From 2b08d7a210f0d280fad9810f5b7f1fdbde1fe265 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date: Sat, 4 Oct 2008 21:10:26 -0400
Subject: Removing the 64-bit part of the range coder.

---
 libcelt/bands.c   |  4 ++--
 libcelt/entcode.c | 27 ---------------------------
 libcelt/entdec.c  | 40 ----------------------------------------
 libcelt/entenc.c  | 25 -------------------------
 tests/ectest.c    | 24 ------------------------
 5 files changed, 2 insertions(+), 118 deletions(-)

diff --git a/libcelt/bands.c b/libcelt/bands.c
index 3cb6a13..6a642b3 100644
--- a/libcelt/bands.c
+++ b/libcelt/bands.c
@@ -355,7 +355,7 @@ void quant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, ce
       int tell;
       int q;
       celt_word16_t n;
-      celt_int16_t * const *BPbits;
+      const celt_int16_t * const *BPbits;
       
       int curr_balance, curr_bits;
       
@@ -440,7 +440,7 @@ void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P,
       int tell;
       int q;
       celt_word16_t n;
-      celt_int16_t * const *BPbits;
+      const celt_int16_t * const *BPbits;
       
       int curr_balance, curr_bits;
       
diff --git a/libcelt/entcode.c b/libcelt/entcode.c
index bbb77fa..0f08d57 100644
--- a/libcelt/entcode.c
+++ b/libcelt/entcode.c
@@ -37,30 +37,3 @@ int ec_ilog(ec_uint32 _v){
 #endif
 }
 
-int ec_ilog64(ec_uint64 _v){
-#if defined(EC_CLZ64)
-  return EC_CLZ64_0-EC_CLZ64(_v);
-#else
-  ec_uint32 v;
-  int       ret;
-  int       m;
-  ret=!!_v;
-  m=!!(_v&((ec_uint64)0xFFFFFFFF)<<32)<<5;
-  v=(ec_uint32)(_v>>m);
-  ret|=m;
-  m=!!(v&0xFFFF0000)<<4;
-  v>>=m;
-  ret|=m;
-  m=!!(v&0xFF00)<<3;
-  v>>=m;
-  ret|=m;
-  m=!!(v&0xF0)<<2;
-  v>>=m;
-  ret|=m;
-  m=!!(v&0xC)<<1;
-  v>>=m;
-  ret|=m;
-  ret+=!!(v&0x2);
-  return ret;
-#endif
-}
diff --git a/libcelt/entdec.c b/libcelt/entdec.c
index 3dee569..555543f 100644
--- a/libcelt/entdec.c
+++ b/libcelt/entdec.c
@@ -100,16 +100,6 @@ ec_uint32 ec_dec_bits(ec_dec *_this,int _ftb){
   return t;
 }
 
-ec_uint64 ec_dec_bits64(ec_dec *_this,int _ftb){
-  ec_uint32 t;
-  if(_ftb>32){
-    t=ec_dec_bits(_this,_ftb-32);
-    _ftb=32;
-  }
-  else t=0;
-  return (ec_uint64)t<<32|ec_dec_bits(_this,_ftb);
-}
-
 ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft){
   ec_uint32 t;
   unsigned  ft;
@@ -139,33 +129,3 @@ ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft){
     return t;
   }
 }
-
-ec_uint64 ec_dec_uint64(ec_dec *_this,ec_uint64 _ft){
-  ec_uint64 t;
-  unsigned  ft;
-  unsigned  s;
-  int       ftb;
-  t=0;
-  _ft--;
-  ftb=EC_ILOG64(_ft);
-  if(ftb>EC_UNIT_BITS){
-    ftb-=EC_UNIT_BITS;
-    ft=(unsigned)(_ft>>ftb)+1;
-    s=ec_decode(_this,ft);
-    ec_dec_update(_this,s,s+1,ft);
-    t=t<<EC_UNIT_BITS|s;
-    t = t<<ftb|ec_dec_bits64(_this,ftb);
-    if (t>_ft)
-    {
-       celt_notify("uint decode error");
-       t = _ft;
-    }
-    return t;
-  } else {
-    _ft++;
-    s=ec_decode(_this,(unsigned)_ft);
-    ec_dec_update(_this,s,s+1,(unsigned)_ft);
-    t=t<<ftb|s;
-    return t;
-  }
-}
diff --git a/libcelt/entenc.c b/libcelt/entenc.c
index 7859f63..46e07d4 100644
--- a/libcelt/entenc.c
+++ b/libcelt/entenc.c
@@ -77,15 +77,6 @@ void ec_enc_bits(ec_enc *_this,ec_uint32 _fl,int _ftb){
   ec_encode_bin(_this,fl,fl+1,_ftb);
 }
 
