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Fixed liveview buffer over-write (fixes #2586 )

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(with odd LED counts > 256)
This commit is contained in:
cschwinne 2022-03-18 14:08:37 +01:00
parent eaa20ff4bf
commit 8601052179
1 changed files with 3 additions and 2 deletions
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5
wled00/ws.cpp
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@ -136,14 +136,15 @@ bool sendLiveLedsWs(uint32_t wsClient)
uint16_t used = strip.getLengthTotal();
uint16_t n = ((used -1)/MAX_LIVE_LEDS_WS) +1; //only serve every n'th LED if count over MAX_LIVE_LEDS_WS
AsyncWebSocketMessageBuffer * wsBuf = ws.makeBuffer(2 + (used*3)/n);
uint16_t bufSize = 2 + (used/n)*3;
AsyncWebSocketMessageBuffer * wsBuf = ws.makeBuffer(bufSize);
if (!wsBuf) return false; //out of memory
uint8_t* buffer = wsBuf->get();
buffer[0] = 'L';
buffer[1] = 1; //version
uint16_t pos = 2;
for (uint16_t i= 0; i < used; i += n)
for (uint16_t i= 0; pos < bufSize -3; i += n)
{
uint32_t c = strip.getPixelColor(i);
buffer[pos++] = qadd8(W(c), R(c)); //R, add white channel to RGB channels as a simple RGBW -> RGB map