[client] spice: added initial framework for spice display fallback

client/include/app.h

@@ -179,5 +179,9 @@ bool app_guestIsOSX(void);
 bool app_guestIsBSD(void);
 bool app_guestIsOther(void);
 
+/**
+ * Enable/disable the spice display
+ */
+void app_useSpiceDisplay(bool enable);
 
 #endif

client/include/interface/renderer.h

@@ -27,17 +27,21 @@
 #include "common/framebuffer.h"
 
 #define IS_LG_RENDERER_VALID(x) \
-  ((x)->getName       && \
-   (x)->create         && \
-   (x)->initialize     && \
-   (x)->deinitialize   && \
-   (x)->onRestart     && \
-   (x)->onResize      && \
-   (x)->onMouseShape && \
-   (x)->onMouseEvent && \
-   (x)->renderStartup && \
-   (x)->needsRender   && \
-   (x)->render)
+  ((x)->getName         && \
+   (x)->create          && \
+   (x)->initialize      && \
+   (x)->deinitialize    && \
+   (x)->onRestart       && \
+   (x)->onResize        && \
+   (x)->onMouseShape    && \
+   (x)->onMouseEvent    && \
+   (x)->renderStartup   && \
+   (x)->needsRender     && \
+   (x)->render          && \
+   (x)->spiceConfigure  && \
+   (x)->spiceDrawFill   && \
+   (x)->spiceDrawBitmap && \
+   (x)->spiceShow)
 
 typedef struct LG_RendererParams
 {
@@ -167,6 +171,20 @@ typedef struct LG_RendererOps
   bool (*render)(LG_Renderer * renderer, LG_RendererRotate rotate,
       const bool newFrame, const bool invalidateWindow,
       void (*preSwap)(void * udata), void * udata);
+
+  /* setup the spice display */
+  void (*spiceConfigure)(LG_Renderer * renderer, int width, int height);
+
+  /* draw a filled rect on the spice display with the specified color */
+  void (*spiceDrawFill)(LG_Renderer * renderer, int x, int y, int width,
+      int height, uint32_t color);
+
+  /* draw an image on the spice display, data is RGBA32 */
+  void (*spiceDrawBitmap)(LG_Renderer * renderer, int x, int y, int width,
+      int height, int stride, uint8_t * data);
+
+  /* show the spice display */
+  void (*spiceShow)(LG_Renderer * renderer, bool show);
 }
 LG_RendererOps;