563db909bc
Also avoids leaving invalid pointers in structures if realloc had to
move them elsewhere to make them larger.
Found by parfait 1.1 code analyzer:
Memory leak of pointer 'newCallbacks' allocated with realloc(((char*)offman->FreeBoxesUpdateCallback), (8 * (offman->NumCallbacks + 1)))
at line 328 of hw/xfree86/common/xf86fbman.c in function 'localRegisterFreeBoxCallback'.
'newCallbacks' allocated at line 320 with realloc(((char*)offman->FreeBoxesUpdateCallback), (8 * (offman->NumCallbacks + 1))).
newCallbacks leaks when newCallbacks != NULL at line 327.
Memory leak of pointer 'newPrivates' allocated with realloc(((char*)offman->devPrivates), (8 * (offman->NumCallbacks + 1)))
at line 328 of hw/xfree86/common/xf86fbman.c in function 'localRegisterFreeBoxCallback'.
'newPrivates' allocated at line 324 with realloc(((char*)offman->devPrivates), (8 * (offman->NumCallbacks + 1))).
newPrivates leaks when newCallbacks == NULL at line 327.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
1434 lines
40 KiB
C
1434 lines
40 KiB
C
|
|
/*
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|
* Copyright (c) 1998-2001 by The XFree86 Project, Inc.
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*
|
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
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* 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:
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*
|
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* The above copyright notice and this permission notice shall be included in
|
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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|
* 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
|
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* the sale, use or other dealings in this Software without prior written
|
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* authorization from the copyright holder(s) and author(s).
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*/
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|
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "misc.h"
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#include "xf86.h"
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#include <X11/X.h>
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#include "scrnintstr.h"
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#include "regionstr.h"
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#include "xf86fbman.h"
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/*
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#define DEBUG
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*/
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static DevPrivateKeyRec xf86FBManagerKeyRec;
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static DevPrivateKey xf86FBManagerKey;
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Bool
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xf86RegisterOffscreenManager(ScreenPtr pScreen, FBManagerFuncsPtr funcs)
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{
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xf86FBManagerKey = &xf86FBManagerKeyRec;
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if (!dixRegisterPrivateKey(&xf86FBManagerKeyRec, PRIVATE_SCREEN, 0))
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return FALSE;
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dixSetPrivate(&pScreen->devPrivates, xf86FBManagerKey, funcs);
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return TRUE;
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}
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Bool
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xf86FBManagerRunning(ScreenPtr pScreen)
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{
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if (xf86FBManagerKey == NULL)
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return FALSE;
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|
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if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBManagerKey))
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return FALSE;
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return TRUE;
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}
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Bool
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xf86RegisterFreeBoxCallback(ScreenPtr pScreen,
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FreeBoxCallbackProcPtr FreeBoxCallback,
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pointer devPriv)
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{
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FBManagerFuncsPtr funcs;
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if (xf86FBManagerKey == NULL)
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return FALSE;
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if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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return (*funcs->RegisterFreeBoxCallback) (pScreen, FreeBoxCallback,
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devPriv);
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}
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FBAreaPtr
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xf86AllocateOffscreenArea(ScreenPtr pScreen,
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int w, int h,
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int gran,
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MoveAreaCallbackProcPtr moveCB,
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RemoveAreaCallbackProcPtr removeCB, pointer privData)
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{
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FBManagerFuncsPtr funcs;
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|
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if (xf86FBManagerKey == NULL)
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return NULL;
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if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return NULL;
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|
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return (*funcs->AllocateOffscreenArea) (pScreen, w, h, gran, moveCB,
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removeCB, privData);
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}
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FBLinearPtr
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xf86AllocateOffscreenLinear(ScreenPtr pScreen,
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int length,
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int gran,
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MoveLinearCallbackProcPtr moveCB,
|
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RemoveLinearCallbackProcPtr removeCB,
|
|
pointer privData)
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{
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FBManagerFuncsPtr funcs;
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|
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if (xf86FBManagerKey == NULL)
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return NULL;
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if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return NULL;
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return (*funcs->AllocateOffscreenLinear) (pScreen, length, gran, moveCB,
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removeCB, privData);
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}
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void
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xf86FreeOffscreenArea(FBAreaPtr area)
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{
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FBManagerFuncsPtr funcs;
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if (!area)
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return;
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|
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if (xf86FBManagerKey == NULL)
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return;
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if (!
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(funcs =
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(FBManagerFuncsPtr) dixLookupPrivate(&area->pScreen->devPrivates,
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xf86FBManagerKey)))
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return;
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(*funcs->FreeOffscreenArea) (area);
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return;
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}
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void
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xf86FreeOffscreenLinear(FBLinearPtr linear)
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{
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FBManagerFuncsPtr funcs;
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if (!linear)
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return;
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if (xf86FBManagerKey == NULL)
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return;
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if (!
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(funcs =
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(FBManagerFuncsPtr) dixLookupPrivate(&linear->pScreen->devPrivates,
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xf86FBManagerKey)))
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return;
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(*funcs->FreeOffscreenLinear) (linear);
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return;
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}
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Bool
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xf86ResizeOffscreenArea(FBAreaPtr resize, int w, int h)
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{
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FBManagerFuncsPtr funcs;
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if (!resize)
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return FALSE;
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if (xf86FBManagerKey == NULL)
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return FALSE;
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if (!
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(funcs =
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(FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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return (*funcs->ResizeOffscreenArea) (resize, w, h);
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}
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Bool
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xf86ResizeOffscreenLinear(FBLinearPtr resize, int size)
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{
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FBManagerFuncsPtr funcs;
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if (!resize)
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return FALSE;
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|
if (xf86FBManagerKey == NULL)
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return FALSE;
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if (!
