class
JpegImporterJPEG importer plugin.
Supports RGB or grayscale images with 8 bits per channel. The images are imported with PixelFormat::
Usage
This plugin depends on the Trade and libJPEG libraries and is built if MAGNUM_WITH_JPEGIMPORTER
is enabled when building Magnum Plugins. To use as a dynamic plugin, load "JpegImporter"
via Corrade::
Additionally, if you're using Magnum as a CMake subproject, bundle the magnum-plugins repository and do the following. Using libJPEG itself as a CMake subproject isn't tested at the moment, so you need to provide it as a system dependency and point CMAKE_PREFIX_PATH
to its installation dir if necessary.
set(MAGNUM_WITH_JPEGIMPORTER ON CACHE BOOL "" FORCE) add_subdirectory(magnum-plugins EXCLUDE_FROM_ALL) # So the dynamically loaded plugin gets built implicitly add_dependencies(your-app MagnumPlugins::JpegImporter)
To use as a static plugin or as a dependency of another plugin with CMake, put FindMagnumPlugins.cmake into your modules/
directory, request the JpegImporter
component of the MagnumPlugins
package and link to the MagnumPlugins::JpegImporter
target:
find_package(MagnumPlugins REQUIRED JpegImporter) # ... target_link_libraries(your-app PRIVATE MagnumPlugins::JpegImporter)
See Downloading and building plugins, Plugin usage with CMake, Loading and using plugins and File format support for more information.
libJPEG implementations
While some systems (such as macOS) still ship only with the vanilla libJPEG, you can get a much better decoding performance by using libjpeg-turbo.
Base classes
- class AbstractImporter
- Base for importer plugins.
Constructors, destructors, conversion operators
- JpegImporter() explicit
- Default constructor.
-
JpegImporter(PluginManager::
AbstractManager& manager, const Containers:: StringView& plugin) explicit - Plugin manager constructor.