[client] all: add screen rotation support win:rotate

Currently only supports EGL, if there is enough demand for OpenGL
support this can be added later.

Closes #231

client/src/config.c

@@ -38,6 +38,9 @@ static bool       optSizeParse       (struct Option * opt, const char * str);
 static StringList optSizeValues      (struct Option * opt);
 static char *     optSizeToString    (struct Option * opt);
 static char *     optScancodeToString(struct Option * opt);
+static bool       optRotateParse     (struct Option * opt, const char * str);
+static StringList optRotateValues    (struct Option * opt);
+static char *     optRotateToString  (struct Option * opt);
 
 static void doLicense();
 
@@ -234,6 +237,15 @@ static struct Option options[] =
     .type           = OPTION_TYPE_BOOL,
     .value.x_bool   = false,
   },
+  {
+    .module         = "win",
+    .name           = "rotate",
+    .description    = "Rotate the displayed image",
+    .type           = OPTION_TYPE_CUSTOM,
+    .parser         = optRotateParse,
+    .getValues      = optRotateValues,
+    .toString       = optRotateToString
+  },
 
   // input options
   {
@@ -664,3 +676,46 @@ static char * optScancodeToString(struct Option * opt)
   alloc_sprintf(&str, "%d = %s", opt->value.x_int, SDL_GetScancodeName(opt->value.x_int));
   return str;
 }
+
+static bool optRotateParse(struct Option * opt, const char * str)
+{
+  if (!str)
+    return false;
+
+       if (strcasecmp(str, "up"   ) == 0) params.winRotate = LG_ROTATE_UP;
+  else if (strcasecmp(str, "down" ) == 0) params.winRotate = LG_ROTATE_DOWN;
+  else if (strcasecmp(str, "left" ) == 0) params.winRotate = LG_ROTATE_LEFT;
+  else if (strcasecmp(str, "right") == 0) params.winRotate = LG_ROTATE_RIGHT;
+  else
+    return false;
+
+  return true;
+}
+
+static StringList optRotateValues(struct Option * opt)
+{
+  StringList sl = stringlist_new(false);
+
+  stringlist_push(sl, "UP"   );
+  stringlist_push(sl, "DOWN" );
+  stringlist_push(sl, "LEFT" );
+  stringlist_push(sl, "RIGHT");
+
+  return sl;
+}
+
+static char * optRotateToString(struct Option * opt)
+{
+  const char * str;
+  switch(params.winRotate)
+  {
+    case LG_ROTATE_UP   : str = "UP"   ; break;
+    case LG_ROTATE_DOWN : str = "DOWN" ; break;
+    case LG_ROTATE_LEFT : str = "LEFT" ; break;
+    case LG_ROTATE_RIGHT: str = "RIGHT"; break;
+    default:
+      return NULL;
+  }
+
+  return strdup(str);
+}

client/src/main.c

@@ -379,6 +379,7 @@ static int cursorThread(void * unused)
         cursorType,
         cursor->width,
         cursor->height,
+        params.winRotate,
         cursor->pitch,
         data)
       )
@@ -558,6 +559,8 @@ static int frameThread(void * unused)
           frame->width, frame->height,
           frame->stride, frame->pitch);
 
+      lgrFormat.rotate = params.winRotate;
+
       if (!g_state.lgr->on_frame_format(g_state.lgrData, lgrFormat, useDMA))
       {
         DEBUG_ERROR("renderer failed to configure format");

client/src/main.h

@@ -95,53 +95,54 @@ struct AppState
 
 struct AppParams
 {
-  bool         autoResize;
-  bool         allowResize;
-  bool         keepAspect;
-  bool         forceAspect;
-  bool         dontUpscale;
-  bool         borderless;
-  bool         fullscreen;
-  bool         maximize;
-  bool         minimizeOnFocusLoss;
-  bool         center;
-  int          x, y;
-  unsigned int w, h;
-  int          fpsMin;
-  bool         showFPS;
-  bool         useSpiceInput;
-  bool         useSpiceClipboard;
-  const char * spiceHost;
-  unsigned int spicePort;
-  bool         clipboardToVM;
-  bool         clipboardToLocal;
-  bool         scaleMouseInput;
-  bool         hideMouse;
-  bool         ignoreQuit;
-  bool         noScreensaver;
-  bool         grabKeyboard;
-  bool         grabKeyboardOnFocus;
-  SDL_Scancode escapeKey;
-  bool         ignoreWindowsKeys;
-  bool         showAlerts;
-  bool         captureOnStart;
-  bool         quickSplash;
-  bool         alwaysShowCursor;
+  bool              autoResize;
+  bool              allowResize;
+  bool              keepAspect;
+  bool              forceAspect;
+  bool              dontUpscale;
+  bool              borderless;
+  bool              fullscreen;
+  bool              maximize;
+  bool              minimizeOnFocusLoss;
+  bool              center;
+  int               x, y;
+  unsigned int      w, h;
+  int               fpsMin;
+  bool              showFPS;
+  LG_RendererRotate winRotate;
+  bool              useSpiceInput;
+  bool              useSpiceClipboard;
+  const char *      spiceHost;
+  unsigned int      spicePort;
+  bool              clipboardToVM;
+  bool              clipboardToLocal;
+  bool              scaleMouseInput;
+  bool              hideMouse;
+  bool              ignoreQuit;
+  bool              noScreensaver;
+  bool              grabKeyboard;
+  bool              grabKeyboardOnFocus;
+  SDL_Scancode      escapeKey;
+  bool              ignoreWindowsKeys;
+  bool              showAlerts;
+  bool              captureOnStart;
+  bool              quickSplash;
+  bool              alwaysShowCursor;
 
-  unsigned int cursorPollInterval;
-  unsigned int framePollInterval;
-  bool         allowDMA;
+  unsigned int      cursorPollInterval;
+  unsigned int      framePollInterval;
+  bool              allowDMA;
 
-  bool         forceRenderer;
-  unsigned int forceRendererIndex;
+  bool              forceRenderer;
+  unsigned int      forceRendererIndex;
 
-  const char * windowTitle;
-  bool         mouseRedraw;
-  int          mouseSens;
-  bool         mouseSmoothing;
-  bool         rawMouse;
-  bool         autoCapture;
-  bool         captureInputOnly;
+  const char *      windowTitle;
+  bool              mouseRedraw;
+  int               mouseSens;
+  bool              mouseSmoothing;
+  bool              rawMouse;
+  bool              autoCapture;
+  bool              captureInputOnly;
 };
 
 struct CBRequest