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DATV: leandvb: retrofit of Cleanup scope of some S2 constants.

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f4exb 2021-03-26 00:57:52 +01:00
parent 75153ab12e
commit 3bfa552813
1 changed files with 13 additions and 10 deletions
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23
plugins/channelrx/demoddatv/leansdr/dvbs2.h
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@ -25,6 +25,9 @@
// | S2 RX: Capture TED decision history in sampler_state. pabr committed on Dec 5, 2019 // | S2 RX: Capture TED decision history in sampler_state. pabr committed on Dec 5, 2019
// | S2 RX: Print error rate on PLS symbols. pabr committed on Dec 5, 2019 // | S2 RX: Print error rate on PLS symbols. pabr committed on Dec 5, 2019
// | New DVB-S2 receiver with PL-based carrier recovery. modcod/framesize filtering for VCM. pabr committed on Jan 9, 2020 // | New DVB-S2 receiver with PL-based carrier recovery. modcod/framesize filtering for VCM. pabr committed on Jan 9, 2020
// skip Soft-decoding of S2 PLSCODE. pabr committed on Jan 16, 2020
// skip Validate PLHEADER soft-decoding when DEBUG_CARRIER==1. pabr committed on Jan 17, 2020
// | Cleanup scope of some S2 constants. pabr committed on Apr 29, 2020
#ifndef LEANSDR_DVBS2_H #ifndef LEANSDR_DVBS2_H
#define LEANSDR_DVBS2_H #define LEANSDR_DVBS2_H
@ -289,10 +292,13 @@ struct plslot
const struct modcod_info const struct modcod_info
{ {
static const int MIN_SLOTS_PER_FRAME = 144;
static const int MIN_SYMBOLS_PER_FRAME =
(1+MIN_SLOTS_PER_FRAME) * PLSLOT_LENGTH;
static const int MAX_SLOTS_PER_FRAME = 360; static const int MAX_SLOTS_PER_FRAME = 360;
static const int MAX_SYMBOLS_PER_FRAME = static const int MAX_SYMBOLS_PER_FRAME =
(1 + MAX_SLOTS_PER_FRAME) * plslot<uint8_t>::LENGTH + (1 + MAX_SLOTS_PER_FRAME) * PLSLOT_LENGTH +
((MAX_SLOTS_PER_FRAME - 1) / 16) * pilot_length; ((MAX_SLOTS_PER_FRAME - 1) / 16) * PILOT_LENGTH;
int nslots_nf; // Number of 90-symbol slots per normal frame int nslots_nf; // Number of 90-symbol slots per normal frame
int nsymbols; // Symbols in the constellation int nsymbols; // Symbols in the constellation
cstln_base::predef c; cstln_base::predef c;
@ -566,9 +572,6 @@ struct s2_frame_receiver : runnable
bool fastdrift; // Carrier drift faster than pilots bool fastdrift; // Carrier drift faster than pilots
float freq_tol; // Tolerance on carrier frequency float freq_tol; // Tolerance on carrier frequency
float sr_tol; // Tolerance on symbol rate float sr_tol; // Tolerance on symbol rate
static const int MAX_SYMBOLS_PER_FRAME =
(1+modcod_info::MAX_SLOTS_PER_FRAME)*PLSLOT_LENGTH +
((modcod_info::MAX_SLOTS_PER_FRAME-1)/16)*PILOT_LENGTH;
s2_frame_receiver( s2_frame_receiver(
scheduler *sch, scheduler *sch,
@ -603,7 +606,7 @@ struct s2_frame_receiver : runnable
mer_out(opt_writer(_mer_out)), mer_out(opt_writer(_mer_out)),
cstln_out(opt_writer(_cstln_out,1024)), cstln_out(opt_writer(_cstln_out,1024)),
cstln_pls_out(opt_writer(_cstln_pls_out,1024)), cstln_pls_out(opt_writer(_cstln_pls_out,1024)),
symbols_out(opt_writer(_symbols_out,MAX_SYMBOLS_PER_FRAME)), symbols_out(opt_writer(_symbols_out, modcod_info::MAX_SYMBOLS_PER_FRAME)),
state_out(opt_writer(_state_out)), state_out(opt_writer(_state_out)),
first_run(true), first_run(true),
scrambling(0), scrambling(0),
@ -706,7 +709,7 @@ struct s2_frame_receiver : runnable
// Require enough samples to detect one plheader, // Require enough samples to detect one plheader,
// TBD margin ? // TBD margin ?
int min_samples = (1 + MAX_SYMBOLS_PER_FRAME + int min_samples = (1 + modcod_info::MAX_SYMBOLS_PER_FRAME +
sof.LENGTH+plscodes.LENGTH)*omega0 * 2; sof.LENGTH+plscodes.LENGTH)*omega0 * 2;
while (in.readable() >= min_samples + sampler->readahead() && while (in.readable() >= min_samples + sampler->readahead() &&
@ -714,7 +717,7 @@ struct s2_frame_receiver : runnable
opt_writable(freq_out, 1) && opt_writable(freq_out, 1) &&
opt_writable(ss_out, 1) && opt_writable(ss_out, 1) &&
opt_writable(mer_out, 1) && opt_writable(mer_out, 1) &&
opt_writable(symbols_out, MAX_SYMBOLS_PER_FRAME) && opt_writable(symbols_out, modcod_info::MAX_SYMBOLS_PER_FRAME) &&
opt_writable(state_out, 1)) opt_writable(state_out, 1))
{ {
if (first_run) if (first_run)
@ -778,7 +781,7 @@ struct s2_frame_receiver : runnable
// is at same level as during steady-state demodulation. // is at same level as during steady-state demodulation.
// This has no effect if the first detection is successful. // This has no effect if the first detection is successful.
float duty_factor = 5; float duty_factor = 5;
discard = MAX_SYMBOLS_PER_FRAME * omega0 * (duty_factor+drand48()-0.5); discard = modcod_info::MAX_SYMBOLS_PER_FRAME * omega0 * (duty_factor+drand48()-0.5);
} }
} }
@ -796,7 +799,7 @@ struct s2_frame_receiver : runnable
sampler->update_freq(ss_cache.fw16/omega0); sampler->update_freq(ss_cache.fw16/omega0);
const int search_range = MAX_SYMBOLS_PER_FRAME; const int search_range = modcod_info::MAX_SYMBOLS_PER_FRAME;
ss_cache.p = in.rd(); ss_cache.p = in.rd();
find_plheader(&ss_cache, search_range); find_plheader(&ss_cache, search_range);
#if DEBUG_CARRIER #if DEBUG_CARRIER