[LVGL] Can't generate C-code for the JPG images under LVGL 9.4.0

[zhangxq0521]

Describe the bug
The latest EEZ-STUDIO (0.29.0) can't support generation of bitmap C-array under both windows and LInux.

bitmap_test_lvgl9.4.0.zip

To Reproduce
Steps to reproduce the behavior:

1. Create one "LVGL with EEZ flow" project (LVGL=9.4.0).
2. In general setting page, uncheck “Embed bitmaps inside eez-project file” and "Embed fonts inside eez-project file" and save the project.

3. In build setting page, check "store image and font files in a seperate folder". 4. Import one jpeg-format picture in "bitmap" window. 5. Build the project. 6. See error:

Configuration: Default
    Error generating bitmap file 'ui_image_bt_welcome.c': Error: ENOENT: no such file or directory, open 'C:\Users\samuel\AppData\Local\Programs\eezstudio\data:image\jpg;base64,

Expected behavior
I tried the same operations in a project for LVGL 8.4 -still using EEZ-STUDIO 0.29.0, the bitmap C-code files could be generated.

flow4-lvgl8.4----PASSED.zip

Screenshots

Desktop (please complete the following information):

• OS: windows11-/ubuntu24.0.3(WSL2）

LVGL version (if used)

• 9.4.0

Additional context
NO

Disclaimer
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[zhangxq0521]

I tried to import a bitmap based on a "PNG" -format file.

To my astonishement, it works.

bitmap_test_lvgl9.4.0-2.zip

[mvladic]

Yes, only PNG images are supported for LVGL versions 9.x . I just fixed that and now it also works for the JPG images.

[zhangxq0521]

@mvladic

Thanks for the prompt response.

I'll close the bug ticket once I could import one JPEG-format picture into a bitmap object with next release: 0.30.0