Merge branch 'present' of github.com:CendioOssman/tigervnc

8 files changed, 208 insertions, 21 deletions

diff --git a/unix/xserver/hw/vnc/Makefile.am b/unix/xserver/hw/vnc/Makefile.am
index 1e985966..40eba4f2 100644
--- a/unix/xserver/hw/vnc/Makefile.am
+++ b/unix/xserver/hw/vnc/Makefile.am
@@ -11,12 +11,12 @@ COMMON_LIBS=$(NETWORK_LIB) $(RFB_LIB) $(RDR_LIB) $(OS_LIB) $(UNIXCOMMON_LIB)
 noinst_LTLIBRARIES = libvnccommon.la
 
 HDRS = vncExtInit.h vncHooks.h \
-	vncBlockHandler.h vncSelection.h \
+	vncBlockHandler.h vncPresent.h vncSelection.h \
 	XorgGlue.h XserverDesktop.h xorg-version.h \
 	vncInput.h RFBGlue.h
 
 libvnccommon_la_SOURCES = $(HDRS) \
-	vncExt.c vncExtInit.cc vncHooks.c vncSelection.c \
+	vncExt.c vncExtInit.cc vncHooks.c vncPresent.c vncSelection.c \
 	vncBlockHandler.c XorgGlue.c RandrGlue.c RFBGlue.cc XserverDesktop.cc \
 	vncInput.c vncInputXKB.c qnum_to_xorgevdev.c qnum_to_xorgkbd.c
 
diff --git a/unix/xserver/hw/vnc/XserverDesktop.cc b/unix/xserver/hw/vnc/XserverDesktop.cc
index 4cf37937..d4ee16b8 100644
--- a/unix/xserver/hw/vnc/XserverDesktop.cc
+++ b/unix/xserver/hw/vnc/XserverDesktop.cc
@@ -1,5 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
- * Copyright 2009-2019 Pierre Ossman for Cendio AB
+ * Copyright 2009-2024 Pierre Ossman for Cendio AB
  * Copyright 2014 Brian P. Hinz
  * 
  * This is free software; you can redistribute it and/or modify
@@ -54,6 +54,7 @@
 
 extern "C" {
 void vncSetGlueContext(int screenIndex);
+void vncPresentMscEvent(uint64_t id, uint64_t msc);
 }
 
 using namespace rfb;
@@ -145,15 +146,26 @@ void XserverDesktop::refreshScreenLayout()
   server->setScreenLayout(::computeScreenLayout(&outputIdMap));
 }
 
-void XserverDesktop::start(rfb::VNCServer* vs)
+uint64_t XserverDesktop::getMsc()
 {
-  // We already own the server object, and we always keep it in a
-  // ready state
-  assert(vs == server);
+  return server->getMsc();
+}
+
+void XserverDesktop::queueMsc(uint64_t id, uint64_t msc)
+{
+  pendingMsc[id] = msc;
+  server->queueMsc(msc);
 }
 
-void XserverDesktop::stop()
+void XserverDesktop::abortMsc(uint64_t id)
 {
+  pendingMsc.erase(id);
+}
+
+void XserverDesktop::init(rfb::VNCServer* vs)
+{
+  // We already own the server object, and we always keep it in a
+  // ready state
 }
 
 void XserverDesktop::queryConnection(network::Socket* sock,
@@ -395,7 +407,7 @@ void XserverDesktop::blockHandler(int* timeout)
 
     // Trigger timers and check when the next will expire
     int nextTimeout = Timer::checkTimeouts();
-    if (nextTimeout > 0 && (*timeout == -1 || nextTimeout < *timeout))
+    if (nextTimeout >= 0 && (*timeout == -1 || nextTimeout < *timeout))
       *timeout = nextTimeout;
   } catch (rdr::Exception& e) {
     vlog.error("XserverDesktop::blockHandler: %s",e.str());
@@ -476,6 +488,22 @@ unsigned int XserverDesktop::setScreenLayout(int fb_width, int fb_height,
   return result;
 }
 
+void XserverDesktop::frameTick(uint64_t msc)
+{
+  std::map<uint64_t, uint64_t>::iterator iter, next;
+
+  for (iter = pendingMsc.begin(); iter != pendingMsc.end();) {
+    next = iter; next++;
+
+    if (iter->second <= msc) {
+      pendingMsc.erase(iter->first);
+      vncPresentMscEvent(iter->first, msc);
+    }
+
+    iter = next;
+  }
+}
+
 void XserverDesktop::handleClipboardRequest()
 {
   vncHandleClipboardRequest();
@@ -518,13 +546,11 @@ void XserverDesktop::keyEvent(uint32_t keysym, uint32_t keycode, bool down)
   vncKeyboardEvent(keysym, keycode, down);
 }
 
