Pravin Kumarvel | 0a4a6c1 | 2016-10-17 11:00:57 +0530 | [diff] [blame] | 1 | /* egprs_rlc_compression.h |
| 2 | * Routines for EGPRS RLC bitmap compression handling |
| 3 | */ |
| 4 | |
| 5 | #pragma once |
| 6 | |
| 7 | struct egprs_compress_node; |
sivasankari | 8adfcd0 | 2017-01-16 15:41:21 +0530 | [diff] [blame] | 8 | #define MOD64(X) (((X) + 64) & 0x3F) |
Pravin Kumarvel | 0a4a6c1 | 2016-10-17 11:00:57 +0530 | [diff] [blame] | 9 | |
| 10 | /* Singleton to manage the EGPRS compression algorithm. */ |
| 11 | class egprs_compress |
| 12 | { |
| 13 | public: |
| 14 | static int decompress_crbb(int8_t compress_bmap_len, |
| 15 | bool start, const uint8_t *orig_buf, |
| 16 | bitvec *dest); |
| 17 | egprs_compress(); |
sivasankari | 8adfcd0 | 2017-01-16 15:41:21 +0530 | [diff] [blame] | 18 | int osmo_t4_compress(struct bitvec *bv); |
| 19 | static int compress_rbb(struct bitvec *urbb_vec, struct bitvec *crbb_vec, |
Alexander Couzens | 6d73205 | 2019-06-16 16:13:42 +0200 | [diff] [blame] | 20 | uint8_t *uclen_crbb, uint8_t max_bits); |
Pravin Kumarvel | 0a4a6c1 | 2016-10-17 11:00:57 +0530 | [diff] [blame] | 21 | |
| 22 | private: |
| 23 | egprs_compress_node *ones_list; |
| 24 | egprs_compress_node *zeros_list; |
| 25 | |
| 26 | void decode_tree_init(void); |
| 27 | static egprs_compress *s_instance; |
| 28 | static egprs_compress*instance(); |
| 29 | egprs_compress_node *create_tree_node(void *); |
| 30 | void build_codewords(egprs_compress_node *root, const char *cdwd[]); |
| 31 | /* singleton class, so this private destructor is left unimplemented. */ |
| 32 | ~egprs_compress(); |
| 33 | }; |