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Reduce heap fragmentation when switching ledmaps

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This commit is contained in:
Blaz Kristan
2023-12-28 23:32:47 +01:00
parent 6332ee6edb
commit 6cd0da821a
5 changed files with 36 additions and 53 deletions
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21
wled00/FX_2Dfcn.cpp
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@@ -36,14 +36,9 @@
// so matrix should disable regular ledmap processing
void WS2812FX::setUpMatrix() {
#ifndef WLED_DISABLE_2D
// erase old ledmap, just in case.
if (customMappingTable != nullptr) delete[] customMappingTable;
customMappingTable = nullptr;
customMappingSize = 0;
// isMatrix is set in cfg.cpp or set.cpp
if (isMatrix) {
// calculate width dynamically because it will have gaps
// calculate width dynamically because it may have gaps
Segment::maxWidth = 1;
Segment::maxHeight = 1;
for (size_t i = 0; i < panel.size(); i++) {
@@ -68,15 +63,17 @@ void WS2812FX::setUpMatrix() {
return;
}
customMappingTable = new uint16_t[Segment::maxWidth * Segment::maxHeight];
customMappingSize = 0; // prevent use of mapping if anything goes wrong
if (customMappingTable == nullptr) customMappingTable = new uint16_t[getLengthTotal()];
if (customMappingTable != nullptr) {
customMappingSize = Segment::maxWidth * Segment::maxHeight;
customMappingSize = getLengthTotal();
// fill with empty in case we don't fill the entire matrix
for (size_t i = 0; i< customMappingSize; i++) {
customMappingTable[i] = (uint16_t)-1;
}
unsigned matrixSize = Segment::maxWidth * Segment::maxHeight;
for (unsigned i = 0; i<matrixSize; i++) customMappingTable[i] = 0xFFFFU;
for (unsigned i = matrixSize; i<getLengthTotal(); i++) customMappingTable[i] = i; // trailing LEDs for ledmap (after matrix) if it exist
// we will try to load a "gap" array (a JSON file)
// the array has to have the same amount of values as mapping array (or larger)
@@ -101,7 +98,7 @@ 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 >= matrixSize) { // not an empty map
gapTable = new int8_t[gapSize];
if (gapTable) for (size_t i = 0; i < gapSize; i++) {
gapTable[i] = constrain(map[i], -1, 1);