Initial revision

1 files changed, 1152 insertions, 0 deletions

diff --git a/src/Xv.c b/src/Xv.c
new file mode 100644
index 0000000..767ecc6
--- /dev/null
+++ b/src/Xv.c
@@ -0,0 +1,1152 @@
+/***********************************************************
+Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts,
+and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+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 names of Digital or MIT not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+******************************************************************/
+/* $XFree86: xc/lib/Xv/Xv.c,v 1.16 2002/10/16 00:37:33 dawes Exp $ */
+/*
+** File: 
+**
+**   Xv.c --- Xv library extension module.
+**
+** Author: 
+**
+**   David Carver (Digital Workstation Engineering/Project Athena)
+**
+** Revisions:
+**
+**   26.06.91 Carver
+**     - changed XvFreeAdaptors to XvFreeAdaptorInfo
+**     - changed XvFreeEncodings to XvFreeEncodingInfo
+**
+**   11.06.91 Carver
+**     - changed SetPortControl to SetPortAttribute
+**     - changed GetPortControl to GetPortAttribute
+**     - changed QueryBestSize
+**
+**   15.05.91 Carver
+**     - version 2.0 upgrade
+**
+**   240.01.91 Carver
+**     - version 1.4 upgrade
+**
+*/
+
+#include <stdio.h>
+#include "Xvlibint.h"
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/XShm.h>
+
+static XExtensionInfo _xv_info_data;
+static XExtensionInfo *xv_info = &_xv_info_data;
+static char *xv_extension_name = XvName;
+
+#define XvCheckExtension(dpy, i, val) \
+  XextCheckExtension(dpy, i, xv_extension_name, val)
+
+static char *xv_error_string();
+static int xv_close_display();
+static Bool xv_wire_to_event();
+
+static XExtensionHooks xv_extension_hooks = {
+    NULL,                               /* create_gc */
+    NULL,                               /* copy_gc */
+    NULL,                               /* flush_gc */
+    NULL,                               /* free_gc */
+    NULL,                               /* create_font */
+    NULL,                               /* free_font */
+    xv_close_display,                   /* close_display */
+    xv_wire_to_event,                   /* wire_to_event */
+    NULL,                               /* event_to_wire */
+    NULL,                               /* error */
+    xv_error_string                     /* error_string */
+};
+
+
+static char *xv_error_list[] = 
+{
+   "BadPort",	    /* XvBadPort     */
+   "BadEncoding",   /* XvBadEncoding */
+   "BadControl"     /* XvBadControl  */
+};
+
+static XEXT_GENERATE_CLOSE_DISPLAY (xv_close_display, xv_info)
+
+
+static XEXT_GENERATE_FIND_DISPLAY (xv_find_display, xv_info, 
+                                   xv_extension_name, 
+                                   &xv_extension_hooks,
+				   XvNumEvents, NULL)
+     
+
+static XEXT_GENERATE_ERROR_STRING (xv_error_string, xv_extension_name,
+                                   XvNumErrors, xv_error_list)
+
+
+int
+XvQueryExtension(
+     Display *dpy,
+     unsigned int *p_version,
+     unsigned int *p_revision,
+     unsigned int *p_requestBase,
+     unsigned int *p_eventBase,
+     unsigned int *p_errorBase
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvQueryExtensionReq *req;
+  xvQueryExtensionReply rep;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(QueryExtension, req);
+
+  if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+     UnlockDisplay(dpy);
+     SyncHandle();
+     return XvBadExtension;
+  }
+
+  *p_version = rep.version;
+  *p_revision = rep.revision;
+  *p_requestBase = info->codes->major_opcode;
+  *p_eventBase = info->codes->first_event;
+  *p_errorBase = info->codes->first_error;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvQueryAdaptors(
+     Display *dpy,
+     Window window,
+     unsigned int *p_nAdaptors,
+     XvAdaptorInfo **p_pAdaptors
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvQueryAdaptorsReq *req;
+  xvQueryAdaptorsReply rep;
