/*
 * Copyright (C) 2015 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.
 */

/*****************************************************************************
 *
 *  Filename:      btif_rc.c
 *
 *  Description:   Bluetooth AVRC implementation
 *
 *****************************************************************************/

#define LOG_TAG "bt_btif_avrc"

#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#include <hardware/bluetooth.h>
#include <hardware/bt_rc.h>

#include "avrc_defs.h"
#include "bta_api.h"
#include "bta_av_api.h"
#include "btif_av.h"
#include "btif_common.h"
#include "btif_util.h"
#include "bt_common.h"
#include "device/include/interop.h"
#include "uinput.h"
#include "bdaddr.h"
#include "osi/include/list.h"
#include "osi/include/properties.h"
#include "btu.h"
#define RC_INVALID_TRACK_ID (0xFFFFFFFFFFFFFFFFULL)

/*****************************************************************************
**  Constants & Macros
******************************************************************************/

/* Support Two RC Handles simultaneously*/
#define BTIF_RC_NUM_CB       2
/* Default index*/
#define BTIF_RC_DEFAULT_INDEX 0
/* cod value for Headsets */
#define COD_AV_HEADSETS        0x0404
/* for AVRC 1.4 need to change this */
#define MAX_RC_NOTIFICATIONS AVRC_EVT_VOLUME_CHANGE
//#define TEST_BROWSE_RESPONSE
#define MAX_FOLDER_RSP_SUPPORT 10

#define IDX_GET_PLAY_STATUS_RSP    0
#define IDX_LIST_APP_ATTR_RSP      1
#define IDX_LIST_APP_VALUE_RSP     2
#define IDX_GET_CURR_APP_VAL_RSP   3
#define IDX_SET_APP_VAL_RSP        4
#define IDX_GET_APP_ATTR_TXT_RSP   5
#define IDX_GET_APP_VAL_TXT_RSP    6
#define IDX_GET_ELEMENT_ATTR_RSP   7
#define IDX_GET_FOLDER_ITEMS_RSP   8
#define IDX_SET_FOLDER_ITEM_RSP    9
#define IDX_SET_ADDRESS_PLAYER_RSP 10
#define IDX_SET_BROWSE_PLAYER_RSP  11
#define IDX_CHANGE_PATH_RSP        12
#define IDX_PLAY_ITEM_RSP          13
#define IDX_GET_ITEM_ATTR_RSP      14
#define IDX_GET_TOTAL_ITEMS_RSP    15
#define MAX_VOLUME 128
#define MAX_LABEL 16
#define MAX_TRANSACTIONS_PER_SESSION 16
#define PLAY_STATUS_PLAYING 1
#define MAX_CMD_QUEUE_LEN 16
#define ERR_PLAYER_NOT_ADDRESED 0x13
#define BTRC_FEAT_AVRC_UI_UPDATE 0x08

#if (defined(AVCT_COVER_ART_INCLUDED) && (AVCT_COVER_ART_INCLUDED == TRUE))
#define MAX_ELEM_ATTR_SIZE 8
#else
#define MAX_ELEM_ATTR_SIZE 7
#endif

#define CHECK_RC_CONNECTED                                                                  \
    BTIF_TRACE_DEBUG("## %s ##", __FUNCTION__);                                            \
    int clients;                                                                           \
    int conn_status = BT_STATUS_NOT_READY;                                                      \
    for (clients = 0; clients < btif_max_rc_clients; clients++)                            \
    {                                                                                      \
        if ((btif_rc_cb[clients].rc_connected == TRUE))                                    \
            conn_status = BT_STATUS_SUCCESS;                                                    \
    }                                                                                      \
    if(conn_status == BT_STATUS_NOT_READY)                                                      \
    {                                                                                      \
        BTIF_TRACE_WARNING("Function %s() called when RC is not connected", __FUNCTION__); \
        return BT_STATUS_NOT_READY;                                                        \
    }

#define TXN_LABEL_ENQUEUE(handle, label, front, rear, size, item, cmd)   \
{                                                                        \
    if (size == MAX_TRANSACTIONS_PER_SESSION)                            \
    {                                                                    \
        send_reject_response(handle, item, cmd, AVRC_STS_INTERNAL_ERR);  \
        break;                                                           \
    }                                                                    \
    rear = (rear + 1) % MAX_TRANSACTIONS_PER_SESSION;                    \
    label[rear] = item;                                                  \
    size = size + 1;                                                     \
}

#define TXN_LABEL_DEQUEUE(label, front, rear, size)        \
{                                                          \
    if (size == 0)                                         \
        return BT_STATUS_UNHANDLED;                        \
    front = (front + 1) % MAX_TRANSACTIONS_PER_SESSION;    \
    size = size - 1;                                       \
}

#define FILL_PDU_QUEUE(idx, ctype, label, pending, index, cmd)                                 \
{                                                                                              \
    btif_rc_cb[index].rc_pdu_info[idx].ctype = ctype;                                          \
    TXN_LABEL_ENQUEUE(btif_rc_cb[index].rc_handle, btif_rc_cb[index].rc_pdu_info[idx].label,   \
            btif_rc_cb[index].rc_pdu_info[idx].front, btif_rc_cb[index].rc_pdu_info[idx].rear, \
            btif_rc_cb[index].rc_pdu_info[idx].size, label, cmd);                              \
    BTIF_TRACE_DEBUG("%s txn label %d enqueued to txn queue of pdu %s, queue size %d \n",      \
            __FUNCTION__, label, dump_rc_pdu(cmd), btif_rc_cb[index].rc_pdu_info[idx].size);   \
    btif_rc_cb[index].rc_pdu_info[idx].is_rsp_pending = pending;                               \
}

#define SEND_METAMSG_RSP(idx, avrc_rsp, index)                                                 \
{                                                                                              \
    UINT8 curr_label = btif_rc_cb[index].rc_pdu_info[idx].label[                               \
            btif_rc_cb[index].rc_pdu_info[idx].front];                                         \
    if(btif_rc_cb[index].rc_pdu_info[idx].is_rsp_pending == FALSE)                             \
    {                                                                                          \
        BTIF_TRACE_WARNING("%s Not sending response as no PDU was registered", __FUNCTION__);  \
        return BT_STATUS_UNHANDLED;                                                            \
    }                                                                                          \
    TXN_LABEL_DEQUEUE(btif_rc_cb[index].rc_pdu_info[idx].label,                                \
            btif_rc_cb[index].rc_pdu_info[idx].front,                                          \
            btif_rc_cb[index].rc_pdu_info[idx].rear,                                           \
            btif_rc_cb[index].rc_pdu_info[idx].size);                                          \
    send_metamsg_rsp(btif_rc_cb[index].rc_handle, curr_label,                                  \
            btif_rc_cb[index].rc_pdu_info[idx].ctype, avrc_rsp);                               \
    BTIF_TRACE_DEBUG("%s txn label %d dequeued from txn queue, queue sz %d \n", __FUNCTION__,  \
            curr_label, btif_rc_cb[index].rc_pdu_info[idx].size);                              \
    btif_rc_cb[index].rc_pdu_info[idx].ctype = 0;                                              \
    if (btif_rc_cb[index].rc_pdu_info[idx].size == 0)                                          \
        btif_rc_cb[index].rc_pdu_info[idx].is_rsp_pending = FALSE;                             \
}

#define SEND_BROWSEMSG_RSP(idx , avrc_rsp, index)                                              \
{                                                                                              \
    UINT8 curr_label = btif_rc_cb[index].rc_pdu_info[idx].label[                               \
            btif_rc_cb[index].rc_pdu_info[idx].front];                                         \
    if(btif_rc_cb[index].rc_pdu_info[idx].is_rsp_pending == FALSE)                             \
    {                                                                                          \
        BTIF_TRACE_WARNING("%s Not sending response as no PDU was registered", __FUNCTION__);  \
        return BT_STATUS_UNHANDLED;                                                            \
    }                                                                                          \
    TXN_LABEL_DEQUEUE(btif_rc_cb[index].rc_pdu_info[idx].label,                                \
            btif_rc_cb[index].rc_pdu_info[idx].front,                                          \
            btif_rc_cb[index].rc_pdu_info[idx].rear,                                           \
            btif_rc_cb[index].rc_pdu_info[idx].size);                                          \
    send_browsemsg_rsp(btif_rc_cb[index].rc_handle, curr_label,                                \
            btif_rc_cb[index].rc_pdu_info[idx].ctype, avrc_rsp);                               \
    BTIF_TRACE_DEBUG("%s txn label %d dequeued from txn queue, queue sz %d \n", __FUNCTION__,  \
            curr_label, btif_rc_cb[index].rc_pdu_info[idx].size);                              \
    btif_rc_cb[index].rc_pdu_info[idx].ctype = 0;                                              \
    if (btif_rc_cb[index].rc_pdu_info[idx].size == 0)                                          \
        btif_rc_cb[index].rc_pdu_info[idx].is_rsp_pending = FALSE;                             \
}

/*****************************************************************************
**  Local type definitions
******************************************************************************/
typedef struct {
    UINT8 bNotify;
    UINT8 label;
} btif_rc_reg_notifications_t;

typedef struct
{
    int front;
    int rear;
    int size;
    UINT8 label[MAX_TRANSACTIONS_PER_SESSION];
    UINT8   ctype;
    BOOLEAN is_rsp_pending;
} btif_rc_cmd_ctxt_t;

