GitHub/dsd-fme
1
0
Fork 0
mirror of https://github.com/lwvmobile/dsd-fme.git synced 2026-11-13 17:27:21 -05:00
Code Issues Packages Projects Releases Wiki Activity

EDACS Analog Call Dotting Sequence Detection;

Browse Source
This commit is contained in:
lwvmobile
2023-09-04 17:20:42 -04:00
parent 76d2866498
commit d917f85926
3 changed files with 22 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/dsd.h
View File

@@ -882,6 +882,7 @@ void openAudioInDevice (dsd_opts * opts);
int getDibit (dsd_opts * opts, dsd_state * state);
int get_dibit_and_analog_signal (dsd_opts * opts, dsd_state * state, int * out_analog_signal);
int digitize (dsd_opts* opts, dsd_state* state, int symbol);
void skipDibit (dsd_opts * opts, dsd_state * state, int count);
void saveImbe4400Data (dsd_opts * opts, dsd_state * state, char *imbe_d);

3
src/dsd_dibit.c
View File

@@ -217,8 +217,7 @@ invert_dibit(int dibit)
return -1;
}
static int digitize (dsd_opts* opts, dsd_state* state, int symbol)
//int digitize (dsd_opts* opts, dsd_state* state, int symbol)
int digitize (dsd_opts* opts, dsd_state* state, int symbol)
{
// determine dibit state
if ((state->synctype == 6) || (state->synctype == 14)|| (state->synctype == 18) || (state->synctype == 37))

21
src/edacs-fme.c
View File

@@ -215,7 +215,6 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
fprintf (stderr, " AFS [0x%03X] [%02d-%03d] LCN [%02d]", afs, afs >> 7, afs & 0x7F, lcn);
fprintf (stderr, "%s", KNRM);
if (rms > sql) fprintf (stderr, "\n");
//Update Ncurses Terminal
if (opts->use_ncurses_terminal == 1)
@@ -230,6 +229,26 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
sf_write_short(opts->wav_out_f, analog2, 960);
sf_write_short(opts->wav_out_f, analog3, 960);
}
//digitize analog samples for a dotting sequence check
unsigned long long int sr = 0;
for (i = 0; i < 960; i+=5) //Samples Per Symbol is 5, so incrememnt every 5
{
sr = sr << 1;
sr += digitize (opts, state, (int)analog1[i]);
}
//debug
// fprintf (stderr, " SR: %016llX", sr);
if (sr == 0xAAAAAAAAAAAAAAAA || sr == 0x5555555555555555)
{
fprintf (stderr, " EDACS DOTTING SEQUENCE: ");
rms = 0; //break while loop by dropping rms value
fprintf (stderr, "\n");
}
if (rms > sql) fprintf (stderr, "\n");
}
}