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-rw-r--r--src/Xrender.c657
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diff --git a/src/Xrender.c b/src/Xrender.c
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+++ b/src/Xrender.c
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+/*
+ * $XFree86: xc/lib/Xrender/Xrender.c,v 1.14 2002/11/22 02:10:41 keithp Exp $
+ *
+ * Copyright © 2000 SuSE, Inc.
+ *
+ * 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 SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. SuSE makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * 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.
+ *
+ * Author: Keith Packard, SuSE, Inc.
+ */
+
+#include "Xrenderint.h"
+
+XExtensionInfo XRenderExtensionInfo;
+char XRenderExtensionName[] = RENDER_NAME;
+
+static int XRenderCloseDisplay(Display *dpy, XExtCodes *codes);
+
+static /* const */ XExtensionHooks render_extension_hooks = {
+ NULL, /* create_gc */
+ NULL, /* copy_gc */
+ NULL, /* flush_gc */
+ NULL, /* free_gc */
+ NULL, /* create_font */
+ NULL, /* free_font */
+ XRenderCloseDisplay, /* close_display */
+ NULL, /* wire_to_event */
+ NULL, /* event_to_wire */
+ NULL, /* error */
+ NULL, /* error_string */
+};
+
+XExtDisplayInfo *
+XRenderFindDisplay (Display *dpy)
+{
+ XExtDisplayInfo *dpyinfo;
+
+ dpyinfo = XextFindDisplay (&XRenderExtensionInfo, dpy);
+ if (!dpyinfo)
+ dpyinfo = XextAddDisplay (&XRenderExtensionInfo, dpy,
+ XRenderExtensionName,
+ &render_extension_hooks,
+ 0, 0);
+ return dpyinfo;
+}
+
+static int
+XRenderCloseDisplay (Display *dpy, XExtCodes *codes)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ if (info->data) XFree (info->data);
+
+ return XextRemoveDisplay (&XRenderExtensionInfo, dpy);
+}
+
+/****************************************************************************
+ * *
+ * Render public interfaces *
+ * *
+ ****************************************************************************/
+
+Bool XRenderQueryExtension (Display *dpy, int *event_basep, int *error_basep)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+
+ if (XextHasExtension(info)) {
+ *event_basep = info->codes->first_event;
+ *error_basep = info->codes->first_error;
+ return True;
+ } else {
+ return False;
+ }
+}
+
+
+Status XRenderQueryVersion (Display *dpy,
+ int *major_versionp,
+ int *minor_versionp)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ XRenderInfo *xri;
+
+ if (!XextHasExtension (info))
+ return 0;
+
+ if (!XRenderQueryFormats (dpy))
+ return 0;
+
+ xri = (XRenderInfo *) info->data;
+ *major_versionp = xri->major_version;
+ *minor_versionp = xri->minor_version;
+ return 1;
+}
+
+static XRenderPictFormat *
+_XRenderFindFormat (XRenderInfo *xri, PictFormat format)
+{
+ int nf;
+
+ for (nf = 0; nf < xri->nformat; nf++)
+ if (xri->format[nf].id == format)
+ return &xri->format[nf];
+ return 0;
+}
+
+static Visual *
+_XRenderFindVisual (Display *dpy, VisualID vid)
+{
+ return _XVIDtoVisual (dpy, vid);
+}
+
+typedef struct _renderVersionState {
+ unsigned long version_seq;
+ Bool error;
+ int major_version;
+ int minor_version;
+
+} _XrenderVersionState;
+
+static Bool
+_XRenderVersionHandler (Display *dpy,
+ xReply *rep,
