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/* egprs_rlc_compression.h
* Routines for EGPRS RLC bitmap compression handling
*/
#pragma once
#define BITS_TO_BYTES(X) (((X) ? (X)/8 : 0) + 1)
#define MOD8(X) ((X) & (0x07))
typedef struct egprs_compress_node{
struct egprs_compress_node *left;
struct egprs_compress_node *right;
int run_length;
} egprs_compress_node;
/* Singleton to manage the EGPRS compression algorithm. */
class egprs_compress
{
public:
static int decompress_crbb(int8_t compress_bmap_len,
bool color_code_bit, const uint8_t *orig_buf,
bitvec *dest);
private:
static egprs_compress *s_instance;
egprs_compress_node *ones_list;
egprs_compress_node *zeros_list;
void decode_tree_init(void);
static egprs_compress *instance()
{
if (!s_instance)
s_instance = new egprs_compress;
return s_instance;
}
egprs_compress()
{
decode_tree_init();
}
egprs_compress_node *create_tree_node(void *);
void build_codewords(egprs_compress_node *root, const char *cdwd[]);
/* singleton class, so this private destructor is left unimplemented. */
~egprs_compress();
};
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