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#ifndef _DECODER_H
#define _DECODER_H
struct decoder_state;
struct decoder_algo {
u_int8_t oversampling_rate;
u_int8_t bits_per_sampled_char;
u_int32_t bytesample_mask;
int (*decode_sample)(const u_int32_t sample, u_int8_t *data);
u_int32_t (*get_next_bytesample)(struct decoder_state *st, u_int8_t *parity_sample);
};
struct decoder_state {
struct decoder_algo *algo;
u_int8_t bit_ofs;
const char *buf;
const u_int32_t *buf32;
};
extern int decoder_register(int algnum, struct decoder_algo *algo);
extern int decoder_decode(u_int8_t algo, const char *sample_buf,
int sample_buf_size, unsigned char *data_buf);
extern void decoder_init(void);
#define DECODER_MILLER 0
#define DECODER_NRZL 1
#define DECODER_NUM_ALGOS 2
extern struct decoder_algo nrzl_decoder;
extern struct decoder_algo miller_decoder;
#endif
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