/**@ingroup gen_crc
* Adds a CRC to every received packet from each interface
*/
int work(void **inp, void **out) {
int i;
unsigned int n;
input_t *input;
if (poly_id) param_get_int(poly_id,&poly);
if (long_crc_id) param_get_int(long_crc_id, &long_crc);
for (i=0;i<NOF_INPUT_ITF;i++) {
if (get_input_samples(i)) {
moddebug("rcv_len=%d\n",get_input_samples(i));
memcpy(out[i],inp[i],sizeof(input_t)*get_input_samples(i));
input = out[i];
n = icrc(0, input, get_input_samples(i), long_crc, poly, mode == MODE_ADD);
if (mode==MODE_CHECK) {
if (n) {
total_errors++;
}
total_pkts++;
set_output_samples(i,get_input_samples(i)-long_crc);
if (!print_nof_pkts) {
tscnt++;
if (tscnt==interval_ts) {
tscnt=0;
#ifdef PRINT_BLER
printf("Total blocks: %d\tTotal errors: %d\tBLER=%g\n",
total_pkts,total_errors,(float)total_errors/total_pkts);
#endif
}
} else {
print_nof_pkts_cnt++;
if (print_nof_pkts_cnt == print_nof_pkts) {
print_nof_pkts_cnt=0;
printf("Total blocks: %d\tTotal errors: %d\tBLER=%g\n",
total_pkts,total_errors,(float)total_errors/total_pkts);
total_pkts=0;
total_errors=0;
}
}
} else {
set_output_samples(i,get_input_samples(i)+long_crc);
}
}
}
return 0;
}
/**@ingroup gen_demux
*
*/
int work(void **inp, void **out) {
int i;
int rcv_len, out_len;
rcv_len=get_input_samples(0);
moddebug("%d samples recevied.\n",rcv_len);
if (!rcv_len)
return 0;
modinfo_msg("received %d bytes\n",rcv_len);
if ((rcv_len - sum_special_output_lengths) % (nof_outputs-nof_special_outputs)) {
/* moderror_msg("Received length %d is not multiple of the number of output interfaces %d\n",
rcv_len,nof_outputs);
*/ return 0;
}
out_len = (rcv_len - sum_special_output_lengths) / (nof_outputs-nof_special_outputs);
for (i=0;i<nof_outputs;i++) {
if (special_output_length[i]) {
output_lengths[i] = special_output_length[i];
} else {
output_lengths[i] = out_len;
}
set_output_samples(i,output_lengths[i]);
if (!out[i]) {
moderror_msg("output itf %d not ready\n",out[i]);
return -1;
}
}
demux(inp[0],out,output_lengths,output_padding_pre,
output_padding_post,nof_outputs,input_sample_sz);
return 0;
}
/**
* @ingroup lte_ratematching
*
* Main DSP function
*
*/
int work(void **inp, void **out) {
int i, in_pkt_len, out_pkt_len, j;
int rcv_samples;
char *input, *output;
param_get_int(pre_padding_id, &pre_padding);
param_get_int(post_padding_id, &post_padding);
param_get_int(nof_packets_id, &nof_packets);
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
rcv_samples = get_input_samples(i);
moddebug("%d samples received on input interface %d.\n",rcv_samples,i);
if (rcv_samples == 0) {
moddebug("%d samples to process. Returning.\n", rcv_samples);
continue;
}
if ((rcv_samples) % nof_packets) {
moderror_msg("Received samples (%d) should multiple of "
"nof_packets (%d)\n", rcv_samples, nof_packets);
return -1;
}
in_pkt_len = rcv_samples / nof_packets;
if (direction) {
out_pkt_len = in_pkt_len - pre_padding - post_padding;
} else {
out_pkt_len = in_pkt_len + pre_padding + post_padding;
}
if (in_pkt_len) {
if (direction) {
for (j=0;j<nof_packets;j++) {
memcpy(outaddr(0),inaddr(pre_padding),input_sample_sz*out_pkt_len);
}
} else {
for (j=0;j<nof_packets;j++) {
memset(outaddr(0),0,input_sample_sz*pre_padding);
memcpy(outaddr(pre_padding),inaddr(0),input_sample_sz*in_pkt_len);
memset(outaddr(pre_padding+in_pkt_len),0,input_sample_sz*post_padding);
}
}
moddebug("%d samples sent to output interface %d.\n",out_pkt_len*nof_packets, i);
set_output_samples(i,out_pkt_len*nof_packets);
}
}
return 0;
}
int recv_dci(char *input, char *output, int len) {
struct dci_format1 dci; /* Only format1 is currently supported */
int rbg_mask = 0;
int i;
if (len == 0) {
return 0;
} else {
