jpg size

[rayman]

hi @all,

there is possibility to get the size of a loaded image ?

GD.cmd_loadimage(0, 0);
GD.load("logo.jpg");
int logoWidth = GD.;
int logoHeight = GD.;

thx for hints ...

[jamesbowman]

Yes, you can use cmd_getprops -- this code does it:

github.com/jamesbowman/gd2-lib/blob/master/GD2.cpp#L192-L198


 uint32_t ptr, w, h;
 GD.cmd_getprops(ptr, w, h);
 GD.finish();
 size.x = GD.rd16(w);
 size.y = GD.rd16(h);
Note the finish after cmd_getprops() -- this is a blocking command.

[rayman]

thx for your very fast respons ...

works fine

[tftlcdcyg]

By the way: is it possible to retrieve the image dimensions directly on the screen inside of the sketch?

In affirmative case: which is the right sequence of instructions to achieve?