mirror of https://github.com/f4exb/sdrangel.git
90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
#include "memory.h"
|
|
#include "DVBS2.h"
|
|
//
|
|
// The output is bit packed ready for modulating
|
|
//
|
|
void DVBS2::s2_interleave( void )
|
|
{
|
|
int index=0;
|
|
int rows=0;
|
|
|
|
int frame_size = m_format[0].nldpc;
|
|
|
|
if( m_format[0].constellation == M_QPSK )
|
|
{
|
|
rows = frame_size/2;
|
|
m_payload_symbols = rows;
|
|
for( int i = 0; i < rows; i++ )
|
|
{
|
|
m_iframe[i] = (m_frame[index++]<<1);
|
|
m_iframe[i] |= m_frame[index++];
|
|
}
|
|
return;
|
|
}
|
|
|
|
if( m_format[0].constellation == M_8PSK )
|
|
{
|
|
if( m_format[0].code_rate == CR_3_5 )
|
|
{
|
|
rows = frame_size/3;
|
|
m_payload_symbols = rows;
|
|
Bit *c1,*c2,*c3;
|
|
c1 = &m_frame[rows*2];
|
|
c2 = &m_frame[rows];
|
|
c3 = &m_frame[0];
|
|
for( int i = 0; i < rows; i++ )
|
|
{
|
|
m_iframe[i] = (c1[i]<<2) | (c2[i]<<1) | (c3[i]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
rows = frame_size/3;
|
|
m_payload_symbols = rows;
|
|
Bit *c1,*c2,*c3;
|
|
c1 = &m_frame[0];
|
|
c2 = &m_frame[rows];
|
|
c3 = &m_frame[rows*2];
|
|
for( int i = 0; i < rows; i++ )
|
|
{
|
|
m_iframe[i] = (c1[i]<<2) | (c2[i]<<1) | (c3[i]);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
if( m_format[0].constellation == M_16APSK )
|
|
{
|
|
rows = frame_size/4;
|
|
m_payload_symbols = rows;
|
|
Bit *c1,*c2,*c3,*c4;
|
|
c1 = &m_frame[0];
|
|
c2 = &m_frame[rows];
|
|
c3 = &m_frame[rows*2];
|
|
c4 = &m_frame[rows*3];
|
|
for( int i = 0; i < rows; i++ )
|
|
{
|
|
m_iframe[i] = (c1[i]<<3) | (c2[i]<<2) | (c3[i]<<1) | (c4[i]);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if( m_format[0].constellation == M_32APSK )
|
|
{
|
|
rows = frame_size/5;
|
|
m_payload_symbols = rows;
|
|
Bit *c1,*c2,*c3,*c4,*c5;
|
|
c1 = &m_frame[0];
|
|
c2 = &m_frame[rows];
|
|
c3 = &m_frame[rows*2];
|
|
c4 = &m_frame[rows*3];
|
|
c5 = &m_frame[rows*4];
|
|
for( int i = 0; i < rows; i++ )
|
|
{
|
|
m_iframe[i] = (c1[i]<<4) | (c2[i]<<3) | (c3[i]<<2) | (c4[i]<<1) | c5[i];
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|