122 int len,
int start_state);
128 const sbit_t *input,
int n);
132 ubit_t *output,
int has_flush,
int end_state);
const struct osmo_conv_code * code
for which code?
Definition: conv.h:81
int8_t sbit_t
soft bit with value (-127...127), as commonly used in communications receivers such as [viterbi] deco...
Definition: bits.h:21
int p_idx
Current puncture index.
Definition: conv.h:83
int osmo_conv_get_output_length(const struct osmo_conv_code *code, int len)
Definition: conv.c:54
enum osmo_conv_term term
Termination type.
Definition: conv.h:57
unsigned int * ae
accumulated error
Definition: conv.h:115
int osmo_conv_get_input_length(const struct osmo_conv_code *code, int len)
Definition: conv.c:48
convolutional encoder state
Definition: conv.h:80
void osmo_conv_decode_rewind(struct osmo_conv_decoder *decoder)
Definition: conv.c:295
const uint8_t * next_term_state
Flush termination state.
Definition: conv.h:63
void osmo_conv_encode_init(struct osmo_conv_encoder *encoder, const struct osmo_conv_code *code)
Initialize a convolutional encoder.
Definition: conv.c:86
void osmo_conv_decode_reset(struct osmo_conv_decoder *decoder, int start_state)
Definition: conv.c:274
const struct osmo_conv_code * code
for which code?
Definition: conv.h:106
convolutional decoder state
Definition: conv.h:105
const uint8_t(* next_output)[2]
Next output array.
Definition: conv.h:59
int osmo_conv_decode(const struct osmo_conv_code *code, const sbit_t *input, ubit_t *output)
All-in-one convolutional decoding function.
Definition: conv.c:607
void osmo_conv_decode_init(struct osmo_conv_decoder *decoder, const struct osmo_conv_code *code, int len, int start_state)
Definition: conv.c:246
structure describing a given convolutional code
Definition: conv.h:52
uint8_t state
Current state.
Definition: conv.h:84
void osmo_conv_decode_deinit(struct osmo_conv_decoder *decoder)
Definition: conv.c:315
Direct truncation.
Definition: conv.h:42
int osmo_conv_encode_raw(struct osmo_conv_encoder *encoder, const ubit_t *input, ubit_t *output, int n)
Definition: conv.c:137
Tail biting.
Definition: conv.h:43
int o_idx
output index
Definition: conv.h:112
int p_idx
puncture index
Definition: conv.h:113
const uint8_t(* next_state)[2]
Next state array.
Definition: conv.h:60
osmo_conv_term
possibe termination types
Definition: conv.h:40
int N
Inverse of code rate.
Definition: conv.h:53
const int * puncture
Punctured bits indexes.
Definition: conv.h:65
int osmo_conv_decode_scan(struct osmo_conv_decoder *decoder, const sbit_t *input, int n)
Definition: conv.c:325
int osmo_conv_encode_flush(struct osmo_conv_encoder *encoder, ubit_t *output)
Definition: conv.c:166
void osmo_conv_encode_load_state(struct osmo_conv_encoder *encoder, const ubit_t *input)
Definition: conv.c:94
int osmo_conv_encode(const struct osmo_conv_code *code, const ubit_t *input, ubit_t *output)
All-in-one convolutional encoding function.
Definition: conv.c:212
int K
Constraint length.
Definition: conv.h:54
Osmocom bit level support code.
Flush encoder state.
Definition: conv.h:41
int len
of data bits
Definition: conv.h:55
const uint8_t * next_term_output
Flush termination output.
Definition: conv.h:62
unsigned int * ae_next
next accumulated error (tmp in scan)
Definition: conv.h:116
int osmo_conv_decode_get_output(struct osmo_conv_decoder *decoder, ubit_t *output, int has_flush, int end_state)
Definition: conv.c:531
uint8_t * state_history
state history [len][n_states]
Definition: conv.h:117
int len
Max o_idx (excl.
Definition: conv.h:110
uint8_t ubit_t
unpacked bit (0 or 1): 1 bit per byte
Definition: bits.h:24
int osmo_conv_decode_flush(struct osmo_conv_decoder *decoder, const sbit_t *input)
Definition: conv.c:426
int i_idx
Next input bit index.
Definition: conv.h:82
int n_states
number of states
Definition: conv.h:108