BMP decoder for LVGL

This repository is merged into the lvgl repository. See https://docs.lvgl.io/master/libs/bmp.html

Allow the use of BMP images in LVGL. This implementation uses bmp-decoder library. The pixel are read on demand (not the whole image is loaded) so using BMP imgages requires very little RAM.

Compatible with LVGL's feat/new-fs-api branch. If you use the lv_fs_if repository it's new-api branch should be used.

Get started

• Download or clone this repository
  • Download from GitHub
  • Clone: git clone https://github.com/lvgl/lv_lib_bmp.git
• Include the library: #include "lv_lib_bmp/lv_bmp.h"
• Initalize the decocer with lv_bmp_init();
• Test with the following code:

    lv_obj_t * img = lv_img_create(lv_scr_act());
    lv_img_set_src(img, "S/path/to/image.bmp");

Limitations

• BMP files can be loaded only from file. If you want to store them in flash it's better to convert them to C array with LVGL's image converter.
• The BMP files color format needs to match with LV_COLOR_DEPTH. Use GIMP to save the image in the required format. RGB888 and ARGB888 works with LV_COLOR_DEPTH 32
• Palette is not supported.