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24 lines
421 B
C++
24 lines
421 B
C++
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#include "DVB2.h"
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void DVB2::init_bb_randomiser(void)
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{
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int sr = 0x4A80;
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for( int i = 0; i < FRAME_SIZE_NORMAL; i++ )
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{
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int b = ((sr)^(sr>>1))&1;
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m_bb_randomise[i] = b;
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sr >>= 1;
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if( b ) sr |= 0x4000;
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}
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}
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//
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// Randomise the data bits
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//
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void DVB2::bb_randomise(void)
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{
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for( int i = 0; i < m_format[0].kbch; i++ )
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{
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m_frame[i] ^= m_bb_randomise[i];
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}
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}
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