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63 lines
2.5 KiB
C++
63 lines
2.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////
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#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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