/* 2 second timeout to get interim response */
#define BTIF_TIMEOUT_RC_INTERIM_RSP_MS     (2 * 1000)
#define BTIF_TIMEOUT_RC_STATUS_CMD_MS      (2 * 1000)
#define BTIF_TIMEOUT_RC_CONTROL_CMD_MS     (2 * 1000)


typedef enum
{
    eNOT_REGISTERED,
    eREGISTERED,
    eINTERIM
} btif_rc_nfn_reg_status_t;

typedef struct {
    UINT8                       event_id;
    UINT8                       label;
    btif_rc_nfn_reg_status_t    status;
} btif_rc_supported_event_t;

#define BTIF_RC_STS_TIMEOUT     0xFE
typedef struct {
    UINT8   label;
    UINT8   pdu_id;
} btif_rc_status_cmd_timer_t;

typedef struct {
    UINT8   label;
    UINT8   pdu_id;
} btif_rc_control_cmd_timer_t;

typedef struct {
    union {
        btif_rc_status_cmd_timer_t rc_status_cmd;
        btif_rc_control_cmd_timer_t rc_control_cmd;
    };
} btif_rc_timer_context_t;

typedef struct {
    BOOLEAN  query_started;
    UINT8 num_attrs;
    UINT8 num_ext_attrs;

    UINT8 attr_index;
    UINT8 ext_attr_index;
    UINT8 ext_val_index;
    btrc_player_app_attr_t attrs[AVRC_MAX_APP_ATTR_SIZE];
    btrc_player_app_ext_attr_t ext_attrs[AVRC_MAX_APP_ATTR_SIZE];
} btif_rc_player_app_settings_t;

/* TODO : Merge btif_rc_reg_notifications_t and btif_rc_cmd_ctxt_t to a single struct */
typedef struct {
    BOOLEAN                     rc_connected;
    UINT8                       rc_handle;
    tBTA_AV_FEAT                rc_features;
    BD_ADDR                     rc_addr;
    UINT16                      rc_pending_play;
    btif_rc_cmd_ctxt_t          rc_pdu_info[MAX_CMD_QUEUE_LEN];
    btif_rc_reg_notifications_t rc_notif[MAX_RC_NOTIFICATIONS];
    unsigned int                rc_volume;
    uint8_t                     rc_vol_label;
    list_t                      *rc_supported_event_list;
    btif_rc_player_app_settings_t   rc_app_settings;
    alarm_t                     *rc_play_status_timer;
    BOOLEAN                     rc_features_processed;
    UINT64                      rc_playing_uid;
    BOOLEAN                     rc_procedure_complete;
    BOOLEAN                     rc_play_processed;
} btif_rc_cb_t;

typedef struct {
    BOOLEAN in_use;
    UINT8 lbl;
    UINT8 handle;
    btif_rc_timer_context_t txn_timer_context;
    alarm_t *txn_timer;
} rc_transaction_t;

typedef struct
{
    pthread_mutex_t lbllock;
    rc_transaction_t transaction[MAX_TRANSACTIONS_PER_SESSION];
    BOOLEAN lbllock_destroyed;
} rc_device_t;

rc_device_t device;

#define MAX_UINPUT_PATHS 3
static int btif_max_rc_clients = 1;
static const char* uinput_dev_path[] =
                       {"/dev/uinput", "/dev/input/uinput", "/dev/misc/uinput" };
static int uinput_fd = -1;
static BD_ADDR bd_null= {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static int  send_event (int fd, uint16_t type, uint16_t code, int32_t value);
static void send_key (int fd, uint16_t key, int pressed);
static int  uinput_driver_check();
static int  uinput_create(char *name);
static int  init_uinput (void);
static void close_uinput (void);
static void sleep_ms(period_ms_t timeout_ms);

static const struct {
    const char *name;
    uint8_t avrcp;
    uint16_t mapped_id;
    uint8_t release_quirk;
} key_map[] = {
    { "PLAY",         AVRC_ID_PLAY,     KEY_PLAYCD,       1 },
    { "STOP",         AVRC_ID_STOP,     KEY_STOPCD,       0 },
    { "PAUSE",        AVRC_ID_PAUSE,    KEY_PAUSECD,      1 },
    { "FORWARD",      AVRC_ID_FORWARD,  KEY_NEXTSONG,     0 },
    { "BACKWARD",     AVRC_ID_BACKWARD, KEY_PREVIOUSSONG, 0 },
    { "REWIND",       AVRC_ID_REWIND,   KEY_REWIND,       0 },
    { "FAST FORWARD", AVRC_ID_FAST_FOR, KEY_FAST_FORWARD, 0 },
    { NULL,           0,                0,                0 }
};

static void send_reject_response (UINT8 rc_handle, UINT8 label,
    UINT8 pdu, UINT8 status);
static UINT8 opcode_from_pdu(UINT8 pdu);
static void send_metamsg_rsp (UINT8 rc_handle, UINT8 label,
    tBTA_AV_CODE code, tAVRC_RESPONSE *pmetamsg_resp);
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
static void register_volumechange(UINT8 label, int index);
#endif
static void lbl_init();
static void lbl_destroy();
static void init_all_transactions();
static bt_status_t  get_transaction(rc_transaction_t **ptransaction);
static void release_transaction(UINT8 label);
static rc_transaction_t* get_transaction_by_lbl(UINT8 label);
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
static void handle_rc_metamsg_rsp(tBTA_AV_META_MSG *pmeta_msg);
#endif
#if (AVRC_CTLR_INCLUDED == TRUE)
static void handle_avk_rc_metamsg_cmd(tBTA_AV_META_MSG *pmeta_msg);
static void handle_avk_rc_metamsg_rsp(tBTA_AV_META_MSG *pmeta_msg);
static void btif_rc_ctrl_upstreams_rsp_cmd(
    UINT8 event, tAVRC_COMMAND *pavrc_cmd, UINT8 label);
static void rc_ctrl_procedure_complete();
static void rc_stop_play_status_timer();
static void register_for_event_notification (btif_rc_supported_event_t *p_event);
static void handle_get_capability_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_CAPS_RSP *p_rsp);
static void handle_app_attr_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_LIST_APP_ATTR_RSP *p_rsp);
static void handle_app_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_LIST_APP_VALUES_RSP *p_rsp);
static void handle_app_cur_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_CUR_APP_VALUE_RSP *p_rsp);
static void handle_app_attr_txt_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp);
static void handle_app_attr_val_txt_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp);
static void handle_get_playstatus_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_PLAY_STATUS_RSP *p_rsp);
static void handle_get_elem_attr_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_ELEM_ATTRS_RSP *p_rsp);
static void handle_set_app_attr_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_RSP *p_rsp);
static bt_status_t get_play_status_cmd(void);
static bt_status_t get_player_app_setting_value_text_cmd (UINT8 *vals, UINT8 num_vals);
static bt_status_t register_notification_cmd (UINT8 label, UINT8 event_id, UINT32 event_value);
static bt_status_t get_element_attribute_cmd (uint8_t num_attribute, uint32_t *p_attr_ids);
static bt_status_t getcapabilities_cmd (uint8_t cap_id);
static bt_status_t list_player_app_setting_attrib_cmd(void);
static bt_status_t list_player_app_setting_value_cmd(uint8_t attrib_id);
static bt_status_t get_player_app_setting_cmd(uint8_t num_attrib, uint8_t* attrib_ids);
#endif
static void rc_start_play_status_timer(void);
static bool absolute_volume_disabled(void);
static void btif_rc_upstreams_evt(UINT16 event, tAVRC_COMMAND* p_param, UINT8 ctype, UINT8 label,
                                    int index);
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
static void btif_rc_upstreams_rsp_evt(UINT16 event, tAVRC_RESPONSE *pavrc_resp, UINT8 ctype, UINT8 label,
                                    int index);
#endif
static bt_status_t set_addrplayer_rsp(btrc_status_t status_code, bt_bdaddr_t *bd_addr);
static int btif_rc_get_idx_by_addr(BD_ADDR address);

/*Added for Browsing Message Response */
static void send_browsemsg_rsp (UINT8 rc_handle, UINT8 label,
    tBTA_AV_CODE code, tAVRC_RESPONSE *pmetamsg_resp);


/*****************************************************************************
**  Static variables
******************************************************************************/
/* Two RC CBs needed to handle two connections*/
static btif_rc_cb_t btif_rc_cb[BTIF_RC_NUM_CB];
static btrc_callbacks_t *bt_rc_callbacks = NULL;
static btrc_ctrl_callbacks_t *bt_rc_ctrl_callbacks = NULL;

/*****************************************************************************
**  Static functions
******************************************************************************/
static UINT8 btif_rc_get_idx_by_rc_handle(UINT8 rc_handle);

/*****************************************************************************
**  Externs
******************************************************************************/
extern BOOLEAN btif_hf_call_terminated_recently();
extern BOOLEAN check_cod(const bt_bdaddr_t *remote_bdaddr, uint32_t cod);
extern void btif_get_latest_playing_device(BD_ADDR address); //get the Playing device address
extern BOOLEAN btif_av_is_playing();
extern BOOLEAN btif_av_is_device_connected(BD_ADDR address);
extern void btif_av_trigger_dual_handoff(BOOLEAN handoff, BD_ADDR address);
extern BOOLEAN btif_hf_is_call_idle();
extern BOOLEAN btif_av_is_current_device(BD_ADDR address);
extern UINT16 btif_av_get_num_connected_devices(void);
extern UINT16 btif_av_get_num_playing_devices(void);

extern fixed_queue_t *btu_general_alarm_queue;

