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Compression

API > API/Runtime > API/Runtime/Core

Classes

  Type Name Description
Public class FCompressedBuffer A compressed buffer stores compressed data in a self-contained format.  
Public class FCompressedBufferReader A type that stores the state needed to decompress a compressed buffer.  
Public class FCompressedBufferReaderSourceScope A type that sets the source of a reader upon construction and resets it upon destruction.  
Public struct FDecoderContext A reusable context for the compressed buffer decoder.  
Public struct LZ4_stream_t_internal    
Public struct LZ4_stream_u    
Public struct LZ4_streamDecode_t_internal LZ4_streamDecode_t : Never ever use below internal definitions directly ! These definitions are not API/ABI safe, and may change in future versions.  
Public struct LZ4_streamDecode_u    
Public struct LZ4_streamHC_u    
Public struct LZ4HC_CCtx_internal    

Enums

  Type Name Description
Public enum FOodleDataCompression::ECompressionCommonUsage OodleDataCompression : Unreal API for direct access to Oodle Data lossless data compression for manual encoding (not in Pak/iostore) NOTE : for any data that will be stored to disk, you should not be compressing it yourself! allow the pak/iostore system to choose the compressor!  
Public enum FOodleDataCompression::ECompressionLevel ECompressionLevel : Choose the Oodle Compression Level this mostly trades encode speed vs compression ratio decode speed is determined by choice of compressor (ECompressor)  
Public enum FOodleDataCompression::ECompressor ECompressor : Choose the Oodle Compressor this mostly trades decompression speed vs compression ratio encode speed is determined by ECompressionLevel , not the compressor choice.  

Functions

  Type Name Description
Public function bool Compress an arbitrary data pointer, replacing existing data.
Public function bool

FOodleCompressedArray::CompressTArray64 ( TArray64< uint8 >& OutCompressed,
const TArray64< T >& InBuffer,
FOodleDataCompression::ECompressor InCompressor,
FOodleDataCompression::ECompressionLevel InLevel
)

  
Public function bool

FOodleCompressedArray::DecompressToTArray ( TArray< T >& OutDecompressed,
TArray< uint8 > const& InCompressed
)

 Decompress to a TArray.
Public function bool

FOodleCompressedArray::DecompressToTArray64 ( TArray64< T >& OutDecompressed,
TArray64< uint8 > const& InCompressed
)

  
Public function int32

FOodleCompressedArray::PeekSizes ( TArray< uint8 > const& InCompressed,
int32& OutCompressedSize,
int32& OutDecompressedSize
)

 Provides access to the compressed and decompressed sizes.
Public function int32

FOodleCompressedArray::PeekSizes64 ( TArray64< uint8 > const& InCompressed,
int64& OutCompressedSize,
int64& OutDecompressedSize
)

  
Public function bool  

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