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DATV Demod: leandvb: more debug messages. LOCK/UNLOCK message to console. Tolerate lower MER

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This commit is contained in:
f4exb 2021-03-29 04:02:22 +02:00
parent 011d5fbf60
commit a066e4dbc1
2 changed files with 30 additions and 8 deletions
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36
plugins/channelrx/demoddatv/leansdr/dvbs2.h
View File

@ -615,6 +615,7 @@ struct s2_frame_receiver : runnable
pls_total_count(0),
m_modcodType(-1),
m_modcodRate(-1),
m_locked(false),
diffs(nullptr),
sspilots(nullptr)
{
@ -817,6 +818,12 @@ struct s2_frame_receiver : runnable
fprintf(stderr, "PROBE\n");
}
if (m_locked)
{
fprintf(stderr, "UNLOCKED\n");
m_locked = false;
}
state = FRAME_PROBE;
}
@ -832,6 +839,12 @@ struct s2_frame_receiver : runnable
fprintf(stderr, "LOCKED\n");
}
if (!m_locked)
{
fprintf(stderr, "LOCKED\n");
m_locked = true;
}
opt_write(state_out, 1);
}
@ -1037,11 +1050,11 @@ struct s2_frame_receiver : runnable
return;
}
if (mer < mcinfo->esn0_nf - 1.0f)
if (mer < mcinfo->esn0_nf - 3.0f) // was -1.0f
{
// False positive from PLHEADER detection.
if (sch->debug) {
fprintf(stderr, "Insufficient MER (%f/%f)\n", mer, mcinfo->esn0_nf - 1.0f);
fprintf(stderr, "Insufficient MER (%f/%f)\n", mer, mcinfo->esn0_nf - 3.0f);
}
in.read(ss.p-in.rd());
@ -1526,6 +1539,10 @@ struct s2_frame_receiver : runnable
int ns,
sampler_state *ss)
{
if (sch->debug) {
fprintf(stderr, "match_freq\n");
}
complex<float> diff = 0;
for (int i=0; i<ns-1; ++i)
@ -1635,6 +1652,10 @@ struct s2_frame_receiver : runnable
cstln_lut<SOFTSYMB,256> *dcstln
)
{
if (sch->debug) {
fprintf(stderr, "match_frame\n");
}
// With pilots: Use first block of data slots.
// Without pilots: Use whole frame.
int ns = pls->pilots ? 16*90 : S*90;
@ -1647,17 +1668,17 @@ struct s2_frame_receiver : runnable
float besterr = 1e99;
float bestslip = 0; // Avoid compiler warning
for (int slip=-sliprange; slip<=sliprange; ++slip)
for (int slip = -sliprange; slip <= sliprange; ++slip)
{
sampler_state ssl = *pss;
float dfw = slip * 65536.0f / nwrap;
ssl.fw16 += dfw;
// Apply retroactively from midpoint of preceeding PLHEADER,
// where the phase from match_ph_amp is most reliable.
ssl.ph16 += dfw * (plscodes.LENGTH+sof.LENGTH)/2;
ssl.ph16 += dfw * (plscodes.LENGTH + sof.LENGTH) / 2;
float err = 0;
for (int s=0; s<ns; ++s)
for (int s = 0; s < ns; ++s)
{
complex<float> p = interp_next(&ssl) * ssl.gain;
typename cstln_lut<SOFTSYMB,256>::result *cr =
@ -1671,8 +1692,8 @@ struct s2_frame_receiver : runnable
if (err < besterr)
{
besterr=err;
bestslip=slip;
besterr = err;
bestslip = slip;
}
#if DEBUG_CARRIER
fprintf(stderr, "slip %+3d %6.0f ppm err=%f\n",
@ -1844,6 +1865,7 @@ struct s2_frame_receiver : runnable
uint32_t pls_total_errors, pls_total_count;
int m_modcodType;
int m_modcodRate;
bool m_locked;
private:
complex<T> *diffs;

2
plugins/channelrx/demoddatv/leansdr/sdr.h
View File

@ -753,7 +753,7 @@ struct cstln_lut : cstln_base
// demodulation would probably fail anyway.
//
// Comment-out for better throughput at high SNR.
#if 1
#if 0
while (I < -128 || I > 127 || Q < -128 || Q > 127)
{
I *= 0.5;