region.h
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/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
**************************************************************************/
/**************************************************************************
*
* Module: region.h
*
* $Revision: 1.1.1.2 $
* $Date: 2002/10/29 08:06:34 $
* $Author: blythe $
* $Source: /root/leakn64/depot/rf/sw/bbplayer/include/region.h,v $
*
* Description:
* This file contains macros and structure definitions for the region
* library.
*
**************************************************************************/
#ifndef _REGION_H_
#define _REGION_H_
#ifdef _LANGUAGE_C_PLUS_PLUS
extern "C" {
#endif
#include <PR/ultratypes.h>
/***************************************
*
* Global defines
*
*/
/* Alignment sizes */
#define ALIGNSZ (sizeof(long long)) /* 8 bytes */
#define ALIGNOFFST (ALIGNSZ-1)
/* size for storing index to free buffer */
#define BUF_CTRL_SIZE ALIGNSZ
/* Max bufcount = 32K */
#define MAX_BUFCOUNT 0x8000
/* code for last free buffer */
#define BUF_FREE_WO_NEXT 0x8000
/*
* Global defines for alignment size (default is 8-byte alignment)
*/
#define OS_RG_ALIGN_2B 2 /* 2 bytes = 16-bit alignment */
#define OS_RG_ALIGN_4B 4 /* 4 bytes = 32-bit alignment */
#define OS_RG_ALIGN_8B 8 /* 8 bytes = 64-bit alignment */
#define OS_RG_ALIGN_16B 16 /* 16 bytes = 128-bit alignment */
#define OS_RG_ALIGN_DEFAULT OS_RG_ALIGN_8B
/***************************************
*
* Macro definitions
*
*/
/* Perform alignment on input 's' */
#define ALIGN(s, align) (((u32)(s) + ((align)-1)) & ~((align)-1))
/***************************************
*
* Typedefs & structure definitions
*
*/
/*
* Structure for region header/control area
*/
typedef struct _Region_s {
u8 *r_startBufferAddress; /* start address to data buffer */
u8 *r_endAddress; /* end address of region */
s32 r_bufferSize; /* size of buffers for this region */
s32 r_bufferCount; /* up to 32K entries; MSB is used for
setting end-of-list/used */
u16 r_freeList; /* point to array index of first
available memory buffer */
u16 r_alignSize; /* alignment size (# of bytes) */
} OSRegion;
/*
* Macro to simplify accessing region header structure
*/
#define RP(x) rp->r_##x
/***************************************
*
* Function prototypes
*
*/
extern void *osCreateRegion(void *, u32, u32, u32);
extern void *osMalloc(void *);
extern void osFree(void *, void *);
extern s32 osGetRegionBufCount(void *);
extern s32 osGetRegionBufSize(void *);
#ifdef _LANGUAGE_C_PLUS_PLUS
}
#endif
#endif /* _REGION_H_ */