void sync_free(sync_t *q) {
if (q) {
pss_synch_free(&q->pss);
sss_synch_free(&q->sss);
cfo_free(&q->cfocorr);
}
}
void sync_free(sync_t *q) {
int N_id_2;
for (N_id_2=0;N_id_2<3;N_id_2++) {
pss_synch_free(&q->pss[N_id_2]);
sss_synch_free(&q->sss[N_id_2]);
}
}
/* Initializes the PSS synchronization object.
*
* It correlates a signal of frame_size samples with the PSS sequence in the frequency
* domain. The PSS sequence is transformed using fft_size samples.
*/
int pss_synch_init_fft(pss_synch_t *q, uint32_t frame_size, uint32_t fft_size) {
int ret = LIBLTE_ERROR_INVALID_INPUTS;
if (q != NULL) {
uint32_t N_id_2;
uint32_t buffer_size;
bzero(q, sizeof(pss_synch_t));
q->N_id_2 = 10;
q->fft_size = fft_size;
q->frame_size = frame_size;
buffer_size = fft_size + frame_size + 1;
q->tmp_input = vec_malloc(buffer_size * sizeof(cf_t));
if (!q->tmp_input) {
fprintf(stderr, "Error allocating memory\n");
goto clean_and_exit;
}
q->conv_output = vec_malloc(buffer_size * sizeof(cf_t));
if (!q->conv_output) {
fprintf(stderr, "Error allocating memory\n");
goto clean_and_exit;
}
for (N_id_2=0;N_id_2<3;N_id_2++) {
q->pss_signal_freq[N_id_2] = vec_malloc(buffer_size * sizeof(cf_t));
if (!q->pss_signal_freq[N_id_2]) {
fprintf(stderr, "Error allocating memory\n");
goto clean_and_exit;
}
/* The PSS is translated into the frequency domain for each N_id_2 */
if (pss_synch_init_N_id_2(q->pss_signal_freq[N_id_2], N_id_2, fft_size)) {
fprintf(stderr, "Error initiating PSS detector for N_id_2=%d fft_size=%d\n", N_id_2, fft_size);
goto clean_and_exit;
}
}
#ifdef CONVOLUTION_FFT
if (conv_fft_cc_init(&q->conv_fft, frame_size, fft_size)) {
fprintf(stderr, "Error initiating convolution FFT\n");
goto clean_and_exit;
}
#endif
ret = LIBLTE_SUCCESS;
}
clean_and_exit:
if (ret == LIBLTE_ERROR) {
pss_synch_free(q);
}
return ret;
}
