Cross Reference: /external/libopus/celt/entdec.c

Lines Matching refs:_this
91 static int ec_read_byte(ec_dec *_this){
92   return _this->offs<_this->storage?_this->buf[_this->offs++]:0;
95 static int ec_read_byte_from_end(ec_dec *_this){
96   return _this->end_offs<_this->storage?
97    _this->buf[_this->storage-++(_this->end_offs)]:0;
102 static void ec_dec_normalize(ec_dec *_this){
104   while(_this->rng<=EC_CODE_BOT){
106     _this->nbits_total+=EC_SYM_BITS;
107     _this->rng<<=EC_SYM_BITS;
109     sym=_this->rem;
111     _this->rem=ec_read_byte(_this);
113     sym=(sym<<EC_SYM_BITS|_this->rem)>>(EC_SYM_BITS-EC_CODE_EXTRA);
115     _this->val=((_this->val<<EC_SYM_BITS)+(EC_SYM_MAX&~sym))&(EC_CODE_TOP-1);
119 void ec_dec_init(ec_dec *_this,unsigned char *_buf,opus_uint32 _storage){
120   _this->buf=_buf;
121   _this->storage=_storage;
122   _this->end_offs=0;
123   _this->end_window=0;
124   _this->nend_bits=0;
128   _this->nbits_total=EC_CODE_BITS+1
130   _this->offs=0;
131   _this->rng=1U<<EC_CODE_EXTRA;
132   _this->rem=ec_read_byte(_this);
133   _this->val=_this->rng-1-(_this->rem>>(EC_SYM_BITS-EC_CODE_EXTRA));
134   _this->error=0;
136   ec_dec_normalize(_this);
139 unsigned ec_decode(ec_dec *_this,unsigned _ft){
141   _this->ext=_this->rng/_ft;
142   s=(unsigned)(_this->val/_this->ext);
146 unsigned ec_decode_bin(ec_dec *_this,unsigned _bits){
148    _this->ext=_this->rng>>_bits;
149    s=(unsigned)(_this->val/_this->ext);
153 void ec_dec_update(ec_dec *_this,unsigned _fl,unsigned _fh,unsigned _ft){
155   s=IMUL32(_this->ext,_ft-_fh);
156   _this->val-=s;
157   _this->rng=_fl>0?IMUL32(_this->ext,_fh-_fl):_this->rng-s;
158   ec_dec_normalize(_this);
162 int ec_dec_bit_logp(ec_dec *_this,unsigned _logp){
167   r=_this->rng;
168   d=_this->val;
171   if(!ret)_this->val=d-s;
172   _this->rng=ret?s:r-s;
173   ec_dec_normalize(_this);
177 int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb){
183   s=_this->rng;
184   d=_this->val;
192   _this->val=d-s;
193   _this->rng=t-s;
194   ec_dec_normalize(_this);
198 opus_uint32 ec_dec_uint(ec_dec *_this,opus_uint32 _ft){
210     s=ec_decode(_this,ft);
211     ec_dec_update(_this,s,s+1,ft);
212     t=(opus_uint32)s<<ftb|ec_dec_bits(_this,ftb);
214     _this->error=1;
219     s=ec_decode(_this,(unsigned)_ft);
220     ec_dec_update(_this,s,s+1,(unsigned)_ft);
225 opus_uint32 ec_dec_bits(ec_dec *_this,unsigned _bits){
229   window=_this->end_window;
230   available=_this->nend_bits;
233       window|=(ec_window)ec_read_byte_from_end(_this)<<available;
241   _this->end_window=window;
242   _this->nend_bits=available;
243   _this->nbits_total+=_bits;