msm8976-common: Enable WiFi Display

Change-Id: I80a4371f35ff9bff947bf48929013e9d8018a1a7

overlay/frameworks/base/core/res/res/values/config.xml

@@ -156,6 +156,32 @@
     <!-- Boolean indicating whether the wifi chipset has background scan support -->
     <bool translatable="false" name="config_wifi_background_scan_support">true</bool>
 
+    <!-- Whether WiFi display is supported by this device.
+         There are many prerequisites for this feature to work correctly.
+         Here are a few of them:
+         * The WiFi radio must support WiFi P2P.
+         * The WiFi radio must support concurrent connections to the WiFi display and
+           to an access point.
+         * The Audio Flinger audio_policy.conf file must specify a rule for the "r_submix"
+           remote submix module.  This module is used to record and stream system
+           audio output to the WiFi display encoder in the media server.
+         * The remote submix module "audio.r_submix.default" must be installed on the device.
+         * The device must be provisioned with HDCP keys (for protected content).
+    -->
+    <bool name="config_enableWifiDisplay">true</bool>
+
+    <!-- Set to true if the wifi display supports compositing content stored
+         in gralloc protected buffers.  For this to be true, there must exist
+         a protected hardware path for surface flinger to composite and send
+         protected buffers to the wifi display video encoder.
+         If this flag is false, we advise applications not to use protected
+         buffers (if possible) when presenting content to a wifi display because
+         the content may be blanked.
+         This flag controls whether the {@link Display#FLAG_SUPPORTS_PROTECTED_BUFFERS}
+         flag is set for wifi displays.
+    -->
+    <bool name="config_wifiDisplaySupportsProtectedBuffers">true</bool>
+
     <!-- Wifi driver supports batched scan -->
     <bool translatable="false" name="config_wifi_batched_scan_supported">true</bool>