+  int size,ii,jj;
+  char *name;
+  XvAdaptorInfo *pas, *pa;
+  XvFormat *pfs, *pf;
+  char *buffer;
+  union 
+    {
+      char *buffer;
+      char *string;
+      xvAdaptorInfo *pa;
+      xvFormat *pf;
+    } u;
+  
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(QueryAdaptors, req);
+  req->window = window;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadReply);
+  }
+
+  size = rep.length << 2;
+  if ( (buffer = (char *)Xmalloc ((unsigned) size)) == NULL) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadAlloc);
+  }
+  _XRead (dpy, buffer, size);
+
+  u.buffer = buffer;
+
+  /* GET INPUT ADAPTORS */
+
+  if (rep.num_adaptors == 0) {
+      pas = NULL;
+  } else {
+      size = rep.num_adaptors*sizeof(XvAdaptorInfo);
+      if ((pas=(XvAdaptorInfo *)Xmalloc(size))==NULL) {
+          Xfree(buffer);
+          UnlockDisplay(dpy);
+          SyncHandle();
+          return(XvBadAlloc);
+      }
+  }
+
+  /* INIT ADAPTOR FIELDS */
+
+  pa = pas;
+  for (ii=0; ii<rep.num_adaptors; ii++) {
+      pa->num_adaptors = 0;
+      pa->name = (char *)NULL;
+      pa->formats = (XvFormat *)NULL;
+      pa++;
+  }
+
+  pa = pas;
+  for (ii=0; ii<rep.num_adaptors; ii++) {
+      pa->type = u.pa->type;
+      pa->base_id = u.pa->base_id;
+      pa->num_ports = u.pa->num_ports;
+      pa->num_formats = u.pa->num_formats;
+      pa->num_adaptors = rep.num_adaptors - ii;
+
+      /* GET ADAPTOR NAME */
+
+      size = u.pa->name_size;
+      u.buffer += (sz_xvAdaptorInfo + 3) & ~3;
+
+      if ( (name = (char *)Xmalloc(size+1)) == NULL)
+	{
+	  XvFreeAdaptorInfo(pas);
+	  Xfree(buffer);
+          UnlockDisplay(dpy);
+          SyncHandle();
+	  return(XvBadAlloc);
+	}
+      (void)strncpy(name, u.string, size);
+      name[size] = '\0';
+      pa->name = name;
+
+      u.buffer += (size + 3) & ~3;
+
+      /* GET FORMATS */
+
+      size = pa->num_formats*sizeof(XvFormat);
+      if ((pfs=(XvFormat *)Xmalloc(size))==NULL) {
+	  XvFreeAdaptorInfo(pas);
+	  Xfree(buffer);
+          UnlockDisplay(dpy);
+          SyncHandle();
+	  return(XvBadAlloc);
+      }
+
+      pf = pfs;
+      for (jj=0; jj<pa->num_formats; jj++) {
+	  pf->depth = u.pf->depth;
+	  pf->visual_id = u.pf->visual;
+	  pf++;
+	  
+	  u.buffer += (sz_xvFormat + 3) & ~3;
+      }
+
+      pa->formats = pfs;
+
+      pa++;
+
+  }
+
+  *p_nAdaptors = rep.num_adaptors;
+  *p_pAdaptors = pas;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return (Success);
+}
+
+
+void
+XvFreeAdaptorInfo(XvAdaptorInfo *pAdaptors)
+{
+
+  XvAdaptorInfo *pa;
+  int ii;
+
+  if (!pAdaptors) return;
+
+  pa = pAdaptors;
+
+  for (ii=0; ii<pAdaptors->num_adaptors; ii++, pa++)
+    {
+      if (pa->name)
+	{
+	  Xfree(pa->name);
+	}
+      if (pa->formats)
+	{
+	  Xfree(pa->formats);
+	}
+    } 
+
+  Xfree(pAdaptors);
+}
+
+int
+XvQueryEncodings(
+     Display *dpy,
+     XvPortID port,
+     unsigned int *p_nEncodings,
+     XvEncodingInfo **p_pEncodings
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvQueryEncodingsReq *req;
+  xvQueryEncodingsReply rep;
+  int size, jj;
+  char *name;
+  XvEncodingInfo *pes, *pe;
+  char *buffer;
+  union 
+    {
+      char *buffer;
+      char *string;
+      xvEncodingInfo *pe;
+    } u;
+  
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(QueryEncodings, req);
+  req->port = port;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadReply);
+  }
+
+  size = rep.length << 2;
+  if ( (buffer = (char *)Xmalloc ((unsigned) size)) == NULL) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadAlloc);
+  }
+  _XRead (dpy, buffer, size);
+
+  u.buffer = buffer;
+
+  /* GET ENCODINGS */
+
+  size = rep.num_encodings*sizeof(XvEncodingInfo);
+  if ( (pes = (XvEncodingInfo *)Xmalloc(size)) == NULL) {
+      Xfree(buffer);
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadAlloc);
+  }
+
+  /* INITIALIZE THE ENCODING POINTER */
+
+  pe = pes;
+  for (jj=0; jj<rep.num_encodings; jj++) {
