Class unaMemoryStream

Unit

unaClasses

Declaration

type unaMemoryStream = class(unaAbstractStream)

Description

Stream is stored in memory. This implementation does not support seeking.

Hierarchy

• TObject
• unaObject
• unaAbstractStream
• unaMemoryStream

Overview

Methods

	destructor Destroy(); override;
	function compressChunks(): int;
	function firstChunk(): unaStreamChunk;
	function firstChunkRemove(): bool;
	function firstChunkSize(): int;
	function getCrc32(): unsigned;
	function clear2(): unaAbstractStream; override;
	function getAvailableSize2(): int; override;
	function getPosition(): int; override;
	function read2(buf: pointer; size: int; remove: bool = true): int; override;
	function remove2(size: int): int; override;
	function seek(position: int; fromBeggining: bool = true): int; overload; override;
	function seekD(delta: int): int; overload; override;
	function write2(buf: pointer; size: int): int; override;
	procedure AfterConstruction(); override;

Properties

property maxCacheSize: unsigned read f_maxCacheSize write f_maxCacheSize default 10;

Description

Methods

	destructor Destroy(); override;

	function compressChunks(): int;
Moves all chunks into first one. Returns first chunk size ( = stream size)

	function firstChunk(): unaStreamChunk;

	function firstChunkRemove(): bool;

	function firstChunkSize(): int;

	function getCrc32(): unsigned;

	function clear2(): unaAbstractStream; override;

	function getAvailableSize2(): int; override;

	function getPosition(): int; override;

	function read2(buf: pointer; size: int; remove: bool = true): int; override;

	function remove2(size: int): int; override;

	function seek(position: int; fromBeggining: bool = true): int; overload; override;

	function seekD(delta: int): int; overload; override;

	function write2(buf: pointer; size: int): int; override;

	procedure AfterConstruction(); override;

Properties

	property maxCacheSize: unsigned read f_maxCacheSize write f_maxCacheSize default 10;
Number of chunks to keep in memory for later re-use.

(c) 2012 Lake of Soft