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/******************************************************************************
*
* Copyright 2015 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.
*
******************************************************************************/
#include <base/logging.h>
#include "gd/common/init_flags.h"
#include "hci/include/btsnoop_mem.h"
static btsnoop_data_cb data_callback = NULL;
static activity_attribution_cb attribution_callback = NULL;
void btsnoop_mem_set_callback(btsnoop_data_cb cb) { data_callback = cb; }
void activity_attribution_set_callback(activity_attribution_cb cb) {
attribution_callback = cb;
}
void btsnoop_mem_capture(const BT_HDR* packet, uint64_t timestamp_us) {
if (!data_callback && !attribution_callback) return;
CHECK(packet);
const uint8_t* data = &packet->data[packet->offset];
const uint16_t type = packet->event & BT_EVT_MASK;
size_t length = 0;
switch (type) {
case BT_EVT_TO_LM_HCI_CMD:
if (packet->len > 2) length = data[2] + 3;
break;
case BT_EVT_TO_BTU_HCI_EVT:
if (packet->len > 1) length = data[1] + 2;
break;
case BT_EVT_TO_LM_HCI_ACL:
case BT_EVT_TO_BTU_HCI_ACL:
if (packet->len > 3) length = (data[2] | (data[3] << 8)) + 4;
break;
case BT_EVT_TO_LM_HCI_SCO:
case BT_EVT_TO_BTU_HCI_SCO:
if (packet->len > 2) length = data[2] + 3;
break;
case BT_EVT_TO_LM_HCI_ISO:
case BT_EVT_TO_BTU_HCI_ISO:
if (packet->len > 3) length = (data[2] | ((data[3] & 0x3f) << 8)) + 4;
break;
}
if (length && data_callback)
(*data_callback)(type, data, length, timestamp_us);
if (length && attribution_callback &&
bluetooth::common::init_flags::btaa_hci_is_enabled()) {
(*attribution_callback)(type, data, length, timestamp_us);
}
}
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