/*****************************************************************************
**  Functions
******************************************************************************/

/*****************************************************************************
**   Local uinput helper functions
******************************************************************************/
int send_event (int fd, uint16_t type, uint16_t code, int32_t value)
{
    struct uinput_event event;
    BTIF_TRACE_DEBUG("%s type:%u code:%u value:%d", __FUNCTION__,
        type, code, value);
    memset(&event, 0, sizeof(event));
    event.type  = type;
    event.code  = code;
    event.value = value;

    ssize_t ret;
    OSI_NO_INTR(ret = write(fd, &event, sizeof(event)));
    return (int)ret;
}

void send_key (int fd, uint16_t key, int pressed)
{
    BTIF_TRACE_DEBUG("%s fd:%d key:%u pressed:%d", __FUNCTION__,
        fd, key, pressed);

    if (fd < 0)
    {
        return;
    }

    BTIF_TRACE_IMP("AVRCP: Send key %d (%d) fd=%d", key, pressed, fd);
    send_event(fd, EV_KEY, key, pressed);
    send_event(fd, EV_SYN, SYN_REPORT, 0);
}

/************** uinput related functions **************/
int uinput_driver_check()
{
    uint32_t i;
    for (i=0; i < MAX_UINPUT_PATHS; i++)
    {
        if (access(uinput_dev_path[i], O_RDWR) == 0) {
           return 0;
        }
    }
    BTIF_TRACE_ERROR("%s ERROR: uinput device is not in the system", __FUNCTION__);
    return -1;
}

int uinput_create(char *name)
{
    struct uinput_dev dev;
    int fd, x = 0;

    for(x=0; x < MAX_UINPUT_PATHS; x++)
    {
        fd = open(uinput_dev_path[x], O_RDWR);
        if (fd < 0)
            continue;
        break;
    }
    if (x == MAX_UINPUT_PATHS) {
        BTIF_TRACE_ERROR("%s ERROR: uinput device open failed", __FUNCTION__);
        return -1;
    }
    memset(&dev, 0, sizeof(dev));
    if (name)
        strlcpy(dev.name, name, UINPUT_MAX_NAME_SIZE-1);

    dev.id.bustype = BUS_BLUETOOTH;
    dev.id.vendor  = 0x0000;
    dev.id.product = 0x0000;
    dev.id.version = 0x0000;

    ssize_t ret;
    OSI_NO_INTR(ret = write(fd, &dev, sizeof(dev)));
    if (ret < 0) {
        BTIF_TRACE_ERROR("%s Unable to write device information", __FUNCTION__);
        close(fd);
        return -1;
    }

    ioctl(fd, UI_SET_EVBIT, EV_KEY);
    ioctl(fd, UI_SET_EVBIT, EV_REL);
    ioctl(fd, UI_SET_EVBIT, EV_SYN);

    for (x = 0; key_map[x].name != NULL; x++)
        ioctl(fd, UI_SET_KEYBIT, key_map[x].mapped_id);

    if (ioctl(fd, UI_DEV_CREATE, NULL) < 0) {
        BTIF_TRACE_ERROR("%s Unable to create uinput device", __FUNCTION__);
        close(fd);
        return -1;
    }
    BTIF_TRACE_IMP("AVRCP: input device opened.. Delay 30 ms");
    sleep_ms(30);
    return fd;
}

int init_uinput (void)
{
    char *name = "AVRCP";

    BTIF_TRACE_DEBUG("%s", __FUNCTION__);
    if (uinput_fd < 0)
    {
        BTIF_TRACE_DEBUG("Create Uinput device");
        uinput_fd = uinput_create(name);
        if (uinput_fd < 0) {
            BTIF_TRACE_ERROR("%s AVRCP: Failed to initialize uinput for %s (%d)",
                            __FUNCTION__, name, uinput_fd);
        }
        else
        {
            BTIF_TRACE_DEBUG("%s AVRCP: Initialized uinput for %s (fd=%d)",
                            __FUNCTION__, name, uinput_fd);
        }
    }
    return uinput_fd;
}

void close_uinput (void)
{
    //Dont close uinput untill all connections are teared down
    // Since we support Dual AVRCP conn now.
    BTIF_TRACE_DEBUG("%s", __FUNCTION__);
    if (uinput_fd > 0) {
        ioctl(uinput_fd, UI_DEV_DESTROY);

        close(uinput_fd);
        uinput_fd = -1;
    }
}


#if (AVRC_CTLR_INCLUDED == TRUE)
void rc_cleanup_sent_cmd (void *p_data)
{
    BTIF_TRACE_DEBUG("%s", __FUNCTION__);

}

void handle_rc_ctrl_features(int index)
{
    if ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)||
       ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCCT)&&
        (btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL)))
    {
        bt_bdaddr_t rc_addr;
        int rc_features = 0;
        bdcpy(rc_addr.address, btif_rc_cb[index].rc_addr);

        if ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL)&&
             (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCCT))
        {
            rc_features |= BTRC_FEAT_ABSOLUTE_VOLUME;
        }
        if ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_METADATA)&&
            (btif_rc_cb[index].rc_features & BTA_AV_FEAT_VENDOR)&&
            (btif_rc_cb[index].rc_features_processed != TRUE))
        {
            rc_features |= BTRC_FEAT_METADATA;
            /* Mark rc features processed to avoid repeating
             * the AVRCP procedure every time on receiving this
             * update.
             */
            if ((btif_rc_cb[index].rc_features_processed == FALSE) &&
                btif_av_is_sink_enabled())
            {
                btif_rc_cb[index].rc_features_processed = TRUE;
                getcapabilities_cmd (AVRC_CAP_COMPANY_ID);
            }
        }
        BTIF_TRACE_DEBUG("%s Update rc features to CTRL %d", __FUNCTION__, rc_features);
        if (btif_av_is_sink_enabled()) {
            HAL_CBACK(bt_rc_ctrl_callbacks, getrcfeatures_cb, &rc_addr, rc_features);
        }
    }
}
#endif

void handle_rc_features(int index)
{
    if (bt_rc_callbacks != NULL)
    {
        btrc_remote_features_t rc_features = BTRC_FEAT_NONE;
        bt_bdaddr_t rc_addr;
        bt_bdaddr_t avdtp_addr;
        bdstr_t addr1, addr2;

        bdcpy(rc_addr.address, btif_rc_cb[index].rc_addr);
        avdtp_addr = btif_av_get_addr(btif_rc_cb[index].rc_addr);

        BTIF_TRACE_DEBUG("AVDTP Address : %s AVCTP address: %s",
                         bdaddr_to_string(&avdtp_addr, addr1, sizeof(bdstr_t)),
                         bdaddr_to_string(&rc_addr, addr2, sizeof(bdstr_t)) );

        if (interop_match_addr(INTEROP_DISABLE_ABSOLUTE_VOLUME, &rc_addr)
                || absolute_volume_disabled()
                || bdcmp(avdtp_addr.address, rc_addr.address))
            btif_rc_cb[index].rc_features &= ~BTA_AV_FEAT_ADV_CTRL;

        if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_BROWSE)
        {
            rc_features |= BTRC_FEAT_BROWSE;
        }
        if ( (btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL) &&
            (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG))
        {
            rc_features |= BTRC_FEAT_ABSOLUTE_VOLUME;
        }
        if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_METADATA)
        {
            rc_features |= BTRC_FEAT_METADATA;
        }
        if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_AVRC_UI_UPDATE)
        {
            rc_features |= BTRC_FEAT_AVRC_UI_UPDATE;
        }
        BTIF_TRACE_IMP("%s: rc_features=0x%x", __FUNCTION__, rc_features);
        if (btif_rc_cb[index].rc_connected)
        {
            BTIF_TRACE_IMP("%s: update App on supported features", __FUNCTION__);
            HAL_CBACK(bt_rc_callbacks, remote_features_cb, &rc_addr, rc_features)
        }
        else
        {
            BTIF_TRACE_IMP("%s: skipping feature update to App", __FUNCTION__);
        }
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
        BTIF_TRACE_DEBUG("Checking for feature flags in btif_rc_handler with label %d",
                         btif_rc_cb[index].rc_vol_label);
        // Register for volume change on connect
        if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL &&
            btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)
        {
            rc_transaction_t *p_transaction=NULL;
            bt_status_t status = BT_STATUS_NOT_READY;
            if (MAX_LABEL == btif_rc_cb[index].rc_vol_label)
            {
                status=get_transaction(&p_transaction);
            }
            else
            {
                p_transaction=get_transaction_by_lbl(btif_rc_cb[index].rc_vol_label);
                if (NULL != p_transaction)
                {
                    BTIF_TRACE_DEBUG("register_volumechange already in progress for label %d",
                    btif_rc_cb[index].rc_vol_label);
                    return;
                }
                else
                    status = get_transaction(&p_transaction);
            }

            if (BT_STATUS_SUCCESS == status && NULL!=p_transaction)
            {
                btif_rc_cb[index].rc_vol_label=p_transaction->lbl;
                register_volumechange(btif_rc_cb[index].rc_vol_label, index);
            }
        }
#endif
    }
}

