Update AnimatedGIFs sketch for ESP32 to use malloc and avoid compile/startup issues with large buffers

[embedded-creations]

pixelmatix/AnimatedGIFs#26

[marcmerlin]

if anyone needs this it's in my fork: https://github.com/marcmerlin/AnimatedGIFs

[embedded-creations]

I'm not sure where this stands after updating GifDecoder to use the AnimatedGIF library, so I'm going to close it

[marcmerlin]

if it still uses arrays instead of mallocs, the problem isn't fixed.
arrays get alloced early in a smaller pool in ESP32, and just don't fit on a decent size display, but they fit if you use malloc because that goes into another pool (yeah, ESP32 sucks in that way)

[embedded-creations]

OK, thanks for the clarification, I'll reopen it.

[embedded-creations]

I think this shows how to allocate the block needed for AnimatedGIF with malloc (after allocating mymemorypool with malloc):

bitbank2/AnimatedGIF#8 (comment)

[marcmerlin]

I'm only seeing the use of a single static array. If so, that is not as good as malloc as ESP32 has memory available at runtime with malloc but not available in pre-allocated buffers (global arrays).
Also, to use psram if you choose to, you have to use malloc.

This is what I did to my old fork of the library, I switched everything to malloc.
Sorry, this is not a single CL, I wrote it over time

• marcmerlin/AnimatedGIFs@0c61911#diff-1c6b5b8854f2713658794a513e0149a7861b1aae2755e52dbb1c78a1900b2f2b
• marcmerlin/AnimatedGIFs@2715fe2#diff-1c6b5b8854f2713658794a513e0149a7861b1aae2755e52dbb1c78a1900b2f2b
• marcmerlin/AnimatedGIFs@c2dc4c7#diff-cca9dc0aaf37dcf8e83c111f403400c9f29a228fbfad3c5f62eed507f8608664
• marcmerlin/AnimatedGIFs@1750be0#diff-cca9dc0aaf37dcf8e83c111f403400c9f29a228fbfad3c5f62eed507f8608664
• marcmerlin/AnimatedGIFs@ad21ba5#diff-cca9dc0aaf37dcf8e83c111f403400c9f29a228fbfad3c5f62eed507f8608664

I later updated mallocordie to allow allocating in PSRAM to further save main memory

[marcmerlin]

mallocordie might be helpful to you: https://github.com/marcmerlin/FastLED_NeoMatrix_SmartMatrix_LEDMatrix_GFX_Demos/blob/38a137e3ac54d4f0b8d7a11ca99d2061cbbf86b1/neomatrix_config.h#L885

[embedded-creations]

Thanks for the links, I'm not working on this now, but they look useful for later