[client] spice: delay showing the spice display until spice is ready

client/src/app.c

@@ -24,6 +24,7 @@
 #include "core.h"
 #include "util.h"
 #include "clipboard.h"
+#include "render_queue.h"
 
 #include "kb.h"
 
@@ -1043,6 +1044,13 @@ void app_useSpiceDisplay(bool enable)
   if (!g_params.useSpice || lastState == enable)
     return;
 
+  // if spice is not yet ready, flag the state we want for when it is
+  if (!g_state.spiceReady)
+  {
+    g_state.initialSpiceDisplay = enable;
+    return;
+  }
+
   if (!purespice_hasChannel(PS_CHANNEL_DISPLAY))
     return;
 
@@ -1054,11 +1062,11 @@ void app_useSpiceDisplay(bool enable)
   if (enable)
   {
     purespice_connectChannel(PS_CHANNEL_DISPLAY);
-    RENDERER(spiceShow, true);
+    renderQueue_spiceShow(true);
   }
   else
   {
+    renderQueue_spiceShow(false);
     purespice_disconnectChannel(PS_CHANNEL_DISPLAY);
-    RENDERER(spiceShow, false);
   }
 }

client/src/main.c

@@ -845,6 +845,10 @@ static void checkUUID(void)
 
 void spiceReady(void)
 {
+  g_state.spiceReady = true;
+  if (g_state.initialSpiceDisplay)
+    app_useSpiceDisplay(true);
+
   // set the intial mouse mode
   purespice_mouseMode(true);
 
@@ -864,7 +868,6 @@ void spiceReady(void)
     return;
 
   memcpy(g_state.spiceUUID, info.uuid, sizeof(g_state.spiceUUID));
-  g_state.spiceReady = true;
   checkUUID();
 
   if (g_params.useSpiceInput)
@@ -962,6 +965,11 @@ int spiceThread(void * arg)
 #endif
   };
 
+  /* use the spice display until we get frames from the LG host application
+   * it is safe to call this before connect as it will be delayed until
+   * spiceReady is called */
+  app_useSpiceDisplay(true);
+
   if (!purespice_connect(&config))
   {
     DEBUG_ERROR("Failed to connect to spice server");
@@ -1317,9 +1325,6 @@ static int lg_run(void)
   if (g_state.cbAvailable)
     g_state.cbRequestList = ll_new();
 
-  // use the spice display until we get frames from the LG host application
-  app_useSpiceDisplay(true);
-
   LGMP_STATUS status;
 
   while(g_state.state == APP_STATE_RUNNING)

client/src/main.h

@@ -71,6 +71,7 @@ struct AppState
 
   uint8_t spiceUUID[16];
   bool    spiceReady;
+  bool    initialSpiceDisplay;
   uint8_t guestUUID[16];
   bool    guestUUIDValid;
   KVMFROS guestOS;

client/src/render_queue.c

@@ -47,7 +47,7 @@ void renderQueue_clear(void)
   while(ll_shift(l_renderQueue, (void **)&cmd))
   {
     if (cmd->op == SPICE_OP_DRAW_BITMAP)
-      free(cmd->drawBitmap.data);
+      free(cmd->spiceDrawBitmap.data);
     free(cmd);
   }
 }
@@ -59,8 +59,8 @@ void renderQueue_spiceConfigure(int width, int height)
 