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(funcs =
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(FBManagerFuncsPtr) dixLookupPrivate(&resize->pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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return (*funcs->ResizeOffscreenLinear) (resize, size);
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}
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Bool
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xf86QueryLargestOffscreenArea(ScreenPtr pScreen,
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int *w, int *h,
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int gran, int preferences, int severity)
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{
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FBManagerFuncsPtr funcs;
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*w = 0;
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*h = 0;
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if (xf86FBManagerKey == NULL)
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return FALSE;
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if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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return (*funcs->QueryLargestOffscreenArea) (pScreen, w, h, gran,
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preferences, severity);
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}
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Bool
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xf86QueryLargestOffscreenLinear(ScreenPtr pScreen,
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int *size, int gran, int severity)
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{
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|
FBManagerFuncsPtr funcs;
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*size = 0;
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if (xf86FBManagerKey == NULL)
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return FALSE;
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if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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|
return (*funcs->QueryLargestOffscreenLinear) (pScreen, size, gran,
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severity);
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}
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Bool
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xf86PurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
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{
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FBManagerFuncsPtr funcs;
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|
if (xf86FBManagerKey == NULL)
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|
return FALSE;
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|
if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBManagerKey)))
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return FALSE;
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|
return (*funcs->PurgeOffscreenAreas) (pScreen);
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}
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/************************************************************\
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|
Below is a specific implementation of an offscreen manager.
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\************************************************************/
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static DevPrivateKeyRec xf86FBScreenKeyRec;
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#define xf86FBScreenKey (&xf86FBScreenKeyRec)
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typedef struct _FBLink {
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FBArea area;
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struct _FBLink *next;
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} FBLink, *FBLinkPtr;
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|
|
typedef struct _FBLinearLink {
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FBLinear linear;
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int free; /* need to add free here as FBLinear is publicly accessible */
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FBAreaPtr area; /* only used if allocation came from XY area */
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struct _FBLinearLink *next;
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} FBLinearLink, *FBLinearLinkPtr;
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|
|
typedef struct {
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ScreenPtr pScreen;
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|
RegionPtr InitialBoxes;
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|
RegionPtr FreeBoxes;
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|
FBLinkPtr UsedAreas;
