Remove encode_breakout and related speed features

Seems to be dead code

Change-Id: I17b3edc9e82d6a1da172a686522358a6b1a630e9

av1/av1_cx_iface.c

@@ -425,7 +425,6 @@ static aom_codec_err_t set_encoder_config(
   oxcf->key_freq = cfg->kf_max_dist;
 
   oxcf->speed = abs(extra_cfg->cpu_used);
-  oxcf->encode_breakout = extra_cfg->static_thresh;
   oxcf->enable_auto_arf = extra_cfg->enable_auto_alt_ref;
 #if CONFIG_EXT_REFS
   oxcf->enable_auto_brf = extra_cfg->enable_auto_bwd_ref;
@@ -505,7 +504,6 @@ static aom_codec_err_t set_encoder_config(
   printf("lag_in_frames: %d\n", oxcf->lag_in_frames);
   printf("enable_auto_arf: %d\n", oxcf->enable_auto_arf);
   printf("Version: %d\n", oxcf->Version);
-  printf("encode_breakout: %d\n", oxcf->encode_breakout);
   printf("error resilient: %d\n", oxcf->error_resilient_mode);
   printf("frame parallel detokenization: %d\n",
          oxcf->frame_parallel_decoding_mode);

av1/encoder/block.h

@@ -157,8 +157,6 @@ struct macroblock {
 
   int skip;
 
-  int encode_breakout;
-
   // note that token_costs is the cost when eob node is skipped
   av1_coeff_cost token_costs[TX_SIZES];
 

av1/encoder/encodeframe.c

@@ -324,11 +324,8 @@ static void set_offsets(const AV1_COMP *const cpi, const TileInfo *const tile,
       mbmi->segment_id = get_segment_id(cm, map, bsize, mi_row, mi_col);
     }
     av1_init_plane_quantizers(cpi, x, mbmi->segment_id);
-
-    x->encode_breakout = cpi->segment_encode_breakout[mbmi->segment_id];
   } else {
     mbmi->segment_id = 0;
-    x->encode_breakout = cpi->encode_breakout;
   }
 
 #if CONFIG_SUPERTX
@@ -404,7 +401,6 @@ static void set_segment_id_supertx(const AV1_COMP *const cpi,
 
   if (!seg->enabled) {
     seg_id_supertx = 0;
-    x->encode_breakout = cpi->encode_breakout;
   } else {
     // Find the minimum segment_id
     for (r = 0; r < mih; r++)
@@ -415,7 +411,6 @@ static void set_segment_id_supertx(const AV1_COMP *const cpi,
 
     // Initialize plane quantisers
     av1_init_plane_quantizers(cpi, x, seg_id_supertx);
-    x->encode_breakout = cpi->segment_encode_breakout[seg_id_supertx];
   }
 
   // Assign the the segment_id back to segment_id_supertx
@@ -1688,7 +1683,6 @@ static void rd_pick_sb_modes(const AV1_COMP *const cpi, TileDataEnc *tile_data,
       mbmi->segment_id = av1_vaq_segment_id(energy);
       // Re-initialise quantiser
       av1_init_plane_quantizers(cpi, x, mbmi->segment_id);
-      x->encode_breakout = cpi->segment_encode_breakout[mbmi->segment_id];
     }
     x->rdmult = set_segment_rdmult(cpi, x, mbmi->segment_id);
   } else if (aq_mode == COMPLEXITY_AQ) {

av1/encoder/encoder.c

@@ -1897,14 +1897,6 @@ void av1_change_config(struct AV1_COMP *cpi, const AV1EncoderConfig *oxcf) {
   av1_reset_segment_features(cm);
   av1_set_high_precision_mv(cpi, 0);
 
-  {
-    int i;
-
-    for (i = 0; i < MAX_SEGMENTS; i++)
-      cpi->segment_encode_breakout[i] = cpi->oxcf.encode_breakout;
-  }
-  cpi->encode_breakout = cpi->oxcf.encode_breakout;
-
   set_rc_buffer_sizes(rc, &cpi->oxcf);
 
   // Under a configuration change, where maximum_buffer_size may change,
@@ -2167,8 +2159,6 @@ AV1_COMP *av1_create_compressor(AV1EncoderConfig *oxcf,
   kf_list = fopen("kf_list.stt", "w");
 #endif
 
