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/* egprs_rlc_compression.h
* Routines for EGPRS RLC bitmap compression handling
*/
#pragma once
#include <gprs_rlcmac.h>
#include <gprs_debug.h>
extern "C" {
#include <osmocom/core/talloc.h>
}
#include <arpa/inet.h>
#include <errno.h>
#include <string.h>
#define MAX_CDWDTBL_LEN 79 /* total number of codewords */
#define BITS_TO_BYTES(X) ((X ? (X/8):0)+1)
#define MOD8(X) (((X)+8) & (0x07))
typedef struct node {
struct node *left;
struct node *right;
int run_length;
} Node;
extern const char *one_run_len_code_list[MAX_CDWDTBL_LEN];
extern const char *zero_run_len_code_list[MAX_CDWDTBL_LEN];
extern void *tall_pcu_ctx;
int decompress_crbb(int8_t compress_bmap_len, uint8_t clr_code_bit,
const uint8_t *orig_buf, bitvec *dest);
/* Creating singleton class
*/
class egprs_compress
{
static egprs_compress *s_instance;
egprs_compress()
{
if (decode_tree_init() < 0) {
fprintf(stderr, "Error initializing tree\n");
exit(1);
}
}
Node *create_tree_node(void *);
void build_codeword(Node *root, const char *cdwd[]);
~egprs_compress();
public:
Node *ones_list;
Node *zeros_list;
int decode_tree_init(void);
static egprs_compress *instance()
{
if (!s_instance)
s_instance = new egprs_compress;
return s_instance;
}
};
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