libjpeg-turbo Decoder
libjpeg-turbo is an LVGL interface to the libjpeg-turbo library — a JPEG image codec that uses SIMD instructions to accelerate baseline JPEG compression and decompression on x86, x86-64, Arm, PowerPC, and MIPS systems, as well as progressive JPEG compression on x86, x86-64, and Arm systems.
On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal.
For a detailed introduction, see: https://libjpeg-turbo.org .
Library source: https://github.com/libjpeg-turbo/libjpeg-turbo
Install
sudo apt install libjpeg-turbo8-dev
Adding libjpeg-turbo to Your Project
Cmake:
find_package(JPEG REQUIRED)
include_directories(${JPEG_INCLUDE_DIR})
target_link_libraries(${PROJECT_NAME} PRIVATE ${JPEG_LIBRARIES})
Usage
Set LV_USE_LIBJPEG_TURBO in lv_conf.h to 1.
See the examples below.
It should be noted that each image decoded needs to consume:
image width × image height × 3
bytes of RAM, and it needs to be combined with the Image caching feature to ensure that the memory usage is within a reasonable range.
Example
Load a JPG image
C code
View on GitHub