Added libXext

1 files changed, 436 insertions, 0 deletions

diff --git a/libXext/src/XShm.c b/libXext/src/XShm.c
new file mode 100644
index 000000000..38efa9fa4
--- /dev/null
+++ b/libXext/src/XShm.c
@@ -0,0 +1,436 @@
+/* $XdotOrg: $ */
+/*
+ * $Xorg: XShm.c,v 1.4 2001/02/09 02:03:49 xorgcvs Exp $
+ *
+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
+ */
+/* $XFree86: xc/lib/Xext/XShm.c,v 1.6 2002/10/16 02:19:22 dawes Exp $ */
+
+/* THIS IS NOT AN X CONSORTIUM STANDARD OR AN X PROJECT TEAM SPECIFICATION */
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#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;
+}
+
+
+Status 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;
+}
+
+
+Status 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;
+}
+
+Status 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;
+}
+
+
+Status 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;
+}