1 files changed, 31 insertions, 0 deletions
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index c7e2c0f21fe4..0791de2269ef 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -166,6 +166,37 @@ status_t BufferQueue::setBufferCount(int bufferCount) {
     return OK;
 }
 
+int BufferQueue::query(int what, int* outValue)
+{
+    Mutex::Autolock lock(mMutex);
+
+    if (mAbandoned) {
+        ST_LOGE("query: SurfaceTexture has been abandoned!");
+        return NO_INIT;
+    }
+
+    int value;
+    switch (what) {
+    case NATIVE_WINDOW_WIDTH:
+        value = mDefaultWidth;
+        break;
+    case NATIVE_WINDOW_HEIGHT:
+        value = mDefaultHeight;
+        break;
+    case NATIVE_WINDOW_FORMAT:
+        value = mPixelFormat;
+        break;
+    case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
+        value = mSynchronousMode ?
+                (MIN_UNDEQUEUED_BUFFERS-1) : MIN_UNDEQUEUED_BUFFERS;
+        break;
+    default:
+        return BAD_VALUE;
+    }
+    outValue[0] = value;
+    return NO_ERROR;
+}
+
 status_t BufferQueue::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
     ST_LOGV("requestBuffer: slot=%d", slot);
     Mutex::Autolock lock(mMutex);