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Commit 21c3d20f authored by Mike Gabriel's avatar Mike Gabriel
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[render] Split out filter finding from filter setting.

Backported from X.org: commit acda790e430b2a18c7c35379f6e538f3d01ff221 Author: Keith Packard <keithp@keithp.com> Date: Fri Mar 14 13:46:30 2008 -0700 [render] Split out filter finding from filter setting. To prepare for RandR using filters in transforms, split out code paths so that the RandR code can validate the filter name and parameters during the transform set operation so that use of the filter later will not have unreportable errors. Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
parent e3838817
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Showing with 54 additions and 17 deletions
nx-X11/programs/Xserver/hw/nxagent/NXpicturestr.h
View file @ 21c3d20f
......@@ -482,7 +482,12 @@ PictFilterPtr
PictureFindFilter (ScreenPtr pScreen, char *name, int len);
int
SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams);
SetPicturePictFilter (PicturePtr pPicture, PictFilterPtr pFilter,
xFixed *params, int nparams);
int
SetPictureFilter (PicturePtr pPicture, char *name, int len,
xFixed *params, int nparams);
Bool
PictureFinishInit (void);
......
nx-X11/programs/Xserver/render/filter.c
View file @ 21c3d20f
......@@ -215,21 +215,30 @@ PictureFindFilter (ScreenPtr pScreen, char *name, int len)
}
static Bool
convolutionFilterValidateParams (PicturePtr pPicture,
convolutionFilterValidateParams (ScreenPtr pScreen,
int filter,
xFixed *params,
int nparams)
int nparams,
int* width,
int* height)
{
int w, h;
if (nparams < 3)
return FALSE;
if (xFixedFrac (params[0]) || xFixedFrac (params[1]))
return FALSE;
w = xFixedToInt (params[0]);
h = xFixedToInt (params[1]);
nparams -= 2;
if ((xFixedToInt (params[0]) * xFixedToInt (params[1])) > nparams)
if (w * h > nparams)
return FALSE;
*width = w;
*height = h;
return TRUE;
}
......@@ -271,10 +280,8 @@ PictureResetFilters (ScreenPtr pScreen)
int
SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams)
{
ScreenPtr pScreen;
PictFilterPtr pFilter;
xFixed *new_params;
int i;
ScreenPtr pScreen;
if (pPicture->pDrawable) {
pScreen = pPicture->pDrawable->pScreen;
......@@ -288,7 +295,7 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
if (!pFilter)
return BadName;
if (!pPicture->pDrawable) {
if (pPicture->pDrawable == NULL) {
int s;
/* For source pictures, the picture isn't tied to a screen. So, ensure
......@@ -303,8 +310,25 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
}
}
return SetPicturePictFilter (pPicture, pFilter, params, nparams);
}
int
SetPicturePictFilter (PicturePtr pPicture, PictFilterPtr pFilter,
xFixed *params, int nparams)
{
ScreenPtr pScreen;
int i;
if (pPicture->pDrawable)
pScreen = pPicture->pDrawable->pScreen;
else
pScreen = screenInfo.screens[0];
if (pFilter->ValidateParams) {
if (!(*pFilter->ValidateParams) (pPicture, pFilter->id, params, nparams))
int width, height;
if (!(*pFilter->ValidateParams) (pScreen, pFilter->id, params, nparams, &width, &height))
return BadMatch;
}
else if (nparams) {
......@@ -312,7 +336,7 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
}
if (nparams != pPicture->filter_nparams) {
new_params = xalloc (nparams * sizeof (xFixed));
xFixed *new_params = xalloc (nparams * sizeof (xFixed));
if (!new_params && nparams)
return BadAlloc;
......@@ -324,9 +348,10 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
pPicture->filter_params[i] = params[i];
pPicture->filter = pFilter->id;
if (pPicture->pDrawable) {
PictureScreenPtr ps = GetPictureScreen (pScreen);
int result;
if (pPicture->pDrawable)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int result;
result = (*ps->ChangePictureFilter) (pPicture, pPicture->filter,
params, nparams);
......@@ -335,5 +360,5 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
}
pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
return Success;
return ;
}
nx-X11/programs/Xserver/render/picturestr.h
View file @ 21c3d20f
......@@ -168,12 +168,14 @@ typedef struct _Picture {
SourcePictPtr pSourcePict;
} PictureRec;
typedef Bool (*PictFilterValidateParamsProcPtr) (PicturePtr pPicture, int id,
xFixed *params, int nparams);
typedef Bool (*PictFilterValidateParamsProcPtr) (ScreenPtr pScreen, int id,
xFixed *params, int nparams,
int *width, int *height);
typedef struct {
char *name;
int id;
PictFilterValidateParamsProcPtr ValidateParams;
int width, height;
} PictFilterRec, *PictFilterPtr;
#define PictFilterNearest 0
......@@ -457,7 +459,12 @@ PictFilterPtr
PictureFindFilter (ScreenPtr pScreen, char *name, int len);
int
SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams);
SetPicturePictFilter (PicturePtr pPicture, PictFilterPtr pFilter,
xFixed *params, int nparams);
int
SetPictureFilter (PicturePtr pPicture, char *name, int len,
xFixed *params, int nparams);
Bool
PictureFinishInit (void);
......
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