Adding upstream version 1.4.upstream/1.4

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 15 insertions, 23 deletions

diff --git a/encoder.h b/encoder.h
index 90fa91c..122d7fd 100644
--- a/encoder.h
+++ b/encoder.h
@@ -178,9 +178,9 @@ static inline int price_symbol_reversed( const Bit_model bm[], int symbol,
   for( i = num_bits; i > 0; --i )
     {
     const int bit = symbol & 1;
-    symbol >>= 1;
     price += price_bit( bm[model], bit );
     model = ( model << 1 ) | bit;
+    symbol >>= 1;
     }
   return price;
   }
@@ -472,11 +472,7 @@ static inline void Re_encode_matched( struct Range_encoder * const renc,
 
 struct Len_encoder
   {
-  Bit_model choice1;
-  Bit_model choice2;
-  Bit_model bm_low[pos_states][len_low_symbols];
-  Bit_model bm_mid[pos_states][len_mid_symbols];
-  Bit_model bm_high[len_high_symbols];
+  struct Len_model lm;
   int prices[pos_states][max_len_symbols];
   int len_symbols;
   int counters[pos_states];
@@ -486,21 +482,21 @@ static void Lee_update_prices( struct Len_encoder * const len_encoder,
                                const int pos_state )
   {
   int * const pps = len_encoder->prices[pos_state];
-  int tmp = price0( len_encoder->choice1 );
+  int tmp = price0( len_encoder->lm.choice1 );
   int len = 0;
   for( ; len < len_low_symbols && len < len_encoder->len_symbols; ++len )
     pps[len] = tmp +
-               price_symbol( len_encoder->bm_low[pos_state], len, len_low_bits );
-  tmp = price1( len_encoder->choice1 );
+               price_symbol( len_encoder->lm.bm_low[pos_state], len, len_low_bits );
+  tmp = price1( len_encoder->lm.choice1 );
   for( ; len < len_low_symbols + len_mid_symbols && len < len_encoder->len_symbols; ++len )
-    pps[len] = tmp + price0( len_encoder->choice2 ) +
-               price_symbol( len_encoder->bm_mid[pos_state], len - len_low_symbols, len_mid_bits );
+    pps[len] = tmp + price0( len_encoder->lm.choice2 ) +
+               price_symbol( len_encoder->lm.bm_mid[pos_state], len - len_low_symbols, len_mid_bits );
   for( ; len < len_encoder->len_symbols; ++len )
     /* using 4 slots per value makes "Lee_price" faster */
     len_encoder->prices[3][len] = len_encoder->prices[2][len] =
     len_encoder->prices[1][len] = len_encoder->prices[0][len] =
-      tmp + price1( len_encoder->choice2 ) +
-      price_symbol( len_encoder->bm_high, len - len_low_symbols - len_mid_symbols, len_high_bits );
+      tmp + price1( len_encoder->lm.choice2 ) +
+      price_symbol( len_encoder->lm.bm_high, len - len_low_symbols - len_mid_symbols, len_high_bits );
   len_encoder->counters[pos_state] = len_encoder->len_symbols;
   }
 
@@ -508,11 +504,7 @@ static void Lee_init( struct Len_encoder * const len_encoder,
                       const int match_len_limit )
   {
   int i;
-  Bm_init( &len_encoder->choice1 );
-  Bm_init( &len_encoder->choice2 );
-  Bm_array_init( len_encoder->bm_low[0], pos_states * len_low_symbols );
-  Bm_array_init( len_encoder->bm_mid[0], pos_states * len_mid_symbols );
-  Bm_array_init( len_encoder->bm_high, len_high_symbols );
+  Lm_init( &len_encoder->lm );
   len_encoder->len_symbols = match_len_limit + 1 - min_match_len;
   for( i = 0; i < pos_states; ++i ) Lee_update_prices( len_encoder, i );
   }
@@ -599,8 +591,8 @@ struct LZ_encoder
 
   struct Matchfinder * matchfinder;
   struct Range_encoder range_encoder;
-  struct Len_encoder len_encoder;
-  struct Len_encoder rep_match_len_encoder;
+  struct Len_encoder match_len_encoder;
+  struct Len_encoder rep_len_encoder;
 
   int num_dis_slots;
   int rep_distances[num_rep_distances];
@@ -677,7 +669,7 @@ static inline int LZe_price_rep0_len( const struct LZ_encoder * const encoder,
                                       const State state, const int pos_state )
   {
   return LZe_price_rep( encoder, 0, state, pos_state ) +
-         Lee_price( &encoder->rep_match_len_encoder, len, pos_state );
+         Lee_price( &encoder->rep_len_encoder, len, pos_state );
   }
 
 static inline int LZe_price_dis( const struct LZ_encoder * const encoder,
@@ -694,7 +686,7 @@ static inline int LZe_price_pair( const struct LZ_encoder * const encoder,
                                   const int dis, const int len,
                                   const int pos_state )
   {
-  return Lee_price( &encoder->len_encoder, len, pos_state ) +
+  return Lee_price( &encoder->match_len_encoder, len, pos_state ) +
          LZe_price_dis( encoder, dis, get_dis_state( len ) );
   }
 
@@ -725,7 +717,7 @@ static inline void LZe_encode_pair( struct LZ_encoder * const encoder,
                                     const int pos_state )
   {
   const int dis_slot = get_slot( dis );
-  Lee_encode( &encoder->len_encoder, &encoder->range_encoder, len, pos_state );
+  Lee_encode( &encoder->match_len_encoder, &encoder->range_encoder, len, pos_state );
   Re_encode_tree( &encoder->range_encoder,
                   encoder->bm_dis_slot[get_dis_state(len)],
                   dis_slot, dis_slot_bits );