[PATCH] libXrandr: add support for provider objects.
Dave Airlie
airlied at gmail.com
Thu Jul 19 22:27:00 PDT 2012
From: Dave Airlie <airlied at redhat.com>
This adds the client side libXrandr support for randr 1.4,
and provider objects.
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
include/X11/extensions/Xrandr.h | 101 ++++++++++++
src/Makefile.am | 4 +-
src/Xrandr.c | 65 +++++++-
src/XrrProvider.c | 217 +++++++++++++++++++++++++
src/XrrProviderProperty.c | 339 +++++++++++++++++++++++++++++++++++++++
5 files changed, 724 insertions(+), 2 deletions(-)
create mode 100644 src/XrrProvider.c
create mode 100644 src/XrrProviderProperty.c
diff --git a/include/X11/extensions/Xrandr.h b/include/X11/extensions/Xrandr.h
index 4b29c3f..b1baf8a 100644
--- a/include/X11/extensions/Xrandr.h
+++ b/include/X11/extensions/Xrandr.h
@@ -39,6 +39,7 @@ _XFUNCPROTOBEGIN
typedef XID RROutput;
typedef XID RRCrtc;
typedef XID RRMode;
+typedef XID RRProvider;
typedef struct {
int width, height;
@@ -118,6 +119,41 @@ typedef struct {
int state; /* NewValue, Deleted */
} XRROutputPropertyNotifyEvent;
+typedef struct {
+ int type; /* event base */
+ unsigned long serial; /* # of last request processed by server */
+ Bool send_event; /* true if this came from a SendEvent request */
+ Display *display; /* Display the event was read from */
+ Window window; /* window which selected for this event */
+ int subtype; /* RRNotify_ProviderChange */
+ RRProvider provider; /* current provider (or None) */
+ Time timestamp; /* time of change */
+ unsigned int current_role;
+} XRRProviderChangeNotifyEvent;
+
+typedef struct {
+ int type; /* event base */
+ unsigned long serial; /* # of last request processed by server */
+ Bool send_event; /* true if this came from a SendEvent request */
+ Display *display; /* Display the event was read from */
+ Window window; /* window which selected for this event */
+ int subtype; /* RRNotify_ProviderProperty */
+ RRProvider provider; /* related provider */
+ Atom property; /* changed property */
+ Time timestamp; /* time of change */
+ int state; /* NewValue, Deleted */
+} XRRProviderPropertyNotifyEvent;
+
+typedef struct {
+ int type; /* event base */
+ unsigned long serial; /* # of last request processed by server */
+ Bool send_event; /* true if this came from a SendEvent request */
+ Display *display; /* Display the event was read from */
+ Window window; /* window which selected for this event */
+ int subtype; /* RRNotify_ResourceChange */
+ Time timestamp; /* time of change */
+} XRRResourceChangeNotifyEvent;
+
/* internal representation is private to the library */
typedef struct _XRRScreenConfiguration XRRScreenConfiguration;
@@ -451,6 +487,71 @@ RROutput
XRRGetOutputPrimary(Display *dpy,
Window window);
+typedef struct _XRRProviderResources {
+ Time timestamp;
+ int nproviders;
+ RRProvider *providers;
+} XRRProviderResources;
+
+XRRProviderResources *
+XRRGetProviderResources(Display *dpy, Window window);
+
+void
+XRRFreeProviderResources(XRRProviderResources *resources);
+
+typedef struct _XRRProviderInfo {
+ unsigned int capabilities;
+ int ncrtcs;
+ RRCrtc *crtcs;
+ int noutputs;
+ RROutput *outputs;
+ char *name;
+ int nassociatedproviders;
+ RRProvider *associated_providers;
+ unsigned int *associated_capability;
+ int nameLen;
+} XRRProviderInfo;
+
+XRRProviderInfo *
+XRRGetProviderInfo(Display *dpy, XRRScreenResources *resources, RRProvider provider);
+
+void
+XRRFreeProviderInfo(XRRProviderInfo *provider);
+
+int
+XRRSetProviderOutputSource(Display *dpy, XID provider, XID source_provider);
+
+int
+XRRSetProviderOffloadSink(Display *dpy, XID provider, XID sink_provider);
+
+Atom *
+XRRListProviderProperties (Display *dpy, RRProvider provider, int *nprop);
+
+XRRPropertyInfo *
+XRRQueryProviderProperty (Display *dpy, RRProvider provider, Atom property);
+
+void
+XRRConfigureProviderProperty (Display *dpy, RRProvider provider, Atom property,
+ Bool pending, Bool range, int num_values,
+ long *values);
+
+void
+XRRChangeProviderProperty (Display *dpy, RRProvider provider,
+ Atom property, Atom type,
+ int format, int mode,
