diff options
Diffstat (limited to 'libXext/src/XShm.c')
| -rw-r--r-- | libXext/src/XShm.c | 862 |
1 files changed, 431 insertions, 431 deletions
diff --git a/libXext/src/XShm.c b/libXext/src/XShm.c index e4bc1f3e0..d1f1a4d7f 100644 --- a/libXext/src/XShm.c +++ b/libXext/src/XShm.c @@ -1,431 +1,431 @@ -/*
- *
-Copyright 1989, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-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
-OPEN GROUP 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 Open Group 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 Open Group.
- *
- * Author: Bob Scheifler and Keith Packard, MIT X Consortium
- */
-
-/* THIS IS NOT AN X CONSORTIUM STANDARD OR AN X PROJECT TEAM SPECIFICATION */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <X11/Xlibint.h>
-#include <X11/ImUtil.h>
-#include <X11/extensions/XShm.h>
-#include <X11/extensions/shmproto.h>
-#include <X11/extensions/Xext.h>
-#include <X11/extensions/extutil.h>
-
-static XExtensionInfo _shm_info_data;
-static XExtensionInfo *shm_info = &_shm_info_data;
-static /* const */ char *shm_extension_name = SHMNAME;
-
-#define ShmCheckExtension(dpy,i,val) \
- XextCheckExtension (dpy, i, shm_extension_name, val)
-
-/*****************************************************************************
- * *
- * private utility routines *
- * *
- *****************************************************************************/
-
-static int close_display(Display *dpy, XExtCodes *codes);
-static char *error_string(Display *dpy, int code, XExtCodes *codes,
- char *buf, int n);
-static Bool wire_to_event (Display *dpy, XEvent *re, xEvent *event);
-static Status event_to_wire (Display *dpy, XEvent *re, xEvent *event);
-static /* const */ XExtensionHooks shm_extension_hooks = {
- NULL, /* create_gc */
- NULL, /* copy_gc */
- NULL, /* flush_gc */
- NULL, /* free_gc */
- NULL, /* create_font */
- NULL, /* free_font */
- close_display, /* close_display */
- wire_to_event, /* wire_to_event */
- event_to_wire, /* event_to_wire */
- NULL, /* error */
- error_string, /* error_string */
-};
-
-static /* const */ char *shm_error_list[] = {
- "BadShmSeg", /* BadShmSeg */
-};
-
-static XEXT_GENERATE_FIND_DISPLAY (find_display, shm_info, shm_extension_name,
- &shm_extension_hooks, ShmNumberEvents, NULL)
-
-static XEXT_GENERATE_CLOSE_DISPLAY (close_display, shm_info)
-
-static XEXT_GENERATE_ERROR_STRING (error_string, shm_extension_name,
- ShmNumberErrors, shm_error_list)
-
-
-static Bool
-wire_to_event (Display *dpy, XEvent *re, xEvent *event)
-{
- XExtDisplayInfo *info = find_display (dpy);
- XShmCompletionEvent *se;
- xShmCompletionEvent *sevent;
-
- ShmCheckExtension (dpy, info, False);
-
- switch ((event->u.u.type & 0x7f) - info->codes->first_event) {
- case ShmCompletion:
- se = (XShmCompletionEvent *) re;
- sevent = (xShmCompletionEvent *) event;
- se->type = sevent->type & 0x7f;
- se->serial = _XSetLastRequestRead(dpy,(xGenericReply *) event);
- se->send_event = (sevent->type & 0x80) != 0;
- se->display = dpy;
- se->drawable = sevent->drawable;
- se->major_code = sevent->majorEvent;
- se->minor_code = sevent->minorEvent;
- se->shmseg = sevent->shmseg;
- se->offset = sevent->offset;
- return True;
- }
- return False;
-}
-
-static Status
-event_to_wire (Display *dpy, XEvent *re, xEvent *event)
-{
- XExtDisplayInfo *info = find_display (dpy);
- XShmCompletionEvent *se;
- xShmCompletionEvent *sevent;
-
- ShmCheckExtension (dpy, info, 0);
-
- switch ((re->type & 0x7f) - info->codes->first_event) {
- case ShmCompletion:
- se = (XShmCompletionEvent *) re;
- sevent = (xShmCompletionEvent *) event;