memset(&dci,0,sizeof(struct dci_format1));
dci.harq_pnum_len = 3;
dci.carrier_indicator_len=2;
if (param_get_int_name("nof_rbg",&dci.nof_rbg)) {
modinfo("could not get parameter nof_rbg\n");
}
if (dci_format1_unpack(input,len,&dci)<0) {
moderror("Reading DCI Format 1 packet\n");
return -1;
}
for (i=0;i<MAX_RBG_SET;i++) {
rbg_mask |= (dci.rbg_mask[i] & 0x1) << (i);
}
}
#ifdef _COMPILE_ALOE
len = 0;
int n;
n = param_remote_set_ptr(&output[len], mcs_rx, &dci.mcs, sizeof(int));
if (n == -1) {
moderror("Setting parameter mcs\n");
return -1;
}
len += n;
n = param_remote_set_ptr(&output[len], nof_rbg_rx, &dci.nof_rbg, sizeof(int));
if (n == -1) {
moderror("Setting parameter nof_rbg\n");
return -1;
}
len += n;
n = param_remote_set_ptr(&output[len], rbg_mask_rx, &rbg_mask, sizeof(int));
if (n == -1) {
moderror("Setting parameter rbg_mask\n");
return -1;
}
len += n;
set_output_samples(0,len);
modinfo_msg("received mcs=%d, nof_rbg=%d, rbgmask=0x%x\n",dci.mcs,dci.nof_rbg,rbg_mask);
#endif
return len;
}
int param_remote_set(void **out_ptr, int module_idx, int param_idx, void *value, int value_sz) {
struct ctrl_in_pkt *pkt;
if (module_idx<0 || module_idx > nof_output_itf) {
return -1;
}
pkt = out_ptr[module_idx];
if (value_sz > CTRL_PKT_VALUE_SZ) {
return -1;
}
pkt->pm_idx = param_idx;
pkt->size = value_sz;
memcpy(pkt->value,value,value_sz);
set_output_samples(module_idx,1);
return 0;
}
int work(void **inp, void **out) {
int i,n;
#if NOF_INPUTS>1
for (i=0;i<NOF_INPUT_ITF;i++) {
binsource.input[i] = inp[i];
binsource.in_len[i] = get_input_samples(i)
}
#elif NOF_INPUTS == 1
binsource.input = inp[0];
binsource.in_len = get_input_samples(0);
#endif
#if NOF_OUTPUTS>1
for (i=0;i<NOF_OUTPUT_ITF;i++) {
binsource.output[i] = out[i];
binsource.out_len = &out_len[i];
}
#elif NOF_OUTPUTS == 1
binsourceoutput = out[0];
binsource.out_len = &out_len[0];
#endif
/* Get input parameters */
if (param_get_int(nbits_id, &binsource.ctrl_in.nbits) != 1) {
moderror("Error getting parameter nbits\n");
return -1;
}
/* call work */
n = binsource_work(&binsource);
/* Set output nof_samples */
for (i=0;i<NOF_OUTPUT_ITF;i++) {
set_output_samples(i,out_len[i]);
binsource.out_len = &out_len[i];
}
/* Set output parameters */
return n;
}
int work(void **inp, void **out) {
int i, out_len;
input_t *input;
output_t *output;
param_get_int(modulation_id,&modulation);
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
if (get_input_samples(i)) {
out_len = modulate(input,output,get_input_samples(i));
if (out_len == -1) {
return -1;
}
set_output_samples(i,out_len);
}
}
return 0;
}
int work(void **inp, void **out) {
int i, j, nof_fft;
int dft_size;
input_t *input;
output_t *output;
dft_plan_t *plan;
if (param_get_int(dft_size_id,&dft_size) != 1) {
moderror("Getting parameter dft_size\n");
return -1;
}
plan = find_plan(dft_size);
if (!plan) {
if ((plan = generate_new_plan(dft_size)) == NULL) {
moderror("Generating plan.\n");
return -1;
}
}
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
if (get_input_samples(i) % dft_size) {
moderror_msg("Number of input samples (%d) must be multiple of dft_size (%d), in "
"interface %d\n",get_input_samples(i),dft_size,i);
return -1;
}
nof_fft = get_input_samples(i)/dft_size;
for (j=0;j<nof_fft;j++) {
dft_run_c2c(plan, &input[j*dft_size], &output[j*dft_size]);
}
set_output_samples(i,dft_size*nof_fft);
}
return 0;
}
int work(void **inp, void **out) {
int i, out_len, j;
input_t *input;
output_t *output;
int rcv_samples;
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
moddebug("rcv_len=%d\n",get_input_samples(i));
rcv_samples = get_input_samples(i);
if (rcv_samples) {
conv_encode(input,rcv_samples,constraint_length,rate,g,tail_bit,
