Parameters that Kanzi passes to third-party image libraries when loading image files. More...
#include <kanzi/core.ui/application/application_properties.hpp>
Public Attributes | |
| size_t | libJPEGMaxMemory |
| Sets the maximum amount of memory in bytes to allocate for a JPEG object in libjpeg. | |
| optional< uint32_t > | libPNGChunkCacheMax |
| Sets the maximum number of ancillary chunks in libpng. | |
| optional< uint32_t > | libPNGChunkMallocMax |
| Sets the maximum amount of memory in bytes to allocate for a chunk in libpng. | |
Parameters that Kanzi passes to third-party image libraries when loading image files.
| size_t kanzi::ApplicationProperties::ImageLoadParameters::libJPEGMaxMemory |
Sets the maximum amount of memory in bytes to allocate for a JPEG object in libjpeg.
This parameter corresponds to the libjpeg parameter jpeg_memory_mgr::max_memory_to_use. Note that this limit affects only the space used for virtual-array buffers and is not a guaranteed maximum but merely advisory.
The default value 0 sets no limit on the amount of memory to allocate.
| optional<uint32_t> kanzi::ApplicationProperties::ImageLoadParameters::libPNGChunkCacheMax |
Sets the maximum number of ancillary chunks in libpng.
This parameter corresponds to the libpng function png_set_chunk_cache_max().
The PNG specification does not limit the number of ancillary chunks allowed in a PNG datastream. By default libpng imposes a limit of a total of 1000 sPLT, tEXt, iTXt, zTXt, and unknown chunks to be stored.
If you do not set this optional parameter, Kanzi keeps the libpng defaults. To not limit the number of ancillary chunks, set this parameter to 0x7fffffffL.
| optional<uint32_t> kanzi::ApplicationProperties::ImageLoadParameters::libPNGChunkMallocMax |
Sets the maximum amount of memory in bytes to allocate for a chunk in libpng.
This parameter corresponds to the libpng function png_set_chunk_malloc_max().
By default libpng imposes a limit of 8 MB (8,000,000 bytes) on the amount of memory that a chunk other than IDAT can occupy, originally or when decompressed.
If you do not set this optional parameter, Kanzi keeps the libpng defaults.