williamp/osmocom-analog
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Add ascii-art spectrum analyzer for SDR support

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This commit is contained in:
Andreas Eversberg
2017-02-05 08:54:56 +01:00
parent 3fb2ade352
commit 6a3cfd608e
9 changed files with 391 additions and 8 deletions
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9
src/common/display_iq.c
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@@ -41,8 +41,8 @@ void display_iq_init(int samplerate)
memset(&disp, 0, sizeof(disp));
disp.interval_max = (double)samplerate * DISPLAY_INTERVAL + 0.5;
/* should not happen due to low interval */
if (disp.interval_max < MAX_DISPLAY_IQ + 1)
disp.interval_max = MAX_DISPLAY_IQ + 1;
if (disp.interval_max < MAX_DISPLAY_IQ - 1)
disp.interval_max = MAX_DISPLAY_IQ - 1;
}
void display_iq_on(int on)
@@ -132,8 +132,9 @@ void display_iq(float *samples, int length)
pos = 0;
continue;
}
buffer[pos++] = *samples++;
buffer[pos++] = *samples++;
buffer[pos * 2] = samples[i * 2];
buffer[pos * 2 + 1] = samples[i * 2 + 1];
pos++;
if (pos == MAX_DISPLAY_IQ) {
memset(&screen, ' ', sizeof(screen));
memset(&overdrive, 0, sizeof(overdrive));