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/usr/include/xorg/xf86fbman.h is in xserver-xorg-dev 2:1.11.4-0ubuntu10.17.

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/*
 * Copyright (c) 1998-2001 by The XFree86 Project, Inc.
 *
 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */

#ifndef _XF86FBMAN_H
#define _XF86FBMAN_H


#include "scrnintstr.h"
#include "regionstr.h"


#define FAVOR_AREA_THEN_WIDTH		0
#define FAVOR_AREA_THEN_HEIGHT		1
#define FAVOR_WIDTH_THEN_AREA		2
#define FAVOR_HEIGHT_THEN_AREA		3

#define PRIORITY_LOW			0
#define PRIORITY_NORMAL			1
#define PRIORITY_EXTREME		2


typedef struct _FBArea {
   ScreenPtr    pScreen;
   BoxRec   	box;
   int 		granularity;
   void 	(*MoveAreaCallback)(struct _FBArea*, struct _FBArea*);
   void 	(*RemoveAreaCallback)(struct _FBArea*);
   DevUnion 	devPrivate;
} FBArea, *FBAreaPtr;

typedef struct _FBLinear {
   ScreenPtr    pScreen;
   int		size;
   int 		offset;
   int 		granularity;
   void 	(*MoveLinearCallback)(struct _FBLinear*, struct _FBLinear*);
   void 	(*RemoveLinearCallback)(struct _FBLinear*);
   DevUnion 	devPrivate;
} FBLinear, *FBLinearPtr;

typedef void (*FreeBoxCallbackProcPtr)(ScreenPtr, RegionPtr, pointer);
typedef void (*MoveAreaCallbackProcPtr)(FBAreaPtr, FBAreaPtr);
typedef void (*RemoveAreaCallbackProcPtr)(FBAreaPtr);

typedef void (*MoveLinearCallbackProcPtr)(FBLinearPtr, FBLinearPtr);
typedef void (*RemoveLinearCallbackProcPtr)(FBLinearPtr);


typedef struct {
    FBAreaPtr (*AllocateOffscreenArea)(
		ScreenPtr pScreen, 
		int w, int h,
		int granularity,
		MoveAreaCallbackProcPtr moveCB,
		RemoveAreaCallbackProcPtr removeCB,
		pointer privData);
    void      (*FreeOffscreenArea)(FBAreaPtr area);
    Bool      (*ResizeOffscreenArea)(FBAreaPtr area, int w, int h);
    Bool      (*QueryLargestOffscreenArea)(
		ScreenPtr pScreen,
		int *width, int *height,
		int granularity,
		int preferences,
		int priority);
    Bool      (*RegisterFreeBoxCallback)( 
		ScreenPtr pScreen,  
		FreeBoxCallbackProcPtr FreeBoxCallback,
		pointer devPriv);
/* linear functions */
    FBLinearPtr (*AllocateOffscreenLinear)(
		ScreenPtr pScreen, 
		int size,
		int granularity,
		MoveLinearCallbackProcPtr moveCB,
		RemoveLinearCallbackProcPtr removeCB,
		pointer privData);
    void      (*FreeOffscreenLinear)(FBLinearPtr area);
    Bool      (*ResizeOffscreenLinear)(FBLinearPtr area, int size);
    Bool      (*QueryLargestOffscreenLinear)(
		ScreenPtr pScreen,
		int *size,
		int granularity,
		int priority);
    Bool      (*PurgeOffscreenAreas) (ScreenPtr);
} FBManagerFuncs, *FBManagerFuncsPtr;


extern _X_EXPORT Bool xf86RegisterOffscreenManager(
    ScreenPtr pScreen, 
    FBManagerFuncsPtr funcs
);

extern _X_EXPORT Bool
xf86InitFBManagerRegion(
    ScreenPtr pScreen, 
    RegionPtr ScreenRegion
);

extern _X_EXPORT Bool
xf86InitFBManagerArea(
    ScreenPtr pScreen,
    int PixalArea,
    int Verbosity
);

extern _X_EXPORT Bool
xf86InitFBManager(
    ScreenPtr pScreen, 
    BoxPtr FullBox
);

extern _X_EXPORT Bool
xf86InitFBManagerLinear(
    ScreenPtr pScreen, 
    int offset,
    int size
);

extern _X_EXPORT Bool
xf86FBManagerRunning(
    ScreenPtr pScreen
);

extern _X_EXPORT FBAreaPtr
xf86AllocateOffscreenArea (
   ScreenPtr pScreen, 
   int w, int h,
   int granularity,
   MoveAreaCallbackProcPtr moveCB,
   RemoveAreaCallbackProcPtr removeCB,
   pointer privData
);

extern _X_EXPORT FBAreaPtr
xf86AllocateLinearOffscreenArea (
   ScreenPtr pScreen, 
   int length,
   int granularity,
   MoveAreaCallbackProcPtr moveCB,
   RemoveAreaCallbackProcPtr removeCB,
   pointer privData
);

extern _X_EXPORT FBLinearPtr
xf86AllocateOffscreenLinear (
   ScreenPtr pScreen, 
   int length,
   int granularity,
   MoveLinearCallbackProcPtr moveCB,
   RemoveLinearCallbackProcPtr removeCB,
   pointer privData
);

extern _X_EXPORT void xf86FreeOffscreenArea(FBAreaPtr area);
extern _X_EXPORT void xf86FreeOffscreenLinear(FBLinearPtr area);

extern _X_EXPORT Bool
xf86ResizeOffscreenArea(
   FBAreaPtr resize,
   int w, int h
);

extern _X_EXPORT Bool
xf86ResizeOffscreenLinear(
   FBLinearPtr resize,
   int size
);


extern _X_EXPORT Bool
xf86RegisterFreeBoxCallback(
    ScreenPtr pScreen,  
    FreeBoxCallbackProcPtr FreeBoxCallback,
    pointer devPriv
);

extern _X_EXPORT Bool
xf86PurgeUnlockedOffscreenAreas(
    ScreenPtr pScreen
);


extern _X_EXPORT Bool
xf86QueryLargestOffscreenArea(
    ScreenPtr pScreen,
    int *width, int *height,
    int granularity,
    int preferences,
    int priority
);

extern _X_EXPORT Bool
xf86QueryLargestOffscreenLinear(
    ScreenPtr pScreen,
    int *size,
    int granularity,
    int priority
);


#endif /* _XF86FBMAN_H */