+      pe->name = (char *)NULL;
+      pe->num_encodings = 0;
+      pe++;
+  }
+
+  pe = pes;
+  for (jj=0; jj<rep.num_encodings; jj++) {
+      pe->encoding_id = u.pe->encoding;
+      pe->width = u.pe->width;
+      pe->height = u.pe->height;
+      pe->rate.numerator = u.pe->rate.numerator;
+      pe->rate.denominator = u.pe->rate.denominator;
+      pe->num_encodings = rep.num_encodings - jj;
+
+      size = u.pe->name_size;
+      u.buffer += (sz_xvEncodingInfo + 3) & ~3;
+
+      if ( (name = (char *)Xmalloc(size+1)) == NULL) {
+	  Xfree(buffer);
+          UnlockDisplay(dpy);
+          SyncHandle();
+	  return(XvBadAlloc);
+      }
+      strncpy(name, u.string, size);
+      name[size] = '\0';
+      pe->name = name;
+      pe++;
+
+      u.buffer += (size + 3) & ~3;
+  }
+
+  *p_nEncodings = rep.num_encodings;
+  *p_pEncodings = pes;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return (Success);
+}
+
+void
+XvFreeEncodingInfo(XvEncodingInfo *pEncodings)
+{
+
+  XvEncodingInfo *pe;
+  int ii;
+
+  if (!pEncodings) return;
+
+  pe = pEncodings;
+
+  for (ii=0; ii<pEncodings->num_encodings; ii++, pe++) {
+      if (pe->name) Xfree(pe->name);
+  }
+
+  Xfree(pEncodings);
+}
+
+int
+XvPutVideo(
+     Display *dpy,
+     XvPortID port,
+     Drawable d,
+     GC gc,
+     int vx, int vy, 
+     unsigned int vw, unsigned int vh,
+     int dx, int dy,
+     unsigned int dw, unsigned int dh
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvPutVideoReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+  
+  FlushGC(dpy, gc);
+
+  XvGetReq(PutVideo, req);
+
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->vid_x = vx;
+  req->vid_y = vy;
+  req->vid_w = vw;
+  req->vid_h = vh;
+  req->drw_x = dx;
+  req->drw_y = dy;
+  req->drw_w = dw;
+  req->drw_h = dh;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvPutStill(
+     Display *dpy,
+     XvPortID port,
+     Drawable d,
+     GC gc,
+     int vx, int vy, 
+     unsigned int vw, unsigned int vh,
+     int dx, int dy,
+     unsigned int dw, unsigned int dh
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvPutStillReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  FlushGC(dpy, gc);
+
+  XvGetReq(PutStill, req);
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->vid_x = vx;
+  req->vid_y = vy;
+  req->vid_w = vw;
+  req->vid_h = vh;
+  req->drw_x = dx;
+  req->drw_y = dy;
+  req->drw_w = dw;
+  req->drw_h = dh;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvGetVideo(
+     Display *dpy,
+     XvPortID port,
+     Drawable d,
+     GC gc,
+     int vx, int vy, 
+     unsigned int vw, unsigned int vh,
+     int dx, int dy,
+     unsigned int dw, unsigned int dh
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvGetVideoReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  FlushGC(dpy, gc);
+
+  XvGetReq(GetVideo, req);
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->vid_x = vx;
+  req->vid_y = vy;
+  req->vid_w = vw;
+  req->vid_h = vh;
+  req->drw_x = dx;
+  req->drw_y = dy;
+  req->drw_w = dw;
+  req->drw_h = dh;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvGetStill(
+     Display *dpy,
+     XvPortID port,
+     Drawable d,
+     GC gc,
+     int vx, int vy, 
+     unsigned int vw, unsigned int vh,
+     int dx, int dy,
+     unsigned int dw, unsigned int dh
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvGetStillReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  FlushGC(dpy, gc);
+
+  XvGetReq(GetStill, req);
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->vid_x = vx;
+  req->vid_y = vy;
+  req->vid_w = vw;
+  req->vid_h = vh;
+  req->drw_x = dx;
+  req->drw_y = dy;
+  req->drw_w = dw;
+  req->drw_h = dh;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvStopVideo(
+     Display *dpy,
+     XvPortID port,
+     Drawable draw
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvStopVideoReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(StopVideo, req);