+ _Xconst unsigned char *data, int nelements);
+
+void
+XRRDeleteProviderProperty (Display *dpy, RRProvider provider, Atom property);
+
+int
+XRRGetProviderProperty (Display *dpy, RRProvider provider,
+ Atom property, long offset, long length,
+ Bool _delete, Bool pending, Atom req_type,
+ Atom *actual_type, int *actual_format,
+ unsigned long *nitems, unsigned long *bytes_after,
+ unsigned char **prop);
+
_XFUNCPROTOEND
#endif /* _XRANDR_H_ */
diff --git a/src/Makefile.am b/src/Makefile.am
index d80a3c2..7a47b9c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -8,7 +8,9 @@ libXrandr_la_SOURCES = \
XrrMode.c \
XrrOutput.c \
XrrProperty.c \
- XrrScreen.c
+ XrrScreen.c \
+ XrrProvider.c \
+ XrrProviderProperty.c
libXrandr_la_LIBADD = @RANDR_LIBS@
diff --git a/src/Xrandr.c b/src/Xrandr.c
index 2bdbe97..b1e97ec 100644
--- a/src/Xrandr.c
+++ b/src/Xrandr.c
@@ -137,7 +137,46 @@ static Bool XRRWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
aevent->state = awire->state;
return True;
}
-
+ case RRNotify_ProviderChange: {
+ XRRProviderChangeNotifyEvent *aevent = (XRRProviderChangeNotifyEvent *) event;
+ xRRProviderChangeNotifyEvent *awire = (xRRProviderChangeNotifyEvent *) wire;
+ aevent->type = awire->type & 0x7F;
+ aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
+ aevent->send_event = (awire->type & 0x80) != 0;
+ aevent->display = dpy;
+ aevent->window = awire->window;
+ aevent->subtype = awire->subCode;
+ aevent->provider = awire->provider;
+ aevent->timestamp = awire->timestamp;
+ return True;
+ }
+ case RRNotify_ProviderProperty: {
+ XRRProviderPropertyNotifyEvent *aevent = (XRRProviderPropertyNotifyEvent *) event;
+ xRRProviderPropertyNotifyEvent *awire = (xRRProviderPropertyNotifyEvent *) wire;
+ aevent->type = awire->type & 0x7F;
+ aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
+ aevent->send_event = (awire->type & 0x80) != 0;
+ aevent->display = dpy;
+ aevent->window = awire->window;
+ aevent->subtype = awire->subCode;
+ aevent->provider = awire->provider;
+ aevent->property = awire->atom;
+ aevent->timestamp = awire->timestamp;
+ aevent->state = awire->state;
+ return True;
+ }
+ case RRNotify_ResourceChange: {
+ XRRResourceChangeNotifyEvent *aevent = (XRRResourceChangeNotifyEvent *) event;
+ xRRResourceChangeNotifyEvent *awire = (xRRResourceChangeNotifyEvent *) wire;
+ aevent->type = awire->type & 0x7F;
+ aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
+ aevent->send_event = (awire->type & 0x80) != 0;
+ aevent->display = dpy;
+ aevent->window = awire->window;
+ aevent->subtype = awire->subCode;
+ aevent->timestamp = awire->timestamp;
+ return True;
+ }
break;
}
}
@@ -214,6 +253,30 @@ static Status XRREventToWire(Display *dpy, XEvent *event, xEvent *wire)
awire->state = aevent->state;
return True;
}
+ case RRNotify_ProviderChange: {
+ xRRProviderChangeNotifyEvent *awire = (xRRProviderChangeNotifyEvent *) wire;
+ XRRProviderChangeNotifyEvent *aevent = (XRRProviderChangeNotifyEvent *) event;
+ awire->window = aevent->window;
+ awire->provider = aevent->provider;
+ return True;
+ }
+ case RRNotify_ProviderProperty: {
+ xRRProviderPropertyNotifyEvent *awire = (xRRProviderPropertyNotifyEvent *) wire;
+ XRRProviderPropertyNotifyEvent *aevent = (XRRProviderPropertyNotifyEvent *) event;
+ awire->window = aevent->window;
+ awire->provider = aevent->provider;
+ awire->atom = aevent->property;
+ awire->timestamp = aevent->timestamp;
+ awire->state = aevent->state;
+ return True;
+ }
+ case RRNotify_ResourceChange: {
+ xRRResourceChangeNotifyEvent *awire = (xRRResourceChangeNotifyEvent *) wire;
+ XRRResourceChangeNotifyEvent *aevent = (XRRResourceChangeNotifyEvent *) event;
+ awire->window = aevent->window;
+ awire->timestamp = aevent->timestamp;
+ return True;
+ }
}
}
}
diff --git a/src/XrrProvider.c b/src/XrrProvider.c
new file mode 100644
index 0000000..fcd06ff
--- /dev/null
+++ b/src/XrrProvider.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright © 2011 Dave Airlie
+ *
+ * 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, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <X11/Xlib.h>
+/* we need to be able to manipulate the Display structure on events */