+ char *buf,
+ int len,
+ XPointer data)
+{
+ xRenderQueryVersionReply replbuf;
+ xRenderQueryVersionReply *repl;
+ _XrenderVersionState *state = (_XrenderVersionState *) data;
+
+ if (dpy->last_request_read != state->version_seq)
+ return False;
+ if (rep->generic.type == X_Error)
+ {
+ state->error = True;
+ return False;
+ }
+ repl = (xRenderQueryVersionReply *)
+ _XGetAsyncReply(dpy, (char *)&replbuf, rep, buf, len,
+ (SIZEOF(xRenderQueryVersionReply) - SIZEOF(xReply)) >> 2,
+ True);
+ state->major_version = repl->majorVersion;
+ state->minor_version = repl->minorVersion;
+ return True;
+}
+
+Status
+XRenderQueryFormats (Display *dpy)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ _XAsyncHandler async;
+ _XrenderVersionState async_state;
+ xRenderQueryVersionReq *vreq;
+ xRenderQueryPictFormatsReply rep;
+ xRenderQueryPictFormatsReq *req;
+ XRenderInfo *xri;
+ XRenderPictFormat *format;
+ XRenderScreen *screen;
+ XRenderDepth *depth;
+ XRenderVisual *visual;
+ xPictFormInfo *xFormat;
+ xPictScreen *xScreen;
+ xPictDepth *xDepth;
+ xPictVisual *xVisual;
+ CARD32 *xSubpixel;
+ void *xData;
+ int nf, ns, nd, nv;
+ int rlength;
+ int nbytes;
+
+ RenderCheckExtension (dpy, info, 0);
+ LockDisplay (dpy);
+ if (info->data)
+ {
+ UnlockDisplay (dpy);
+ return 1;
+ }
+ GetReq (RenderQueryVersion, vreq);
+ vreq->reqType = info->codes->major_opcode;
+ vreq->renderReqType = X_RenderQueryVersion;
+ vreq->majorVersion = RENDER_MAJOR;
+ vreq->minorVersion = RENDER_MINOR;
+
+ async_state.version_seq = dpy->request;
+ async_state.error = False;
+ async.next = dpy->async_handlers;
+ async.handler = _XRenderVersionHandler;
+ async.data = (XPointer) &async_state;
+ dpy->async_handlers = &async;
+
+ GetReq (RenderQueryPictFormats, req);
+ req->reqType = info->codes->major_opcode;
+ req->renderReqType = X_RenderQueryPictFormats;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ DeqAsyncHandler (dpy, &async);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+ }
+ DeqAsyncHandler (dpy, &async);
+ if (async_state.error)
+ {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return 0;
+ }
+ /*
+ * Check for the lack of sub-pixel data
+ */
+ if (async_state.major_version == 0 && async_state.minor_version < 6)
+ rep.numSubpixel = 0;
+
+ xri = (XRenderInfo *) Xmalloc (sizeof (XRenderInfo) +
+ rep.numFormats * sizeof (XRenderPictFormat) +
+ rep.numScreens * sizeof (XRenderScreen) +
+ rep.numDepths * sizeof (XRenderDepth) +
+ rep.numVisuals * sizeof (XRenderVisual));
+ xri->major_version = async_state.major_version;
+ xri->minor_version = async_state.minor_version;
+ xri->format = (XRenderPictFormat *) (xri + 1);
+ xri->nformat = rep.numFormats;
+ xri->screen = (XRenderScreen *) (xri->format + rep.numFormats);
+ xri->nscreen = rep.numScreens;
+ xri->depth = (XRenderDepth *) (xri->screen + rep.numScreens);
+ xri->ndepth = rep.numDepths;
+ xri->visual = (XRenderVisual *) (xri->depth + rep.numDepths);
+ xri->nvisual = rep.numVisuals;
+ rlength = (rep.numFormats * sizeof (xPictFormInfo) +
+ rep.numScreens * sizeof (xPictScreen) +
+ rep.numDepths * sizeof (xPictDepth) +
+ rep.numVisuals * sizeof (xPictVisual) +
+ rep.numSubpixel * 4);
+ xData = (void *) Xmalloc (rlength);
