sbgSplitBuffer.h File Reference

Helper methods used to handle a splittable buffer. More...

#include <sbgCommon.h>

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Classes
struct	_SbgSplitBuffer

Typedefs
typedef struct _SbgSplitBuffer	SbgSplitBuffer

Functions
SBG_INLINE void *	sbgSplitBufferGetSubBuffer (const SbgSplitBuffer *pSplitBuffer, size_t subBufferIdx)
SBG_INLINE size_t	sbgSplitBufferGetSubBufferNbr (const SbgSplitBuffer *pSplitBuffer)
SBG_INLINE size_t	sbgSplitBufferGetSubBufferOffset (const SbgSplitBuffer *pSplitBuffer, size_t subBufferIdx)
SBG_INLINE size_t	sbgSplitBufferGetSubBufferSize (const SbgSplitBuffer *pSplitBuffer, size_t subBufferIdx)
SBG_INLINE void	sbgSplitBufferInitForRead (SbgSplitBuffer *pSplitBuffer, const void *pBuffer, size_t bufferSize, size_t subBufferSize)
SBG_INLINE void	sbgSplitBufferInitForWrite (SbgSplitBuffer *pSplitBuffer, void *pBuffer, size_t bufferSize, size_t subBufferSize)

Detailed Description

Helper methods used to handle a splittable buffer.

Author

SBG Systems (Maxime Renaudet)

Date

19 November 2013

Copyright Notice

Copyright (C) 2007-2013, SBG Systems SAS. All rights reserved.

This source code is intended for use only by SBG Systems SAS and those that have explicit written permission to use it from SBG Systems SAS.

THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.

Definition in file sbgSplitBuffer.h.

Typedef Documentation

SbgSplitBuffer

typedef struct _SbgSplitBuffer SbgSplitBuffer

Defines the ECom transfer states

Function Documentation

sbgSplitBufferGetSubBuffer()

SBG_INLINE void* sbgSplitBufferGetSubBuffer	(	const SbgSplitBuffer *	pSplitBuffer,
		size_t	subBufferIdx
	)

Get one sub buffer given its index.

Parameters

[in]	pSplitBuffer	Valid pointer to a Split Buffer instance.
[in]	subBufferIdx	Index of the sub buffer required.

Returns

Pointer to the sub buffer or NULL if the subBuffer index is invalid.

Definition at line 130 of file sbgSplitBuffer.h.

sbgSplitBufferGetSubBufferNbr()

SBG_INLINE size_t sbgSplitBufferGetSubBufferNbr

(

const SbgSplitBuffer *

pSplitBuffer

)

Returns the number of sub buffers that compose the whole buffer.

Parameters

[in]

pSplitBuffer

Valid pointer to a Split Buffer instance.

Returns

The number of sub buffer the buffer has or 0 if there is an error.

Definition at line 111 of file sbgSplitBuffer.h.

sbgSplitBufferGetSubBufferOffset()

SBG_INLINE size_t sbgSplitBufferGetSubBufferOffset	(	const SbgSplitBuffer *	pSplitBuffer,
		size_t	subBufferIdx
	)

Return the offset in bytes of a sub buffer from the start of the buffer.

Parameters

[in]	pSplitBuffer	Valid pointer to a Split Buffer instance.
[in]	subBufferIdx	Index of the sub buffer required.

Returns

Offset to the sub buffer or 0 if the subBuffer index is invalid.

Definition at line 162 of file sbgSplitBuffer.h.

sbgSplitBufferGetSubBufferSize()

SBG_INLINE size_t sbgSplitBufferGetSubBufferSize	(	const SbgSplitBuffer *	pSplitBuffer,
		size_t	subBufferIdx
	)

Get the size of a sub buffer given its index.

Parameters

[in]	pSplitBuffer	Valid pointer to a Split Buffer instance.
[in]	subBufferIdx	Index of the sub buffer required.

Returns

The size of the sub buffer of index subBufferIdx, or 0 if the subBuffer index is invalid.

Definition at line 194 of file sbgSplitBuffer.h.

sbgSplitBufferInitForRead()

SBG_INLINE void sbgSplitBufferInitForRead	(	SbgSplitBuffer *	pSplitBuffer,
		const void *	pBuffer,
		size_t	bufferSize,
		size_t	subBufferSize
	)

Initialize a split buffer for read operations.

Parameters

[in]	pSplitBuffer	Pointer to an allocated split buffer instance.
[in]	pBuffer	The buffer that needs to be split (doesn't take the ownership).
[in]	bufferSize	The total size of the buffer in bytes.
[in]	subBufferSize	The size of each sub buffer in bytes.

Definition at line 59 of file sbgSplitBuffer.h.

sbgSplitBufferInitForWrite()

SBG_INLINE void sbgSplitBufferInitForWrite	(	SbgSplitBuffer *	pSplitBuffer,
		void *	pBuffer,
		size_t	bufferSize,
		size_t	subBufferSize
	)

Initialize a split buffer for write operations.

Parameters

[in]	pSplitBuffer	Pointer to an allocated split buffer instance.
[in]	pBuffer	The buffer that needs to be split (doesn't take the ownership).
[in]	bufferSize	The total size of the buffer in bytes.
[in]	subBufferSize	The size of each sub buffer in bytes.

Definition at line 86 of file sbgSplitBuffer.h.