#include <Decoder.h>

Classes
struct	BasketValues

Public Member Functions
	BranchDecoder (ByteSource &source, Options const &options)

std::string const &	url () const

void	decodeValues (BranchInfo const &branch, uint8_t *dst, size_t nbytes)

void	decodeVLAValues (BranchInfo const &branch, std::span< const int32_t > offsets, uint8_t *dst, size_t nbytes)

void	decodeBooleans (BranchInfo const &branch, uint8_t *bitmap, size_t nbytes)

std::vector< int32_t >	decodeOffsets (BranchInfo const &sizeBranch)
	Decodes a <col>_size branch into entries + 1 int32 offsets.

Static Public Attributes
static constexpr size_t	kBooleanWindow = 64 * 1024
	Size of the boolean window, the only decode-side scratch memory.

Detailed Description

Decodes the baskets of a branch straight into caller-owned memory (a shared memory slice, or a heap buffer in tools and tests). Values are decompressed into the destination, stopping at the end of each basket's value region, and byteswapped there: no intermediate decode buffer.

Definition at line 31 of file Decoder.h.

Constructor & Destructor Documentation

◆ BranchDecoder()

o2::aod::native::BranchDecoder::BranchDecoder	(	ByteSource &	source,
		Options const &	options
	)

Definition at line 94 of file Decoder.cxx.

Member Function Documentation

◆ decodeBooleans()

void o2::aod::native::BranchDecoder::decodeBooleans	(	BranchInfo const &	branch,
		uint8_t *	bitmap,
		size_t	nbytes
	)

Booleans (one byte each on disk) bit-packed into bitmap, which is zeroed first. nbytes is the full size of the bitmap.

Definition at line 250 of file Decoder.cxx.

◆ decodeOffsets()

std::vector< int32_t > o2::aod::native::BranchDecoder::decodeOffsets ( BranchInfo const & sizeBranch )

Decodes a <col>_size branch into entries + 1 int32 offsets.

Definition at line 276 of file Decoder.cxx.

◆ decodeValues()

void o2::aod::native::BranchDecoder::decodeValues	(	BranchInfo const &	branch,
		uint8_t *	dst,
		size_t	nbytes
	)

Values of a scalar or fixed-size array branch, dst holding exactly entries × fixedLen × element size bytes.

Definition at line 209 of file Decoder.cxx.

◆ decodeVLAValues()

void o2::aod::native::BranchDecoder::decodeVLAValues	(	BranchInfo const &	branch,
		std::span< const int32_t >	offsets,
		uint8_t *	dst,
		size_t	nbytes
	)

Values of a variable-length array branch. offsets are the entries + 1 offsets from decodeOffsets() on its count branch.

Definition at line 226 of file Decoder.cxx.

◆ url()

std::string const & o2::aod::native::BranchDecoder::url ( ) const

inline

Definition at line 38 of file Decoder.h.

Member Data Documentation

◆ kBooleanWindow

constexpr size_t o2::aod::native::BranchDecoder::kBooleanWindow = 64 * 1024

staticconstexpr

Size of the boolean window, the only decode-side scratch memory.

Definition at line 35 of file Decoder.h.

The documentation for this class was generated from the following files:

/home/runner/work/AliceO2/AliceO2/Framework/AODNative/include/AODNative/Decoder.h
/home/runner/work/AliceO2/AliceO2/Framework/AODNative/src/Decoder.cxx

Classes

Public Member Functions

Static Public Attributes