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int NumUsedAreas;
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|
FBLinearLinkPtr LinearAreas;
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|
CloseScreenProcPtr CloseScreen;
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|
int NumCallbacks;
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|
FreeBoxCallbackProcPtr *FreeBoxesUpdateCallback;
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|
DevUnion *devPrivates;
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|
} FBManager, *FBManagerPtr;
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|
|
static void
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|
SendCallFreeBoxCallbacks(FBManagerPtr offman)
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|
{
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int i = offman->NumCallbacks;
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while (i--) {
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(*offman->FreeBoxesUpdateCallback[i]) (offman->pScreen,
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offman->FreeBoxes,
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offman->devPrivates[i].ptr);
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}
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}
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|
static Bool
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localRegisterFreeBoxCallback(ScreenPtr pScreen,
|
|
FreeBoxCallbackProcPtr FreeBoxCallback,
|
|
pointer devPriv)
|
|
{
|
|
FBManagerPtr offman;
|
|
FreeBoxCallbackProcPtr *newCallbacks;
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|
DevUnion *newPrivates;
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|
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|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
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xf86FBScreenKey);
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newCallbacks = realloc(offman->FreeBoxesUpdateCallback,
|
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sizeof(FreeBoxCallbackProcPtr) *
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(offman->NumCallbacks + 1));
|
|
if (!newCallbacks)
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|
return FALSE;
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|
else
|
|
offman->FreeBoxesUpdateCallback = newCallbacks;
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|
|
newPrivates = realloc(offman->devPrivates,
|
|
sizeof(DevUnion) * (offman->NumCallbacks + 1));
|
|
if (!newPrivates)
|
|
return FALSE;
|
|
else
|
|
offman->devPrivates = newPrivates;
|
|
|
|
offman->FreeBoxesUpdateCallback[offman->NumCallbacks] = FreeBoxCallback;
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|
offman->devPrivates[offman->NumCallbacks].ptr = devPriv;
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|
offman->NumCallbacks++;
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|
|
|
SendCallFreeBoxCallbacks(offman);
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|
|
|
return TRUE;
|
|
}
|
|
|
|
static FBAreaPtr
|
|
AllocateArea(FBManagerPtr offman,
|
|
int w, int h,
|
|
int granularity,
|
|
MoveAreaCallbackProcPtr moveCB,
|
|
RemoveAreaCallbackProcPtr removeCB, pointer privData)
|
|
{
|
|
ScreenPtr pScreen = offman->pScreen;
|
|
FBLinkPtr link = NULL;
|
|
FBAreaPtr area = NULL;
|
|
RegionRec NewReg;
|
|
int i, x = 0, num;
|
|
BoxPtr boxp;
|
|
|
|
if (granularity <= 1)
|
|
granularity = 0;
|
|
|
|
boxp = RegionRects(offman->FreeBoxes);
|
|
num = RegionNumRects(offman->FreeBoxes);
|
|
|
|
/* look through the free boxes */
|
|
for (i = 0; i < num; i++, boxp++) {
|
|
x = boxp->x1;
|
|
if (granularity > 1)
|
|
x = ((x + granularity - 1) / granularity) * granularity;
|
|
|
|
if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w))
|
|
continue;
|
|
|
|
link = malloc(sizeof(FBLink));
|
|
if (!link)
|
|
return NULL;
|
|
|
|
area = &(link->area);
|
|
link->next = offman->UsedAreas;
|
|
offman->UsedAreas = link;
|
|
offman->NumUsedAreas++;
|
|
break;
|
|
}
|
|
|
|
/* try to boot a removeable one out if we are not expendable ourselves */
|
|
if (!area && !removeCB) {
|
|
link = offman->UsedAreas;
|
|
|
|
while (link) {
|
|
if (!link->area.RemoveAreaCallback) {
|
|
link = link->next;
|
|
continue;
|
|
}
|
|
|
|
boxp = &(link->area.box);
|
|
x = boxp->x1;
|
|
if (granularity > 1)
|
|
x = ((x + granularity - 1) / granularity) * granularity;
|
|
|
|
if (((boxp->y2 - boxp->y1) < h) || ((boxp->x2 - x) < w)) {
|
|
link = link->next;
|
|
continue;
|
|
}
|
|
|
|
/* bye, bye */
|
|
(*link->area.RemoveAreaCallback) (&link->area);
|
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RegionInit(&NewReg, &(link->area.box), 1);
|
|
RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
|
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RegionUninit(&NewReg);
|
|
|
|
area = &(link->area);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (area) {
|
|
area->pScreen = pScreen;
|
|
area->granularity = granularity;
