I think the most important code from the udp.ccp file are these two âfunctionsâ. (l.507 following, l.589 following)
//UDP realtime: 1 warls 2 drgb 3 drgbw
if (udpIn[0] > 0 && udpIn[0] < 5)
{
realtimeIP = (isSupp) ? notifier2Udp.remoteIP() : notifierUdp.remoteIP();
DEBUG_PRINTLN(realtimeIP);
if (packetSize < 2) return;
if (udpIn[1] == 0)
{
realtimeTimeout = 0;
return;
} else {
realtimeLock(udpIn[1]*1000 +1, REALTIME_MODE_UDP);
}
if (realtimeOverride && !(realtimeMode && useMainSegmentOnly)) return;
uint16_t totalLen = strip.getLengthTotal();
if (udpIn[0] == 1) //warls
{
for (size_t i = 2; i < packetSize -3; i += 4)
{
setRealtimePixel(udpIn[i], udpIn[i+1], udpIn[i+2], udpIn[i+3], 0);
}
} else if (udpIn[0] == 2) //drgb
{
uint16_t id = 0;
for (size_t i = 2; i < packetSize -2; i += 3)
{
setRealtimePixel(id, udpIn[i], udpIn[i+1], udpIn[i+2], 0);
id++; if (id >= totalLen) break;
}
} else if (udpIn[0] == 3) //drgbw
{
uint16_t id = 0;
for (size_t i = 2; i < packetSize -3; i += 4)
{
setRealtimePixel(id, udpIn[i], udpIn[i+1], udpIn[i+2], udpIn[i+3]);
id++; if (id >= totalLen) break;
}
} else if (udpIn[0] == 4) //dnrgb
{
uint16_t id = ((udpIn[3] << 0) & 0xFF) + ((udpIn[2] << 8) & 0xFF00);
for (size_t i = 4; i < packetSize -2; i += 3)
{
if (id >= totalLen) break;
setRealtimePixel(id, udpIn[i], udpIn[i+1], udpIn[i+2], 0);
id++;
}
} else if (udpIn[0] == 5) //dnrgbw
{
uint16_t id = ((udpIn[3] << 0) & 0xFF) + ((udpIn[2] << 8) & 0xFF00);
for (size_t i = 4; i < packetSize -2; i += 4)
{
if (id >= totalLen) break;
setRealtimePixel(id, udpIn[i], udpIn[i+1], udpIn[i+2], udpIn[i+3]);
id++;
}
}
strip.show();
return;
}
And the actual function to indirectly asign the led colors I guess.
void setRealtimePixel(uint16_t i, byte r, byte g, byte b, byte w)
{
uint16_t pix = i + arlsOffset;
if (pix < strip.getLengthTotal()) {
if (!arlsDisableGammaCorrection && gammaCorrectCol) {
r = gamma8(r);
g = gamma8(g);
b = gamma8(b);
w = gamma8(w);
}
if (useMainSegmentOnly) {
Segment &seg = strip.getMainSegment();
if (pix<seg.length()) seg.setPixelColor(pix, r, g, b, w);
} else {
strip.setPixelColor(pix, r, g, b, w);
}
}
}