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57 lines
1.3 KiB
ReStructuredText
57 lines
1.3 KiB
ReStructuredText
.. _libjpeg:
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=====================
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libjpeg-turbo decoder
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=====================
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**libjpeg-turbo** is a JPEG image codec that uses SIMD instructions to accelerate baseline JPEG compression and decompression on x86,
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x86-64, Arm, PowerPC, and MIPS systems, as well as progressive JPEG compression on x86, x86-64, and Arm systems.
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Detailed introduction: https://libjpeg-turbo.org
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Library source: https://github.com/libjpeg-turbo/libjpeg-turbo
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.. _libjpeg_install:
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Install
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-------
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.. code:: bash
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sudo apt install libjpeg-turbo8-dev
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Add libjpeg-turbo to your project
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---------------------------------
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.. code:: cmake
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find_package(JPEG REQUIRED)
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include_directories(${JPEG_INCLUDE_DIR})
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target_link_libraries(${PROJECT_NAME} PRIVATE ${JPEG_LIBRARIES})
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.. _libjpeg_usage:
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Usage
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-----
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Enable :c:macro:`LV_USE_LIBJPEG_TURBO` in ``lv_conf.h``.
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See the examples below.
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It should be noted that each image of this decoder needs to consume ``image width x image height x 3`` bytes of RAM,
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and it needs to be combined with the :ref:`overview_image_caching` feature to ensure that the memory usage is within a reasonable range.
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.. _libjpeg_example:
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Example
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-------
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.. include:: ../examples/libs/libjpeg_turbo/index.rst
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.. _libjpeg_api:
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API
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---
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:ref:`libjpeg_turbo`
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