[client] main: add support for spice cursor channel

client/src/app.c

@@ -1087,12 +1087,14 @@ bool app_useSpiceDisplay(bool enable)
   if (enable)
   {
     purespice_connectChannel(PS_CHANNEL_DISPLAY);
+    purespice_connectChannel(PS_CHANNEL_CURSOR);
     renderQueue_spiceShow(true);
   }
   else
   {
     renderQueue_spiceShow(false);
     purespice_disconnectChannel(PS_CHANNEL_DISPLAY);
+    purespice_disconnectChannel(PS_CHANNEL_CURSOR);
   }
 
   overlayStatus_set(LG_USER_STATUS_SPICE, enable);

client/src/main.c

@@ -923,6 +923,35 @@ static void spice_drawBitmap(unsigned int surfaceId, PSBitmapFormat format,
   renderQueue_spiceDrawBitmap(x, y, width, height, stride, data, topDown);
 }
 
+static void spice_setCursorRGBAImage(int width, int height, int hx, int hy,
+    const void * data)
+{
+  g_state.spiceHotX = hx;
+  g_state.spiceHotY = hy;
+
+  void * copied = malloc(width * height * 4);
+  memcpy(copied, data, width * height * 4);
+  renderQueue_cursorImage(false, width, height, width * 4, copied);
+}
+
+static void spice_setCursorMonoImage(int width, int height, int hx, int hy,
+    const void * xorMask, const void * andMask)
+{
+  g_state.spiceHotX = hx;
+  g_state.spiceHotY = hy;
+
+  int stride = (width + 7) / 8;
+  uint8_t * buffer = malloc(stride * height * 2);
+  memcpy(buffer, xorMask, stride * height);
+  memcpy(buffer + stride * height, andMask, stride * height);
+  renderQueue_cursorImage(true, width, height * 2, stride, buffer);
+}
+
+static void spice_setCursorState(bool visible, int x, int y)
+{
+  renderQueue_cursorState(visible, x, y, g_state.spiceHotX, g_state.spiceHotY);
+}
+
 int spiceThread(void * arg)
 {
   if (g_params.useSpiceAudio)
@@ -956,6 +985,14 @@ int spiceThread(void * arg)
       .drawFill       = spice_drawFill,
       .drawBitmap     = spice_drawBitmap
     },
+    .cursor   =
+    {
+      .enable       = true,
+      .autoConnect  = false,
+      .setRGBAImage = spice_setCursorRGBAImage,
+      .setMonoImage = spice_setCursorMonoImage,
+      .setState     = spice_setCursorState,
+    },
 #if ENABLE_AUDIO
     .playback =
     {

client/src/main.h

@@ -150,6 +150,8 @@ struct AppState
   bool     autoIdleInhibitState;
 
   enum MicDefaultState micDefaultState;
+
+  int spiceHotX, spiceHotY;
 };
 
 struct AppParams