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/*
* 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 <limits.h>
#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;
}
if (rep.length < INT_MAX >> 2) {
nbytes = (long) rep.length << 2;
nbytesRead = (long) (rep.nProviders * 4);
rbytes = (sizeof(XRRProviderResources) + rep.nProviders *
sizeof(RRProvider));
xrpr = Xmalloc(rbytes);
} else {
nbytes = 0;
nbytesRead = 0;
rbytes = 0;
xrpr = NULL;
}
if (xrpr == NULL) {
_XEatDataWords (dpy, rep.length);
UnlockDisplay (dpy);
SyncHandle ();
return NULL;
}
xrpr->timestamp = rep.timestamp;
xrpr->nproviders = rep.nProviders;
xrpr->providers = (RRProvider *)(xrpr + 1);
_XRead32(dpy, (long *) 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);
}
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, 0, xFalse))
{
UnlockDisplay (dpy);
SyncHandle ();
return NULL;
}
if (rep.length > INT_MAX >> 2)
{
_XEatDataWords (dpy, rep.length);
UnlockDisplay (dpy);
SyncHandle ();
return NULL;
}
nbytes = ((long) rep.length << 2);
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 = Xmalloc(rbytes);
if (xpi == NULL) {
_XEatDataWords (dpy, rep.length);
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, (long *) xpi->crtcs, rep.nCrtcs << 2);
_XRead32(dpy, (long *) xpi->outputs, rep.nOutputs << 2);
_XRead32(dpy, (long *) xpi->associated_providers, rep.nAssociatedProviders << 2);
/*
* _XRead32 reads a series of 32-bit values from the protocol and writes
* them out as a series of "long int" values, but associated_capability
* is defined as unsigned int *, so that won't work for this array.
* Instead we assume for now that "unsigned int" is also 32-bits, so
* the values can be read without any conversion.
*/
_XRead(dpy, (char *) 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;
}
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