+#include <X11/Xlibint.h>
+#include <X11/extensions/render.h>
+#include <X11/extensions/Xrender.h>
+#include "Xrandrint.h"
+
+XRRProviderResources *
+XRRGetProviderResources(Display *dpy, Window window)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRGetProvidersReply rep;
+ xRRGetProvidersReq *req;
+ XRRProviderResources *xrpr;
+ long nbytes, nbytesRead;
+ int rbytes;
+
+ RRCheckExtension (dpy, info, NULL);
+
+ LockDisplay (dpy);
+
+ GetReq(RRGetProviders, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRGetProviders;
+ req->window = window;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ nbytes = (long) rep.length << 2;
+
+ nbytesRead = (long) (rep.nProviders * 4);
+
+ rbytes = (sizeof(XRRProviderResources) + rep.nProviders * sizeof(RRProvider));
+ xrpr = (XRRProviderResources *) Xmalloc(rbytes);
+
+ if (xrpr == NULL) {
+ _XEatData (dpy, (unsigned long) nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ xrpr->timestamp = rep.timestamp;
+ xrpr->nproviders = rep.nProviders;
+ xrpr->providers = (RRProvider *)(xrpr + 1);
+
+ _XRead32(dpy, xrpr->providers, rep.nProviders << 2);
+
+ if (nbytes > nbytesRead)
+ _XEatData (dpy, (unsigned long) (nbytes - nbytesRead));
+
+
+ UnlockDisplay (dpy);
+ SyncHandle();
+
+ return (XRRProviderResources *) xrpr;
+}
+
+void
+XRRFreeProviderResources(XRRProviderResources *provider_resources)
+{
+ free(provider_resources);
+}
+
+#define ProviderInfoExtra (SIZEOF(xRRGetProviderInfoReply) - 32)
+XRRProviderInfo *
+XRRGetProviderInfo(Display *dpy, XRRScreenResources *resources, RRProvider provider)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRGetProviderInfoReply rep;
+ xRRGetProviderInfoReq *req;
+ int nbytes, nbytesRead, rbytes;
+ XRRProviderInfo *xpi;
+
+ RRCheckExtension (dpy, info, NULL);
+
+ LockDisplay (dpy);
+ GetReq (RRGetProviderInfo, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRGetProviderInfo;
+ req->provider = provider;
+ req->configTimestamp = resources->configTimestamp;
+
+ if (!_XReply (dpy, (xReply *) &rep, ProviderInfoExtra >> 2, xFalse))
+ {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ nbytes = ((long) rep.length << 2) - ProviderInfoExtra;
+
+ nbytesRead = (long)(rep.nCrtcs * 4 +
+ rep.nOutputs * 4 +
+ rep.nAssociatedProviders * 8 +
+ ((rep.nameLength + 3) & ~3));
+
+ rbytes = (sizeof(XRRProviderInfo) +
+ rep.nCrtcs * sizeof(RRCrtc) +
+ rep.nOutputs * sizeof(RROutput) +
+ rep.nAssociatedProviders * (sizeof(RRProvider) + sizeof(unsigned int))+
+ rep.nameLength + 1);
+
+ xpi = (XRRProviderInfo *)Xmalloc(rbytes);
+ if (xpi == NULL) {
+ _XEatData (dpy, (unsigned long) nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ xpi->capabilities = rep.capabilities;
+ xpi->ncrtcs = rep.nCrtcs;
+ xpi->noutputs = rep.nOutputs;
+ xpi->nassociatedproviders = rep.nAssociatedProviders;
+ xpi->crtcs = (RRCrtc *)(xpi + 1);
+ xpi->outputs = (RROutput *)(xpi->crtcs + rep.nCrtcs);
+ xpi->associated_providers = (RRProvider *)(xpi->outputs + rep.nOutputs);
+ xpi->associated_capability = (unsigned int *)(xpi->associated_providers + rep.nAssociatedProviders);
+ xpi->name = (char *)(xpi->associated_capability + rep.nAssociatedProviders);
+
+ _XRead32(dpy, xpi->crtcs, rep.nCrtcs << 2);
+ _XRead32(dpy, xpi->outputs, rep.nOutputs << 2);
+
+ _XRead32(dpy, xpi->associated_providers, rep.nAssociatedProviders << 2);
+ _XRead32(dpy, xpi->associated_capability, rep.nAssociatedProviders << 2);
+
+ _XReadPad(dpy, xpi->name, rep.nameLength);
+ xpi->name[rep.nameLength] = '\0';
+
+ /*
+ * Skip any extra data
+ */
+ if (nbytes > nbytesRead)
+ _XEatData (dpy, (unsigned long) (nbytes - nbytesRead));
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return (XRRProviderInfo *) xpi;
+}
+
+void
+XRRFreeProviderInfo(XRRProviderInfo *provider)
+{
+ free(provider);
+}
+
+int
+XRRSetProviderOutputSource(Display *dpy, XID provider,
+ XID source_provider)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRSetProviderOutputSourceReq *req;
+
+ RRCheckExtension (dpy, info, 0);
+ LockDisplay (dpy);
+ GetReq (RRSetProviderOutputSource, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRSetProviderOutputSource;