+ nbytes = (int) rep.length << 2;
+
+ if (!xri || !xData || nbytes < rlength)
+ {
+ if (xri) Xfree (xri);
+ if (xData) Xfree (xData);
+ _XEatData (dpy, nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+ }
+ _XRead (dpy, (char *) xData, rlength);
+ format = xri->format;
+ xFormat = (xPictFormInfo *) xData;
+ for (nf = 0; nf < rep.numFormats; nf++)
+ {
+ format->id = xFormat->id;
+ format->type = xFormat->type;
+ format->depth = xFormat->depth;
+ format->direct.red = xFormat->direct.red;
+ format->direct.redMask = xFormat->direct.redMask;
+ format->direct.green = xFormat->direct.green;
+ format->direct.greenMask = xFormat->direct.greenMask;
+ format->direct.blue = xFormat->direct.blue;
+ format->direct.blueMask = xFormat->direct.blueMask;
+ format->direct.alpha = xFormat->direct.alpha;
+ format->direct.alphaMask = xFormat->direct.alphaMask;
+ format->colormap = xFormat->colormap;
+ format++;
+ xFormat++;
+ }
+ xScreen = (xPictScreen *) xFormat;
+ screen = xri->screen;
+ depth = xri->depth;
+ visual = xri->visual;
+ for (ns = 0; ns < xri->nscreen; ns++)
+ {
+ screen->depths = depth;
+ screen->ndepths = xScreen->nDepth;
+ screen->fallback = _XRenderFindFormat (xri, xScreen->fallback);
+ screen->subpixel = SubPixelUnknown;
+ xDepth = (xPictDepth *) (xScreen + 1);
+ for (nd = 0; nd < screen->ndepths; nd++)
+ {
+ depth->depth = xDepth->depth;
+ depth->nvisuals = xDepth->nPictVisuals;
+ depth->visuals = visual;
+ xVisual = (xPictVisual *) (xDepth + 1);
+ for (nv = 0; nv < depth->nvisuals; nv++)
+ {
+ visual->visual = _XRenderFindVisual (dpy, xVisual->visual);
+ visual->format = _XRenderFindFormat (xri, xVisual->format);
+ visual++;
+ xVisual++;
+ }
+ depth++;
+ xDepth = (xPictDepth *) xVisual;
+ }
+ screen++;
+ xScreen = (xPictScreen *) xDepth;
+ }
+ xSubpixel = (CARD32 *) xScreen;
+ screen = xri->screen;
+ for (ns = 0; ns < rep.numSubpixel; ns++)
+ {
+ screen->subpixel = *xSubpixel;
+ xSubpixel++;
+ screen++;
+ }
+ info->data = (XPointer) xri;
+ /*
+ * Skip any extra data
+ */
+ if (nbytes > rlength)
+ _XEatData (dpy, (unsigned long) (nbytes - rlength));
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ Xfree (xData);
+ return 1;
+}
+
+int
+XRenderQuerySubpixelOrder (Display *dpy, int screen)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ XRenderInfo *xri;
+
+ if (!XextHasExtension (info))
+ return SubPixelUnknown;
+
+ if (!XRenderQueryFormats (dpy))
+ return SubPixelUnknown;
+
+ xri = (XRenderInfo *) info->data;
+ return xri->screen[screen].subpixel;
+}
+
+Bool
+XRenderSetSubpixelOrder (Display *dpy, int screen, int subpixel)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ XRenderInfo *xri;
+
+ if (!XextHasExtension (info))
+ return False;
+
+ if (!XRenderQueryFormats (dpy))
+ return False;
+
+ xri = (XRenderInfo *) info->data;
+ xri->screen[screen].subpixel = subpixel;
+ return True;
+}
+
+XRenderPictFormat *
+XRenderFindVisualFormat (Display *dpy, _Xconst Visual *visual)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ int nv;
+ XRenderInfo *xri;
+ XRenderVisual *xrv;
+
+ RenderCheckExtension (dpy, info, 0);
+ if (!XRenderQueryFormats (dpy))
+ return 0;
+ xri = (XRenderInfo *) info->data;