/***************************************************************************
 *  Function       btif_rc_init_txn_label_queue
 *
 *  - Argument:    index of rc control block
 *
 *  - Description: initializes the txn label queues for the rc index
 *
 ***************************************************************************/
void btif_rc_init_txn_label_queue(int index)
{
    int j;
    for (j = 0; j < MAX_CMD_QUEUE_LEN; j++)
    {
        btif_rc_cb[index].rc_pdu_info[j].front = 0;
        btif_rc_cb[index].rc_pdu_info[j].size = 0;
        btif_rc_cb[index].rc_pdu_info[j].rear = MAX_TRANSACTIONS_PER_SESSION - 1;
    }
}

/***************************************************************************
 *  Function       btif_rc_get_connection_state
 *
 *  - Argument:    none
 *
 *  - Description: Return true if any RC is in connected state
 *
 ***************************************************************************/
static BOOLEAN btif_rc_get_connection_state()
{
    int clients;

    for (clients = 0; clients < btif_max_rc_clients; clients++)
    {
        if (btif_rc_cb[clients].rc_connected == TRUE)
        {
            return TRUE;
        }
    }
    return FALSE;
}

/***************************************************************************
 *  Function       btif_rc_get_valid_idx
 *
 *  - Argument:    none
 *
 *  - Description: Gets the index which is ready for new connection
 *
 ***************************************************************************/
static int btif_rc_get_valid_idx()
{
    int i;
    for (i = 0; i < btif_max_rc_clients; i++)
    {
        if (!(btif_rc_cb[i].rc_connected))
            break;
    }
    return i;
}

/***************************************************************************
 *  Function       btif_rc_get_idx_by_rc_handle
 *
 *  - Argument:    rc handle
 *
 *  - Description: Gets the RC handle index of matching handle
 *
 ***************************************************************************/
static UINT8 btif_rc_get_idx_by_rc_handle(UINT8 rc_handle)
{
    UINT8 i;

    for (i = 0; i < btif_max_rc_clients; i++)
    {
        if (btif_rc_cb[i].rc_handle == rc_handle)
            break;
    }
    return i;
}

/* Get the address of device on which PLAY command came
* This address will be used in AV IF layer to determine
* On which device to START playback. */
/***************************************************************************
 *  Function       btif_rc_get_playing_device
 *
 *  - Argument:    bd_addr
 *
 *  - Description: Copies the BD address of current playing device
 *
 ***************************************************************************/
void btif_rc_get_playing_device(BD_ADDR address)
{
    int i;
    for (i = 0; i < btif_max_rc_clients; i++)
    {
        if (btif_rc_cb[i].rc_play_processed)
        {
            //copy bd address
            bdcpy(address, btif_rc_cb[i].rc_addr);
        }
    }
}

/* Reset the Play trigger, once the AVDTP START is
* sent, called from AV IF layer. */
/***************************************************************************
 *  Function       btif_rc_clear_playing_state
 *
 *  - Argument:    BOOLEAN
 *
 *  - Description: Clears the PLAY processed.rc_play_processed denotes
 *                 play command has been processed for this device.
 *
 ***************************************************************************/
void btif_rc_clear_playing_state(BOOLEAN state)
{
    int i;
    for (i = 0; i < btif_max_rc_clients; i++)
    {
        if (btif_rc_cb[i].rc_play_processed)
        {
            btif_rc_cb[i].rc_play_processed = state;
        }
    }
}

/***************************************************************************
 *  Function       btif_rc_clear_priority
 *
 *  - Argument:    Device address
 *
 *  - Description: Clears the priority information for the device
 *                 This can be used while AV disconnection for the device.
 *                 Setting of rc_play_processed flag could have been avoided
 *                 looking at the stream state, but it might still leave some
 *                 corner case of audio suspending just before the play takes
 *                 effect.
 ***************************************************************************/
void btif_rc_clear_priority(BD_ADDR address)
{
    int index;

    index = btif_rc_get_idx_by_addr(address);
    if(index < btif_max_rc_clients)
    {
        btif_rc_cb[index].rc_play_processed = FALSE;
    }
}

/***************************************************************************
 *  Function       handle_rc_connect
 *
 *  - Argument:    tBTA_AV_RC_OPEN  RC open data structure
 *
 *  - Description: RC connection event handler
 *
 ***************************************************************************/
void handle_rc_connect (tBTA_AV_RC_OPEN *p_rc_open)
{
    BTIF_TRACE_IMP("%s: rc_handle: %d", __FUNCTION__, p_rc_open->rc_handle);
    bt_status_t result = BT_STATUS_SUCCESS;
    bt_bdaddr_t rc_addr;
    int index;
    if(p_rc_open->status == BTA_AV_SUCCESS)
    {
        //Check if already some RC is connected
        /*Now we can have two RC connections
        * Check should be here about 3rd connection too.
        * Get the free or MAX index. Max index should be rejected. */
        index = btif_rc_get_valid_idx();
        if (index == btif_max_rc_clients)
        {
            /*Reached Max, this connection must be rejected*/
            BTIF_TRACE_ERROR("RC OPEN in MAX connected state");
            BTA_AvCloseRc(p_rc_open->rc_handle);
            return;
        }
        /*Use the index for this RC connection*/
        BTIF_TRACE_DEBUG("Got RC OPEN on the index= %d", index);
        memcpy(btif_rc_cb[index].rc_addr, p_rc_open->peer_addr, sizeof(BD_ADDR));
        btif_rc_cb[index].rc_features = p_rc_open->peer_features;
        btif_rc_cb[index].rc_vol_label = MAX_LABEL;
        btif_rc_cb[index].rc_volume = MAX_VOLUME;
        btif_rc_cb[index].rc_connected = TRUE;
        btif_rc_cb[index].rc_handle = p_rc_open->rc_handle;
        btif_rc_init_txn_label_queue(index);

        if (bt_rc_callbacks)
        {
            result = uinput_driver_check();
            if(result == BT_STATUS_SUCCESS)
            {
                init_uinput();
            }
        }
        else
        {
            BTIF_TRACE_WARNING("Avrcp TG role not enabled, not initializing UInput");
        }
        bdcpy(rc_addr.address, btif_rc_cb[index].rc_addr);
        if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCCT)
        {
            HAL_CBACK(bt_rc_callbacks, connection_state_cb, TRUE, &rc_addr);
        }
        /* on locally initiated connection we will get remote features as part of connect */
        if (btif_rc_cb[index].rc_features != 0)
            handle_rc_features(index);
        BTIF_TRACE_DEBUG(" handle_rc_connect features %d ",btif_rc_cb[index].rc_features);
#if (AVRC_CTLR_INCLUDED == TRUE)
        btif_rc_cb[index].rc_playing_uid = RC_INVALID_TRACK_ID;
        bdcpy(rc_addr.address, btif_rc_cb[index].rc_addr);
        if (bt_rc_ctrl_callbacks != NULL)
        {
            HAL_CBACK(bt_rc_ctrl_callbacks, connection_state_cb, TRUE, &rc_addr);
        }
        /* report connection state if remote device is AVRCP target */
        if ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)||
           ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCCT)&&
            (btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL)))
        {
            handle_rc_ctrl_features(index);
        }
#endif
        /* on locally initiated connection we will get remote features as part of connect
        Delay this update till connection update reaches Apps*/
    }
    else
    {
        BTIF_TRACE_ERROR("%s Connect failed with error code: %d",
            __FUNCTION__, p_rc_open->status);
    }
}

/***************************************************************************
 *  Function       handle_rc_disconnect
 *
 *  - Argument:    tBTA_AV_RC_CLOSE     RC close data structure
 *
 *  - Description: RC disconnection event handler
 *
 ***************************************************************************/
void handle_rc_disconnect (tBTA_AV_RC_CLOSE *p_rc_close)
{
    bt_bdaddr_t rc_addr;
    tBTA_AV_FEAT features;
    UINT8 index;
    BOOLEAN is_connected = 0;

    BTIF_TRACE_IMP("%s: rc_handle: %d", __FUNCTION__, p_rc_close->rc_handle);

    index = btif_rc_get_idx_by_rc_handle(p_rc_close->rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("Got disconnect of unknown device");
        return;
    }
    if ((p_rc_close->rc_handle != btif_rc_cb[index].rc_handle)
        && (bdcmp(btif_rc_cb[index].rc_addr, p_rc_close->peer_addr)))
    {
        BTIF_TRACE_ERROR("Got disconnect of unknown device");
        return;
    }
    btif_rc_cb[index].rc_handle = BTIF_RC_HANDLE_NONE;
    btif_rc_cb[index].rc_connected = FALSE;
    bdcpy(rc_addr.address, btif_rc_cb[index].rc_addr);
    memset(btif_rc_cb[index].rc_addr, 0, sizeof(BD_ADDR));
    memset(btif_rc_cb[index].rc_notif, 0, sizeof(btif_rc_cb[index].rc_notif));
    features = btif_rc_cb[index].rc_features;
    btif_rc_cb[index].rc_features = 0;
    btif_rc_cb[index].rc_vol_label = MAX_LABEL;
    btif_rc_cb[index].rc_volume = MAX_VOLUME;
    btif_rc_cb[index].rc_play_processed = FALSE;
    btif_rc_cb[index].rc_pending_play = FALSE;
    btif_rc_init_txn_label_queue(index);

