xref: /xsrc/external/mit/xf86-video-vboxvideo/dist/src/HGSMIMemAlloc.h

/* $Id: HGSMIMemAlloc.h,v 1.1.1.1 2019/01/09 23:50:31 mrg Exp $ */
/*
 * Copyright (C) 2017 Oracle Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 */


/* In builds inside of the VirtualBox source tree we override the default
 * HGSMIMemAlloc.h using -include, therefore this define must match the one
 * there. */
#ifndef ___VBox_Graphics_HGSMIMemAlloc_h
#define ___VBox_Graphics_HGSMIMemAlloc_h

#include "HGSMIDefs.h"
#include "VBoxVideoIPRT.h"

#define HGSMI_MA_DESC_ORDER_BASE UINT32_C(5)

#define HGSMI_MA_BLOCK_SIZE_MIN (UINT32_C(1) << (HGSMI_MA_DESC_ORDER_BASE + 0))

typedef struct HGSMIMADATA
{
    HGSMIAREA area;
    bool fAllocated;
} HGSMIMADATA;

RT_C_DECLS_BEGIN

int HGSMIMAInit(HGSMIMADATA *pMA, const HGSMIAREA *pArea,
                HGSMIOFFSET *paDescriptors, uint32_t cDescriptors, HGSMISIZE cbMaxBlock,
                const HGSMIENV *pEnv);
void HGSMIMAUninit(HGSMIMADATA *pMA);

void *HGSMIMAAlloc(HGSMIMADATA *pMA, HGSMISIZE cb);
void HGSMIMAFree(HGSMIMADATA *pMA, void *pv);

RT_C_DECLS_END

#endif /* !___VBox_Graphics_HGSMIMemAlloc_h */