M17_Project
/
gr-m17
mirror of https://github.com/M17-Project/gr-m17.git
1
0
Fork 0
Code Issues Releases Wiki Activity

replace custom function with lib/ function

main
Jean-Michel Friedt 2024-01-06 13:11:15 +01:00
parent 8daa5b464f
commit e802fcefb7
1 changed files with 6 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
lib/m17_coder_impl.cc
View File

@ -46,54 +46,6 @@ namespace gr {
struct LSF lsf;
void send_Preamble(const uint8_t type,float *out, int *counterout)
{
float symb;
if(type) //pre-BERT
{
for(uint16_t i=0; i<(int)(192/2); i++) //40ms * 4800 = 192
{
symb=-3.0;
// write(STDOUT_FILENO, (uint8_t*)&symb, sizeof(float));
out[*counterout]=symb;
*counterout=(*counterout)+1;
symb=+3.0;
// write(STDOUT_FILENO, (uint8_t*)&symb, sizeof(float));
out[*counterout]=symb;
*counterout=(*counterout)+1;
}
}
else //pre-LSF
{
for(uint16_t i=0; i<(int)(192/2); i++) //40ms * 4800 = 192
{
symb=+3.0;
// write(STDOUT_FILENO, (uint8_t*)&symb, sizeof(float));
out[*counterout]=symb;
*counterout=(*counterout)+1;
symb=-3.0;
// write(STDOUT_FILENO, (uint8_t*)&symb, sizeof(float));
out[*counterout]=symb;
*counterout=(*counterout)+1;
}
}
}
// now ../M17_Implementations/SP5WWP/lib/lib.c:void send_syncword(const uint16_t syncword)
void send_Syncword(const uint16_t sword, float *out, int *counterout)
{
float symb;
for(uint8_t i=0; i<16; i+=2)
{
symb=symbol_map[(sword>>(14-i))&3];
// write(STDOUT_FILENO, (uint8_t*)&symb, sizeof(float));
out[*counterout]=symb;
*counterout=(*counterout)+1;
}
}
m17_coder::sptr
m17_coder::make(std::string src_id,std::string dst_id,short type,std::string meta, bool debug)
{
@ -193,7 +145,7 @@ void m17_coder_impl::set_type(short type)
float *out = (float *) output_items[0];
int countin=0;
int countout=0;
uint32_t countout=0;
uint8_t enc_bits[SYM_PER_PLD*2]; //type-2 bits, unpacked
uint8_t rf_bits[SYM_PER_PLD*2]; //type-4 bits, unpacked
@ -203,7 +155,7 @@ void m17_coder_impl::set_type(short type)
uint8_t data[16]; //raw payload, packed bits
uint8_t lich_cnt=0; //0..5 LICH counter, derived from the Frame Number
while (countout<noutput_items) {
while (countout<(uint32_t)noutput_items) {
if (countin+16<=noutput_items)
{if(_got_lsf) //stream frames
{
@ -211,7 +163,7 @@ void m17_coder_impl::set_type(short type)
for (int i=0;i<16;i++) {data[i]=in[countin];countin++;}
//send stream frame syncword
send_Syncword(SYNC_STR,out,&countout);
send_syncword(out,&countout,SYNC_STR);
//derive the LICH_CNT from the Frame Number
lich_cnt=_fn%6;
@ -362,10 +314,11 @@ void m17_coder_impl::set_type(short type)
conv_encode_LSF(enc_bits, &lsf);
//send out the preamble and LSF
send_Preamble(0,out,&countout); //0 - LSF preamble, as opposed to 1 - BERT preamble
//send_Preamble(0,out,&countout); //0 - LSF preamble, as opposed to 1 - BERT preamble
send_preamble(out, &countout, 0);
//send LSF syncword
send_Syncword(SYNC_LSF,out,&countout);
send_syncword(out,&countout,SYNC_LSF);
//reorder bits
for(uint16_t i=0; i<SYM_PER_PLD*2; i++)