- sevent->type = se->type | (se->send_event ? 0x80 : 0);
- sevent->sequenceNumber = se->serial & 0xffff;
- sevent->drawable = se->drawable;
- sevent->majorEvent = se->major_code;
- sevent->minorEvent = se->minor_code;
- sevent->shmseg = se->shmseg;
- sevent->offset = se->offset;
- return True;
- }
- return False;
-}
-
-/*****************************************************************************
- * *
- * public Shared Memory Extension routines *
- * *
- *****************************************************************************/
-
-Bool XShmQueryExtension (Display *dpy /* int *event_basep, *error_basep */)
-{
- XExtDisplayInfo *info = find_display (dpy);
-
- if (XextHasExtension(info)) {
-/* *event_basep = info->codes->first_event;
- *error_basep = info->codes->error_event; */
- return True;
- } else {
- return False;
- }
-}
-
-
-int XShmGetEventBase(Display *dpy)
-{
- XExtDisplayInfo *info = find_display (dpy);
-
- if (XextHasExtension(info)) {
- return info->codes->first_event;
- } else {
- return -1;
- }
-}
-
-
-Bool XShmQueryVersion(
- Display *dpy,
- int *majorVersion,
- int *minorVersion,
- Bool *sharedPixmaps)
-{
- XExtDisplayInfo *info = find_display (dpy);
- xShmQueryVersionReply rep;
- register xShmQueryVersionReq *req;
-
- ShmCheckExtension (dpy, info, False);
-
- LockDisplay(dpy);
- GetReq(ShmQueryVersion, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmQueryVersion;
- if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
- UnlockDisplay(dpy);
- SyncHandle();
- return False;
- }
- *majorVersion = rep.majorVersion;
- *minorVersion = rep.minorVersion;
- *sharedPixmaps = rep.sharedPixmaps ? True : False;
- UnlockDisplay(dpy);
- SyncHandle();
- return True;
-}
-
-
-int XShmPixmapFormat(Display *dpy)
-{
- XExtDisplayInfo *info = find_display (dpy);
- xShmQueryVersionReply rep;
- register xShmQueryVersionReq *req;
-
- ShmCheckExtension (dpy, info, False);
-
- LockDisplay(dpy);
- GetReq(ShmQueryVersion, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmQueryVersion;
- if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
- UnlockDisplay(dpy);
- SyncHandle();
- return 0;
- }
- UnlockDisplay(dpy);
- SyncHandle();
- if (rep.sharedPixmaps &&
- (rep.majorVersion > 1 || rep.minorVersion > 0))
- return rep.pixmapFormat;
- return 0;
-}
-
-
-Bool XShmAttach(Display *dpy, XShmSegmentInfo *shminfo)
-{
- XExtDisplayInfo *info = find_display (dpy);
- register xShmAttachReq *req;
-
- ShmCheckExtension (dpy, info, 0);
-
- LockDisplay(dpy);
- GetReq(ShmAttach, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmAttach;
- req->shmseg = shminfo->shmseg = XAllocID(dpy);
- req->shmid = shminfo->shmid;
- req->readOnly = shminfo->readOnly ? xTrue : xFalse;
- UnlockDisplay(dpy);
- SyncHandle();
- return 1;
-}
-
-
-Bool XShmDetach(Display *dpy, XShmSegmentInfo *shminfo)
-{
- XExtDisplayInfo *info = find_display (dpy);
- register xShmDetachReq *req;
-
- ShmCheckExtension (dpy, info, 0);
-
- LockDisplay(dpy);
- GetReq(ShmDetach, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmDetach;
- req->shmseg = shminfo->shmseg;
- UnlockDisplay(dpy);
- SyncHandle();
- return 1;
-}
-
-static int _XShmDestroyImage (XImage *ximage)
-{
- Xfree((char *)ximage);
- return 1;
-}
-
-#define ROUNDUP(nbytes, pad) ((((nbytes) + ((pad) - 1)) / (pad)) * (pad))
-
-XImage *XShmCreateImage (
- register Display *dpy,
- register Visual *visual,
- unsigned int depth,
- int format,
- char *data,
- XShmSegmentInfo *shminfo,
- unsigned int width,
- unsigned int height)
-{
- register XImage *image;
-
- image = (XImage *)Xcalloc(1, (unsigned)sizeof(XImage));