    //CLose Uinput only when all RCs are disconnected
    is_connected = btif_rc_get_connection_state();
    BTIF_TRACE_DEBUG("RC connected : %d", is_connected);
	if (is_connected != TRUE && device.lbllock_destroyed != TRUE)
    {
        BTIF_TRACE_DEBUG("Clear UINPUT and transactions when zero RC left");
        init_all_transactions();
        close_uinput();
    }
    if (!bdcmp(bd_null, rc_addr.address))
    {
        BTIF_TRACE_DEBUG("Cleanup already done");
        return;
    }
#if (AVRC_CTLR_INCLUDED == TRUE)
    /* report connection state if device is AVRCP target */
    if (bt_rc_ctrl_callbacks != NULL)
   {
        HAL_CBACK(bt_rc_ctrl_callbacks, connection_state_cb, FALSE, &rc_addr);
   }
#endif
    if (features & BTA_AV_FEAT_RCCT)
    {
        HAL_CBACK(bt_rc_callbacks, connection_state_cb, FALSE, &rc_addr);
    }
}

/***************************************************************************
 *  Function       handle_rc_passthrough_cmd
 *
 *  - Argument:    tBTA_AV_RC rc_id   remote control command ID
 *                 tBTA_AV_STATE key_state status of key press
 *
 *  - Description: Remote control command handler
 *
 ***************************************************************************/

/* Rules: Only currenlty playing device's Passthrough commands
* will be entertained.
* While playing on Dev 1, if Dev2 sends Play, just respond it
* without passing it to APP and in parallel start a protocol
* suspend/pause the playback on DEV1 and Start on DEV2
* Making sure that music is not paused and transfer happens seamless. */
void handle_rc_passthrough_cmd ( tBTA_AV_REMOTE_CMD *p_remote_cmd)
{
    const char *status;
    int pressed, i;
    UINT8 index;
    BD_ADDR address;
    bt_bdaddr_t remote_address;
    BOOLEAN ignore_play_processed = FALSE;

    if (p_remote_cmd == NULL)
        return;

    index = btif_rc_get_idx_by_rc_handle(p_remote_cmd->rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("Passthrough on invalid index");
        return;
    }
    /* Multicast: Passthru command on AVRCP only device when connected
     * to other A2DP devices, ignore it.
     */
    if (btif_av_is_connected() && !btif_av_is_device_connected(btif_rc_cb[index].rc_addr))
    {
        BTIF_TRACE_ERROR("Passthrough on AVRCP only device: Ignore..");
        return;
    }

    /* Trigger DUAL Handoff when support single streaming */
    if (btif_av_is_playing() &&
        (btif_av_get_multicast_state() == FALSE))
    {
        /*compare the bd addr of current playing dev and this dev*/
        btif_get_latest_playing_device(address);
        if (bdcmp(btif_rc_cb[index].rc_addr, address) == 0)
        {
            APPL_TRACE_WARNING("Passthrough on the playing device");
            if ((p_remote_cmd->rc_id == BTA_AV_RC_PLAY) &&
                (p_remote_cmd->key_state == AVRC_STATE_PRESS))
            {
                APPL_TRACE_WARNING("Play again");
                ignore_play_processed = TRUE;
            }
        }
        else
        {
            BTIF_TRACE_DEBUG("Passthrough command on other device");
            if (p_remote_cmd->rc_id == BTA_AV_RC_PLAY)
            {
                if (btif_av_is_device_connected(btif_rc_cb[index].rc_addr))
                {
                    /* Trigger suspend on currently playing device
                     * Allow the Play to be sent to Music player to
                     * address Play during Pause(Local/DUT initiated)
                     * but SUSPEND not triggered by Audio module.
                     */
                    if (p_remote_cmd->key_state == AVRC_STATE_PRESS)
                    {
                        BTIF_TRACE_DEBUG("Trigger dual handoff for this play command");
                        btif_rc_cb[index].rc_play_processed = TRUE;
                        btif_av_trigger_dual_handoff(TRUE, btif_rc_cb[index].rc_addr);
                    }
                }
                else
                {
                    APPL_TRACE_WARNING("%s: Command Invalid on %d", __FUNCTION__, index);
                    return;
                }
            }
            else
            {
                APPL_TRACE_WARNING("%s:Ignore all Passthrough on %d", __FUNCTION__, index);
                return;
            }
        }
    }
    BTIF_TRACE_DEBUG("%s: p_remote_cmd->rc_id=%d", __FUNCTION__, p_remote_cmd->rc_id);

    /* If AVRC is open and peer sends PLAY but there is no AVDT, then we queue-up this PLAY */
    if (p_remote_cmd)
    {
        /* queue AVRC PLAY if GAVDTP Open notification to app is pending (2 second timer) */
        if ((p_remote_cmd->rc_id == BTA_AV_RC_PLAY) && (!btif_av_is_connected()))
        {
            if (p_remote_cmd->key_state == AVRC_STATE_PRESS)
            {
                APPL_TRACE_WARNING("%s: AVDT not open, queuing the PLAY command", __FUNCTION__);
                btif_rc_cb[index].rc_pending_play = TRUE;
            }
            return;
        }

        if ((p_remote_cmd->rc_id == BTA_AV_RC_PAUSE) && (btif_rc_cb[index].rc_pending_play))
        {
            APPL_TRACE_WARNING("%s: Clear the pending PLAY on PAUSE received", __FUNCTION__);
            btif_rc_cb[index].rc_pending_play = FALSE;
            return;
        }
        if ((p_remote_cmd->rc_id == BTA_AV_RC_VOL_UP)||(p_remote_cmd->rc_id == BTA_AV_RC_VOL_DOWN))
            return; // this command is not to be sent to UINPUT, only needed for PTS
    }

    if ((p_remote_cmd->rc_id == BTA_AV_RC_STOP) && (!btif_av_stream_started_ready()))
    {
        APPL_TRACE_WARNING("%s: Stream suspended, ignore STOP cmd",__FUNCTION__);
        return;
    }
    if(!btif_av_is_connected())
    {
        APPL_TRACE_WARNING("%s: AVDT not open, discarding pass-through command: %d",
                                                        __FUNCTION__, p_remote_cmd->rc_id);
        return;
    }

    if (p_remote_cmd->key_state == AVRC_STATE_RELEASE) {
        status = "released";
        pressed = 0;
    }
    else
    {
        status = "pressed";
        pressed = 1;
    }

    if (p_remote_cmd->rc_id == BTA_AV_RC_FAST_FOR || p_remote_cmd->rc_id == BTA_AV_RC_REWIND) {
        bdcpy(remote_address.address, btif_rc_cb[index].rc_addr);
        HAL_CBACK(bt_rc_callbacks, passthrough_cmd_cb, p_remote_cmd->rc_id, pressed, &remote_address);
        return;
    }
    /*Update the device on which PLAY is issued*/
    if (p_remote_cmd->rc_id == BTA_AV_RC_PLAY)
    {
        BTIF_TRACE_DEBUG("PLAY command on the Index: = %d", index);
        if (p_remote_cmd->key_state == AVRC_STATE_PRESS && !ignore_play_processed)
            btif_rc_cb[index].rc_play_processed = TRUE;
    }
    for (i = 0; key_map[i].name != NULL; i++) {
        if (p_remote_cmd->rc_id == key_map[i].avrcp) {
            BTIF_TRACE_DEBUG("%s: %s %s", __FUNCTION__, key_map[i].name, status);

           /* MusicPlayer uses a long_press_timeout of 1 second for PLAYPAUSE button
            * and maps that to autoshuffle. So if for some reason release for PLAY/PAUSE
            * comes 1 second after the press, the MediaPlayer UI goes into a bad state.
            * The reason for the delay could be sniff mode exit or some AVDTP procedure etc.
            * The fix is to generate a release right after the press and drown the 'actual'
            * release.
            */
            if ((key_map[i].release_quirk == 1) && (pressed == 0))
            {
                BTIF_TRACE_DEBUG("%s: AVRC %s Release Faked earlier, drowned now",
                                  __FUNCTION__, key_map[i].name);
                return;
            }
            send_key(uinput_fd, key_map[i].mapped_id, pressed);
            if ((key_map[i].release_quirk == 1) && (pressed == 1))
            {
                sleep_ms(30);
                BTIF_TRACE_DEBUG("%s: AVRC %s Release quirk enabled, send release now",
                                  __FUNCTION__, key_map[i].name);
                send_key(uinput_fd, key_map[i].mapped_id, 0);
            }
            break;
        }
    }

    if (key_map[i].name == NULL)
        BTIF_TRACE_ERROR("%s AVRCP: unknown button 0x%02X %s", __FUNCTION__,
                        p_remote_cmd->rc_id, status);
}

