Merge "ViewRootImpl: Add USE_BLAST flag."

graphics/java/android/graphics/BLASTBufferQueue.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.graphics;
+
+import android.view.Surface;
+import android.view.SurfaceControl;
+
+/**
+ * @hide
+ */
+public final class BLASTBufferQueue {
+    // Note: This field is accessed by native code.
+    private long mNativeObject; // BLASTBufferQueue*
+
+    private static native long nativeCreate(long surfaceControl, long width, long height);
+    private static native void nativeDestroy(long ptr);
+    private static native Surface nativeGetSurface(long ptr);
+    private static native void nativeSetNextTransaction(long ptr, long transactionPtr);
+    private static native void nativeUpdate(long ptr, long surfaceControl, long width, long height);
+
+    /** Create a new connection with the surface flinger. */
+    public BLASTBufferQueue(SurfaceControl sc, int width, int height) {
+        mNativeObject = nativeCreate(sc.mNativeObject, width, height);
+    }
+
+    public void destroy() {
+        nativeDestroy(mNativeObject);
+    }
+
+    public Surface getSurface() {
+        return nativeGetSurface(mNativeObject);
+    }
+
+    public void setNextTransaction(SurfaceControl.Transaction t) {
+        nativeSetNextTransaction(mNativeObject, t.mNativeObject);
+    }
+
+    public void update(SurfaceControl sc, int width, int height) {
+        nativeUpdate(mNativeObject, sc.mNativeObject, width, height);
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            if (mNativeObject != 0) {
+                nativeDestroy(mNativeObject);
+            }
+        } finally {
+            super.finalize();
+        }
+    }
+}
+