* use "float" math only - sinf(), cosf(), roundf()
* use fewer "rays" for medium-sized matrix (<=32 pixels wide/high)
* ray drawing optimized to use fixed point
up to 80% faster on esp32 and esp32-S3; -S2/-C3 should also see benefits, as these do not have floating point support in hardware.
FastLED palettes (from palettes.h) use gammas (2.6, 2.2, 2.5). Screens expect un-corrected colors, so we try to revert palette gamma correction in the browser.
fix for #90
In principle its dangerous to write pixels from the webserver callback, but in this case we should be save - `suspendStripService=true` ensures that strip.service() is not active in the main loopTask.
-DALL_JSON_TO_PSRAM -DBOARD_HAS_PSRAM -D WLED_USE_PSRAM_JSON
on -S2, this *doubles* the PSRAM utilization!
before: heap used 85%, PSRAM used 13kb / 21kb
after: heap used 60%, PSRAM used 41kb / 65kb !!
Its not enough to declare "doc" as DynamicJsonPSRAMDocument - PSRAM is not yet initialized when "doc" is created. So we need a trick to get the main doc into PSRAM later, during WLED::setup().
Code is very experimental, may or may not work, and need more testing
-> disabled with "#if 0"
I've found a code spellchecker, so this is what can be corrected easily. Changes are only affecting comments, readme and a few user-visible strings. So no functional impact expected.
we can use `-D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=xxxx` to increase the stack size of AsyncWebserver - default is 8196.
This should give us a bit of headroom for new UI items.
We still need PR #94 for more savings.
new "Receive or Local" mode:
if UDP sound is missing or interrupted for too long, switch back to local audio input.
UDP sound resumes when a fresh packet is received again.
--> still needs testing, and even more regression testing.
UDP transfers have some delays (measured between 2ms and 400ms). As consequence, FFT results sometimes "freeze" for a short time as no new data is arriving.
To hide these freezes, we apply the same "dynamics limiter" method as for volumeSmth.
* espressif32@5.2.0 --> espressif32@5.3.0
* pxmagic.htm added in cdata.js
* minor updates in style.css
* align some constants and definitions (wled.h, const.h)
* npm run build
