mirror of https://github.com/wb2osz/direwolf.git
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
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#ifndef RRBB_H
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#define RRBB_H
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/* Try something new in version 1.0 */
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/* Get back to this later. Disable for now. */
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//#define SLICENDICE 1
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typedef short slice_t;
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#ifdef RRBB_C
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/*
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* Maximum size (in bytes) of an AX.25 frame including the 2 octet FCS.
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*/
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#define MAX_FRAME_LEN ((AX25_MAX_PACKET_LEN) + 2)
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/*
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* Maximum number of bits in AX.25 frame excluding the flags.
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* Adequate for extreme case of bit stuffing after every 5 bits
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* which could never happen.
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*/
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#define MAX_NUM_BITS (MAX_FRAME_LEN * 8 * 6 / 5)
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#define SOI 32
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typedef struct rrbb_s {
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int magic1;
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struct rrbb_s* nextp; /* Next pointer to maintain a queue. */
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int chan; /* Radio channel from which it was received. */
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int subchan; /* Which modem when more than one per channel. */
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int audio_level; /* Received audio level at time of frame capture. */
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unsigned int len; /* Current number of samples in array. */
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int is_scrambled; /* Is data scrambled G3RUH / K9NG style? */
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int descram_state; /* Descrambler state before first data bit of frame. */
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#if SLICENDICE
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slice_t slice_val;
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slice_t data[MAX_NUM_BITS];
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#else
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unsigned int data[(MAX_NUM_BITS+SOI-1)/SOI];
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#endif
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int magic2;
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} *rrbb_t;
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#else
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/* Hide the implementation. */
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typedef void *rrbb_t;
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#endif
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rrbb_t rrbb_new (int chan, int subchan, int is_scrambled, int descram_state);
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void rrbb_clear (rrbb_t b, int is_scrambled, int descram_state);
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#if SLICENDICE
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void rrbb2_append_bit (rrbb_t b, float val);
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#else
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void rrbb_append_bit (rrbb_t b, int val);
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#endif
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void rrbb_chop8 (rrbb_t b);
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int rrbb_get_len (rrbb_t b);
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#if SLICENDICE
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void rrbb_set_slice_val (rrbb_t b, slice_t slice_val);
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#endif
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int rrbb_get_bit (rrbb_t b, unsigned int ind);
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//void rrbb_flip_bit (rrbb_t b, unsigned int ind);
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void rrbb_delete (rrbb_t b);
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void rrbb_set_nextp (rrbb_t b, rrbb_t np);
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rrbb_t rrbb_get_nextp (rrbb_t b);
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int rrbb_get_chan (rrbb_t b);
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int rrbb_get_subchan (rrbb_t b);
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void rrbb_set_audio_level (rrbb_t b, int a);
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int rrbb_get_audio_level (rrbb_t b);
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int rrbb_get_is_scrambled (rrbb_t b);
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int rrbb_get_descram_state (rrbb_t b);
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#endif |