Jan/WLED_MM_Infinity
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robustness improvements

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* handling of stop = 0 when calculating sizes (avoid unsigned underflow)
* make sure groupLength() is never zero (to avoid div/0)
* gapmaps: check for "(gapSize > 0)" added.

not sure if all the checks are 100% needed, but they will improve robustness in corner cases.
This commit is contained in:
Frank
2023-06-21 13:30:40 +02:00
parent 310daa61a8
commit 582b96f846
5 changed files with 8 additions and 7 deletions
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2
wled00/FX_2Dfcn.cpp
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@@ -115,7 +115,7 @@ void WS2812FX::setUpMatrix() {
// 1 ... active pixel (it will count and will be mapped)
JsonArray map = doc.as<JsonArray>();
gapSize = map.size();
if (!map.isNull() && gapSize >= customMappingSize) { // not an empty map
if (!map.isNull() && (gapSize > 0) && gapSize >= customMappingSize) { // not an empty map //softhack also check gapSize>0
gapTable = new int8_t[gapSize];
if (gapTable) for (size_t i = 0; i < gapSize; i++) {
gapTable[i] = constrain(map[i], -1, 1);