- if (!image)
- return image;
- image->data = data;
- image->obdata = (char *)shminfo;
- image->width = width;
- image->height = height;
- image->depth = depth;
- image->format = format;
- image->byte_order = dpy->byte_order;
- image->bitmap_unit = dpy->bitmap_unit;
- image->bitmap_bit_order = dpy->bitmap_bit_order;
- image->bitmap_pad = _XGetScanlinePad(dpy, depth);
- image->xoffset = 0;
- if (visual) {
- image->red_mask = visual->red_mask;
- image->green_mask = visual->green_mask;
- image->blue_mask = visual->blue_mask;
- } else {
- image->red_mask = image->green_mask = image->blue_mask = 0;
- }
- if (format == ZPixmap)
- image->bits_per_pixel = _XGetBitsPerPixel(dpy, (int)depth);
- else
- image->bits_per_pixel = 1;
- image->bytes_per_line = ROUNDUP((image->bits_per_pixel * width),
- image->bitmap_pad) >> 3;
- _XInitImageFuncPtrs(image);
- image->f.destroy_image = _XShmDestroyImage;
- return image;
-}
-
-Bool XShmPutImage (
- register Display *dpy,
- Drawable d,
- GC gc,
- register XImage *image,
- int src_x, int src_y, int dst_x, int dst_y,
- unsigned int src_width, unsigned int src_height,
- Bool send_event)
-{
- XExtDisplayInfo *info = find_display (dpy);
- XShmSegmentInfo *shminfo = (XShmSegmentInfo *)image->obdata;
- register xShmPutImageReq *req;
-
- ShmCheckExtension (dpy, info, 0);
- if (!shminfo) return 0;
-
- LockDisplay(dpy);
- FlushGC(dpy, gc);
- GetReq(ShmPutImage, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmPutImage;
- req->drawable = d;
- req->gc = gc->gid;
- req->srcX = src_x;
- req->srcY = src_y;
- req->srcWidth = src_width;
- req->srcHeight = src_height;
- req->dstX = dst_x;
- req->dstY = dst_y;
- req->totalWidth = image->width;
- req->totalHeight = image->height;
- req->depth = image->depth;
- req->format = image->format;
- req->sendEvent = send_event;
- req->shmseg = shminfo->shmseg;
- req->offset = image->data - shminfo->shmaddr;
- UnlockDisplay(dpy);
- SyncHandle();
- return 1;
-}
-
-
-Bool XShmGetImage(
- register Display *dpy,
- Drawable d,
- XImage *image,
- int x, int y,
- unsigned long plane_mask)
-{
- XExtDisplayInfo *info = find_display (dpy);
- XShmSegmentInfo *shminfo = (XShmSegmentInfo *)image->obdata;
- register xShmGetImageReq *req;
- xShmGetImageReply rep;
- register Visual *visual;
-
- ShmCheckExtension (dpy, info, 0);
- if (!shminfo) return 0;
-
- LockDisplay(dpy);
- GetReq(ShmGetImage, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmGetImage;
- req->drawable = d;
- req->x = x;
- req->y = y;
- req->width = image->width;
- req->height = image->height;
- req->planeMask = plane_mask;
- req->format = image->format;
- req->shmseg = shminfo->shmseg;
- req->offset = image->data - shminfo->shmaddr;
- if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
- UnlockDisplay(dpy);
- SyncHandle();
- return 0;
- }
- visual = _XVIDtoVisual(dpy, rep.visual);
- if (visual) {
- image->red_mask = visual->red_mask;
- image->green_mask = visual->green_mask;
- image->blue_mask = visual->blue_mask;
- } else {
- image->red_mask = image->green_mask = image->blue_mask = 0;
- }
- UnlockDisplay(dpy);
- SyncHandle();
- return 1;
-}
-
-Pixmap XShmCreatePixmap (
- register Display *dpy,
- Drawable d,
- char *data,
- XShmSegmentInfo *shminfo,
- unsigned int width, unsigned int height, unsigned int depth)
-{
- XExtDisplayInfo *info = find_display (dpy);
- Pixmap pid;
- register xShmCreatePixmapReq *req;
-
- ShmCheckExtension (dpy, info, 0);
-
- LockDisplay(dpy);
- GetReq(ShmCreatePixmap, req);
- req->reqType = info->codes->major_opcode;
- req->shmReqType = X_ShmCreatePixmap;
- req->drawable = d;
