OVMS3-idf/components/bt/bluedroid/hci/include/packet_fragmenter.h

62 lines
2.4 KiB
C

/******************************************************************************
*
* 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.
*
******************************************************************************/
#ifndef _PACKET_FRAGMENTER_H_
#define _PACKET_FRAGMENTER_H_
#include "allocator.h"
#include "bt_types.h"
#include "hci_layer.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);
// CHeck if Current fragmenter is ongoing
BT_HDR *(*fragment_current_packet)(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();
#endif /* _PACKET_FRAGMENTER_H_ */