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Xext: shm: simplify dispatcher 

These dispatcher functions are much more complex than they're usually are
(just switch/case statement). Bring them in line with the standard scheme
used in the Xserver, so further steps become easier.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2024-07-03 16:45:06 +02:00
parent 850da1ad5f
commit c67b05e653
1 changed files with 38 additions and 39 deletions
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77
Xext/shm.c
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@ -106,6 +106,8 @@ static void ShmResetProc(ExtensionEntry *extEntry);
static void SShmCompletionEvent(xShmCompletionEvent *from,
xShmCompletionEvent *to);
static int ShmCreatePixmap(ClientPtr client, xShmCreatePixmapReq *stuff);
static unsigned char ShmReqCode;
int ShmCompletionCode;
int BadShmSegCode;
@ -490,16 +492,13 @@ doShmPutImage(DrawablePtr dst, GCPtr pGC,
}
static int
ProcShmPutImage(ClientPtr client)
ShmPutImage(ClientPtr client, xShmPutImageReq *stuff)
{
GCPtr pGC;
DrawablePtr pDraw;
long length;
ShmDescPtr shmdesc;
REQUEST(xShmPutImageReq);
REQUEST_SIZE_MATCH(xShmPutImageReq);
VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess);
VERIFY_SHMPTR(stuff->shmseg, stuff->offset, FALSE, shmdesc, client);
if ((stuff->sendEvent != xTrue) && (stuff->sendEvent != xFalse))
@ -589,7 +588,7 @@ ProcShmPutImage(ClientPtr client)
}
static int
ProcShmGetImage(ClientPtr client)
ShmGetImage(ClientPtr client, xShmGetImageReq *stuff)
{
DrawablePtr pDraw;
long lenPer = 0, length;
@ -600,9 +599,6 @@ ProcShmGetImage(ClientPtr client)
RegionPtr pVisibleRegion = NULL;
int rc;
REQUEST(xShmGetImageReq);
REQUEST_SIZE_MATCH(xShmGetImageReq);
if ((stuff->format != XYPixmap) && (stuff->format != ZPixmap)) {
client->errorValue = stuff->format;
return BadValue;
@ -707,16 +703,19 @@ ProcShmGetImage(ClientPtr client)
return Success;
}
#ifdef XINERAMA
static int
ProcPanoramiXShmPutImage(ClientPtr client)
ProcShmPutImage(ClientPtr client)
{
REQUEST(xShmPutImageReq);
REQUEST_SIZE_MATCH(xShmPutImageReq);
#ifdef XINERAMA
int j, result, orig_x, orig_y;
PanoramiXRes *draw, *gc;
Bool sendEvent, isRoot;
REQUEST(xShmPutImageReq);
REQUEST_SIZE_MATCH(xShmPutImageReq);
if (noPanoramiXExtension)
return ShmPutImage(client, stuff);
result = dixLookupResourceByClass((void **) &draw, stuff->drawable,
XRC_DRAWABLE, client, DixWriteAccess);
@ -743,16 +742,23 @@ ProcPanoramiXShmPutImage(ClientPtr client)
stuff->dstX = orig_x - screenInfo.screens[j]->x;
stuff->dstY = orig_y - screenInfo.screens[j]->y;
}
result = ProcShmPutImage(client);
result = ShmPutImage(client, stuff);
if (result != Success)
break;
}
return result;
#else
return ShmPutImage(client, stuff);
#endif /* XINERAMA */
}
static int
ProcPanoramiXShmGetImage(ClientPtr client)
ProcShmGetImage(ClientPtr client)
{
REQUEST(xShmGetImageReq);
REQUEST_SIZE_MATCH(xShmGetImageReq);
#ifdef XINERAMA
PanoramiXRes *draw;