+  req->port = port;
+  req->drawable = draw;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvGrabPort(
+     Display *dpy,
+     XvPortID port,
+     Time time
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  int result;
+  xvGrabPortReply rep;
+  xvGrabPortReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(GrabPort, req);
+  req->port = port;
+  req->time = time;
+
+  if (_XReply (dpy, (xReply *) &rep, 0, xTrue) == 0) 
+    rep.result = GrabSuccess;
+
+  result = rep.result;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return result;
+}
+
+int
+XvUngrabPort(
+     Display *dpy,
+     XvPortID port,
+     Time time
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvUngrabPortReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(UngrabPort, req);
+  req->port = port;
+  req->time = time;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvSelectVideoNotify(
+     Display *dpy,
+     Drawable drawable,
+     Bool onoff
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvSelectVideoNotifyReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(SelectVideoNotify, req);
+  req->drawable = drawable;
+  req->onoff = onoff;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvSelectPortNotify(
+     Display *dpy,
+     XvPortID port,
+     Bool onoff
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvSelectPortNotifyReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(SelectPortNotify, req);
+  req->port = port;
+  req->onoff = onoff;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int
+XvSetPortAttribute (
+     Display *dpy,
+     XvPortID port,
+     Atom attribute,
+     int value
+)
+{
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvSetPortAttributeReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(SetPortAttribute, req);
+  req->port = port;
+  req->attribute = attribute;
+  req->value = value;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return (Success);
+}
+
+int
+XvGetPortAttribute (
+     Display *dpy,
+     XvPortID port,
+     Atom attribute,
+     int *p_value
+)
+{
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvGetPortAttributeReq *req;
+  xvGetPortAttributeReply rep;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(GetPortAttribute, req);
+  req->port = port;
+  req->attribute = attribute;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadReply);
+  }
+
+  *p_value = rep.value;
+  
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return (Success);
+}
+
+int
+XvQueryBestSize(
+     Display *dpy,
+     XvPortID port,
+     Bool motion,
+     unsigned int vid_w, 
+     unsigned int vid_h,
+     unsigned int drw_w, 
+     unsigned int drw_h,
+     unsigned int *p_actual_width, 
+     unsigned int *p_actual_height
+)
+{
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvQueryBestSizeReq *req;
+  xvQueryBestSizeReply rep;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  XvGetReq(QueryBestSize, req);
+  req->port = port;
+  req->motion = motion;
+  req->vid_w = vid_w;
+  req->vid_h = vid_h;
+  req->drw_w = drw_w;
+  req->drw_h = drw_h;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return(XvBadReply);
+  }
+
+  *p_actual_width = rep.actual_width;
+  *p_actual_height = rep.actual_height;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return (Success);
+}
+
+
+XvAttribute* 
+XvQueryPortAttributes(Display *dpy, XvPortID port, int *num)
+{
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvQueryPortAttributesReq *req;
+  xvQueryPortAttributesReply rep;
+  XvAttribute *ret = NULL;
+
+  *num = 0;
+
+  XvCheckExtension(dpy, info, NULL);
+
+  LockDisplay(dpy);
+
+  XvGetReq(QueryPortAttributes, req);
+  req->port = port;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return ret;
+  }
+
+  if(rep.num_attributes) {
+      int size = (rep.num_attributes * sizeof(XvAttribute)) + rep.text_size;
+
+      if((ret = Xmalloc(size))) {