+ for (nv = 0, xrv = xri->visual; nv < xri->nvisual; nv++, xrv++)
+ if (xrv->visual == visual)
+ return xrv->format;
+ return 0;
+}
+
+XRenderPictFormat *
+XRenderFindFormat (Display *dpy,
+ unsigned long mask,
+ _Xconst XRenderPictFormat *template,
+ int count)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ int nf;
+ XRenderInfo *xri;
+
+ RenderCheckExtension (dpy, info, 0);
+ if (!XRenderQueryFormats (dpy))
+ return 0;
+ xri = (XRenderInfo *) info->data;
+ for (nf = 0; nf < xri->nformat; nf++)
+ {
+ if (mask & PictFormatID)
+ if (template->id != xri->format[nf].id)
+ continue;
+ if (mask & PictFormatType)
+ if (template->type != xri->format[nf].type)
+ continue;
+ if (mask & PictFormatDepth)
+ if (template->depth != xri->format[nf].depth)
+ continue;
+ if (mask & PictFormatRed)
+ if (template->direct.red != xri->format[nf].direct.red)
+ continue;
+ if (mask & PictFormatRedMask)
+ if (template->direct.redMask != xri->format[nf].direct.redMask)
+ continue;
+ if (mask & PictFormatGreen)
+ if (template->direct.green != xri->format[nf].direct.green)
+ continue;
+ if (mask & PictFormatGreenMask)
+ if (template->direct.greenMask != xri->format[nf].direct.greenMask)
+ continue;
+ if (mask & PictFormatBlue)
+ if (template->direct.blue != xri->format[nf].direct.blue)
+ continue;
+ if (mask & PictFormatBlueMask)
+ if (template->direct.blueMask != xri->format[nf].direct.blueMask)
+ continue;
+ if (mask & PictFormatAlpha)
+ if (template->direct.alpha != xri->format[nf].direct.alpha)
+ continue;
+ if (mask & PictFormatAlphaMask)
+ if (template->direct.alphaMask != xri->format[nf].direct.alphaMask)
+ continue;
+ if (mask & PictFormatColormap)
+ if (template->colormap != xri->format[nf].colormap)
+ continue;
+ if (count-- == 0)
+ return &xri->format[nf];
+ }
+ return 0;
+}
+
+XRenderPictFormat *
+XRenderFindStandardFormat (Display *dpy,
+ int format)
+{
+ static struct {
+ XRenderPictFormat templ;
+ unsigned long mask;
+ } standardFormats[PictStandardNUM] = {
+ /* PictStandardARGB32 */
+ {
+ {
+ 0, /* id */
+ PictTypeDirect, /* type */
+ 32, /* depth */
+ { /* direct */
+ 16, /* direct.red */
+ 0xff, /* direct.redMask */
+ 8, /* direct.green */
+ 0xff, /* direct.greenMask */
+ 0, /* direct.blue */
+ 0xff, /* direct.blueMask */
+ 24, /* direct.alpha */
+ 0xff, /* direct.alphaMask */
+ },
+ 0, /* colormap */
+ },
+ PictFormatType |
+ PictFormatDepth |
+ PictFormatRed |
+ PictFormatRedMask |
+ PictFormatGreen |
+ PictFormatGreenMask |
+ PictFormatBlue |
+ PictFormatBlueMask |
+ PictFormatAlpha |
+ PictFormatAlphaMask,
+ },
+ /* PictStandardRGB24 */
+ {
+ {
+ 0, /* id */
+ PictTypeDirect, /* type */
+ 24, /* depth */
+ { /* direct */
+ 16, /* direct.red */
+ 0xff, /* direct.redMask */
+ 8, /* direct.green */
+ 0xff, /* direct.greenMask */
+ 0, /* direct.blue */
+ 0xff, /* direct.blueMask */
+ 0, /* direct.alpha */
+ 0x00, /* direct.alphaMask */
+ },
+ 0, /* colormap */
+ },
+ PictFormatType |
+ PictFormatDepth |
+ PictFormatRed |
+ PictFormatRedMask |
+ PictFormatGreen |
+ PictFormatGreenMask |
+ PictFormatBlue |
+ PictFormatBlueMask |
+ PictFormatAlphaMask,
+ },
+ /* PictStandardA8 */
+ {
+ {
+ 0, /* id */
+ PictTypeDirect, /* type */
+ 8, /* depth */
+ { /* direct */
+ 0, /* direct.red */