/***************************************************************************
 *  Function       btif_rc_send_pause_command
 *
 *  - Argument:    None
 *
 *  - Description: Sends PAUSE key event to Upper layer.
 *
 ***************************************************************************/
void btif_rc_send_pause_command()
{
    int rc_id;

    rc_id = BTA_AV_RC_PAUSE;
    BTIF_TRACE_DEBUG("Send Pause to music if playing is remotely disconnected");

    send_key(uinput_fd, KEY_PAUSECD, 1);
    sleep_ms(30); // 30ms
    send_key(uinput_fd, KEY_PAUSECD, 0);
}

/***************************************************************************
 *  Function       handle_rc_passthrough_rsp
 *
 *  - Argument:    tBTA_AV_REMOTE_RSP passthrough command response
 *
 *  - Description: Remote control passthrough response handler
 *
 ***************************************************************************/
void handle_rc_passthrough_rsp ( tBTA_AV_REMOTE_RSP *p_remote_rsp)
{
#if (AVRC_CTLR_INCLUDED == TRUE)
    const char *status;
    int index = BTIF_RC_DEFAULT_INDEX; // 0th index is RC
    if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)
    {
        int key_state;
        if (p_remote_rsp->key_state == AVRC_STATE_RELEASE)
        {
            status = "released";
            key_state = 1;
        }
        else
        {
            status = "pressed";
            key_state = 0;
        }

        BTIF_TRACE_DEBUG("%s: rc_id=%d status=%s", __FUNCTION__, p_remote_rsp->rc_id, status);

        release_transaction(p_remote_rsp->label);
        if (bt_rc_ctrl_callbacks != NULL) {
            HAL_CBACK(bt_rc_ctrl_callbacks, passthrough_rsp_cb, p_remote_rsp->rc_id, key_state);
        }
    }
    else
    {
        BTIF_TRACE_ERROR("%s DUT does not support AVRCP controller role", __FUNCTION__);
    }
#else
    BTIF_TRACE_ERROR("%s AVRCP controller role is not enabled", __FUNCTION__);
#endif
}

/***************************************************************************
 *  Function       handle_rc_vendorunique_rsp
 *
 *  - Argument:    tBTA_AV_REMOTE_RSP  command response
 *
 *  - Description: Remote control vendor unique response handler
 *
 ***************************************************************************/
void handle_rc_vendorunique_rsp ( tBTA_AV_REMOTE_RSP *p_remote_rsp)
{
#if (AVRC_CTLR_INCLUDED == TRUE)
    const char *status;
    UINT8 vendor_id = 0;
    int index = BTIF_RC_DEFAULT_INDEX; // 0th index is RC
    if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)
    {
        int key_state;
        if (p_remote_rsp->key_state == AVRC_STATE_RELEASE)
        {
            status = "released";
            key_state = 1;
        }
        else
        {
            status = "pressed";
            key_state = 0;
        }

        if (p_remote_rsp->len > 0)
        {
            if (p_remote_rsp->len >= AVRC_PASS_THRU_GROUP_LEN)
                vendor_id = p_remote_rsp->p_data[AVRC_PASS_THRU_GROUP_LEN -1];
            osi_free_and_reset((void **)&p_remote_rsp->p_data);
        }
        BTIF_TRACE_DEBUG("%s: vendor_id=%d status=%s", __FUNCTION__, vendor_id, status);

        release_transaction(p_remote_rsp->label);
        HAL_CBACK(bt_rc_ctrl_callbacks, groupnavigation_rsp_cb, vendor_id, key_state);
    }
    else
    {
        BTIF_TRACE_ERROR("%s Remote does not support AVRCP TG role", __FUNCTION__);
    }
#else
    BTIF_TRACE_ERROR("%s AVRCP controller role is not enabled", __FUNCTION__);
#endif
}

void handle_uid_changed_notification(tBTA_AV_META_MSG *pmeta_msg, tAVRC_COMMAND *pavrc_command)
{
    tAVRC_RESPONSE avrc_rsp = {0};
    avrc_rsp.rsp.pdu = pavrc_command->pdu;
    avrc_rsp.rsp.status = AVRC_STS_NO_ERROR;
    avrc_rsp.rsp.opcode = pavrc_command->cmd.opcode;

    avrc_rsp.reg_notif.event_id = pavrc_command->reg_notif.event_id;
    avrc_rsp.reg_notif.param.uid_counter = 0;

    send_metamsg_rsp(pmeta_msg->rc_handle, pmeta_msg->label, AVRC_RSP_INTERIM, &avrc_rsp);
    send_metamsg_rsp(pmeta_msg->rc_handle, pmeta_msg->label, AVRC_RSP_CHANGED, &avrc_rsp);

}

/***************************************************************************
 *  Function       handle_rc_metamsg_cmd
 *
 *  - Argument:    tBTA_AV_VENDOR Structure containing the received
 *                          metamsg command
 *
 *  - Description: Remote control metamsg command handler (AVRCP 1.3)
 *
 ***************************************************************************/
void handle_rc_metamsg_cmd (tBTA_AV_META_MSG *pmeta_msg)
{
    /* Parse the metamsg command and pass it on to BTL-IFS */
    UINT8             scratch_buf[512] = {0};
    tAVRC_COMMAND    avrc_command = {0};
    tAVRC_STS status;
    UINT8 index;

    //Get the index of RC
    index = btif_rc_get_idx_by_rc_handle(pmeta_msg->rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: Invalid RC index", __FUNCTION__);
        return;
    }

    BTIF_TRACE_EVENT("+ %s", __FUNCTION__);

    if (pmeta_msg->p_msg->hdr.opcode != AVRC_OP_VENDOR)
    {
        BTIF_TRACE_WARNING("Invalid opcode: %x", pmeta_msg->p_msg->hdr.opcode);
        return;
    }
    if (pmeta_msg->len < 3)
    {
        BTIF_TRACE_WARNING("Invalid length.Opcode: 0x%x, len: 0x%x", pmeta_msg->p_msg->hdr.opcode,
            pmeta_msg->len);
        return;
    }

    if (pmeta_msg->code >= AVRC_RSP_NOT_IMPL)
    {
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
{
     rc_transaction_t *transaction=NULL;
     transaction=get_transaction_by_lbl(pmeta_msg->label);
     if (NULL!=transaction)
     {
        handle_rc_metamsg_rsp(pmeta_msg);
     }
     else
     {
         BTIF_TRACE_DEBUG("%s:Discard vendor dependent rsp. code: %d label:%d.",
             __FUNCTION__, pmeta_msg->code, pmeta_msg->label);
     }
     return;
}
#else
{
        BTIF_TRACE_DEBUG("%s:Received vendor dependent rsp. code: %d len: %d. Not processing it.",
            __FUNCTION__, pmeta_msg->code, pmeta_msg->len);
        return;
}
#endif
      }

    status=AVRC_ParsCommand(pmeta_msg->p_msg, &avrc_command, scratch_buf, sizeof(scratch_buf));
    BTIF_TRACE_DEBUG("%s Received vendor command.code,PDU and label: %d, %d,%d",
                     __FUNCTION__, pmeta_msg->code, avrc_command.cmd.pdu, pmeta_msg->label);

    if (status != AVRC_STS_NO_ERROR)
    {
        /* return error */
        BTIF_TRACE_WARNING("%s: Error in parsing received metamsg command. status: 0x%02x",
            __FUNCTION__, status);
        send_reject_response(pmeta_msg->rc_handle, pmeta_msg->label, avrc_command.pdu, status);
    }
    else
    {
        /* if RegisterNotification, add it to our registered queue */

        if (avrc_command.cmd.pdu == AVRC_PDU_REGISTER_NOTIFICATION)
        {
            UINT8 event_id = avrc_command.reg_notif.event_id;
            BTIF_TRACE_EVENT("%s:New register notification received.event_id:%s,label:0x%x,code:%x",
            __FUNCTION__,dump_rc_notification_event_id(event_id), pmeta_msg->label,pmeta_msg->code);
            btif_rc_cb[index].rc_notif[event_id-1].bNotify = TRUE;
            btif_rc_cb[index].rc_notif[event_id-1].label = pmeta_msg->label;

            if (event_id == AVRC_EVT_UIDS_CHANGE)
            {
                handle_uid_changed_notification(pmeta_msg, &avrc_command);
                return;
            }

        }

        BTIF_TRACE_EVENT("%s: Passing received metamsg command to app. pdu: %s",
            __FUNCTION__, dump_rc_pdu(avrc_command.cmd.pdu));

        /* Since handle_rc_metamsg_cmd() itself is called from
            *btif context, no context switching is required. Invoke
            * btif_rc_upstreams_evt directly from here. */
        btif_rc_upstreams_evt((uint16_t)avrc_command.cmd.pdu, &avrc_command, pmeta_msg->code,
                               pmeta_msg->label, index);
    }
}