+	  char* marker = (char*)(&ret[rep.num_attributes]);
+	  xvAttributeInfo Info;
+	  int i;
+	
+	  for(i = 0; i < rep.num_attributes; i++) {
+             _XRead(dpy, (char*)(&Info), sz_xvAttributeInfo);
+	      ret[i].flags = (int)Info.flags;	      
+	      ret[i].min_value = Info.min;	      
+	      ret[i].max_value = Info.max;	      
+	      ret[i].name = marker;
+	      _XRead(dpy, marker, Info.size);
+	      marker += Info.size;
+	      (*num)++;
+	  }
+      } else
+	_XEatData(dpy, rep.length << 2);
+  }
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return ret;
+}
+
+XvImageFormatValues * XvListImageFormats (
+   Display 	*dpy,
+   XvPortID 	port,
+   int 		*num
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvListImageFormatsReq *req;
+  xvListImageFormatsReply rep;
+  XvImageFormatValues *ret = NULL;
+
+  *num = 0;
+
+  XvCheckExtension(dpy, info, NULL);
+
+  LockDisplay(dpy);
+
+  XvGetReq(ListImageFormats, req);
+  req->port = port;
+
+  /* READ THE REPLY */
+
+  if (_XReply(dpy, (xReply *)&rep, 0, xFalse) == 0) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return NULL;
+  }
+
+  if(rep.num_formats) {
+      int size = (rep.num_formats * sizeof(XvImageFormatValues));
+
+      if((ret = Xmalloc(size))) {
+	  xvImageFormatInfo Info;
+	  int i;
+	
+	  for(i = 0; i < rep.num_formats; i++) {
+              _XRead(dpy, (char*)(&Info), sz_xvImageFormatInfo);
+	      ret[i].id = Info.id;	      
+	      ret[i].type = Info.type;	      
+	      ret[i].byte_order = Info.byte_order;	      
+	      memcpy(&(ret[i].guid[0]), &(Info.guid[0]), 16);
+	      ret[i].bits_per_pixel = Info.bpp;	      
+  	      ret[i].format = Info.format;	      
+   	      ret[i].num_planes = Info.num_planes;	      
+    	      ret[i].depth = Info.depth;	      
+    	      ret[i].red_mask = Info.red_mask;	      
+    	      ret[i].green_mask = Info.green_mask;	      
+    	      ret[i].blue_mask = Info.blue_mask;	      
+    	      ret[i].y_sample_bits = Info.y_sample_bits;	      
+    	      ret[i].u_sample_bits = Info.u_sample_bits;	      
+    	      ret[i].v_sample_bits = Info.v_sample_bits;
+    	      ret[i].horz_y_period = Info.horz_y_period;
+    	      ret[i].horz_u_period = Info.horz_u_period;
+    	      ret[i].horz_v_period = Info.horz_v_period;
+    	      ret[i].vert_y_period = Info.vert_y_period;
+    	      ret[i].vert_u_period = Info.vert_u_period;
+    	      ret[i].vert_v_period = Info.vert_v_period;
+	      memcpy(&(ret[i].component_order[0]), &(Info.comp_order[0]), 32);
+    	      ret[i].scanline_order = Info.scanline_order;
+	      (*num)++;
+	  }
+      } else
+	_XEatData(dpy, rep.length << 2);
+  }
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return ret;
+}
+
+XvImage * XvCreateImage (
+   Display *dpy,
+   XvPortID port,
+   int id,
+   char *data,
+   int width, 
+   int height 
+) {
+   XExtDisplayInfo *info = xv_find_display(dpy);
+   xvQueryImageAttributesReq *req;
+   xvQueryImageAttributesReply rep;
+   XvImage *ret = NULL;
+
+   XvCheckExtension(dpy, info, NULL);
+
+   LockDisplay(dpy);
+
+   XvGetReq(QueryImageAttributes, req);
+   req->id = id;
+   req->port = port;
+   req->width = width;
+   req->height = height;
+
+   /* READ THE REPLY */
+
+   if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+       UnlockDisplay(dpy);
+       SyncHandle();
+      return NULL;
+   }
+
+   if((ret = (XvImage*)Xmalloc(sizeof(XvImage) + (rep.num_planes << 3)))) {
+	ret->id = id;
+	ret->width = rep.width;
+	ret->height = rep.height;
+	ret->data_size = rep.data_size;
+	ret->num_planes = rep.num_planes;
+	ret->pitches = (int*)(&ret[1]);
+	ret->offsets = ret->pitches + rep.num_planes;
+	ret->data = data;
+	ret->obdata = NULL;
+  	_XRead(dpy, (char*)(ret->pitches), rep.num_planes << 2);
+	_XRead(dpy, (char*)(ret->offsets), rep.num_planes << 2);
+   } else
+	_XEatData(dpy, rep.length << 2);
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+   return ret;
+}
+