DrawablePtr pDraw;
xShmGetImageReply xgi;
@ -762,9 +768,8 @@ ProcPanoramiXShmGetImage(ClientPtr client)
long lenPer = 0, length, widthBytesLine;
Bool isRoot;
REQUEST(xShmGetImageReq);
REQUEST_SIZE_MATCH(xShmGetImageReq);
if (noPanoramiXExtension)
return ShmGetImage(client, stuff);
if ((stuff->format != XYPixmap) && (stuff->format != ZPixmap)) {
client->errorValue = stuff->format;
@ -777,7 +782,7 @@ ProcPanoramiXShmGetImage(ClientPtr client)
return (rc == BadValue) ? BadDrawable : rc;
if (draw->type == XRT_PIXMAP)
return ProcShmGetImage(client);
return ShmGetImage(client, stuff);
rc = dixLookupDrawable(&pDraw, stuff->drawable, client, 0, DixReadAccess);
if (rc != Success)
@ -888,24 +893,31 @@ ProcPanoramiXShmGetImage(ClientPtr client)
WriteToClient(client, sizeof(xShmGetImageReply), &xgi);
return Success;
#else
return ShmGetImage(client, stuff);
#endif /* XINERAMA */
}
static int
ProcPanoramiXShmCreatePixmap(ClientPtr client)
ProcShmCreatePixmap(ClientPtr client)
{
REQUEST(xShmCreatePixmapReq);
REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
#ifdef XINERAMA
if (noPanoramiXExtension)
return ShmCreatePixmap(client, stuff);
ScreenPtr pScreen = NULL;
PixmapPtr pMap = NULL;
DrawablePtr pDraw;
DepthPtr pDepth;
int i, j, result, rc;
ShmDescPtr shmdesc;
REQUEST(xShmCreatePixmapReq);
unsigned int width, height, depth;
unsigned long size;
PanoramiXRes *newPix;
REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
client->errorValue = stuff->pid;
if (!sharedPixmaps)
return BadImplementation;
@ -1001,8 +1013,10 @@ ProcPanoramiXShmCreatePixmap(ClientPtr client)
AddResource(stuff->pid, XRT_PIXMAP, newPix);
return result;
}
#else
return ShmCreatePixmap(client, stuff);
#endif /* XINERAMA */
}
static PixmapPtr
fbShmCreatePixmap(ScreenPtr pScreen,
@ -1025,7 +1039,7 @@ fbShmCreatePixmap(ScreenPtr pScreen,
}
static int
ProcShmCreatePixmap(ClientPtr client)
ShmCreatePixmap(ClientPtr client, xShmCreatePixmapReq *stuff)
{
PixmapPtr pMap;
DrawablePtr pDraw;
@ -1033,12 +1047,9 @@ ProcShmCreatePixmap(ClientPtr client)
int i, rc;
ShmDescPtr shmdesc;
ShmScrPrivateRec *screen_priv;
REQUEST(xShmCreatePixmapReq);
unsigned int width, height, depth;
unsigned long size;
REQUEST_SIZE_MATCH(xShmCreatePixmapReq);
client->errorValue = stuff->pid;
if (!sharedPixmaps)
return BadImplementation;
@ -1322,22 +1333,10 @@ ProcShmDispatch(ClientPtr client)
case X_ShmDetach:
return ProcShmDetach(client);
case X_ShmPutImage:
#ifdef XINERAMA
if (!noPanoramiXExtension)
return ProcPanoramiXShmPutImage(client);
#endif /* XINERAMA */
return ProcShmPutImage(client);
case X_ShmGetImage:
#ifdef XINERAMA
if (!noPanoramiXExtension)
return ProcPanoramiXShmGetImage(client);
#endif /* XINERAMA */
return ProcShmGetImage(client);
case X_ShmCreatePixmap:
#ifdef XINERAMA
if (!noPanoramiXExtension)
return ProcPanoramiXShmCreatePixmap(client);
#endif /* XINERAMA */
return ProcShmCreatePixmap(client);
#ifdef SHM_FD_PASSING
case X_ShmAttachFd: