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Bodmer / TFT_eFEX

A support library for TFT_eSPI that adds commonly used extra functions
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TJpgDec.drawJpg vs fex.drawJpg #18

Closed robotzero1 closed 4 years ago

robotzero1 commented 4 years ago

Hi, I've connected a ST7735 to an ESP32-CAM for a live video view.

Both of the following work but I'm not sure of the advantages and disadvantages of each

fex.drawJpg((const uint8_t*)fb->buf, fb->len, 0, 0);
TJpgDec.drawJpg(0, 0, (const uint8_t*)fb->buf, fb->len);

The eFex library has more features and offers native ESP32 decoding so for my use I guess this is the one to use.

Bodmer commented 4 years ago

Both methods use the same underlying jpeg decoder software and so the performance is likely to be identical. TJpg_Decoder uses a slightly newer version of the decoder software but that probably makes no difference. TJpg_Decoder is a generic library so can be used with other processors such as STM32 or ESP8266.

summerfind commented 2 years ago

Hi, Bodmer, how to use TJpg_Decoder to draw a Jpeg file on ESP32 SPIFFS? Thanks Summer