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pcu: Add bitvec_write_field_lh 

While the bitvec functions from libosmocore support LH encoding, the
C++ wrapper does not.

Add a bitvec_write_field_lh function that is similar to
bitvec_write_field, but writes L and H instead of ZERO and ONE.

Sponsored-by: On-Waves ehf
This commit is contained in:
Jacob Erlbeck 2016-02-01 13:26:22 +01:00
parent 9876a3ba5d
commit 4e7424d47b
2 changed files with 19 additions and 0 deletions
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18
src/bitvector.cpp
View File

@ -117,3 +117,21 @@ int bitvec_write_field(struct bitvec *bv, unsigned& write_index, uint64_t val, u
write_index += len;
return 0;
}
int bitvec_write_field_lh(struct bitvec *bv, unsigned& write_index,
uint64_t val, unsigned len)
{
unsigned int i;
int rc;
bv->cur_bit = write_index;
for (i = 0; i < len; i++) {
bit_value bit = L;
if (val & ((uint64_t)1 << (len - i - 1)))
bit = H;
rc = bitvec_set_bit(bv, bit);
if (rc)
return rc;
}
write_index += len;
return 0;
}

1
src/bitvector.h
View File

@ -39,6 +39,7 @@ unsigned int bitvec_pack(struct bitvec *bv, uint8_t *buffer);
unsigned int bitvec_unpack(struct bitvec *bv, uint8_t *buffer);
uint64_t bitvec_read_field(struct bitvec *bv, unsigned& read_index, unsigned len);
int bitvec_write_field(struct bitvec *bv, unsigned& write_index, uint64_t val, unsigned len);
int bitvec_write_field_lh(struct bitvec *bv, unsigned& write_index, uint64_t val, unsigned len);
/*! }@ */