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3 An image can be a file or a variable which stores the bitmap itself and some metadata.
6 You can store images in two places
25 You can add an interface to a standard file system (FAT32 on SD card) or you create your simple fil…
37 … This is ideal for bitmaps similar to fonts where the whole image is one color that can be altered.
57 You can store images in a *Raw* format to indicate that it's not encoded with one of the built-in c…
65 You can add images to LVGL in two ways:
77 …support](#files). Choosing a variable will generate a standard C file that can be linked into your…
89 If you are generating an image at run-time, you can craft an image variable to display it using LVG…
105 If the color format is `LV_IMG_CF_TRUE_COLOR_ALPHA` you can set `data_size` like `80 * 60 * LV_IMG_…
127 As you can see in the [Color formats](#color-formats) section, LVGL supports several built-in image…
133 …ge: either store a decoded image or set it to `NULL` to indicate the image can be read line-by-lin…
137 …can add any number of image decoders. When an image needs to be drawn, the library will try all th…
149 …ould use `LV_IMG_CF_USER_ENCODED_0..7` color formats. However, the library can draw images only in…
173 * @param src can be file name or pointer to a C array
175 * @return LV_RES_OK: no error; LV_RES_INV: can't get the info
194 * @return LV_RES_OK: no error; LV_RES_INV: can't get the info
216 …* Required only if the "open" function can't open the whole decoded pixel array. (dsc->img_data ==…
254 However, if you can open the image, a pointer to the decoded *True color* image should be set in `d…
258 However, it can decode one line of the image without decoding the whole image, you can save memory …
264 …y if you try and draw a raw image (i.e. using the `lv_img` object) but you can use them manually t…
267 `frame_id` can be used if the image to open is an animation.
288 … number of images. Caching means some images will be left open, hence LVGL can quickly access them…
293 The number of cache entries can be defined with `LV_IMG_CACHE_DEF_SIZE` in *lv_conf.h*. The default…
295 The size of the cache can be changed at run-time with `lv_img_cache_set_size(entry_num)`.
298 When you use more images than cache entries, LVGL can't cache all the images. Instead, the library …
302 If you want or need to override LVGL's measurement, you can manually set the *time to open* value i…