output,&out_len);
for (j=0;j<padding;j++) {
output[out_len+j] = 0;
}
set_output_samples(i,out_len+padding);
}
}
return 0;
}
int work(void **inp, void **out) {
int i, j, k;
int rcv_samples, nof_ffts;
int df, fs;
int e;
int dft_size;
input_t *input;
output_t *output;
dft_plan_t *plan;
if (param_get_int(dft_size_id,&dft_size) != 1) {
dft_size = get_input_samples(0);
moddebug("Parameter dft_size not defined. Assuming %d"
" (number of input samples on interface 0).\n", dft_size);
/*moderror("Getting parameter dft_size\n");
return -1;*/
}
if (dft_size == 0) {
modinfo("dft_size = 0. Returning.\n");
return 0;
} else {
moddebug("dft_size = %d.\n", dft_size);
}
/* if (param_get_int(param_id("dft_size"),&dft_size) != 1) {
moddebug("Parameter dft_size not defined. Assuming %d"
" (number of input samples on interface 0).\n", dft_size);
}
*/
plan = find_plan(dft_size);
if (!plan) {
if ((plan = generate_new_plan(dft_size)) == NULL) {
moderror("Generating plan.\n");
return -1;
}
}
if (param_get_int(df_id, &df) != 1) {
df = 0;
}
if (df != 0) {
if (param_get_int(fs_id, &fs) != 1) {
moderror("Parameter fs not defined.\n");
return -1;
}
if (fs <= 0) {
moderror("Sampling rate fs must be larger than 0.\n");
return -1;
}
if ((df != previous_df) || (fs != previous_fs) || (dft_size != previous_dft_size)) {
e = process_shift_params(df, fs, dft_size);
if (e < 0) {
return -1;
}
previous_df = df;
previous_fs = fs;
previous_dft_size = dft_size;
}
}
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
rcv_samples = get_input_samples(i);
moddebug("%d samples received on interface %d.\n",rcv_samples, i);
if (rcv_samples == 0) {
moddebug("%d samples to process. Returning.\n", rcv_samples);
continue;
}
moddebug("Processing %d samples...\n",rcv_samples);
if (rcv_samples % dft_size) {
moderror_msg("Number of input samples (%d) not integer multiple"
" of dft_size (%d) on interface %d\n",rcv_samples,dft_size,i);
return -1;
}
if (get_input_samples(0)>0) {
modinfo_msg("received %d samples\n",get_input_samples(0));
}
nof_ffts = rcv_samples/dft_size;
for (j=0;j<nof_ffts;j++) {
if ((df != 0) && (direction == FORWARD)) { /* Rx: shift before FFT */
for (k=0;k<dft_size;k++) {
input[j*dft_size+k] *= shift[k*shift_increment];
}
}
dft_run_c2c(plan, &input[j*dft_size], &output[j*dft_size]);
if ((df !=0) && (direction == BACKWARD)) { /* Tx: shift after IFFT */
for (k=0;k<dft_size;k++) {
output[j*dft_size+k] *= shift[k*shift_increment];
}
}
}
set_output_samples(i,dft_size*nof_ffts);
moddebug("%d samples sent to output interface %d.\n",dft_size*nof_ffts,i);
}
return 0;
}
/**@ingroup gen_remcyclic
*
* For each interface, the number of received samples must be multiple of the OFDM symbol size,
* otherwise the module produces and error and stops the waveform.
*
* It removes a cyclic prefix to each OFDM symbol received from each interface.
*/
int work(void **inp, void **out) {
int i, j;
int dft_size, cyclic_prefix_sz, first_cyclic_prefix_sz;
int k, nof_ofdm_symbols_per_slot, rcv_samples;
int cpy;
int cnt;
input_t *input;
output_t *output;
if (param_get_int(cyclic_prefix_sz_id, &cyclic_prefix_sz) != 1) {
moderror("getting parameter cyclic_prefix_sz\n");
return -1;
}
if (first_cyclic_prefix_sz_id) {
if (param_get_int(first_cyclic_prefix_sz_id, &first_cyclic_prefix_sz) != 1) {
moderror("getting parameter first_cyclic_prefix_sz\n");
return -1;
}
} else {
first_cyclic_prefix_sz = cyclic_prefix_sz;
}
if (param_get_int(dft_size_id, &dft_size) != 1) {
/*moderror("getting parameter dft_size\n");
return -1;*/
dft_size = get_input_samples(0)-cyclic_prefix_sz;
moddebug("Parameter dft_size not defined. Assuming %d"
" (number of input samples on interface 0 - cyclic_prefix_sz)."