+ req->provider = provider;
+ req->source_provider = source_provider;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+}
+
+int
+XRRSetProviderOffloadSink(Display *dpy, XID provider,
+ XID sink_provider)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRSetProviderOffloadSinkReq *req;
+
+ RRCheckExtension (dpy, info, 0);
+ LockDisplay (dpy);
+ GetReq (RRSetProviderOffloadSink, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRSetProviderOffloadSink;
+ req->provider = provider;
+ req->sink_provider = sink_provider;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+}
diff --git a/src/XrrProviderProperty.c b/src/XrrProviderProperty.c
new file mode 100644
index 0000000..c8c08e9
--- /dev/null
+++ b/src/XrrProviderProperty.c
@@ -0,0 +1,339 @@
+/*
+ * Copyright © 2006 Keith Packard
+ *
+ * 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, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <X11/Xlib.h>
+/* we need to be able to manipulate the Display structure on events */
+#include <X11/Xlibint.h>
+#include <X11/extensions/render.h>
+#include <X11/extensions/Xrender.h>
+#include "Xrandrint.h"
+
+Atom *
+XRRListProviderProperties (Display *dpy, RRProvider provider, int *nprop)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRListProviderPropertiesReply rep;
+ xRRListProviderPropertiesReq *req;
+ int nbytes, rbytes;
+ Atom *props = NULL;
+
+ RRCheckExtension (dpy, info, NULL);
+
+ LockDisplay (dpy);
+ GetReq (RRListProviderProperties, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRListProviderProperties;
+ req->provider = provider;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ *nprop = 0;
+ return NULL;
+ }
+
+ if (rep.nAtoms) {
+ rbytes = rep.nAtoms * sizeof (Atom);
+ nbytes = rep.nAtoms << 2;
+
+ props = (Atom *) Xmalloc (rbytes);
+ if (props == NULL) {
+ _XEatData (dpy, nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ *nprop = 0;
+ return NULL;
+ }
+
+ _XRead32 (dpy, props, nbytes);
+ }
+
+ *nprop = rep.nAtoms;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return props;
+}
+
+XRRPropertyInfo *
+XRRQueryProviderProperty (Display *dpy, RRProvider provider, Atom property)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRQueryProviderPropertyReply rep;
+ xRRQueryProviderPropertyReq *req;
+ int rbytes, nbytes;
+ XRRPropertyInfo *prop_info;
+
+ RRCheckExtension (dpy, info, NULL);
+
+ LockDisplay (dpy);
+ GetReq (RRQueryProviderProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRQueryProviderProperty;
+ req->provider = provider;
+ req->property = property;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ rbytes = sizeof (XRRPropertyInfo) + rep.length * sizeof (long);
+ nbytes = rep.length << 2;
+
+ prop_info = (XRRPropertyInfo *) Xmalloc (rbytes);
+ if (prop_info == NULL) {
+ _XEatData (dpy, nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ prop_info->pending = rep.pending;
+ prop_info->range = rep.range;
+ prop_info->immutable = rep.immutable;
+ prop_info->num_values = rep.length;
+ if (rep.length != 0) {
+ prop_info->values = (long *) (prop_info + 1);
+ _XRead32 (dpy, prop_info->values, nbytes);
+ } else {
+ prop_info->values = NULL;
+ }
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return prop_info;
+}
+
+void
+XRRConfigureProviderProperty (Display *dpy, RRProvider provider, Atom property,
+ Bool pending, Bool range, int num_values,
+ long *values)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRConfigureProviderPropertyReq *req;
+ long len;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq (RRConfigureProviderProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRConfigureProviderProperty;
+ req->provider = provider;
+ req->property = property;
+ req->pending = pending;
+ req->range = range;
+
+ len = num_values;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)num_values << 2;
+ Data32 (dpy, values, len);
+ } /* else force BadLength */
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void
+XRRChangeProviderProperty (Display *dpy, RRProvider provider,
+ Atom property, Atom type,
+ int format, int mode,