   RenderCommand * cmd = malloc(sizeof(*cmd));
   cmd->op                    = SPICE_OP_CONFIGURE;
-  cmd->configure.width  = width;
-  cmd->configure.height = height;
+  cmd->spiceConfigure.width  = width;
+  cmd->spiceConfigure.height = height;
   ll_push(l_renderQueue, cmd);
   app_invalidateWindow(true);
 }
@@ -70,11 +70,11 @@ void renderQueue_spiceDrawFill(int x, int y, int width, int height,
 {
   RenderCommand * cmd = malloc(sizeof(*cmd));
   cmd->op                   = SPICE_OP_DRAW_FILL;
-  cmd->fillRect.x      = x;
-  cmd->fillRect.y      = y;
-  cmd->fillRect.width  = width;
-  cmd->fillRect.height = height;
-  cmd->fillRect.color  = color;
+  cmd->spiceFillRect.x      = x;
+  cmd->spiceFillRect.y      = y;
+  cmd->spiceFillRect.width  = width;
+  cmd->spiceFillRect.height = height;
+  cmd->spiceFillRect.color  = color;
   ll_push(l_renderQueue, cmd);
   app_invalidateWindow(true);
 }
@@ -84,14 +84,23 @@ void renderQueue_spiceDrawBitmap(int x, int y, int width, int height, int stride
 {
   RenderCommand * cmd = malloc(sizeof(*cmd));
   cmd->op                      = SPICE_OP_DRAW_BITMAP;
-  cmd->drawBitmap.x       = x;
-  cmd->drawBitmap.y       = y;
-  cmd->drawBitmap.width   = width;
-  cmd->drawBitmap.height  = height;
-  cmd->drawBitmap.stride  = stride;
-  cmd->drawBitmap.data    = malloc(height * stride);
-  cmd->drawBitmap.topDown = topDown;
-  memcpy(cmd->drawBitmap.data, data, height * stride);
+  cmd->spiceDrawBitmap.x       = x;
+  cmd->spiceDrawBitmap.y       = y;
+  cmd->spiceDrawBitmap.width   = width;
+  cmd->spiceDrawBitmap.height  = height;
+  cmd->spiceDrawBitmap.stride  = stride;
+  cmd->spiceDrawBitmap.data    = malloc(height * stride);
+  cmd->spiceDrawBitmap.topDown = topDown;
+  memcpy(cmd->spiceDrawBitmap.data, data, height * stride);
+  ll_push(l_renderQueue, cmd);
+  app_invalidateWindow(true);
+}
+
+void renderQueue_spiceShow(bool show)
+{
+  RenderCommand * cmd = malloc(sizeof(*cmd));
+  cmd->op             = SPICE_OP_SHOW;
+  cmd->spiceShow.show = show;
   ll_push(l_renderQueue, cmd);
   app_invalidateWindow(true);
 }
@@ -105,23 +114,27 @@ void renderQueue_process(void)
     {
       case SPICE_OP_CONFIGURE:
         RENDERER(spiceConfigure,
-            cmd->configure.width, cmd->configure.height);
+            cmd->spiceConfigure.width, cmd->spiceConfigure.height);
         break;
 
       case SPICE_OP_DRAW_FILL:
         RENDERER(spiceDrawFill,
-            cmd->fillRect.x    , cmd->fillRect.y,
-            cmd->fillRect.width, cmd->fillRect.height,
-            cmd->fillRect.color);
+            cmd->spiceFillRect.x    , cmd->spiceFillRect.y,
+            cmd->spiceFillRect.width, cmd->spiceFillRect.height,
+            cmd->spiceFillRect.color);
         break;
 
       case SPICE_OP_DRAW_BITMAP:
         RENDERER(spiceDrawBitmap,
-            cmd->drawBitmap.x     , cmd->drawBitmap.y,
-            cmd->drawBitmap.width , cmd->drawBitmap.height,
-            cmd->drawBitmap.stride, cmd->drawBitmap.data,
-            cmd->drawBitmap.topDown);
-        free(cmd->drawBitmap.data);
+            cmd->spiceDrawBitmap.x     , cmd->spiceDrawBitmap.y,
+            cmd->spiceDrawBitmap.width , cmd->spiceDrawBitmap.height,
+            cmd->spiceDrawBitmap.stride, cmd->spiceDrawBitmap.data,
+            cmd->spiceDrawBitmap.topDown);
+        free(cmd->spiceDrawBitmap.data);
+        break;
+
+      case SPICE_OP_SHOW:
+        RENDERER(spiceShow, cmd->spiceShow.show);
         break;
     }
     free(cmd);

client/src/render_queue.h

@@ -26,7 +26,8 @@ typedef struct
   {
     SPICE_OP_CONFIGURE,
     SPICE_OP_DRAW_FILL,
-    SPICE_OP_DRAW_BITMAP
+    SPICE_OP_DRAW_BITMAP,
+    SPICE_OP_SHOW
   }
   op;
 
@@ -36,7 +37,7 @@ typedef struct
     {
       int width, height;
     }
-    configure;
+    spiceConfigure;
 
     struct
     {
@@ -44,7 +45,7 @@ typedef struct
       int      width, height;
       uint32_t color;
     }
-    fillRect;
+    spiceFillRect;
 
     struct
     {
@@ -54,7 +55,13 @@ typedef struct
       uint8_t * data;
       bool      topDown;
     }
-    drawBitmap;
+    spiceDrawBitmap;
+
+    struct
+    {
+      bool show;
+    }
+    spiceShow;
   };
 }
 RenderCommand;
@@ -71,3 +78,5 @@ void renderQueue_spiceDrawFill(int x, int y, int width, int height,
 
 void renderQueue_spiceDrawBitmap(int x, int y, int width, int height, int stride,
     void * data, bool topDown);
+
+void renderQueue_spiceShow(bool show);