+ 0x00, /* direct.redMask */
+ 0, /* direct.green */
+ 0x00, /* direct.greenMask */
+ 0, /* direct.blue */
+ 0x00, /* direct.blueMask */
+ 0, /* direct.alpha */
+ 0xff, /* direct.alphaMask */
+ },
+ 0, /* colormap */
+ },
+ PictFormatType |
+ PictFormatDepth |
+ PictFormatRedMask |
+ PictFormatGreenMask |
+ PictFormatBlueMask |
+ PictFormatAlpha |
+ PictFormatAlphaMask,
+ },
+ /* PictStandardA4 */
+ {
+ {
+ 0, /* id */
+ PictTypeDirect, /* type */
+ 4, /* depth */
+ { /* direct */
+ 0, /* direct.red */
+ 0x00, /* direct.redMask */
+ 0, /* direct.green */
+ 0x00, /* direct.greenMask */
+ 0, /* direct.blue */
+ 0x00, /* direct.blueMask */
+ 0, /* direct.alpha */
+ 0x0f, /* direct.alphaMask */
+ },
+ 0, /* colormap */
+ },
+ PictFormatType |
+ PictFormatDepth |
+ PictFormatRedMask |
+ PictFormatGreenMask |
+ PictFormatBlueMask |
+ PictFormatAlpha |
+ PictFormatAlphaMask,
+ },
+ /* PictStandardA1 */
+ {
+ {
+ 0, /* id */
+ PictTypeDirect, /* type */
+ 1, /* depth */
+ { /* direct */
+ 0, /* direct.red */
+ 0x00, /* direct.redMask */
+ 0, /* direct.green */
+ 0x00, /* direct.greenMask */
+ 0, /* direct.blue */
+ 0x00, /* direct.blueMask */
+ 0, /* direct.alpha */
+ 0x01, /* direct.alphaMask */
+ },
+ 0, /* colormap */
+ },
+ PictFormatType |
+ PictFormatDepth |
+ PictFormatRedMask |
+ PictFormatGreenMask |
+ PictFormatBlueMask |
+ PictFormatAlpha |
+ PictFormatAlphaMask,
+ },
+ };
+
+ if (0 <= format && format < PictStandardNUM)
+ return XRenderFindFormat (dpy,
+ standardFormats[format].mask,
+ &standardFormats[format].templ,
+ 0);
+ return 0;
+}
+
+XIndexValue *
+XRenderQueryPictIndexValues(Display *dpy,
+ _Xconst XRenderPictFormat *format,
+ int *num)
+{
+ XExtDisplayInfo *info = XRenderFindDisplay (dpy);
+ xRenderQueryPictIndexValuesReq *req;
+ xRenderQueryPictIndexValuesReply rep;
+ XIndexValue *values;
+ int nbytes, nread, rlength, i;
+
+ RenderCheckExtension (dpy, info, 0);
+
+ LockDisplay (dpy);
+ GetReq (RenderQueryPictIndexValues, req);
+ req->reqType = info->codes->major_opcode;
+ req->renderReqType = X_RenderQueryPictIndexValues;
+ req->format = format->id;
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+ }
+
+ /* request data length */
+ nbytes = (long)rep.length << 2;
+ /* bytes of actual data in the request */
+ nread = rep.numIndexValues * SIZEOF (xIndexValue);
+ /* size of array returned to application */
+ rlength = rep.numIndexValues * sizeof (XIndexValue);
+
+ /* allocate returned data */
+ values = (XIndexValue *)Xmalloc (rlength);
+ if (!values)
+ {
+ _XEatData (dpy, nbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 0;
+ }
+
+ /* read the values one at a time and convert */
+ *num = rep.numIndexValues;
+ for(i = 0; i < rep.numIndexValues; i++)
+ {
+ xIndexValue value;
+
+ _XRead (dpy, (char *) &value, SIZEOF (xIndexValue));
+ values[i].pixel = value.pixel;
+ values[i].red = value.red;
+ values[i].green = value.green;
+ values[i].blue = value.blue;
+ values[i].alpha = value.alpha;
+ }
+ /* skip any padding */
+ if(nbytes > nread)
+ {
+ _XEatData (dpy, (unsigned long) (nbytes - nread));
+ }
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return values;
+}
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