq_fact[bsize][mode_index] =
+            cpi->sf.adpative_rd_thresh * MAX_RD_THRESH_FREQ_FACT;
+        }
+      }
+    }
+  }
+
+  // TODO(rbultje) integrate with RD trd_thresh_freq_facthresholding
 #if 0
   // Reduce the activation RD thresholds for the best choice mode
   if ((cpi->rd_baseline_thresh[best_mode_index] > 0) &&