- req->width = width;
- req->height = height;
- req->depth = depth;
- req->shmseg = shminfo->shmseg;
- req->offset = data - shminfo->shmaddr;
- pid = req->pid = XAllocID(dpy);
- UnlockDisplay(dpy);
- SyncHandle();
- return pid;
-}
+/* + * +Copyright 1989, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +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 +OPEN GROUP 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 Open Group 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 Open Group. + * + * Author: Bob Scheifler and Keith Packard, MIT X Consortium + */ + +/* THIS IS NOT AN X CONSORTIUM STANDARD OR AN X PROJECT TEAM SPECIFICATION */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <X11/Xlibint.h> +#include <X11/ImUtil.h> +#include <X11/extensions/XShm.h> +#include <X11/extensions/shmproto.h> +#include <X11/extensions/Xext.h> +#include <X11/extensions/extutil.h> + +static XExtensionInfo _shm_info_data; +static XExtensionInfo *shm_info = &_shm_info_data; +static /* const */ char *shm_extension_name = SHMNAME; + +#define ShmCheckExtension(dpy,i,val) \ + XextCheckExtension (dpy, i, shm_extension_name, val) + +/***************************************************************************** + * * + * private utility routines * + * * + *****************************************************************************/ + +static int close_display(Display *dpy, XExtCodes *codes); +static char *error_string(Display *dpy, int code, XExtCodes *codes, + char *buf, int n); +static Bool wire_to_event (Display *dpy, XEvent *re, xEvent *event); +static Status event_to_wire (Display *dpy, XEvent *re, xEvent *event); +static /* const */ XExtensionHooks shm_extension_hooks = { + NULL, /* create_gc */ + NULL, /* copy_gc */ + NULL, /* flush_gc */ + NULL, /* free_gc */ + NULL, /* create_font */ + NULL, /* free_font */ + close_display, /* close_display */ + wire_to_event, /* wire_to_event */ + event_to_wire, /* event_to_wire */ + NULL, /* error */ + error_string, /* error_string */ +}; + +static /* const */ char *shm_error_list[] = { + "BadShmSeg", /* BadShmSeg */ +}; + +static XEXT_GENERATE_FIND_DISPLAY (find_display, shm_info, shm_extension_name, + &shm_extension_hooks, ShmNumberEvents, NULL) + +static XEXT_GENERATE_CLOSE_DISPLAY (close_display, shm_info) + +static XEXT_GENERATE_ERROR_STRING (error_string, shm_extension_name, + ShmNumberErrors, shm_error_list) + + +static Bool +wire_to_event (Display *dpy, XEvent *re, xEvent *event) +{ + XExtDisplayInfo *info = find_display (dpy); + XShmCompletionEvent *se; + xShmCompletionEvent *sevent; + + ShmCheckExtension (dpy, info, False); + + switch ((event->u.u.type & 0x7f) - info->codes->first_event) { + case ShmCompletion: + se = (XShmCompletionEvent *) re; + sevent = (xShmCompletionEvent *) event; + se->type = sevent->type & 0x7f; + se->serial = _XSetLastRequestRead(dpy,(xGenericReply *) event); + se->send_event = (sevent->type & 0x80) != 0; + se->display = dpy; + se->drawable = sevent->drawable; + se->major_code = sevent->majorEvent; + se->minor_code = sevent->minorEvent; + se->shmseg = sevent->shmseg; + se->offset = sevent->offset; + return True; + } + return False; +} + +static Status +event_to_wire (Display *dpy, XEvent *re, xEvent *event) +{ + XExtDisplayInfo *info = find_display (dpy); + XShmCompletionEvent *se; + xShmCompletionEvent *sevent; + + ShmCheckExtension (dpy, info, 0); + + switch ((re->type & 0x7f) - info->codes->first_event) { + case ShmCompletion: + se = (XShmCompletionEvent *) re; + sevent = (xShmCompletionEvent *) event; + sevent->type = se->type | (se->send_event ? 