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