ANativeWindow: add queues-to-window-composer check.

This change adds a new 'method' to the ANativeWindow interface to check
whether buffers queued to the window will be sent directly to the system
window compositor.

Change-Id: I4d4b199e328c110b68b250029aea650f03c8724d
Bug: 3495535

1 files changed, 4 insertions, 0 deletions

diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index 43b330c79e77..a40fac9e926b 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -156,6 +156,10 @@ int SurfaceTextureClient::query(int what, int* value) {
     case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
         *value = MIN_UNDEQUEUED_BUFFERS;
         return NO_ERROR;
+    case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
+        // SurfaceTextureClient currently never queues frames to SurfaceFlinger.
+        *value = 0;
+        return NO_ERROR;
     }
     return BAD_VALUE;
 }