-void ec_enc_bits64(ec_enc *_this,ec_uint64 _fl,int _ftb){
-  if(_ftb>32){
-    ec_enc_bits(_this,(ec_uint32)(_fl>>32),_ftb-32);
-    _ftb=32;
-    _fl&=0xFFFFFFFF;
-  }
-  ec_enc_bits(_this,(ec_uint32)_fl,_ftb);
-}
-
 void ec_enc_uint(ec_enc *_this,ec_uint32 _fl,ec_uint32 _ft){
   unsigned  ft;
   unsigned  fl;
@@ -103,19 +94,3 @@ void ec_enc_uint(ec_enc *_this,ec_uint32 _fl,ec_uint32 _ft){
   }
 }
 
-void ec_enc_uint64(ec_enc *_this,ec_uint64 _fl,ec_uint64 _ft){
-  unsigned  ft;
-  unsigned  fl;
-  int       ftb;
-  _ft--;
-  ftb=EC_ILOG64(_ft)&-!!_ft;
-  if(ftb>EC_UNIT_BITS){
-    ftb-=EC_UNIT_BITS;
-    ft=(unsigned)(_ft>>ftb)+1;
-    fl=(unsigned)(_fl>>ftb);
-    ec_encode(_this,fl,fl+1,ft);
-    ec_enc_bits64(_this,_fl,ftb);
-  } else {
-    ec_encode(_this,_fl,_fl+1,_ft+1);
-  }
-}
diff --git a/tests/ectest.c b/tests/ectest.c
index 93441df..b3fc220 100644
--- a/tests/ectest.c
+++ b/tests/ectest.c
@@ -17,7 +17,6 @@ int main(int _argc,char **_argv){
   ec_byte_buffer buf;
   ec_enc         enc;
   ec_dec         dec;
-  ec_uint64      sym64;
   long           nbits;
   long           nbits2;
   double         entropy;
@@ -36,8 +35,6 @@ int main(int _argc,char **_argv){
     for(i=0;i<ft;i++){
       entropy+=log(ft)*M_LOG2E;
       ec_enc_uint(&enc,i,ft);
-      entropy+=log(ft)*M_LOG2E+30;
-      ec_enc_uint64(&enc,(ec_uint64)i<<30|i,(ec_uint64)ft<<30);
     }
   }
   /*Testing encoding of raw bit values.*/
@@ -52,15 +49,6 @@ int main(int _argc,char **_argv){
          nbits2-nbits,ftb);
         ret=-1;
       }
-      entropy+=ftb+30;
-      nbits=nbits2;
-      ec_enc_bits64(&enc,(ec_uint64)i<<30|i,ftb+30);
-      nbits2=ec_enc_tell(&enc,0);
-      if(nbits2-nbits!=ftb+30){
-        fprintf(stderr,"Used %li bits to encode %i bits directly.\n",
-         nbits2-nbits,ftb+30);
-        ret=-1;
-      }
     }
   }
   nbits=ec_enc_tell(&enc,4);
@@ -78,12 +66,6 @@ int main(int _argc,char **_argv){
         fprintf(stderr,"Decoded %i instead of %i with ft of %i.\n",sym,i,ft);
         ret=-1;
       }
-      sym64=ec_dec_uint64(&dec,(ec_uint64)ft<<30);
-      if(sym64!=((ec_uint64)i<<30|i)){
-        fprintf(stderr,"Decoded %lu instead of %lu with ft of %lu.\n",sym64,
-         (ec_uint64)i<<30|i,(ec_uint64)ft<<30);
-        ret=-1;
-      }
     }
   }
   for(ftb=0;ftb<16;ftb++){
@@ -93,12 +75,6 @@ int main(int _argc,char **_argv){
         fprintf(stderr,"Decoded %i instead of %i with ftb of %i.\n",sym,i,ftb);
         ret=-1;
       }
-      sym64=ec_dec_bits64(&dec,ftb+30);
-      if(sym64!=((ec_uint64)i<<30|i)){
-        fprintf(stderr,"Decoded %lu instead of %lu with ftb of %i.\n",
-         sym64,(ec_uint64)i<<30|i,ftb+30);
-        ret=-1;
-      }
     }
   }
   nbits2=ec_dec_tell(&dec,4);
-- 
cgit v1.2.3