kopia lustrzana https://github.com/f4exb/sdrangel
105 wiersze
3.5 KiB
C++
105 wiersze
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Jon Beniston, M7RCE <jon@beniston.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 "DVBS2.h"
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//
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// The output is bit packed ready for modulating
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//
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void DVBS2::s2_interleave( void )
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{
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int index=0;
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int rows=0;
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int frame_size = m_format[0].nldpc;
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if( m_format[0].constellation == M_QPSK )
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{
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rows = frame_size/2;
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m_payload_symbols = rows;
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for( int i = 0; i < rows; i++ )
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{
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m_iframe[i] = (m_frame[index++]<<1);
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m_iframe[i] |= m_frame[index++];
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}
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return;
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}
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if( m_format[0].constellation == M_8PSK )
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{
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if( m_format[0].code_rate == CR_3_5 )
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{
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rows = frame_size/3;
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m_payload_symbols = rows;
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Bit *c1,*c2,*c3;
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c1 = &m_frame[rows*2];
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c2 = &m_frame[rows];
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c3 = &m_frame[0];
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for( int i = 0; i < rows; i++ )
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{
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m_iframe[i] = (c1[i]<<2) | (c2[i]<<1) | (c3[i]);
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}
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}
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else
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{
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rows = frame_size/3;
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m_payload_symbols = rows;
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Bit *c1,*c2,*c3;
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c1 = &m_frame[0];
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c2 = &m_frame[rows];
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c3 = &m_frame[rows*2];
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for( int i = 0; i < rows; i++ )
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{
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m_iframe[i] = (c1[i]<<2) | (c2[i]<<1) | (c3[i]);
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}
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}
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return;
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}
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if( m_format[0].constellation == M_16APSK )
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{
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rows = frame_size/4;
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m_payload_symbols = rows;
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Bit *c1,*c2,*c3,*c4;
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c1 = &m_frame[0];
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c2 = &m_frame[rows];
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c3 = &m_frame[rows*2];
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c4 = &m_frame[rows*3];
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for( int i = 0; i < rows; i++ )
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{
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m_iframe[i] = (c1[i]<<3) | (c2[i]<<2) | (c3[i]<<1) | (c4[i]);
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}
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return;
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}
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if( m_format[0].constellation == M_32APSK )
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{
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rows = frame_size/5;
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m_payload_symbols = rows;
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Bit *c1,*c2,*c3,*c4,*c5;
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c1 = &m_frame[0];
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c2 = &m_frame[rows];
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c3 = &m_frame[rows*2];
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c4 = &m_frame[rows*3];
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c5 = &m_frame[rows*4];
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for( int i = 0; i < rows; i++ )
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{
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m_iframe[i] = (c1[i]<<4) | (c2[i]<<3) | (c3[i]<<2) | (c4[i]<<1) | c5[i];
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}
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return;
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}
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}
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