30 #ifndef AVCODEC_GOLOMB_H
31 #define AVCODEC_GOLOMB_H
38 #define INVALID_VLC 0x80000000
61 if (buf >= (1 << 27)) {
68 int log = 2 *
av_log2(buf) - 31;
119 if (buf & 0xAA800000) {
187 if (buf >= (1 << 27)) {
194 int log = 2 *
av_log2(buf) - 31;
214 buf = (buf + 1) >> 1;
229 if (buf & 0xAA800000) {
241 if ((buf & 0xAAAAAAAA) == 0)
244 for (log = 31; (buf & 0x80000000) == 0; log--)
245 buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
250 return (
signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
264 ret = (ret ^ buf) - buf;
286 if (log > 31 - limit) {
288 buf += (30 - log) << k;
302 return buf + limit - 1;
324 buf += (30 - log) << k;
346 return buf + (i << k);
347 }
else if (i == limit - 1) {
382 return (v >> 1) ^ -(v & 1);
407 static inline int get_ue(
GetBitContext *s,
const char *file,
const char *func,
416 print_bin(bits, len);
419 bits, len, i, pos, file, func, line);
424 static inline int get_se(
GetBitContext *s,
const char *file,
const char *func,
433 print_bin(bits, len);
436 bits, len, i, pos, file, func, line);
441 static inline int get_te(
GetBitContext *s,
int r,
char *file,
const char *func,
450 print_bin(bits, len);
453 bits, len, i, pos, file, func, line);
458 #define get_ue_golomb(a) get_ue(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
459 #define get_se_golomb(a) get_se(a, __FILE__, __PRETTY_FUNCTION__, __LINE__)
460 #define get_te_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
461 #define get_te0_golomb(a, r) get_te(a, r, __FILE__, __PRETTY_FUNCTION__, __LINE__)
533 put_bits(pb, e + k + 1, (1 << k) + (i & ((1 << k) - 1)));
535 put_bits(pb, limit + esc_len, i - limit + 1);
542 int limit,
int esc_len)
585 int limit,
int esc_len)