added NATIVE_WINDOW_FORMAT attribute to android_native_window_t

include/ui/egl/android_natives.h

@@ -63,7 +63,8 @@ struct android_native_base_t
 /* attributes queriable with query() */
 enum {
     NATIVE_WINDOW_WIDTH     = 0,
-    NATIVE_WINDOW_HEIGHT    = 1
+    NATIVE_WINDOW_HEIGHT    = 1,
+    NATIVE_WINDOW_FORMAT    = 2,
 };
 
 struct android_native_window_t 

libs/ui/FramebufferNativeWindow.cpp

@@ -212,6 +212,9 @@ int FramebufferNativeWindow::query(android_native_window_t* window,
         case NATIVE_WINDOW_HEIGHT:
             *value = fb->height;
             return NO_ERROR;
+        case NATIVE_WINDOW_FORMAT:
+            *value = fb->format;
+            return NO_ERROR;
     }
     return BAD_VALUE;
 }

libs/ui/Surface.cpp

@@ -620,6 +620,9 @@ int Surface::query(int what, int* value)
         case NATIVE_WINDOW_HEIGHT:
             *value = int(mHeight);
             return NO_ERROR;
+        case NATIVE_WINDOW_FORMAT:
+            *value = int(mFormat);
+            return NO_ERROR;
     }
     return BAD_VALUE;
 }