rgb565 to rgb888 and back

General

ripper121

10 months ago

Hi :),

is there a short and fast function to convert the RGB565 to RGB888 and back again?

aoneill

NEW 10 months ago

There is https://gamebuino.com/academy/reference/gb-createcolor for going from rgb888 to rgb565. 

I see rgb565Torgb888 in Misc.cpp to go the other way, but I'm guessing it was written assuming it would only be used internally in the library.

Sorunome

NEW 10 months ago

I'd like to add that rgb888 -> rgb565 has dataloss, as we are downsampling a 24-bit cilor to a 16-bit one

ripper121

10 months ago

Thats no problem.

I have an ESP32 with a OV7670 Camera. 

The Camera only outputs RGR565, but for me its easier to work with RGB888 Values.

ripper121

NEW 10 months ago

Sorunome Sorunome

Thats no problem.

I have an ESP32 with a OV7670 Camera. 

The Camera only outputs RGR565, but for me its easier to work with RGB888 Values.

Sorunome

10 months ago

Well, you can always use the method aoniell pointed out by pre-declaring it.


EDIT:

something like this should do (untested):

#include <utils/Misc.h>

// and then
Gamebuino_Meta::RGB888 rgb = Gamebuino_Meta::rgb565Torgb888(0x1234);

rgb.r; // red
rgb.g; // green
rgb.b; // blue

Sorunome

NEW 10 months ago

ripper121 ripper121

Well, you can always use the method aoniell pointed out by pre-declaring it.


EDIT:

something like this should do (untested):

#include <utils/Misc.h>

// and then
Gamebuino_Meta::RGB888 rgb = Gamebuino_Meta::rgb565Torgb888(0x1234);

rgb.r; // red
rgb.g; // green
rgb.b; // blue

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