"\n", dft_size);
}
if (dft_size <= 0) {
modinfo("dft_size <= 0. Returning.\n");
return 0;
} else {
moddebug("dft_size = %d.\n", dft_size);
}
if (first_cyclic_prefix_sz > dft_size || cyclic_prefix_sz > dft_size) {
moderror_msg("Error with parameters dft_size=%d, cyclic_prefix_sz=%d, "
"first_cyclic_prefix_sz=%d\n",dft_size,cyclic_prefix_sz,first_cyclic_prefix_sz);
return -1;
}
if (first_cyclic_prefix_sz == cyclic_prefix_sz) {
nof_ofdm_symbols_per_slot = 6;
} else {
nof_ofdm_symbols_per_slot = 7;
}
for (i=0;i<NOF_INPUT_ITF;i++) {
cnt=0;
input = inp[i];
output = out[i];
rcv_samples = get_input_samples(i);
moddebug("rcv_len=%d samples \n",rcv_samples);
if (rcv_samples > 0) {
j = 0;
k = 0;
while (cnt < rcv_samples) {
if (j == k*nof_ofdm_symbols_per_slot) {
cpy = first_cyclic_prefix_sz;
k++;
} else {
cpy = cyclic_prefix_sz;
}
memcpy(output,&input[cpy],sizeof(input_t)*dft_size);
input += dft_size+cpy;
output += dft_size;
cnt += dft_size+cpy;
j++;
}
if (rcv_samples != cnt) {
moderror_msg("Number of input samples (%d) should be "
"equal to %d on interface %d\n",rcv_samples,cnt,i);
return -1;
}
set_output_samples(i, j*dft_size);
}
}
return 0;
}
/**@ingroup gen_cyclic
*
* For each interface, the number of received samples must be multiple of the OFDM symbol size,
* otherwise the module produces and error and stops the waveform.
*
* It adds a cyclic prefix to each OFDM symbol received from each interface.
*/
int work(void **inp, void **out) {
int i, j;
int nof_ofdm_symb;
int dft_size, cyclic_prefix_sz, first_cyclic_prefix_sz;
int k, nof_ofdm_symbols_per_slot,rcv_samples;
int cnt;
int cpy;
div_t symbols;
input_t *input;
output_t *output;
if (param_get_int(dft_size_id, &dft_size) != 1) {
/*moderror("getting parameter dft_size\n");
return -1;*/
dft_size = get_input_samples(0);
moddebug("Parameter dft_size not defined. Assuming %d"
" (number of input samples on interface 0).\n", dft_size);
}
if (dft_size == 0) {
modinfo("dft_size = 0. Returning.\n");
return 0;
} else {
moddebug("dft_size = %d.\n", dft_size);
}
if (param_get_int(cyclic_prefix_sz_id, &cyclic_prefix_sz) != 1) {
moderror("getting parameter cyclic_prefix_sz\n");
return -1;
}
if (first_cyclic_prefix_sz_id) {
if (param_get_int(first_cyclic_prefix_sz_id, &first_cyclic_prefix_sz) != 1) {
moderror("getting parameter first_cyclic_prefix_sz\n");
return -1;
}
} else {
first_cyclic_prefix_sz = cyclic_prefix_sz;
}
if (first_cyclic_prefix_sz > dft_size || cyclic_prefix_sz > dft_size) {
moderror_msg("Error with parameters dft_size=%d, cyclic_prefix_sz=%d, "
"first_cyclic_prefix_sz=%d\n",dft_size,cyclic_prefix_sz,first_cyclic_prefix_sz);
return -1;
}
if (first_cyclic_prefix_sz == cyclic_prefix_sz) {
nof_ofdm_symbols_per_slot = 6;
} else {
nof_ofdm_symbols_per_slot = 7;
}
for (i=0;i<NOF_INPUT_ITF;i++) {
input = inp[i];
output = out[i];
rcv_samples = get_input_samples(i);
moddebug("rcv_len=%d samples \n",rcv_samples);
symbols = div(rcv_samples,dft_size);
if (symbols.rem) {
moderror_msg("Number of input samples (%d) must be "
"integer multiple of dft_size (%d) on interface "
"%d\n",rcv_samples,dft_size,i);
return -1;
}
nof_ofdm_symb = symbols.quot;
if (nof_ofdm_symb) {
k = 0;
cnt = 0;
for (j=0;j<nof_ofdm_symb;j++) {
if (j == k*nof_ofdm_symbols_per_slot) {
cpy = first_cyclic_prefix_sz;
k++;
} else {
cpy = cyclic_prefix_sz;
}
memcpy(output, &input[dft_size-cpy], sizeof(input_t)*cpy);
memcpy(&output[cpy], input, sizeof(input_t)*dft_size);
input += dft_size;
output += dft_size+cpy;
cnt += dft_size+cpy;
}
set_output_samples(i, cnt);
}
}
return 0;
}