[RenderScript] Implement APIs for better multi-frame process support.

Bug: 23535524

 Two APIs added for multiframe processing:
 - createAllocations(...): To create an array of Allocations sharing the
   same Type and Usage. For USAGE_IO_INPUT Allocations, they also share
   the same BufferQueue.
 - getTimeStamp(): API to retrieve the time stamp associated with the
   most recent buffer.

Change-Id: I6b7b35d7dca5e87ee2f3db2ee17cb9cf824bcfe1

rs/java/android/renderscript/RenderScript.java

@@ -484,7 +484,6 @@ public class RenderScript {
         rsnAllocationCopyToBitmap(mContext, alloc, bmp);
     }
 
-
     native void rsnAllocationSyncAll(long con, long alloc, int src);
     synchronized void nAllocationSyncAll(long alloc, int src) {
         validate();
@@ -497,6 +496,16 @@ public class RenderScript {
         return rsnAllocationGetByteBuffer(mContext, alloc, stride, xBytesSize, dimY, dimZ);
     }
 
+    native void rsnAllocationSetupBufferQueue(long con, long alloc, int numAlloc);
+    synchronized void nAllocationSetupBufferQueue(long alloc, int numAlloc) {
+        validate();
+        rsnAllocationSetupBufferQueue(mContext, alloc, numAlloc);
+    }
+    native void rsnAllocationShareBufferQueue(long con, long alloc1, long alloc2);
+    synchronized void nAllocationShareBufferQueue(long alloc1, long alloc2) {
+        validate();
+        rsnAllocationShareBufferQueue(mContext, alloc1, alloc2);
+    }
     native Surface rsnAllocationGetSurface(long con, long alloc);
     synchronized Surface nAllocationGetSurface(long alloc) {
         validate();
@@ -512,13 +521,12 @@ public class RenderScript {
         validate();
         rsnAllocationIoSend(mContext, alloc);
     }
-    native void rsnAllocationIoReceive(long con, long alloc);
-    synchronized void nAllocationIoReceive(long alloc) {
+    native long rsnAllocationIoReceive(long con, long alloc);
+    synchronized long nAllocationIoReceive(long alloc) {
         validate();
-        rsnAllocationIoReceive(mContext, alloc);
+        return rsnAllocationIoReceive(mContext, alloc);
     }
 
-
     native void rsnAllocationGenerateMipmaps(long con, long alloc);
     synchronized void nAllocationGenerateMipmaps(long alloc) {
         validate();