int srslte_softbuffer_rx_init(srslte_softbuffer_rx_t *q, uint32_t nof_prb) {
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL) {
ret = SRSLTE_ERROR;
bzero(q, sizeof(srslte_softbuffer_rx_t));
ret = srslte_ra_tbs_from_idx(26, nof_prb);
if (ret != SRSLTE_ERROR) {
q->max_cb = (uint32_t) ret / (SRSLTE_TCOD_MAX_LEN_CB - 24) + 1;
q->buffer_f = srslte_vec_malloc(sizeof(int16_t*) * q->max_cb);
if (!q->buffer_f) {
perror("malloc");
return SRSLTE_ERROR;
}
// FIXME: Use HARQ buffer limitation based on UE category
for (uint32_t i=0;i<q->max_cb;i++) {
q->buffer_f[i] = srslte_vec_malloc(sizeof(int16_t) * SOFTBUFFER_SIZE);
if (!q->buffer_f[i]) {
perror("malloc");
return SRSLTE_ERROR;
}
}
srslte_softbuffer_rx_reset(q);
ret = SRSLTE_SUCCESS;
}
}
return ret;
}
int srslte_ue_dl_decode_rnti_rv_packet(srslte_ue_dl_t *q, srslte_dci_msg_t *dci_msg, uint8_t *data,
uint32_t cfi, uint32_t sf_idx, uint16_t rnti, uint32_t rvidx)
{
int ret = SRSLTE_ERROR;
q->nof_detected++;
/* Setup PDSCH configuration for this CFI, SFIDX and RVIDX */
if (srslte_ue_dl_cfg_grant(q, dci_msg, cfi, sf_idx, rnti, rvidx)) {
return SRSLTE_ERROR;
}
if (q->pdsch_cfg.rv == 0) {
srslte_softbuffer_rx_reset(&q->softbuffer);
}
#ifdef PDSCH_DO_ZF
float noise_estimate = 0;
#else
float noise_estimate = srslte_chest_dl_get_noise_estimate(&q->chest);
#endif
if (q->pdsch_cfg.grant.mcs.mod > 0 && q->pdsch_cfg.grant.mcs.tbs >= 0) {
ret = srslte_pdsch_decode_rnti(&q->pdsch, &q->pdsch_cfg, &q->softbuffer,
q->sf_symbols, q->ce,
noise_estimate,
rnti, data);
if (ret == SRSLTE_ERROR) {
q->pkt_errors++;
} else if (ret == SRSLTE_ERROR_INVALID_INPUTS) {
fprintf(stderr, "Error calling srslte_pdsch_decode()\n");
} else if (ret == SRSLTE_SUCCESS) {
if (SRSLTE_VERBOSE_ISDEBUG()) {
INFO("Decoded Message: ", 0);
srslte_vec_fprint_hex(stdout, data, q->pdsch_cfg.grant.mcs.tbs);
}
}
q->pkts_total++;
}
return ret;
}
void srslte_ue_dl_reset(srslte_ue_dl_t *q) {
srslte_softbuffer_rx_reset(&q->softbuffer);
bzero(&q->pdsch_cfg, sizeof(srslte_pdsch_cfg_t));
}
void srslte_ue_dl_reset(srslte_ue_dl_t *q) {
for(int i = 0; i < SRSLTE_MAX_CODEWORDS; i++){
srslte_softbuffer_rx_reset(q->softbuffers[i]);
}
bzero(&q->pdsch_cfg, sizeof(srslte_pdsch_cfg_t));
}