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minimodem: NRZI code (not enabled)

This commit is contained in:
Kamal Mostafa 2011-05-30 18:57:19 -07:00
parent e43deedd44
commit e5fb5f4b75
1 changed files with 12 additions and 1 deletions
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13
src/minimodem.c
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@ -331,8 +331,17 @@ reprocess_audio:
if ( carrier_detect )
{
unsigned char physical_bit;
carrier_nsymbits++;
bit = signbit(msdelta) ? 0 : 1;
physical_bit = signbit(msdelta) ? 0 : 1;
#undef NRZI
#ifdef NRZI
bit = lastbit != physical_bit;
lastbit = physical_bit;
#else
bit = physical_bit;
#endif
#if 0
static unsigned char lastbit_strong = 0;
@ -351,7 +360,9 @@ reprocess_audio:
skipped_frames = 0;
#ifndef NRZI
lastbit = bit;
#endif
// save 11 bits:
// stop--- v v--- start bit