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HUB75: avoid allocating ledMap

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based on an idea by @troyhacks : fight heap fragmentation by avoiding to allocate ledMap when not needed.
This commit is contained in:
Frank
2024-09-28 02:18:24 +02:00
parent 8338b58b88
commit 0555b8e5f2
1 changed files with 21 additions and 1 deletions
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22
wled00/FX_2Dfcn.cpp
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@@ -66,9 +66,26 @@ void WS2812FX::setUpMatrix() {
USER_PRINTF("setUpMatrix %d x %d\n", Segment::maxWidth, Segment::maxHeight);
// WLEDMM check if mapping table is necessary (avoiding heap fragmentation)
#if defined(WLED_ENABLE_HUB75MATRIX)
bool needLedMap = (loadedLedmap >0); // ledmap loaded
needLedMap |= WLED_FS.exists(F("/2d-gaps.json")); // gapFile found
needLedMap |= panel.size() > 1; // 2D config: more than one panel
if (panel.size() == 1) {
Panel &p = panel[0];
needLedMap |= p.serpentine; // panel serpentine
needLedMap |= p.vertical; // panel not horizotal
needLedMap |= p.bottomStart | p.rightStart; // panel not top left, or not left->light
needLedMap |= (p.xOffset > 0) || (p.yOffset > 0); // panel does not start at (0,0)
}
#else
bool needLedMap = true; // always use ledMaps on non-HUB75 builds
#endif
//WLEDMM recreate customMappingTable if more space needed
if (Segment::maxWidth * Segment::maxHeight > customMappingTableSize) {
size_t size = max(ledmapMaxSize, size_t(Segment::maxWidth * Segment::maxHeight)); // TroyHacks
if (!needLedMap) size = 0; // softhack007
USER_PRINTF("setupmatrix customMappingTable alloc %d from %d\n", size, customMappingTableSize);
//if (customMappingTable != nullptr) delete[] customMappingTable;
//customMappingTable = new uint16_t[size];
@@ -88,8 +105,9 @@ void WS2812FX::setUpMatrix() {
if (customMappingTable != nullptr) customMappingTableSize = size;
}
if (customMappingTable != nullptr) {
if ((customMappingTable != nullptr) || (!needLedMap)) { // softhack007
customMappingSize = Segment::maxWidth * Segment::maxHeight;
if (!needLedMap) customMappingSize = 0; // softhack007
// fill with empty in case we don't fill the entire matrix
for (size_t i = 0; i< customMappingTableSize; i++) { //WLEDMM use customMappingTableSize
@@ -130,6 +148,7 @@ void WS2812FX::setUpMatrix() {
releaseJSONBufferLock();
}
if (needLedMap && customMappingTable != nullptr) { // softhack007
uint16_t x, y, pix=0; //pixel
for (size_t pan = 0; pan < panel.size(); pan++) {
Panel &p = panel[pan];
@@ -146,6 +165,7 @@ void WS2812FX::setUpMatrix() {
}
}
}
}
// delete gap array as we no longer need it
if (gapTable) {delete[] gapTable; gapTable=nullptr;} // softhack prevent dangling pointer