+XvImage * XvShmCreateImage (
+   Display *dpy,
+   XvPortID port,
+   int id,
+   char *data,
+   int width, 
+   int height,
+   XShmSegmentInfo *shminfo
+){
+   XvImage *ret;
+
+   ret = XvCreateImage(dpy, port, id, data, width, height);
+
+   if(ret) ret->obdata = (XPointer)shminfo;
+
+   return ret;
+}
+
+int XvPutImage (
+   Display *dpy,
+   XvPortID port,
+   Drawable d,
+   GC gc,
+   XvImage *image,
+   int src_x,
+   int src_y,
+   unsigned int src_w,
+   unsigned int src_h,
+   int dest_x, 
+   int dest_y,
+   unsigned int dest_w,
+   unsigned int dest_h
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  xvPutImageReq *req;
+  int len;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+
+  FlushGC(dpy, gc);
+
+  XvGetReq(PutImage, req);
+
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->id = image->id;
+  req->src_x = src_x;
+  req->src_y = src_y;
+  req->src_w = src_w;
+  req->src_h = src_h;
+  req->drw_x = dest_x;
+  req->drw_y = dest_y;
+  req->drw_w = dest_w;
+  req->drw_h = dest_h;
+  req->width = image->width;
+  req->height = image->height;
+
+  len = (image->data_size + 3) >> 2;
+  SetReqLen(req, len, len);
+
+  /* Yes it's kindof lame that we are sending the whole thing,
+     but for video all of it may be needed even if displaying
+     only a subsection, and I don't want to go through the 
+     trouble of creating subregions to send */
+  Data(dpy, (char *)image->data, image->data_size);
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+int XvShmPutImage (
+   Display *dpy,
+   XvPortID port,
+   Drawable d,
+   GC gc,
+   XvImage *image,
+   int src_x,
+   int src_y,
+   unsigned int src_w,
+   unsigned int src_h,
+   int dest_x, 
+   int dest_y,
+   unsigned int dest_w,
+   unsigned int dest_h,
+   Bool send_event
+){
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  XShmSegmentInfo *shminfo = (XShmSegmentInfo *)image->obdata;
+  xvShmPutImageReq *req;
+
+  XvCheckExtension(dpy, info, XvBadExtension);
+
+  LockDisplay(dpy);
+  
+  FlushGC(dpy, gc);
+
+  XvGetReq(ShmPutImage, req);
+
+  req->port = port;
+  req->drawable = d;
+  req->gc = gc->gid;
+  req->shmseg = shminfo->shmseg;
+  req->id = image->id;
+  req->src_x = src_x;
+  req->src_y = src_y;
+  req->src_w = src_w;
+  req->src_h = src_h;
+  req->drw_x = dest_x;
+  req->drw_y = dest_y;
+  req->drw_w = dest_w;
+  req->drw_h = dest_h;
+  req->offset = image->data - shminfo->shmaddr;
+  req->width = image->width;
+  req->height = image->height;
+  req->send_event = send_event;
+
+  UnlockDisplay(dpy);
+  SyncHandle();
+
+  return Success;
+}
+
+
+static Bool
+xv_wire_to_event(Display *dpy, XEvent *host, xEvent *wire)
+{
+  XExtDisplayInfo *info = xv_find_display(dpy);
+  XvEvent *re    = (XvEvent *)host;
+  xvEvent *event = (xvEvent *)wire;
+
+  XvCheckExtension(dpy, info, False);
+
+  switch((event->u.u.type & 0x7F) - info->codes->first_event)
+  {
+    case XvVideoNotify:
+      re->xvvideo.type = event->u.u.type & 0x7f;
+      re->xvvideo.serial = 
+	_XSetLastRequestRead(dpy, (xGenericReply *)event);
+      re->xvvideo.send_event = ((event->u.u.type & 0x80) != 0);
+      re->xvvideo.display = dpy;
+      re->xvvideo.time = event->u.videoNotify.time;
+      re->xvvideo.reason = event->u.videoNotify.reason;
+      re->xvvideo.drawable = event->u.videoNotify.drawable;
+      re->xvvideo.port_id = event->u.videoNotify.port;
+      break;
+    case XvPortNotify:
+      re->xvport.type = event->u.u.type & 0x7f;
+      re->xvport.serial = 
+	_XSetLastRequestRead(dpy, (xGenericReply *)event);
+      re->xvport.send_event = ((event->u.u.type & 0x80) != 0);
+      re->xvport.display = dpy;
+      re->xvport.time = event->u.portNotify.time;
+      re->xvport.port_id = event->u.portNotify.port;
+      re->xvport.attribute = event->u.portNotify.attribute;
+      re->xvport.value = event->u.portNotify.value;
+      break;
+    default:
+      return False; 
+  }
+
+  return (True);
+}
+
+