+ _Xconst unsigned char *data, int nelements)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRChangeProviderPropertyReq *req;
+ long len;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq (RRChangeProviderProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRChangeProviderProperty;
+ req->provider = provider;
+ req->property = property;
+ req->type = type;
+ req->mode = mode;
+ if (nelements < 0) {
+ req->nUnits = 0;
+ req->format = 0; /* ask for garbage, get garbage */
+ } else {
+ req->nUnits = nelements;
+ req->format = format;
+ }
+
+ switch (req->format) {
+ case 8:
+ len = ((long)nelements + 3) >> 2;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ Data (dpy, (char *)data, nelements);
+ } /* else force BadLength */
+ break;
+
+ case 16:
+ len = ((long)nelements + 1) >> 1;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)nelements << 1;
+ Data16 (dpy, (short *) data, len);
+ } /* else force BadLength */
+ break;
+
+ case 32:
+ len = nelements;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)nelements << 2;
+ Data32 (dpy, (long *) data, len);
+ } /* else force BadLength */
+ break;
+
+ default:
+ /* BadValue will be generated */ ;
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void
+XRRDeleteProviderProperty (Display *dpy, RRProvider provider, Atom property)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRDeleteProviderPropertyReq *req;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq(RRDeleteProviderProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRDeleteProviderProperty;
+ req->provider = provider;
+ req->property = property;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+int
+XRRGetProviderProperty (Display *dpy, RRProvider provider,
+ Atom property, long offset, long length,
+ Bool delete, Bool pending, Atom req_type,
+ Atom *actual_type, int *actual_format,
+ unsigned long *nitems, unsigned long *bytes_after,
+ unsigned char **prop)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRGetProviderPropertyReply rep;
+ xRRGetProviderPropertyReq *req;
+ long nbytes, rbytes;
+
+ RRCheckExtension (dpy, info, 1);
+
+ LockDisplay (dpy);
+ GetReq (RRGetProviderProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRGetProviderProperty;
+ req->provider = provider;
+ req->property = property;
+ req->type = req_type;
+ req->longOffset = offset;
+ req->longLength = length;
+ req->delete = delete;
+ req->pending = pending;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return ((xError *)&rep)->errorCode;
+ }
+
+ *prop = (unsigned char *) NULL;
+ if (rep.propertyType != None) {
+ /*
+ * One extra byte is malloced than is needed to contain the property
+ * data, but this last byte is null terminated and convenient for
+ * returning string properties, so the client doesn't then have to
+ * recopy the string to make it null terminated.
+ */
+ switch (rep.format) {
+ case 8:
+ nbytes = rep.nItems;
+ rbytes = rep.nItems + 1;
+ if (rbytes > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes)))
+ _XReadPad (dpy, (char *) *prop, nbytes);
+ break;
+
+ case 16:
+ nbytes = rep.nItems << 1;
+ rbytes = rep.nItems * sizeof (short) + 1;
+ if (rbytes > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes)))
+ _XRead16Pad (dpy, (short *) *prop, nbytes);
+ break;
+
+ case 32:
+ nbytes = rep.nItems << 2;
+ rbytes = rep.nItems * sizeof (long) + 1;
+ if (rbytes > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes)))
+ _XRead32 (dpy, (long *) *prop, nbytes);
+ break;
+
+ default:
+ /*
+ * This part of the code should never be reached. If it is,
+ * the server sent back a property with an invalid format.
+ */
+ nbytes = rep.length << 2;
+ _XEatData(dpy, (unsigned long) nbytes);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return(BadImplementation);
+ }
+ if (! *prop) {
+ _XEatData(dpy, (unsigned long) nbytes);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return(BadAlloc);
+ }
+ (*prop)[rbytes - 1] = '\0';
+ }
+
+ *actual_type = rep.propertyType;
+ *actual_format = rep.format;
+ *nitems = rep.nItems;
+ *bytes_after = rep.bytesAfter;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return Success;
+}
--
1.7.10.2
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