0x80 : 0); + sevent->sequenceNumber = se->serial & 0xffff; + sevent->drawable = se->drawable; + sevent->majorEvent = se->major_code; + sevent->minorEvent = se->minor_code; + sevent->shmseg = se->shmseg; + sevent->offset = se->offset; + return True; + } + return False; +} + +/***************************************************************************** + * * + * public Shared Memory Extension routines * + * * + *****************************************************************************/ + +Bool XShmQueryExtension (Display *dpy /* int *event_basep, *error_basep */) +{ + XExtDisplayInfo *info = find_display (dpy); + + if (XextHasExtension(info)) { +/* *event_basep = info->codes->first_event; + *error_basep = info->codes->error_event; */ + return True; + } else { + return False; + } +} + + +int XShmGetEventBase(Display *dpy) +{ + XExtDisplayInfo *info = find_display (dpy); + + if (XextHasExtension(info)) { + return info->codes->first_event; + } else { + return -1; + } +} + + +Bool XShmQueryVersion( + Display *dpy, + int *majorVersion, + int *minorVersion, + Bool *sharedPixmaps) +{ + XExtDisplayInfo *info = find_display (dpy); + xShmQueryVersionReply rep; + register xShmQueryVersionReq *req; + + ShmCheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(ShmQueryVersion, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmQueryVersion; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + *majorVersion = rep.majorVersion; + *minorVersion = rep.minorVersion; + *sharedPixmaps = rep.sharedPixmaps ? True : False; + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + + +int XShmPixmapFormat(Display *dpy) +{ + XExtDisplayInfo *info = find_display (dpy); + xShmQueryVersionReply rep; + register xShmQueryVersionReq *req; + + ShmCheckExtension (dpy, info, False); + + LockDisplay(dpy); + GetReq(ShmQueryVersion, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmQueryVersion; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return 0; + } + UnlockDisplay(dpy); + SyncHandle(); + if (rep.sharedPixmaps && + (rep.majorVersion > 1 || rep.minorVersion > 0)) + return rep.pixmapFormat; + return 0; +} + + +Bool XShmAttach(Display *dpy, XShmSegmentInfo *shminfo) +{ + XExtDisplayInfo *info = find_display (dpy); + register xShmAttachReq *req; + + ShmCheckExtension (dpy, info, 0); + + LockDisplay(dpy); + GetReq(ShmAttach, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmAttach; + req->shmseg = shminfo->shmseg = XAllocID(dpy); + req->shmid = shminfo->shmid; + req->readOnly = shminfo->readOnly ? xTrue : xFalse; + UnlockDisplay(dpy); + SyncHandle(); + return 1; +} + + +Bool XShmDetach(Display *dpy, XShmSegmentInfo *shminfo) +{ + XExtDisplayInfo *info = find_display (dpy); + register xShmDetachReq *req; + + ShmCheckExtension (dpy, info, 0); + + LockDisplay(dpy); + GetReq(ShmDetach, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmDetach; + req->shmseg = shminfo->shmseg; + UnlockDisplay(dpy); + SyncHandle(); + return 1; +} + +static int _XShmDestroyImage (XImage *ximage) +{ + Xfree((char *)ximage); + return 1; +} + +#define ROUNDUP(nbytes, pad) ((((nbytes) + ((pad) - 1)) / (pad)) * (pad)) + +XImage *XShmCreateImage ( + register Display *dpy, + register Visual *visual, + unsigned int depth, + int format, + char *data, + XShmSegmentInfo *shminfo, + unsigned int width, + unsigned int height) +{ + register XImage *image; + + image = (XImage *)Xcalloc(1, (unsigned)sizeof(XImage)); + if (!image) + return image; + image->data = data; + image->obdata = (char *)shminfo; + image->width = width; + image->height = height; + image->depth = depth; + image->format = format; + image->byte_order = dpy->byte_order; + image->bitmap_unit = dpy->bitmap_unit; + image->bitmap_bit_order = dpy->bitmap_bit_order; + image->bitmap_pad = _XGetScanlinePad(dpy, depth); + image->xoffset = 0; + if (visual) { + image->red_mask = visual->red_mask; + image->green_mask = visual->green_mask; + image->blue_mask = visual->blue_mask; + } else { + image->red_mask = image->green_mask = image->blue_mask = 0; + } + if (format == ZPixmap) + image->bits_per_pixel = _XGetBitsPerPixel(dpy, (int)depth); + else + image->bits_per_pixel = 1; + image->bytes_per_line = ROUNDUP((image->bits_per_pixel * width), + image->bitmap_pad) >> 3; + _XInitImageFuncPtrs(image); + image->f.destroy_image = _XShmDestroyImage; + return image; +} + +Bool XShmPutImage ( + register Display *dpy, + Drawable d, + GC gc, + register XImage *image, + int src_x, int src_y, int dst_x, int dst_y, + unsigned int src_width, unsigned int src_height, + Bool send_event) +{ + XExtDisplayInfo *info = find_display (dpy); + XShmSegmentInfo *shminfo = (XShmSegmentInfo *)image->obdata; + register xShmPutImageReq *req; + + ShmCheckExtension (dpy, info, 0); + if (!shminfo) return 0; + + LockDisplay(dpy); + FlushGC(dpy, gc); + GetReq(ShmPutImage, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmPutImage; + req->drawable = d; + req->gc = gc->gid; + req->srcX = src_x; + req->srcY = src_y; + req->srcWidth = src_width; + req->srcHeight = src_height; + req->dstX = dst_x; + req->dstY = dst_y; + req->totalWidth = image->width; + req->totalHeight = image->height; + req->depth = image->depth; + req->format = image->format; + req->sendEvent = send_event; + req->shmseg = shminfo->shmseg; + req->offset = image->data - shminfo->shmaddr; + UnlockDisplay(dpy); + SyncHandle(); + return 1; +} + + +Bool XShmGetImage( + register Display *dpy, + Drawable d, + XImage *image, + int x, int y, + unsigned long plane_mask) +{ + XExtDisplayInfo *info = find_display (dpy); + XShmSegmentInfo *shminfo = (XShmSegmentInfo *)image->obdata; + register xShmGetImageReq *req; + xShmGetImageReply rep; + register Visual *visual; + + ShmCheckExtension (dpy, info, 0); + if (!shminfo) return 0; + + LockDisplay(dpy); + GetReq(ShmGetImage, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmGetImage; + req->drawable = d; + req->x = x; + req->y = y; + req->width = image->width; + req->height = image->height; + req->planeMask = plane_mask; + req->format = image->format; + req->shmseg = shminfo->shmseg; + req->offset = image->data - shminfo->shmaddr; + if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return 0; + } + visual = _XVIDtoVisual(dpy, rep.visual); + if (visual) { + image->red_mask = visual->red_mask; + image->green_mask = visual->green_mask; + image->blue_mask = visual->blue_mask; + } else { + image->red_mask = image->green_mask = image->blue_mask = 0; + } + UnlockDisplay(dpy); + SyncHandle(); + return 1; +} + +Pixmap XShmCreatePixmap ( + register Display *dpy, + Drawable d, + char *data, + XShmSegmentInfo *shminfo, + unsigned int width, unsigned int height, unsigned int depth) +{ + XExtDisplayInfo *info = find_display (dpy); + Pixmap pid; + register xShmCreatePixmapReq *req; + + ShmCheckExtension (dpy, info, 0); + + LockDisplay(dpy); + GetReq(ShmCreatePixmap, req); + req->reqType = info->codes->major_opcode; + req->shmReqType = X_ShmCreatePixmap; + req->drawable = d; + req->width = width; + req->height = height; + req->depth = depth; + req->shmseg = shminfo->shmseg; + req->offset = data - shminfo->shmaddr; + pid = req->pid = XAllocID(dpy); + UnlockDisplay(dpy); + SyncHandle(); + return pid; +} |