upload android base code part6

android/system/bt/hci/include/packet_fragmenter.h

@@ -0,0 +1,64 @@
+/******************************************************************************
+ *
+ *  Copyright (C) 2014 Google, Inc.
+ *
+ *  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.
+ *
+ ******************************************************************************/
+
+#pragma once
+
+#include "bt_types.h"
+#include "hci_layer.h"
+#include "osi/include/allocator.h"
+
+typedef void (*transmit_finished_cb)(BT_HDR* packet, bool all_fragments_sent);
+typedef void (*packet_reassembled_cb)(BT_HDR* packet);
+typedef void (*packet_fragmented_cb)(BT_HDR* packet,
+                                     bool send_transmit_finished);
+
+typedef struct {
+  // Called for every packet fragment.
+  packet_fragmented_cb fragmented;
+
+  // Called for every completely reassembled packet.
+  packet_reassembled_cb reassembled;
+
+  // Called when the fragmenter finishes sending all requested fragments,
+  // but the packet has not been entirely sent.
+  transmit_finished_cb transmit_finished;
+} packet_fragmenter_callbacks_t;
+
+typedef struct packet_fragmenter_t {
+  // Initialize the fragmenter, specifying the |result_callbacks|.
+  void (*init)(const packet_fragmenter_callbacks_t* result_callbacks);
+
+  // Release all resources associated with the fragmenter.
+  void (*cleanup)(void);
+
+  // Fragments |packet| if necessary and hands off everything to the fragmented
+  // callback.
+  void (*fragment_and_dispatch)(BT_HDR* packet);
+  // If |packet| is a complete packet, forwards to the reassembled callback.
+  // Otherwise
+  // holds onto it until all fragments arrive, at which point the reassembled
+  // callback is called
+  // with the reassembled data.
+  void (*reassemble_and_dispatch)(BT_HDR* packet);
+} packet_fragmenter_t;
+
+const packet_fragmenter_t* packet_fragmenter_get_interface();
+
+const packet_fragmenter_t* packet_fragmenter_get_test_interface(
+    const controller_t* controller_interface,
+    const allocator_t* buffer_allocator_interface);