kopia lustrzana https://github.com/pabr/leansdr
Improve usage()
rodzic
4b8843460b
commit
63bcd9b4aa
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@ -118,7 +118,7 @@ void run(config &cfg) {
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float *coeffs;
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int ncoeffs = filtergen::root_raised_cosine
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(order, Fm, cfg.rolloff, &coeffs);
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// This yields the desired power level even without AGC.
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// This yields about the desired power level even without AGC.
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filtergen::normalize_power(ncoeffs, coeffs, cfg.power/cstln_amp);
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if ( sch.verbose )
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@ -174,7 +174,7 @@ void run(config &cfg) {
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// Command-line
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void usage(const char *name, FILE *f, int c) {
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void usage(const char *name, FILE *f, int c, const char *info=NULL) {
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fprintf(f, "Usage: %s [options] < TS > IQ\n", name);
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fprintf(f, "Modulate MPEG packets into a DVB-S baseband signal\n");
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fprintf(f, "Output float complex samples\n");
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@ -186,14 +186,16 @@ void usage(const char *name, FILE *f, int c) {
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" 16QAM .. 256QAM (experimental)\n"
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" --cr STRING 1/2, 2/3, 3/4, 5/6, 7/8\n"
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" -f INTERP[/DECIM] Samples per symbols (default: 2)\n"
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" --roll-off FLOAT RRC roll-off (defalt: 0.35)\n"
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" --rrc-rej FLOAT RRC filter rejection (defaut:10)\n"
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" --power FLOAT Output power (dB)\n"
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" --roll-off FLOAT RRC roll-off (default: 0.35)\n"
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" --rrc-rej FLOAT RRC filter rejection (defaut: 10)\n"
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" --power FLOAT Output power (dB, default: 0)\n"
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" --agc Better regulation of output power\n"
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" --f32 Output 32-bit floats, range +-1.0 (default)\n"
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" --s16 Output 16-bit ints\n"
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" -v Verbose output\n"
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" -v Output debugging info at startup and exit\n"
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" -d Output debugging info during operation\n"
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);
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if ( info ) fprintf(f, "** Error while processing '%s'\n", info);
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exit(c);
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}
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@ -219,7 +221,7 @@ int main(int argc, char *argv[]) {
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else if ( ! strcmp(argv[i], "4/5" ) ) cfg.fec = FEC45;
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else if ( ! strcmp(argv[i], "8/9" ) ) cfg.fec = FEC89;
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else if ( ! strcmp(argv[i], "9/10" ) ) cfg.fec = FEC910;
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else usage(argv[0], stderr, 1);
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else usage(argv[0], stderr, 1, argv[i]);
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}
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else if ( ! strcmp(argv[i], "--const") && i+1<argc ) {
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++i;
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@ -241,13 +243,13 @@ int main(int argc, char *argv[]) {
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cfg.constellation = cstln_lut<256>::QAM64;
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else if ( ! strcmp(argv[i], "256QAM" ) )
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cfg.constellation = cstln_lut<256>::QAM256;
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else usage(argv[0], stderr, 1);
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else usage(argv[0], stderr, 1, argv[i]);
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}
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else if ( ! strcmp(argv[i], "-f") && i+1<argc ) {
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++i;
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cfg.decim = 1;
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if ( sscanf(argv[i], "%d/%d", &cfg.interp, &cfg.decim) < 1 )
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usage(argv[0], stderr, 1);
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usage(argv[0], stderr, 1, argv[i]);
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}
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else if ( ! strcmp(argv[i], "--roll-off") && i+1<argc )
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cfg.rolloff = atof(argv[++i]);
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@ -262,7 +264,7 @@ int main(int argc, char *argv[]) {
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else if ( ! strcmp(argv[i], "--s16") )
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cfg.output_format = config::OUTPUT_S16;
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else
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usage(argv[0], stderr, 1);
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usage(argv[0], stderr, 1, argv[i]);
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}
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run(cfg);
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