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Removing the 64-bit part of the range coder.

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This commit is contained in:
Jean-Marc Valin 2008-10-04 21:10:26 -04:00
parent b6a3b0c464
commit 2b08d7a210
5 changed files with 2 additions and 118 deletions
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4
libcelt/bands.c
View file

@ -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;

27
libcelt/entcode.c
View file

@ -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
}

40
libcelt/entdec.c
View file

@ -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;
}
}

25
libcelt/entenc.c
View file

@ -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);
}
}

24
tests/ectest.c
View file

@ -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);