/************************************************************************************
*  Function                 handle_get_folder_item_mediaplyerlist_cmd
*
* - Argument:               tBTA_AV_BROWSE_MSG  structure containing  the received
*                           browse message
*                           tAVRC_COMMAND       structure containing the commands
*                           to be updated
*                           UINT8 event,        variable having value of event.
*
*  - Description:           Handler for get media player list command
*
************************************************************************************/
UINT8 handle_get_folder_item_mediaplyerlist_cmd (tBTA_AV_BROWSE_MSG *pbrowse_msg,
                                                        tAVRC_COMMAND *cmd, UINT8 *event)
{
    UINT8 *p_length, *start_item, *end_item;
    UINT8 length, xx;
    *event = pbrowse_msg->p_msg->browse.p_browse_data[0] ;
    cmd->get_items.pdu = *event;
    //Check length
    p_length = &pbrowse_msg->p_msg->browse.p_browse_data[1];
    BE_STREAM_TO_UINT16(length, p_length);
    if (length < 10)
    {
        BTIF_TRACE_ERROR("GET_FOLDER_ITEMS: length error: =%d",length);
        return TRUE;
    }
    else
    {
        start_item = &pbrowse_msg->p_msg->browse.p_browse_data[4];
        BE_STREAM_TO_UINT32(cmd->get_items.start_item ,start_item);
        BTIF_TRACE_EVENT("pbrowse_msg start_item :%x",cmd->get_items.start_item);
        end_item  =  &pbrowse_msg->p_msg->browse.p_browse_data[8];
        BE_STREAM_TO_UINT32(cmd->get_items.end_item,end_item);
        BTIF_TRACE_EVENT("pbrowse_msg start_item :%x",cmd->get_items.end_item);
        cmd->get_items.attr_count = 0xff; /* in MediaPlayerList we don't have attr_id */
        //Update OPCODE
        cmd->get_items.opcode  = AVRC_OP_BROWSE;
        cmd->get_items.scope   = pbrowse_msg->p_msg->browse.p_browse_data[3] ;
        cmd->get_items.status = AVRC_STS_NO_ERROR ;
        for (xx = 0; xx < MAX_ELEM_ATTR_SIZE ; xx++)
        {
            cmd->get_items.attrs[xx] = 0;
        }
        return FALSE;
    }
}

/************************************************************************************
*  Function                 handle_get_folder_item_filesystem_cmd
*
* - Argument:               tBTA_AV_BROWSE_MSG  structure containing  the received
*                           browse message
*                           tAVRC_COMMAND       structure containing the commands
*                           to be updated
*                           UINT8 event,        variable having value of event.
*
*  - Description:           Handler for get folder item command
*
************************************************************************************/
UINT8 handle_get_folder_item_filesystem_cmd (tBTA_AV_BROWSE_MSG *pbrowse_msg, tAVRC_COMMAND *cmd,
                                                 UINT8 *event)
{
    UINT8 *p_length, *start_item, *end_item, *p_data;
    UINT8 length, attr_count = 0, xx;
    *event = pbrowse_msg->p_msg->browse.p_browse_data[0] ;
    cmd->get_items.pdu = *event;
    //Check length
    p_length = &pbrowse_msg->p_msg->browse.p_browse_data[1];
    BE_STREAM_TO_UINT16(length, p_length);
    attr_count = pbrowse_msg->p_msg->browse.p_browse_data[12];
    BTIF_TRACE_ERROR("GET_FOLDER_ITEMS: attr_count: =%d", attr_count);
    switch (attr_count)
    {
        case 0xff:
            if (length != 10)
            {
                BTIF_TRACE_ERROR("GET_FOLDER_ITEMS: length error: =%d", length);
                return TRUE;
            }
            break;
        default:
            if (length != ((attr_count * 4) + 10))
            {
                BTIF_TRACE_ERROR("GET_FOLDER_ITEMS: length error: =%d", length);
                return TRUE;
            }
    }

    start_item = &pbrowse_msg->p_msg->browse.p_browse_data[4];
    BE_STREAM_TO_UINT32(cmd->get_items.start_item ,start_item);
    BTIF_TRACE_EVENT("pbrowse_msg start_item :%x",cmd->get_items.start_item);
    end_item  =  &pbrowse_msg->p_msg->browse.p_browse_data[8];
    BE_STREAM_TO_UINT32(cmd->get_items.end_item,end_item);
    BTIF_TRACE_EVENT("pbrowse_msg start_item :%x",cmd->get_items.end_item);
    cmd->get_items.attr_count = attr_count;
    if (attr_count == 0)
    {
        for (xx = 0; xx < MAX_ELEM_ATTR_SIZE; xx++)
        {
            cmd->get_items.attrs[xx] = xx + 1;
        }
    }
    else if (attr_count == 0xff) /* no attribute requested */
    {
        BTIF_TRACE_DEBUG("No attribute requested");
    }
    else if (attr_count <= AVRC_MAX_ELEM_ATTR_SIZE)
    {
        p_data = &pbrowse_msg->p_msg->browse.p_browse_data[13];
        for (xx = 0; xx < attr_count; xx++)
            BE_STREAM_TO_UINT32(cmd->get_items.attrs[xx], p_data)
    }
    //Update OPCODE
    cmd->get_items.opcode  = AVRC_OP_BROWSE;
    cmd->get_items.scope   = pbrowse_msg->p_msg->browse.p_browse_data[3] ;
    cmd->get_items.status = AVRC_STS_NO_ERROR ;
    return FALSE;
}

/************************************************************************************
*  Function                 handle_rc_browsemsg_cmd
*
* - Argument:               tBTA_AV_BROWSE_MSG  structure containing  the recieved
*                           browse message
*
*  - Description:           Remote Control browse message handler
*
************************************************************************************/
void handle_rc_browsemsg_cmd (tBTA_AV_BROWSE_MSG *pbrowse_msg)
{
    UINT8 event;
    UINT16 length;
    tAVRC_COMMAND cmd;
    UINT8 *p_length, *p_data;
    tAVRC_RESPONSE avrc_rsp;
    UINT8  dropmsg = TRUE;
    UINT8 index = btif_rc_get_idx_by_rc_handle(pbrowse_msg->rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: Invalid RC index", __FUNCTION__);
        return;
    }

    BTIF_TRACE_EVENT("+ %s", __FUNCTION__);
    BTIF_TRACE_EVENT("pbrowse_msg PDU_ID :%x",pbrowse_msg->p_msg->browse.p_browse_data[0]);
    BTIF_TRACE_EVENT("pbrowse_msg length :%x",pbrowse_msg->p_msg->browse.browse_len);
    switch(pbrowse_msg->p_msg->browse.p_browse_data[0])
    {
        case AVRC_PDU_GET_FOLDER_ITEMS:
        {
            UINT8 scope = pbrowse_msg->p_msg->browse.p_browse_data[3];
            switch (scope)
            {
                case AVRC_SCOPE_PLAYER_LIST:
                    dropmsg = handle_get_folder_item_mediaplyerlist_cmd(pbrowse_msg, &cmd, &event);
                break;
                case AVRC_SCOPE_FILE_SYSTEM:
                case AVRC_SCOPE_NOW_PLAYING:
                    dropmsg = handle_get_folder_item_filesystem_cmd(pbrowse_msg, &cmd, &event);
                break;
            }
            if (dropmsg == FALSE)
            {
                btif_rc_upstreams_evt(event,&cmd,0,pbrowse_msg->label, index);
            }
        }
        break;

        case AVRC_PDU_SET_BROWSED_PLAYER:
            event  = pbrowse_msg->p_msg->browse.p_browse_data[0] ;
            cmd.br_player.pdu     = event;
            //Check for length
            p_length = &pbrowse_msg->p_msg->browse.p_browse_data[1];
            BE_STREAM_TO_UINT16(length, p_length);
            if (length != 0x0002)
            {
                BTIF_TRACE_ERROR("SET_BROWSED_PLAYERlength error: = %d", length);
            }
            else
            {
                p_length = &pbrowse_msg->p_msg->browse.p_browse_data[3];
                BE_STREAM_TO_UINT16(cmd.br_player.player_id, p_length);
                cmd.br_player.opcode = AVRC_OP_BROWSE;
                btif_rc_upstreams_evt(event, &cmd, 0, pbrowse_msg->label, index);
                dropmsg = FALSE;
            }
        break;

        case AVRC_PDU_CHANGE_PATH:
            event  = pbrowse_msg->p_msg->browse.p_browse_data[0] ;
            cmd.chg_path.pdu = event;
            p_data = &pbrowse_msg->p_msg->browse.p_browse_data[1];
            BE_STREAM_TO_UINT16(length, p_data);
            if (length != 11)
            {
                BTIF_TRACE_ERROR("CHANGE_PATH length error: = %d",length);
            }
            else
            {
                p_data = &pbrowse_msg->p_msg->browse.p_browse_data[3];
                BE_STREAM_TO_UINT16(cmd.chg_path.uid_counter, p_data);
                cmd.chg_path.direction = pbrowse_msg->p_msg->browse.p_browse_data[5];
                cmd.chg_path.opcode = AVRC_OP_BROWSE;
                cmd.chg_path.status = AVRC_STS_NO_ERROR;
                p_data = &pbrowse_msg->p_msg->browse.p_browse_data[6];
                BE_STREAM_TO_UINT64(cmd.chg_path.folder_uid, p_data);
                btif_rc_upstreams_evt(event, &cmd, 0, pbrowse_msg->label, index);
                dropmsg = FALSE;
            }
        break;