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|
area->box.x1 = x;
|
|
area->box.x2 = x + w;
|
|
area->box.y1 = boxp->y1;
|
|
area->box.y2 = boxp->y1 + h;
|
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area->MoveAreaCallback = moveCB;
|
|
area->RemoveAreaCallback = removeCB;
|
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area->devPrivate.ptr = privData;
|
|
|
|
RegionInit(&NewReg, &(area->box), 1);
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RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &NewReg);
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RegionUninit(&NewReg);
|
|
}
|
|
|
|
return area;
|
|
}
|
|
|
|
static FBAreaPtr
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localAllocateOffscreenArea(ScreenPtr pScreen,
|
|
int w, int h,
|
|
int gran,
|
|
MoveAreaCallbackProcPtr moveCB,
|
|
RemoveAreaCallbackProcPtr removeCB, pointer privData)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBAreaPtr area = NULL;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
if ((area = AllocateArea(offman, w, h, gran, moveCB, removeCB, privData)))
|
|
SendCallFreeBoxCallbacks(offman);
|
|
|
|
return area;
|
|
}
|
|
|
|
static void
|
|
localFreeOffscreenArea(FBAreaPtr area)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinkPtr pLink, pLinkPrev = NULL;
|
|
RegionRec FreedRegion;
|
|
ScreenPtr pScreen;
|
|
|
|
pScreen = area->pScreen;
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
pLink = offman->UsedAreas;
|
|
if (!pLink)
|
|
return;
|
|
|
|
while (&(pLink->area) != area) {
|
|
pLinkPrev = pLink;
|
|
pLink = pLink->next;
|
|
if (!pLink)
|
|
return;
|
|
}
|
|
|
|
/* put the area back into the pool */
|
|
RegionInit(&FreedRegion, &(pLink->area.box), 1);
|
|
RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedRegion);
|
|
RegionUninit(&FreedRegion);
|
|
|
|
if (pLinkPrev)
|
|
pLinkPrev->next = pLink->next;
|
|
else
|
|
offman->UsedAreas = pLink->next;
|
|
|
|
free(pLink);
|
|
offman->NumUsedAreas--;
|
|
|
|
SendCallFreeBoxCallbacks(offman);
|
|
}
|
|
|
|
static Bool
|
|
localResizeOffscreenArea(FBAreaPtr resize, int w, int h)
|
|
{
|
|
FBManagerPtr offman;
|
|
ScreenPtr pScreen;
|
|
BoxRec OrigArea;
|
|
RegionRec FreedReg;
|
|
FBAreaPtr area = NULL;
|
|
FBLinkPtr pLink, newLink, pLinkPrev = NULL;
|
|
|
|
pScreen = resize->pScreen;
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
/* find this link */
|
|
if (!(pLink = offman->UsedAreas))
|
|
return FALSE;
|
|
|
|
while (&(pLink->area) != resize) {
|
|
pLinkPrev = pLink;
|
|
pLink = pLink->next;
|
|
if (!pLink)
|
|
return FALSE;
|
|
}
|
|
|
|
OrigArea.x1 = resize->box.x1;
|
|
OrigArea.x2 = resize->box.x2;
|
|
OrigArea.y1 = resize->box.y1;
|
|
OrigArea.y2 = resize->box.y2;
|
|
|
|
/* if it's smaller, this is easy */
|
|
|
|
if ((w <= (resize->box.x2 - resize->box.x1)) &&
|
|
(h <= (resize->box.y2 - resize->box.y1))) {
|
|
RegionRec NewReg;
|
|
|
|
resize->box.x2 = resize->box.x1 + w;
|
|
resize->box.y2 = resize->box.y1 + h;
|
|
|
|
if ((resize->box.y2 == OrigArea.y2) && (resize->box.x2 == OrigArea.x2))
|
|
return TRUE;
|
|
|
|
RegionInit(&FreedReg, &OrigArea, 1);
|
|
RegionInit(&NewReg, &(resize->box), 1);
|
|
RegionSubtract(&FreedReg, &FreedReg, &NewReg);
|
|
RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
|
|
RegionUninit(&FreedReg);
|
|
RegionUninit(&NewReg);
|
|
|
|
SendCallFreeBoxCallbacks(offman);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* otherwise we remove the old region */
|
|
|
|
RegionInit(&FreedReg, &OrigArea, 1);
|
|
RegionUnion(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
|
|
|
|
/* remove the old link */
|
|
if (pLinkPrev)
|
|
pLinkPrev->next = pLink->next;
|
|
else
|
|
offman->UsedAreas = pLink->next;
|
|
|
|
/* and try to add a new one */
|
|
|
|
if ((area = AllocateArea(offman, w, h, resize->granularity,
|
|
resize->MoveAreaCallback,
|
|
resize->RemoveAreaCallback,
|
|
resize->devPrivate.ptr))) {
|
|
|
|
/* copy data over to our link and replace the new with old */
|
|
memcpy(resize, area, sizeof(FBArea));
|
|
|
|
pLinkPrev = NULL;
|
|
newLink = offman->UsedAreas;
|
|
|
|
while (&(newLink->area) != area) {
|
|
pLinkPrev = newLink;
|
|
newLink = newLink->next;
|
|
}
|
|
|
|
if (pLinkPrev)
|
|
pLinkPrev->next = newLink->next;
|
|
else
|
|
offman->UsedAreas = newLink->next;
|
|
|
|
pLink->next = offman->UsedAreas;
|
|
offman->UsedAreas = pLink;
|
|
|
|
free(newLink);
|
|
|
|
/* AllocateArea added one but we really only exchanged one */
|
|
offman->NumUsedAreas--;
|
|
}
|
|
else {
|
|
/* reinstate the old region */
|
|
RegionSubtract(offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
|
|
RegionUninit(&FreedReg);
|
|
|
|
pLink->next = offman->UsedAreas;
|
|
offman->UsedAreas = pLink;
|
|
return FALSE;
|
|
}
|
|
|
|
RegionUninit(&FreedReg);
|
|
|
|
SendCallFreeBoxCallbacks(offman);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static Bool
|
|
localQueryLargestOffscreenArea(ScreenPtr pScreen,
|
|
int *width, int *height,
|
|
int granularity, int preferences, int severity)
