Are there performance reasons that every second line is skipped and the previous line is copied in place or is this just to ease the "ascii-conversion" that happens later?

Another question: I see that the interrupt "ETS_I2S0_INUM" is triggered by the (falling?) edge of WS (PCLK). I'm looking into also capturing JPEG frames, i see that falling vsync edge is captured with a loop looking at the gpio level. Would it also be possible to use an interrupt to trigger an inter...

Oh... i was totally focused on 3 buffers, (i don't know why..) and was therefore completly confused by the index flipping between 0 and 1. I was also confused why the final fb seems to be smaller as "height * (line buffer - 16)", but only using the luminance component of the pixels explain this. Tha...

Hi, i'm new to the esp32 and also never done anything meaningful with the esp8266. I was studying the esp32-cam-demo source code and some questions occured. Maybe someone can enlighten me. What i don't quite understand why "s_dma_buf"/"s_dma_desc" ist defined/used 3 items big or at which times the d...