-  cpi->allow_encode_breakout = ENCODE_BREAKOUT_ENABLED;
-
   if (oxcf->pass == 1) {
     av1_init_first_pass(cpi);
   } else if (oxcf->pass == 2) {
@@ -4760,8 +4750,6 @@ static void Pass0Encode(AV1_COMP *cpi, size_t *size, uint8_t *dest,
 
 static void Pass2Encode(AV1_COMP *cpi, size_t *size, uint8_t *dest,
                         unsigned int *frame_flags) {
-  cpi->allow_encode_breakout = ENCODE_BREAKOUT_ENABLED;
-
   encode_frame_to_data_rate(cpi, size, dest, frame_flags);
 
 #if CONFIG_EXT_REFS

av1/encoder/encoder.h

@@ -85,15 +85,6 @@ typedef enum {
 #endif
 } FRAME_CONTEXT_INDEX;
 
-typedef enum {
-  // encode_breakout is disabled.
-  ENCODE_BREAKOUT_DISABLED = 0,
-  // encode_breakout is enabled.
-  ENCODE_BREAKOUT_ENABLED = 1,
-  // encode_breakout is enabled with small max_thresh limit.
-  ENCODE_BREAKOUT_LIMITED = 2
-} ENCODE_BREAKOUT_TYPE;
-
 typedef enum {
   NORMAL = 0,
   FOURFIVE = 1,
@@ -223,8 +214,6 @@ typedef struct AV1EncoderConfig {
   int enable_auto_brf;  // (b)ackward (r)ef (f)rame
 #endif                  // CONFIG_EXT_REFS
 
-  int encode_breakout;  // early breakout : for video conf recommend 800
-
   /* Bitfield defining the error resiliency features to enable.
    * Can provide decodable frames after losses in previous
    * frames and decodable partitions after losses in the same frame.
@@ -449,18 +438,8 @@ typedef struct AV1_COMP {
 
   int allow_comp_inter_inter;
 
-  // Default value is 1. From first pass stats, encode_breakout may be disabled.
-  ENCODE_BREAKOUT_TYPE allow_encode_breakout;
-
-  // Get threshold from external input. A suggested threshold is 800 for HD
-  // clips, and 300 for < HD clips.
-  int encode_breakout;
-
   uint8_t *segmentation_map;
 
-  // segment threashold for encode breakout
-  int segment_encode_breakout[MAX_SEGMENTS];
-
   CYCLIC_REFRESH *cyclic_refresh;
   ActiveMap active_map;
 

av1/encoder/speed_features.c

@@ -270,11 +270,6 @@ static void set_rt_speed_feature_framesize_dependent(AV1_COMP *cpi,
       sf->partition_search_breakout_dist_thr = (1 << 23);
     }
   }
-
-  if (speed >= 7) {
-    sf->encode_breakout_thresh =
-        (AOMMIN(cm->width, cm->height) >= 720) ? 800 : 300;
-  }
 }
 
 static void set_rt_speed_feature(AV1_COMP *cpi, SPEED_FEATURES *sf, int speed,
@@ -454,11 +449,6 @@ void av1_set_speed_features_framesize_dependent(AV1_COMP *cpi) {
     sf->adaptive_pred_interp_filter = 0;
   }
 
-  if (cpi->encode_breakout && oxcf->mode == REALTIME &&
-      sf->encode_breakout_thresh > cpi->encode_breakout) {
-    cpi->encode_breakout = sf->encode_breakout_thresh;
-  }
-
   // Check for masked out split cases.
   for (i = 0; i < MAX_REFS; ++i) {
     if (sf->disable_split_mask & (1 << i)) {
@@ -542,7 +532,6 @@ void av1_set_speed_features_framesize_independent(AV1_COMP *cpi) {
   // to FIXED_PARTITION.
   sf->always_this_block_size = BLOCK_16X16;
   sf->search_type_check_frequency = 50;
-  sf->encode_breakout_thresh = 0;
   // Recode loop tolerance %.
   sf->recode_tolerance = 25;
   sf->default_interp_filter = SWITCHABLE;

av1/encoder/speed_features.h

@@ -443,10 +443,6 @@ typedef struct SPEED_FEATURES {
   // time mode speed 6.
   int reuse_inter_pred_sby;
 
-  // This variable sets the encode_breakout threshold. Currently, it is only
-  // enabled in real time mode.
-  int encode_breakout_thresh;
-
   // default interp filter choice
   InterpFilter default_interp_filter;