|
|
{
|
|
FBManagerPtr offman;
|
|
RegionPtr newRegion = NULL;
|
|
BoxPtr pbox;
|
|
int nbox;
|
|
int x, w, h, area, oldArea;
|
|
|
|
*width = *height = oldArea = 0;
|
|
|
|
if (granularity <= 1)
|
|
granularity = 0;
|
|
|
|
if ((preferences < 0) || (preferences > 3))
|
|
return FALSE;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
if (severity < 0)
|
|
severity = 0;
|
|
if (severity > 2)
|
|
severity = 2;
|
|
|
|
switch (severity) {
|
|
case 2:
|
|
if (offman->NumUsedAreas) {
|
|
FBLinkPtr pLink;
|
|
RegionRec tmpRegion;
|
|
|
|
newRegion = RegionCreate(NULL, 1);
|
|
RegionCopy(newRegion, offman->InitialBoxes);
|
|
pLink = offman->UsedAreas;
|
|
|
|
while (pLink) {
|
|
if (!pLink->area.RemoveAreaCallback) {
|
|
RegionInit(&tmpRegion, &(pLink->area.box), 1);
|
|
RegionSubtract(newRegion, newRegion, &tmpRegion);
|
|
RegionUninit(&tmpRegion);
|
|
}
|
|
pLink = pLink->next;
|
|
}
|
|
|
|
nbox = RegionNumRects(newRegion);
|
|
pbox = RegionRects(newRegion);
|
|
break;
|
|
}
|
|
case 1:
|
|
if (offman->NumUsedAreas) {
|
|
FBLinkPtr pLink;
|
|
RegionRec tmpRegion;
|
|
|
|
newRegion = RegionCreate(NULL, 1);
|
|
RegionCopy(newRegion, offman->FreeBoxes);
|
|
pLink = offman->UsedAreas;
|
|
|
|
while (pLink) {
|
|
if (pLink->area.RemoveAreaCallback) {
|
|
RegionInit(&tmpRegion, &(pLink->area.box), 1);
|
|
RegionAppend(newRegion, &tmpRegion);
|
|
RegionUninit(&tmpRegion);
|
|
}
|
|
pLink = pLink->next;
|
|
}
|
|
|
|
nbox = RegionNumRects(newRegion);
|
|
pbox = RegionRects(newRegion);
|
|
break;
|
|
}
|
|
default:
|
|
nbox = RegionNumRects(offman->FreeBoxes);
|
|
pbox = RegionRects(offman->FreeBoxes);
|
|
break;
|
|
}
|
|
|
|
while (nbox--) {
|
|
x = pbox->x1;
|
|
if (granularity > 1)
|
|
x = ((x + granularity - 1) / granularity) * granularity;
|
|
|
|
w = pbox->x2 - x;
|
|
h = pbox->y2 - pbox->y1;
|
|
area = w * h;
|
|
|
|
if (w > 0) {
|
|
Bool gotIt = FALSE;
|
|
|
|
switch (preferences) {
|
|
case FAVOR_AREA_THEN_WIDTH:
|
|
if ((area > oldArea) || ((area == oldArea) && (w > *width)))
|
|
gotIt = TRUE;
|
|
break;
|
|
case FAVOR_AREA_THEN_HEIGHT:
|
|
if ((area > oldArea) || ((area == oldArea) && (h > *height)))
|
|
gotIt = TRUE;
|
|
break;
|
|
case FAVOR_WIDTH_THEN_AREA:
|
|
if ((w > *width) || ((w == *width) && (area > oldArea)))
|
|
gotIt = TRUE;
|
|
break;
|
|
case FAVOR_HEIGHT_THEN_AREA:
|
|
if ((h > *height) || ((h == *height) && (area > oldArea)))
|
|
gotIt = TRUE;
|
|
break;
|
|
}
|
|
if (gotIt) {
|
|
*width = w;
|
|
*height = h;
|
|
oldArea = area;
|
|
}
|
|
}
|
|
pbox++;
|
|
}
|
|
|
|
if (newRegion)
|
|
RegionDestroy(newRegion);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static Bool
|
|
localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinkPtr pLink, tmp, pPrev = NULL;
|
|
RegionRec FreedRegion;
|
|
Bool anyUsed = FALSE;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
pLink = offman->UsedAreas;
|
|
if (!pLink)
|
|
return TRUE;
|
|
|
|
while (pLink) {
|
|
if (pLink->area.RemoveAreaCallback) {
|
|
(*pLink->area.RemoveAreaCallback) (&pLink->area);
|
|
|
|
RegionInit(&FreedRegion, &(pLink->area.box), 1);
|
|
RegionAppend(offman->FreeBoxes, &FreedRegion);
|
|
RegionUninit(&FreedRegion);
|
|
|
|
if (pPrev)
|
|
pPrev->next = pLink->next;
|
|
else
|
|
offman->UsedAreas = pLink->next;
|
|
|
|
tmp = pLink;
|
|
pLink = pLink->next;
|
|
free(tmp);
|
|
offman->NumUsedAreas--;
|
|
anyUsed = TRUE;
|
|
}
|
|
else {
|
|
pPrev = pLink;
|
|
pLink = pLink->next;
|
|
}
|
|
}
|
|
|
|
if (anyUsed) {
|
|
RegionValidate(offman->FreeBoxes, &anyUsed);
|
|
SendCallFreeBoxCallbacks(offman);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
LinearMoveCBWrapper(FBAreaPtr from, FBAreaPtr to)
|
|
{
|
|
/* this will never get called */
|
|
}
|
|
|
|
static void
|
|
LinearRemoveCBWrapper(FBAreaPtr area)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinearLinkPtr pLink, pLinkPrev = NULL;
|
|
ScreenPtr pScreen = area->pScreen;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
pLink = offman->LinearAreas;
|
|
if (!pLink)
|
|
return;
|
|
|
|
while (pLink->area != area) {
|
|
pLinkPrev = pLink;
|
|
pLink = pLink->next;
|
|
if (!pLink)
|
|
return;
|
|
}
|
|
|
|
/* give the user the callback it is expecting */
|
|
(*pLink->linear.RemoveLinearCallback) (&(pLink->linear));
|
|
|
|
if (pLinkPrev)
|
|
pLinkPrev->next = pLink->next;
|
|
else
|
|
offman->LinearAreas = pLink->next;
|
|
|
|
free(pLink);
|
|
}
|
|
|
|
static void
|
|
DumpDebug(FBLinearLinkPtr pLink)
|
|
{
|
|
#ifdef DEBUG
|
|
if (!pLink)
|
|
ErrorF("MMmm, PLINK IS NULL!\n");
|
|
|
|
while (pLink) {
|
|
ErrorF(" Offset:%08x, Size:%08x, %s,%s\n",
|
|
pLink->linear.offset,
|
|
pLink->linear.size,
|
|
pLink->free ? "Free" : "Used", pLink->area ? "Area" : "Linear");
|
|
|
|
pLink = pLink->next;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static FBLinearPtr
|
|
AllocateLinear(FBManagerPtr offman, int size, int granularity, pointer privData)
|
|
{
|
|
ScreenPtr pScreen = offman->pScreen;
|
|
FBLinearLinkPtr linear = NULL;
|
|
FBLinearLinkPtr newlink = NULL;
|
|
int offset, end;