-bool XserverDesktop::handleTimeout(Timer* t)
+void XserverDesktop::handleTimeout(Timer* t)
 {
   if (t == &queryConnectTimer) {
     server->approveConnection(queryConnectSocket, false,
                               "The attempt to prompt the user to "
                               "accept the connection failed");
   }
-
-  return false;
 }
diff --git a/unix/xserver/hw/vnc/XserverDesktop.h b/unix/xserver/hw/vnc/XserverDesktop.h
index 9cc5bf79..e604295b 100644
--- a/unix/xserver/hw/vnc/XserverDesktop.h
+++ b/unix/xserver/hw/vnc/XserverDesktop.h
@@ -1,5 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
- * Copyright 2009-2019 Pierre Ossman for Cendio AB
+ * Copyright 2009-2024 Pierre Ossman for Cendio AB
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -59,6 +59,9 @@ public:
   void unblockUpdates();
   void setFramebuffer(int w, int h, void* fbptr, int stride);
   void refreshScreenLayout();
+  uint64_t getMsc();
+  void queueMsc(uint64_t id, uint64_t msc);
+  void abortMsc(uint64_t id);
   void requestClipboard();
   void announceClipboard(bool available);
   void sendClipboardData(const char* data);
@@ -88,8 +91,7 @@ public:
                          const char* rejectMsg=0);
 
   // rfb::SDesktop callbacks
-  virtual void start(rfb::VNCServer* vs);
-  virtual void stop();
+  virtual void init(rfb::VNCServer* vs);
   virtual void terminate();
   virtual void queryConnection(network::Socket* sock,
                                const char* userName);
@@ -97,6 +99,7 @@ public:
   virtual void keyEvent(uint32_t keysym, uint32_t keycode, bool down);
   virtual unsigned int setScreenLayout(int fb_width, int fb_height,
                                        const rfb::ScreenSet& layout);
+  virtual void frameTick(uint64_t msc);
   virtual void handleClipboardRequest();
   virtual void handleClipboardAnnounce(bool available);
   virtual void handleClipboardData(const char* data);
@@ -112,7 +115,7 @@ protected:
                          rfb::VNCServer* sockserv,
                          bool read, bool write);
 
-  virtual bool handleTimeout(rfb::Timer* t);
+  virtual void handleTimeout(rfb::Timer* t);
 
 private:
 
@@ -129,6 +132,8 @@ private:
 
   OutputIdMap outputIdMap;
 
+  std::map<uint64_t, uint64_t> pendingMsc;
+
   rfb::Point oldCursorPos;
 };
 #endif
diff --git a/unix/xserver/hw/vnc/vncExtInit.cc b/unix/xserver/hw/vnc/vncExtInit.cc
index b260e626..4003e768 100644
--- a/unix/xserver/hw/vnc/vncExtInit.cc
+++ b/unix/xserver/hw/vnc/vncExtInit.cc
@@ -1,5 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
- * Copyright 2011-2019 Pierre Ossman for Cendio AB
+ * Copyright 2011-2024 Pierre Ossman for Cendio AB
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -484,6 +484,33 @@ void vncRefreshScreenLayout(int scrIdx)
   }
 }
 
+uint64_t vncGetMsc(int scrIdx)
+{
+  try {
+    return desktop[scrIdx]->getMsc();
+  } catch (rdr::Exception& e) {
+    vncFatalError("vncGetMsc: %s\n", e.str());
+  }
+}
+
+void vncQueueMsc(int scrIdx, uint64_t id, uint64_t msc)
+{
+  try {
+    desktop[scrIdx]->queueMsc(id, msc);
+  } catch (rdr::Exception& e) {
+    vncFatalError("vncQueueMsc: %s\n", e.str());
+  }
+}
+
+void vncAbortMsc(int scrIdx, uint64_t id)
+{
+  try {
+    desktop[scrIdx]->abortMsc(id);
+  } catch (rdr::Exception& e) {
+    vncFatalError("vncAbortMsc: %s\n", e.str());
+  }
+}
+
 int vncOverrideParam(const char *nameAndValue)
 {
   const char* equalSign = strchr(nameAndValue, '=');
diff --git a/unix/xserver/hw/vnc/vncExtInit.h b/unix/xserver/hw/vnc/vncExtInit.h
index 333e32a9..6b37fe62 100644
--- a/unix/xserver/hw/vnc/vncExtInit.h
+++ b/unix/xserver/hw/vnc/vncExtInit.h
@@ -1,5 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
- * Copyright 2011-2019 Pierre Ossman for Cendio AB
+ * Copyright 2011-2024 Pierre Ossman for Cendio AB
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -87,6 +87,10 @@ void vncPreScreenResize(int scrIdx);
 void vncPostScreenResize(int scrIdx, int success, int width, int height);
 void vncRefreshScreenLayout(int scrIdx);
 
+uint64_t vncGetMsc(int scrIdx);
+void vncQueueMsc(int scrIdx, uint64_t id, uint64_t msc);
+void vncAbortMsc(int scrIdx, uint64_t id);
+
 int vncOverrideParam(const char *nameAndValue);
 
