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srsLTE
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Moved bit interleaver to bit utils

This commit is contained in:
ismagom 2015-09-14 11:21:54 +02:00
parent d2a17a631b
commit 7c09f79911
2 changed files with 20 additions and 10 deletions
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12
srslte/lib/fec/src/turbocoder.c
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@ -43,7 +43,7 @@
uint8_t tcod_lut_next_state[188][8][256];
uint8_t tcod_lut_output[188][8][256];
uint16_t tcod_per_fw[188][6114];
uint32_t tcod_per_fw[188][6114];
int srslte_tcod_init(srslte_tcod_t *h, uint32_t max_long_cb) {
@ -198,15 +198,7 @@ int srslte_tcod_encode_lut(srslte_tcod_t *h, uint8_t *input, uint8_t *output, ui
}
/* Interleave input */
for (uint32_t i=0;i<long_cb/8;i++) {
h->temp[i] = 0;
for (uint32_t j=0;j<8;j++) {
uint32_t i_p = tcod_per_fw[len_idx][i*8+j];
if (input[i_p/8] & (1<<(7-i_p%8))) {
h->temp[i] |= 1<<(7-j);
}
}
}
srslte_bit_interleave(input, h->temp, tcod_per_fw[len_idx], long_cb);
/* Parity bits for the 2nd constituent encoders */
uint8_t state1 = 0;

18
srslte/lib/utils/src/bit.c
View File

@ -31,6 +31,24 @@
#include "srslte/utils/bit.h"
void srslte_bit_interleave(uint8_t *input, uint8_t *output, uint32_t *interleaver, uint32_t nof_bits) {
for (uint32_t i=0;i<nof_bits/8;i++) {
output[i] = 0;
for (uint32_t j=0;j<8;j++) {
uint32_t i_p = interleaver[i*8+j];
if (input[i_p/8] & (1<<(7-i_p%8))) {
output[i] |= 1<<(7-j);
}
}
}
for (uint32_t j=0;j<nof_bits%8;j++) {
uint32_t i_p = interleaver[(nof_bits/8)*8+j];
if (input[i_p/8] & (1<<(7-i_p%8))) {
output[nof_bits/8] |= 1<<(7-j);
}
}
}
void srslte_bit_unpack_vector(uint8_t *bits_unpacked, uint8_t *bits_packed, int nof_bits)
{
uint32_t i, nbytes;