|
|
|
|
if (size <= 0)
|
|
return NULL;
|
|
|
|
if (!offman->LinearAreas)
|
|
return NULL;
|
|
|
|
linear = offman->LinearAreas;
|
|
while (linear) {
|
|
/* Make sure we get a free area that's not an XY fallback case */
|
|
if (!linear->area && linear->free) {
|
|
offset = linear->linear.offset;
|
|
if (granularity > 1)
|
|
offset =
|
|
((offset + granularity - 1) / granularity) * granularity;
|
|
end = offset + size;
|
|
if (end <= (linear->linear.offset + linear->linear.size))
|
|
break;
|
|
}
|
|
linear = linear->next;
|
|
}
|
|
if (!linear)
|
|
return NULL;
|
|
|
|
/* break left */
|
|
if (offset > linear->linear.offset) {
|
|
newlink = malloc(sizeof(FBLinearLink));
|
|
if (!newlink)
|
|
return NULL;
|
|
newlink->area = NULL;
|
|
newlink->linear.offset = offset;
|
|
newlink->linear.size =
|
|
linear->linear.size - (offset - linear->linear.offset);
|
|
newlink->free = 1;
|
|
newlink->next = linear->next;
|
|
linear->linear.size -= newlink->linear.size;
|
|
linear->next = newlink;
|
|
linear = newlink;
|
|
}
|
|
|
|
/* break right */
|
|
if (size < linear->linear.size) {
|
|
newlink = malloc(sizeof(FBLinearLink));
|
|
if (!newlink)
|
|
return NULL;
|
|
newlink->area = NULL;
|
|
newlink->linear.offset = offset + size;
|
|
newlink->linear.size = linear->linear.size - size;
|
|
newlink->free = 1;
|
|
newlink->next = linear->next;
|
|
linear->linear.size = size;
|
|
linear->next = newlink;
|
|
}
|
|
|
|
/* p = middle block */
|
|
linear->linear.granularity = granularity;
|
|
linear->free = 0;
|
|
linear->linear.pScreen = pScreen;
|
|
linear->linear.MoveLinearCallback = NULL;
|
|
linear->linear.RemoveLinearCallback = NULL;
|
|
linear->linear.devPrivate.ptr = NULL;
|
|
|
|
DumpDebug(offman->LinearAreas);
|
|
|
|
return &(linear->linear);
|
|
}
|
|
|
|
static FBLinearPtr
|
|
localAllocateOffscreenLinear(ScreenPtr pScreen,
|
|
int length,
|
|
int gran,
|
|
MoveLinearCallbackProcPtr moveCB,
|
|
RemoveLinearCallbackProcPtr removeCB,
|
|
pointer privData)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinearLinkPtr link;
|
|
FBAreaPtr area;
|
|
FBLinearPtr linear = NULL;
|
|
BoxPtr extents;
|
|
int w, h, pitch;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
|
|
/* Try to allocate from linear memory first...... */
|
|
DebugF("ALLOCATING LINEAR\n");
|
|
if ((linear = AllocateLinear(offman, length, gran, privData)))
|
|
return linear;
|
|
|
|
DebugF("NOPE, ALLOCATING AREA\n");
|
|
|
|
if (!(link = malloc(sizeof(FBLinearLink))))
|
|
return NULL;
|
|
|
|
/* No linear available, so try and pinch some from the XY areas */
|
|
extents = RegionExtents(offman->InitialBoxes);
|
|
pitch = extents->x2 - extents->x1;
|
|
|
|
if (gran > 1) {
|
|
if (gran > pitch) {
|
|
/* we can't match the specified alignment with XY allocations */
|
|
free(link);
|
|
return NULL;
|
|
}
|
|
|
|
if (pitch % gran) {
|
|
/* pitch and granularity aren't a perfect match, let's allocate
|
|
* a bit more so we can align later on
|
|
*/
|
|
length += gran - 1;
|
|
}
|
|
}
|
|
|
|
if (length < pitch) { /* special case */
|
|
w = length;
|
|
h = 1;
|
|
}
|
|
else {
|
|
w = pitch;
|
|
h = (length + pitch - 1) / pitch;
|
|
}
|
|
|
|
if ((area = localAllocateOffscreenArea(pScreen, w, h, gran,
|
|
moveCB ? LinearMoveCBWrapper : NULL,
|
|
removeCB ? LinearRemoveCBWrapper :
|
|
NULL, privData))) {
|
|
link->area = area;
|
|
link->free = 0;
|
|
link->next = offman->LinearAreas;
|
|
offman->LinearAreas = link;
|
|
linear = &(link->linear);
|
|
linear->pScreen = pScreen;
|
|
linear->size = h * w;
|
|
linear->offset = (pitch * area->box.y1) + area->box.x1;
|
|
if (gran > 1)
|
|
linear->offset = ((linear->offset + gran - 1) / gran) * gran;
|
|
linear->granularity = gran;
|
|
linear->MoveLinearCallback = moveCB;
|
|
linear->RemoveLinearCallback = removeCB;
|
|
linear->devPrivate.ptr = privData;
|
|
}
|
|
else
|
|
free(link);
|
|
|
|
DumpDebug(offman->LinearAreas);
|
|
|
|
return linear;
|
|
}
|
|
|
|
static void
|
|
localFreeOffscreenLinear(FBLinearPtr linear)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinearLinkPtr pLink, pLinkPrev = NULL;
|
|
ScreenPtr pScreen = linear->pScreen;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
pLink = offman->LinearAreas;
|
|
if (!pLink)
|
|
return;
|
|
|
|
while (&(pLink->linear) != linear) {
|
|
pLinkPrev = pLink;
|
|
pLink = pLink->next;
|
|
if (!pLink)
|
|
return;
|
|
}
|
|
|
|
if (pLink->area) { /* really an XY area */
|
|
DebugF("FREEING AREA\n");
|
|
localFreeOffscreenArea(pLink->area);
|
|
if (pLinkPrev)
|
|
pLinkPrev->next = pLink->next;
|
|
else
|
|
offman->LinearAreas = pLink->next;
|
|
free(pLink);
|
|
DumpDebug(offman->LinearAreas);
|
|
return;
|
|
}
|
|
|
|
pLink->free = 1;
|
|
|
|
if (pLink->next && pLink->next->free) {
|
|
FBLinearLinkPtr p = pLink->next;
|
|
|
|
pLink->linear.size += p->linear.size;
|
|
pLink->next = p->next;
|
|
free(p);
|
|
}
|
|
|
|
if (pLinkPrev) {
|
|
if (pLinkPrev->next && pLinkPrev->next->free && !pLinkPrev->area) {
|
|
FBLinearLinkPtr p = pLinkPrev->next;
|
|
|
|
pLinkPrev->linear.size += p->linear.size;
