mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-05 16:31:15 -05:00
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include "dvb.h"
|
|
|
|
namespace leansdr
|
|
{
|
|
|
|
deconvol_sync_simple *make_deconvol_sync_simple(scheduler *sch,
|
|
pipebuf<eucl_ss> &_in,
|
|
pipebuf<u8> &_out,
|
|
enum code_rate rate)
|
|
{
|
|
// EN 300 421, section 4.4.3 Inner coding
|
|
uint32_t pX, pY;
|
|
switch (rate)
|
|
{
|
|
case FEC12:
|
|
pX = 0x1; // 1
|
|
pY = 0x1; // 1
|
|
break;
|
|
case FEC23:
|
|
case FEC46:
|
|
pX = 0xa; // 1010 (Handle as FEC4/6, no half-symbols)
|
|
pY = 0xf; // 1111
|
|
break;
|
|
case FEC34:
|
|
pX = 0x5; // 101
|
|
pY = 0x6; // 110
|
|
break;
|
|
case FEC56:
|
|
pX = 0x15; // 10101
|
|
pY = 0x1a; // 11010
|
|
break;
|
|
case FEC78:
|
|
pX = 0x45; // 1000101
|
|
pY = 0x7a; // 1111010
|
|
break;
|
|
default:
|
|
//fail("Code rate not implemented");
|
|
// For testing DVB-S2 constellations.
|
|
fprintf(stderr, "Code rate not implemented; proceeding anyway\n");
|
|
pX = pY = 1;
|
|
}
|
|
|
|
return new deconvol_sync_simple(sch, _in, _out, DVBS_G1, DVBS_G2, pX, pY);
|
|
}
|
|
|
|
} // leansdr
|