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Corrected setting of header fields in the universal demapper

This commit is contained in:
Piotr Krysik 2016-05-22 14:07:16 +02:00
parent 19cba4762a
commit 27085acf2e
1 changed files with 21 additions and 16 deletions
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37
lib/demapping/universal_ctrl_chans_demapper_impl.cc
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@ -73,7 +73,7 @@ namespace gr {
std::copy(uplink_starts_fn_mod51.begin(), uplink_starts_fn_mod51.end(), d_uplink_starts_fn_mod51.begin());
std::copy(uplink_channel_types.begin(), uplink_channel_types.end(), d_uplink_channel_types.begin());
std::copy(uplink_subslots.begin(), uplink_subslots.end(), d_uplink_subslots.begin());
message_port_register_in(pmt::mp("bursts"));
set_msg_handler(pmt::mp("bursts"), boost::bind(&universal_ctrl_chans_demapper_impl::filter_ctrl_chans, this, _1));
message_port_register_out(pmt::mp("bursts"));
@ -86,10 +86,11 @@ namespace gr {
{
}
void universal_ctrl_chans_demapper_impl::filter_ctrl_chans(pmt::pmt_t msg)
void universal_ctrl_chans_demapper_impl::filter_ctrl_chans(pmt::pmt_t burst_in)
{
pmt::pmt_t header_plus_burst = pmt::cdr(msg);
gsmtap_hdr * header = (gsmtap_hdr *)pmt::blob_data(header_plus_burst);
pmt::pmt_t header_plus_burst = pmt::cdr(burst_in);
int8_t * burst_in_int8 = (int8_t *)pmt::blob_data(header_plus_burst);
gsmtap_hdr * header = (gsmtap_hdr *)(burst_in_int8);
if(header->timeslot==d_timeslot_nr)
{
@ -101,14 +102,15 @@ namespace gr {
uint32_t frame_nr = be32toh(header->frame_number); //get frame number
uint32_t fn_mod51 = frame_nr % 51; //frame number modulo 51
uint32_t fn_mod102 = frame_nr % 102; //frame number modulo 102
//crate new message
int8_t new_msg[sizeof(gsmtap_hdr)+BURST_SIZE];
gsmtap_hdr * new_hdr = (gsmtap_hdr*)new_msg;
memcpy(new_msg, header, sizeof(gsmtap_hdr)+BURST_SIZE);
pmt::pmt_t msg_binary_blob = pmt::make_blob(new_msg,sizeof(gsmtap_hdr)+BURST_SIZE);
pmt::pmt_t msg_out = pmt::cons(pmt::PMT_NIL, msg_binary_blob);
//create new burst
int8_t burst_tmp[sizeof(gsmtap_hdr)+BURST_SIZE];
memcpy(burst_tmp, burst_in_int8, sizeof(gsmtap_hdr)+BURST_SIZE);
pmt::pmt_t msg_binary_blob = pmt::make_blob(burst_tmp,sizeof(gsmtap_hdr)+BURST_SIZE);
pmt::pmt_t burst_out = pmt::cons(pmt::PMT_NIL, msg_binary_blob);
gsmtap_hdr * new_header = (gsmtap_hdr *)pmt::blob_data(msg_binary_blob);
//get information if burst is from uplink or downlink
bool uplink_burst = (be16toh(header->arfcn) & 0x4000) ? true : false;
@ -129,19 +131,22 @@ namespace gr {
uint32_t fn51_start = starts_fn_mod51[fn_mod51];
uint32_t fn51_stop = fn51_start + 3;
uint32_t ch_type = channel_types[fn_mod51];
//set type
new_header->type = GSMTAP_TYPE_UM;
//set type of the channel
uint32_t ch_type = channel_types[fn_mod51];
if(ch_type != 0)
{
new_hdr->sub_type = ch_type;
new_header->sub_type = ch_type;
}
new_hdr->sub_slot = subslots[fn_mod51 + (51 * (frame_nr % 2))];
new_header->sub_slot = subslots[fn_mod51 + (51 * (frame_nr % 2))];
if(fn_mod51>=fn51_start && fn_mod51<=fn51_stop)
{
uint32_t ii = fn_mod51 - fn51_start;
frame_numbers[ii] = frame_nr;
bursts[ii] = msg_out;
bursts[ii] = burst_out;
}
if(fn_mod51==fn51_stop)
@ -163,7 +168,7 @@ namespace gr {
{
message_port_pub(pmt::mp("bursts"), bursts[jj]);
}
}
}
}
}
}