|
|
pLinkPrev->next = p->next;
|
|
free(p);
|
|
}
|
|
}
|
|
|
|
DebugF("FREEING LINEAR\n");
|
|
DumpDebug(offman->LinearAreas);
|
|
}
|
|
|
|
static Bool
|
|
localResizeOffscreenLinear(FBLinearPtr resize, int length)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinearLinkPtr pLink;
|
|
ScreenPtr pScreen = resize->pScreen;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
pLink = offman->LinearAreas;
|
|
if (!pLink)
|
|
return FALSE;
|
|
|
|
while (&(pLink->linear) != resize) {
|
|
pLink = pLink->next;
|
|
if (!pLink)
|
|
return FALSE;
|
|
}
|
|
|
|
/* This could actually be alot smarter and try to move allocations
|
|
from XY to linear when available. For now if it was XY, we keep
|
|
it XY */
|
|
|
|
if (pLink->area) { /* really an XY area */
|
|
BoxPtr extents;
|
|
int pitch, w, h;
|
|
|
|
extents = RegionExtents(offman->InitialBoxes);
|
|
pitch = extents->x2 - extents->x1;
|
|
|
|
if (length < pitch) { /* special case */
|
|
w = length;
|
|
h = 1;
|
|
}
|
|
else {
|
|
w = pitch;
|
|
h = (length + pitch - 1) / pitch;
|
|
}
|
|
|
|
if (localResizeOffscreenArea(pLink->area, w, h)) {
|
|
resize->size = h * w;
|
|
resize->offset =
|
|
(pitch * pLink->area->box.y1) + pLink->area->box.x1;
|
|
return TRUE;
|
|
}
|
|
}
|
|
else {
|
|
/* TODO!!!! resize the linear area */
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static Bool
|
|
localQueryLargestOffscreenLinear(ScreenPtr pScreen,
|
|
int *size, int gran, int priority)
|
|
{
|
|
FBManagerPtr offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
FBLinearLinkPtr pLink;
|
|
FBLinearLinkPtr pLinkRet;
|
|
|
|
*size = 0;
|
|
|
|
pLink = offman->LinearAreas;
|
|
|
|
if (pLink && !pLink->area) {
|
|
pLinkRet = pLink;
|
|
while (pLink) {
|
|
if (pLink->free) {
|
|
if (pLink->linear.size > pLinkRet->linear.size)
|
|
pLinkRet = pLink;
|
|
}
|
|
pLink = pLink->next;
|
|
}
|
|
|
|
if (pLinkRet->free) {
|
|
*size = pLinkRet->linear.size;
|
|
return TRUE;
|
|
}
|
|
}
|
|
else {
|
|
int w, h;
|
|
|
|
if (localQueryLargestOffscreenArea(pScreen, &w, &h, gran,
|
|
FAVOR_WIDTH_THEN_AREA, priority)) {
|
|
FBManagerPtr offman;
|
|
BoxPtr extents;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
extents = RegionExtents(offman->InitialBoxes);
|
|
if ((extents->x2 - extents->x1) == w)
|
|
*size = w * h;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static FBManagerFuncs xf86FBManFuncs = {
|
|
localAllocateOffscreenArea,
|
|
localFreeOffscreenArea,
|
|
localResizeOffscreenArea,
|
|
localQueryLargestOffscreenArea,
|
|
localRegisterFreeBoxCallback,
|
|
localAllocateOffscreenLinear,
|
|
localFreeOffscreenLinear,
|
|
localResizeOffscreenLinear,
|
|
localQueryLargestOffscreenLinear,
|
|
localPurgeUnlockedOffscreenAreas
|
|
};
|
|
|
|
static Bool
|
|
xf86FBCloseScreen(ScreenPtr pScreen)
|
|
{
|
|
FBLinkPtr pLink, tmp;
|
|
FBLinearLinkPtr pLinearLink, tmp2;
|
|
FBManagerPtr offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
|
|
pScreen->CloseScreen = offman->CloseScreen;
|
|
|
|
pLink = offman->UsedAreas;
|
|
while (pLink) {
|
|
tmp = pLink;
|
|
pLink = pLink->next;
|
|
free(tmp);
|
|
}
|
|
|
|
pLinearLink = offman->LinearAreas;
|
|
while (pLinearLink) {
|
|
tmp2 = pLinearLink;
|
|
pLinearLink = pLinearLink->next;
|
|
free(tmp2);
|
|
}
|
|
|
|
RegionDestroy(offman->InitialBoxes);
|
|
RegionDestroy(offman->FreeBoxes);
|
|
|
|
free(offman->FreeBoxesUpdateCallback);
|
|
free(offman->devPrivates);
|
|
free(offman);
|
|
dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, NULL);
|
|
|
|
return (*pScreen->CloseScreen) (pScreen);
|
|
}
|
|
|
|
Bool
|
|
xf86InitFBManager(ScreenPtr pScreen, BoxPtr FullBox)
|
|
{
|
|
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
|
|
RegionRec ScreenRegion;
|
|
RegionRec FullRegion;
|
|
BoxRec ScreenBox;
|
|
Bool ret;
|
|
|
|
ScreenBox.x1 = 0;
|
|
ScreenBox.y1 = 0;
|
|
ScreenBox.x2 = pScrn->virtualX;
|
|
ScreenBox.y2 = pScrn->virtualY;
|
|
|
|
if ((FullBox->x1 > ScreenBox.x1) || (FullBox->y1 > ScreenBox.y1) ||
|
|
(FullBox->x2 < ScreenBox.x2) || (FullBox->y2 < ScreenBox.y2)) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (FullBox->y2 < FullBox->y1)
|
|
return FALSE;
|
|
if (FullBox->x2 < FullBox->x1)
|
|
return FALSE;
|
|
|
|
RegionInit(&ScreenRegion, &ScreenBox, 1);
|
|
RegionInit(&FullRegion, FullBox, 1);
|
|
|
|
RegionSubtract(&FullRegion, &FullRegion, &ScreenRegion);
|
|
|
|
ret = xf86InitFBManagerRegion(pScreen, &FullRegion);
|
|
|
|
RegionUninit(&ScreenRegion);
|
|
RegionUninit(&FullRegion);
|
|
|
|
return ret;
|
|
}
|
|
|
|
Bool
|
|
xf86InitFBManagerArea(ScreenPtr pScreen, int PixelArea, int Verbosity)
|
|
{
|
|
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
|
|
xRectangle Rect[3];
|
|
RegionPtr pRegion, pScreenRegion;
|
|
int nRect;
|
|
Bool ret = FALSE;
|
|
|
|
if (PixelArea < (pScrn->displayWidth * pScrn->virtualY))
|
|
return FALSE;
|
|
|
|
Rect[0].x = Rect[0].y = 0;
|
|
Rect[0].width = pScrn->displayWidth;
|
|
Rect[0].height = PixelArea / pScrn->displayWidth;
|
|
nRect = 1;
|
|
|
|
/* Add a possible partial scanline */
