30 #ifndef AVCODEC_GOLOMB_H
31 #define AVCODEC_GOLOMB_H
37 #define INVALID_VLC 0x80000000
68 log= 2*av_log2(buf) - 31;
86 log = 31 - av_log2(buf);
151 if(range==1)
return 0;
152 else if(range==2)
return get_bits1(gb)^1;
185 log= 2*av_log2(buf) - 31;
191 if(buf&1) buf= -(buf>>1);
217 if((buf & 0xAAAAAAAA) == 0)
220 for(log=31; (buf & 0x80000000) == 0; log--){
221 buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
227 return (
signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
242 ret = (ret ^ buf) - buf;
278 return buf + limit - 1;
320 }
else if(i == limit - 1){
338 if (v&1)
return v>>1;
349 return (v>>1) ^ -(v&1);
375 static inline int get_ue(
GetBitContext *s,
char *file,
const char *func,
int line){
382 print_bin(bits, len);
389 static inline int get_se(
GetBitContext *s,
char *file,
const char *func,
int line){
396 print_bin(bits, len);
403 static inline int get_te(
GetBitContext *s,
int r,
char *file,
const char *func,
int line){
410 print_bin(bits, len);
417 #define get_ue_golomb(a) get_ue(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
418 #define get_se_golomb(a) get_se(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
419 #define get_te_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
420 #define get_te0_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
487 put_bits(pb, e + k + 1, (1<<k) + (i&((1<<k)-1)));
489 put_bits(pb, limit + esc_len, i - limit + 1);