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SourceVuESP-IDF Framework and Examplesi80_controller samplelv_image_decoder_get_info()

lv_image_decoder_get_info() function

GLOBAL PROTOTYPES Get information about an image. Try the created image decoder one by one. Once one is able to get info that info will be used.

Syntax

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Summary

Declaration

Definition

from lv_image_decoder.h:93

lv_result_t lv_image_decoder_get_info(const void * src, lv_image_header_t * header);

Implemented in lv_image_decoder.c:79

Arguments

Argument

Description

src

the image source. Can be 1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_drv_register()`) 2) Variable: Pointer to an `lv_image_dsc_t` variable 3) Symbol: E.g. `LV_SYMBOL_OK`

the image info will be stored here

Return value

LV_RESULT_OK: success; LV_RESULT_INVALID: wasn't able to get info about the image

References

Code

Location

Referrer

lv_result_t lv_image_decoder_get_info(const void * src, lv_image_header_t * header)

lv_image_decoder.c:79

lv_result_t lv_image_decoder_get_info(const void * src, lv_image_header_t * header);

lv_image_decoder.h:93

lv_result_t res = lv_image_decoder_get_info(new_image_dsc->src, &new_image_dsc->header);

lv_draw_image.c:107

lv_draw_image()

res = lv_image_decoder_get_info(dsc->bg_image_src, &header);

lv_draw_rect.c:200

lv_draw_rect()

lv_result_t res = lv_image_decoder_get_info(dropdown->symbol, &header);

lv_dropdown.c:896

draw_main()

lv_result_t res = lv_image_decoder_get_info(&img_star, &header);

lv_example_buttonmatrix_2.c:53

event_cb()

lv_result_t res = lv_image_decoder_get_info(src, &header);

lv_image.c:185

lv_image_set_src()

lv_result_t res = lv_image_decoder_get_info(src, &info->header);

lv_imagebutton.c:331

update_src_info()

Call Tree

lv_image_decoder_get_info() is called by 6 functions and calls 3 functions:

lv_image_decoder_get_info()

lv_memzero()

lv_image_src_get_type()

image_decoder_get_info()

Data Use

lv_image_decoder_get_info() reads 2 variables and writes 2 variables:

lv_result_t::LV_RESULT_INVALID

lv_result_t::LV_RESULT_OK

lv_image_decoder_get_info()

lv_image_decoder_dsc_t::src

lv_image_decoder_dsc_t::src_type

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