|
|
if ((Rect[1].height = Rect[1].width = PixelArea % pScrn->displayWidth)) {
|
|
Rect[1].x = 0;
|
|
Rect[1].y = Rect[0].height;
|
|
Rect[1].height = 1;
|
|
nRect++;
|
|
}
|
|
|
|
/* Factor out virtual resolution */
|
|
pRegion = RegionFromRects(nRect, Rect, 0);
|
|
if (pRegion) {
|
|
if (!RegionNar(pRegion)) {
|
|
Rect[2].x = Rect[2].y = 0;
|
|
Rect[2].width = pScrn->virtualX;
|
|
Rect[2].height = pScrn->virtualY;
|
|
|
|
pScreenRegion = RegionFromRects(1, &Rect[2], 0);
|
|
if (pScreenRegion) {
|
|
if (!RegionNar(pScreenRegion)) {
|
|
RegionSubtract(pRegion, pRegion, pScreenRegion);
|
|
|
|
ret = xf86InitFBManagerRegion(pScreen, pRegion);
|
|
|
|
if (ret && xf86GetVerbosity() >= Verbosity) {
|
|
int scrnIndex = pScrn->scrnIndex;
|
|
|
|
xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
|
|
"Largest offscreen areas (with overlaps):\n");
|
|
|
|
if (Rect[2].width < Rect[0].width) {
|
|
xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
|
|
"\t%d x %d rectangle at %d,0\n",
|
|
Rect[0].width - Rect[2].width,
|
|
Rect[0].height, Rect[2].width);
|
|
}
|
|
if (Rect[2].width < Rect[1].width) {
|
|
xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
|
|
"\t%d x %d rectangle at %d,0\n",
|
|
Rect[1].width - Rect[2].width,
|
|
Rect[0].height + Rect[1].height,
|
|
Rect[2].width);
|
|
}
|
|
if (Rect[2].height < Rect[0].height) {
|
|
xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
|
|
"\t%d x %d rectangle at 0,%d\n",
|
|
Rect[0].width,
|
|
Rect[0].height - Rect[2].height,
|
|
Rect[2].height);
|
|
}
|
|
if (Rect[1].height) {
|
|
xf86DrvMsgVerb(scrnIndex, X_INFO, Verbosity,
|
|
"\t%d x %d rectangle at 0,%d\n",
|
|
Rect[1].width,
|
|
Rect[0].height - Rect[2].height +
|
|
Rect[1].height, Rect[2].height);
|
|
}
|
|
}
|
|
}
|
|
|
|
RegionDestroy(pScreenRegion);
|
|
}
|
|
}
|
|
|
|
RegionDestroy(pRegion);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
Bool
|
|
xf86InitFBManagerRegion(ScreenPtr pScreen, RegionPtr FullRegion)
|
|
{
|
|
FBManagerPtr offman;
|
|
|
|
if (RegionNil(FullRegion))
|
|
return FALSE;
|
|
|
|
if (!dixRegisterPrivateKey(&xf86FBScreenKeyRec, PRIVATE_SCREEN, 0))
|
|
return FALSE;
|
|
|
|
if (!xf86RegisterOffscreenManager(pScreen, &xf86FBManFuncs))
|
|
return FALSE;
|
|
|
|
offman = malloc(sizeof(FBManager));
|
|
if (!offman)
|
|
return FALSE;
|
|
|
|
dixSetPrivate(&pScreen->devPrivates, xf86FBScreenKey, offman);
|
|
|
|
offman->CloseScreen = pScreen->CloseScreen;
|
|
pScreen->CloseScreen = xf86FBCloseScreen;
|
|
|
|
offman->InitialBoxes = RegionCreate(NULL, 1);
|
|
offman->FreeBoxes = RegionCreate(NULL, 1);
|
|
|
|
RegionCopy(offman->InitialBoxes, FullRegion);
|
|
RegionCopy(offman->FreeBoxes, FullRegion);
|
|
|
|
offman->pScreen = pScreen;
|
|
offman->UsedAreas = NULL;
|
|
offman->LinearAreas = NULL;
|
|
offman->NumUsedAreas = 0;
|
|
offman->NumCallbacks = 0;
|
|
offman->FreeBoxesUpdateCallback = NULL;
|
|
offman->devPrivates = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
Bool
|
|
xf86InitFBManagerLinear(ScreenPtr pScreen, int offset, int size)
|
|
{
|
|
FBManagerPtr offman;
|
|
FBLinearLinkPtr link;
|
|
FBLinearPtr linear;
|
|
|
|
if (size <= 0)
|
|
return FALSE;
|
|
|
|
/* we expect people to have called the Area setup first for pixmap cache */
|
|
if (!dixLookupPrivate(&pScreen->devPrivates, xf86FBScreenKey))
|
|
return FALSE;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
offman->LinearAreas = malloc(sizeof(FBLinearLink));
|
|
if (!offman->LinearAreas)
|
|
return FALSE;
|
|
|
|
link = offman->LinearAreas;
|
|
link->area = NULL;
|
|
link->next = NULL;
|
|
link->free = 1;
|
|
linear = &(link->linear);
|
|
linear->pScreen = pScreen;
|
|
linear->size = size;
|
|
linear->offset = offset;
|
|
linear->granularity = 0;
|
|
linear->MoveLinearCallback = NULL;
|
|
linear->RemoveLinearCallback = NULL;
|
|
linear->devPrivate.ptr = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* This is an implementation specific function and should
|
|
disappear after the next release. People should use the
|
|
real linear functions instead */
|
|
|
|
FBAreaPtr
|
|
xf86AllocateLinearOffscreenArea(ScreenPtr pScreen,
|
|
int length,
|
|
int gran,
|
|
MoveAreaCallbackProcPtr moveCB,
|
|
RemoveAreaCallbackProcPtr removeCB,
|
|
pointer privData)
|
|
{
|
|
FBManagerFuncsPtr funcs;
|
|
FBManagerPtr offman;
|
|
BoxPtr extents;
|
|
int w, h;
|
|
|
|
if (xf86FBManagerKey == NULL)
|
|
return NULL;
|
|
if (!(funcs = (FBManagerFuncsPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBManagerKey)))
|
|
return NULL;
|
|
|
|
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
|
|
xf86FBScreenKey);
|
|
extents = RegionExtents(offman->InitialBoxes);
|
|
w = extents->x2 - extents->x1;
|
|
|
|
if (gran > 1) {
|
|
if (gran > w)
|
|
return NULL;
|
|
|
|
if (w % gran)
|
|
length += gran - 1;
|
|
}
|
|
|
|
if (length <= w) { /* special case */
|
|
h = 1;
|
|
w = length;
|
|
}
|
|
else {
|
|
h = (length + w - 1) / w;
|
|
}
|
|
|
|
return (*funcs->AllocateOffscreenArea) (pScreen, w, h, gran, moveCB,
|
|
removeCB, privData);
|
|
}
|