 #ifdef __cplusplus
diff --git a/unix/xserver/hw/vnc/vncPresent.c b/unix/xserver/hw/vnc/vncPresent.c
new file mode 100644
index 00000000..89dcc1d0
--- /dev/null
+++ b/unix/xserver/hw/vnc/vncPresent.c
@@ -0,0 +1,93 @@
+/* Copyright 2024 Pierre Ossman for Cendio AB
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "vncExtInit.h"
+#include "vncPresent.h"
+
+#include <present.h>
+
+static RRCrtcPtr vncPresentGetCrtc(WindowPtr window)
+{
+  ScreenPtr pScreen = window->drawable.pScreen;
+  rrScrPrivPtr rp = rrGetScrPriv(pScreen);
+
+  /* All output is synchronized, so just pick the first active crtc */
+  for (int c = 0; c < rp->numCrtcs; c++) {
+    RRCrtcPtr crtc;
+
+    crtc = rp->crtcs[c];
+    if (crtc->mode == NULL)
+      continue;
+
+    return crtc;
+  }
+
+  return NULL;
+}
+
+static int vncPresentGetUstMsc(RRCrtcPtr crtc, CARD64 *ust, CARD64 *msc)
+{
+  *ust = GetTimeInMicros();
+  *msc = vncGetMsc(crtc->pScreen->myNum);
+
+  return Success;
+}
+
+static int vncPresentQueueVBlank(RRCrtcPtr crtc, uint64_t event_id,
+                                 uint64_t msc)
+{
+  vncQueueMsc(crtc->pScreen->myNum, event_id, msc);
+  return Success;
+}
+
+void vncPresentMscEvent(uint64_t id, uint64_t msc)
+{
+  present_event_notify(id, GetTimeInMicros(), msc);
+}
+
+static void vncPresentAbortVBlank(RRCrtcPtr crtc, uint64_t event_id,
+                                  uint64_t msc)
+{
+  vncAbortMsc(crtc->pScreen->myNum, event_id);
+}
+
+static void vncPresentFlush(WindowPtr window)
+{
+}
+
+static present_screen_info_rec vncPresentScreenInfo = {
+  .version = PRESENT_SCREEN_INFO_VERSION,
+
+  .get_crtc = vncPresentGetCrtc,
+  .get_ust_msc = vncPresentGetUstMsc,
+  .queue_vblank = vncPresentQueueVBlank,
+  .abort_vblank = vncPresentAbortVBlank,
+  .flush = vncPresentFlush,
+
+  .capabilities = PresentCapabilityNone,
+};
+
+Bool
+vncPresentInit(ScreenPtr screen)
+{
+  return present_screen_init(screen, &vncPresentScreenInfo);
+}
\ No newline at end of file
diff --git a/unix/xserver/hw/vnc/vncPresent.h b/unix/xserver/hw/vnc/vncPresent.h
new file mode 100644
index 00000000..17407402
--- /dev/null
+++ b/unix/xserver/hw/vnc/vncPresent.h
@@ -0,0 +1,27 @@
+/* Copyright 2024 Pierre Ossman for Cendio AB
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#ifndef __PRESENT_H__
+#define __PRESENT_H__
+
+#include <dix.h>
+
+Bool vncPresentInit(ScreenPtr screen);
+void vncPresentMscEvent(uint64_t id, uint64_t msc);
+
+#endif
diff --git a/unix/xserver/hw/vnc/xvnc.c b/unix/xserver/hw/vnc/xvnc.c
index 16a28831..706c9d5a 100644
--- a/unix/xserver/hw/vnc/xvnc.c
+++ b/unix/xserver/hw/vnc/xvnc.c
@@ -36,6 +36,7 @@ from the X Consortium.
 #include "RFBGlue.h"
 #include "XorgGlue.h"
 #include "RandrGlue.h"
+#include "vncPresent.h"
 #include "xorg-version.h"
 
 #include <stdio.h>
@@ -670,14 +671,14 @@ vncRandRScreenSetSize(ScreenPtr pScreen,
             ret = vncRandRCrtcSet(pScreen, crtc, NULL,
                                   crtc->x, crtc->y, crtc->rotation, 0, NULL);
             if (!ret)
-                ErrorF("Warning: Unable to disable CRTC that is outside of new screen dimensions");
+                ErrorF("Warning: Unable to disable CRTC that is outside of new screen dimensions\n");
             continue;
         }
 
         /* Just needs to be resized to a temporary mode */
         mode = vncRandRModeGet(width - crtc->x, height - crtc->y);
         if (mode == NULL) {
-            ErrorF("Warning: Unable to create custom mode for %dx%d",
+            ErrorF("Warning: Unable to create custom mode for %dx%d\n",
                    width - crtc->x, height - crtc->y);
             continue;
         }
@@ -687,7 +688,7 @@ vncRandRScreenSetSize(ScreenPtr pScreen,
                               crtc->numOutputs, crtc->outputs);
         RRModeDestroy(mode);
         if (!ret)
-            ErrorF("Warning: Unable to crop CRTC to new screen dimensions");
+            ErrorF("Warning: Unable to crop CRTC to new screen dimensions\n");
     }
 
     return TRUE;
@@ -1085,6 +1086,10 @@ vncScreenInit(ScreenPtr pScreen, int argc, char **argv)
     if (!ret)
         return FALSE;
 
+    ret = vncPresentInit(pScreen);
+    if (!ret)
+        ErrorF("Failed to initialize Present extension\n");
+
     return TRUE;
 
 }                               /* end vncScreenInit */