        case AVRC_PDU_GET_ITEM_ATTRIBUTES:
        {
            UINT16 packet_len;
            UINT8  num_attr, idx;
            event  = pbrowse_msg->p_msg->browse.p_browse_data[0] ;
            cmd.get_attrs.pdu = event;
            p_data = &pbrowse_msg->p_msg->browse.p_browse_data[1];
            BE_STREAM_TO_UINT16(packet_len, p_data);
            p_data = &pbrowse_msg->p_msg->browse.p_browse_data[14];
            BE_STREAM_TO_UINT8(num_attr, p_data);
            if (packet_len != ((num_attr * 4) + 12))
            {
                BTIF_TRACE_ERROR("Get Item Attributes length error: = %d",packet_len);
            }
            else
            {
                cmd.get_attrs.status = AVRC_STS_NO_ERROR;
                cmd.get_attrs.opcode = AVRC_OP_BROWSE;
                cmd.get_attrs.scope =  pbrowse_msg->p_msg->browse.p_browse_data[3];
                p_data = &pbrowse_msg->p_msg->browse.p_browse_data[4];
                BE_STREAM_TO_UINT64(cmd.get_attrs.uid, p_data);
                p_data = &pbrowse_msg->p_msg->browse.p_browse_data[12];
                BE_STREAM_TO_UINT16(cmd.get_attrs.uid_counter, p_data);
                cmd.get_attrs.attr_count = num_attr;
                if (num_attr == 0)
                {
                    /* remote requested all Attribute ID*/
                    for (idx = 0; idx < MAX_ELEM_ATTR_SIZE; idx++)
                    {
                        cmd.get_attrs.attrs[idx] = idx + 1;
                    }
                }
                else
                {
                    p_data = &pbrowse_msg->p_msg->browse.p_browse_data[15];
                    BTIF_TRACE_ERROR("GetItemAttr num_attr: = %d", cmd.get_attrs.attr_count);
                    for (idx = 0; idx < num_attr ; idx++)
                    {
                        BE_STREAM_TO_UINT32(cmd.get_attrs.attrs[idx], p_data);
                        BTIF_TRACE_ERROR("GetItemAttr attrid: = %d", cmd.get_attrs.attrs[idx]);
                    }
                }
                btif_rc_upstreams_evt(event, &cmd, 0, pbrowse_msg->label, index);
                dropmsg = FALSE;
            }
        }
        break;

        case AVRC_PDU_GET_TOTAL_NUMBER_OF_ITEMS:
           event = pbrowse_msg->p_msg->browse.p_browse_data[0];
           cmd.get_tot_item.pdu = event;
           p_data = &pbrowse_msg->p_msg->browse.p_browse_data[1];
           BE_STREAM_TO_UINT16(length, p_data);
           if (length != 1)
           {
               BTIF_TRACE_ERROR("GET_TOTAL_ITEMS length error: = %d", length);
           }
           else
           {
               p_data = &pbrowse_msg->p_msg->browse.p_browse_data[3];
               BE_STREAM_TO_UINT8(cmd.get_tot_item.scope, p_data);
               cmd.get_tot_item.opcode = AVRC_OP_BROWSE;
               cmd.get_tot_item.status = AVRC_STS_NO_ERROR;
               btif_rc_upstreams_evt(event, &cmd, 0, pbrowse_msg->label, index);
               dropmsg = FALSE;
           }
        break;

        default:
            BTIF_TRACE_ERROR("pbrowse_msg ERROR");
        break;
    }
    if (dropmsg == TRUE)
    {
        avrc_rsp.rsp.pdu    = pbrowse_msg->p_msg->browse.p_browse_data[0];
        avrc_rsp.rsp.status = AVRC_STS_BAD_CMD;
        avrc_rsp.rsp.opcode = AVRC_OP_BROWSE;
        BTIF_TRACE_ERROR("handle_rc_browsemsg_cmd: pbrowse_msg ERROR: %x", avrc_rsp.rsp.pdu);
        send_browsemsg_rsp(btif_rc_cb[index].rc_handle, pbrowse_msg->label, 0, &avrc_rsp);
    }

}


/***************************************************************************
 **
 ** Function       btif_rc_handler
 **
 ** Description    RC event handler
 **
 ***************************************************************************/
void btif_rc_handler(tBTA_AV_EVT event, tBTA_AV *p_data)
{
    UINT8 index;

    BTIF_TRACE_IMP ("%s event:%s", __FUNCTION__, dump_rc_event(event));
    switch (event)
    {
        case BTIF_AV_CLEANUP_REQ_EVT:
        {
            memset(&btif_rc_cb, 0, sizeof(btif_rc_cb_t));
            close_uinput();

            if (bt_rc_callbacks)
            {
                bt_rc_callbacks = NULL;
            }

            lbl_destroy();
        }break;

        case BTA_AV_RC_OPEN_EVT:
        {
            BTIF_TRACE_DEBUG("%s Peer_features:%x", __FUNCTION__, p_data->rc_open.peer_features);
            handle_rc_connect( &(p_data->rc_open) );
        }break;

        case BTA_AV_RC_CLOSE_EVT:
        {
            handle_rc_disconnect( &(p_data->rc_close) );
        }break;

        case BTA_AV_REMOTE_CMD_EVT:
        {
            BTIF_TRACE_DEBUG("rc_id:0x%x key_state:%d", p_data->remote_cmd.rc_id,
                               p_data->remote_cmd.key_state);
            /** In race conditions just after 2nd AVRCP is connected
             *  remote might send pass through commands, so check for
             *  Rc handle before processing pass through commands
             **/
            handle_rc_passthrough_cmd( (&p_data->remote_cmd) );
        }
        break;

#if (AVRC_CTLR_INCLUDED == TRUE)
        case BTA_AV_REMOTE_RSP_EVT:
        {
            BTIF_TRACE_DEBUG("%s RSP: rc_id:0x%x key_state:%d",
                             __FUNCTION__, p_data->remote_rsp.rc_id, p_data->remote_rsp.key_state);
            if (p_data->remote_rsp.rc_id == AVRC_ID_VENDOR)
            {
                handle_rc_vendorunique_rsp(&p_data->remote_rsp);
            }
            else
            {
                handle_rc_passthrough_rsp(&p_data->remote_rsp);
            }
        }
        break;

#endif
        case BTA_AV_RC_FEAT_EVT:
        {
            BTIF_TRACE_DEBUG("Peer_features:%x on RC handle: %d", p_data->rc_feat.peer_features,
                            p_data->rc_feat.rc_handle);
            index = btif_rc_get_idx_by_rc_handle(p_data->rc_feat.rc_handle);
            if (index == btif_max_rc_clients)
            {
                BTIF_TRACE_ERROR("%s: Invalid RC index for BTA_AV_RC_FEAT_EVT", __FUNCTION__);
                return;
            }
            btif_rc_cb[index].rc_features = p_data->rc_feat.peer_features;
            handle_rc_features(index);
#if (AVRC_CTLR_INCLUDED == TRUE)
            if ((btif_rc_cb[index].rc_connected == TRUE) && (bt_rc_ctrl_callbacks != NULL))
            {
                handle_rc_ctrl_features(index);
            }
#endif
        }
        break;

        case BTA_AV_META_MSG_EVT:
        {
            if (bt_rc_callbacks != NULL)
            {
                BTIF_TRACE_DEBUG("%s BTA_AV_META_MSG_EVT  code:%d label:%d",
                                 __FUNCTION__,
                                 p_data->meta_msg.code,
                                 p_data->meta_msg.label);
                BTIF_TRACE_DEBUG("%s company_id:0x%x len:%d handle:%d",
                                 __FUNCTION__,
                                 p_data->meta_msg.company_id,
                                 p_data->meta_msg.len,
                                 p_data->meta_msg.rc_handle);
                /* handle the metamsg command */
                handle_rc_metamsg_cmd(&(p_data->meta_msg));
                /* Free the Memory allocated for tAVRC_MSG */
            }
#if (AVRC_CTLR_INCLUDED == TRUE)
            else if ((bt_rc_callbacks == NULL)&&(bt_rc_ctrl_callbacks != NULL))
            {
                /* This is case of Sink + CT + TG(for abs vol)) */
                BTIF_TRACE_DEBUG("%s BTA_AV_META_MSG_EVT  code:%d label:%d",
                                 __FUNCTION__,
                                 p_data->meta_msg.code,
                                 p_data->meta_msg.label);
                BTIF_TRACE_DEBUG("%s company_id:0x%x len:%d handle:%d",
                                 __FUNCTION__,
                                 p_data->meta_msg.company_id,
                                 p_data->meta_msg.len,
                                 p_data->meta_msg.rc_handle);
                if ((p_data->meta_msg.code >= AVRC_RSP_NOT_IMPL)&&
                    (p_data->meta_msg.code <= AVRC_RSP_INTERIM))
                {
                    /* Its a response */
                    handle_avk_rc_metamsg_rsp(&(p_data->meta_msg));
                }
                else if (p_data->meta_msg.code <= AVRC_CMD_GEN_INQ)
                {
                    /* Its a command  */
                    handle_avk_rc_metamsg_cmd(&(p_data->meta_msg));
                }

            }
#endif
            else
            {
                BTIF_TRACE_ERROR("Neither CTRL, nor TG is up, drop meta commands");
                osi_free(p_data->meta_msg.p_msg);
            }
        }
        break;
        case BTA_AV_BROWSE_MSG_EVT:
        {
            BTIF_TRACE_DEBUG("BTA_AV_BROWSE_MSG_EVT  label:%d handle:%d", p_data->browse_msg.label,
                p_data->browse_msg.rc_handle);
            handle_rc_browsemsg_cmd(&(p_data->browse_msg));
        }
        break;
        default:
            BTIF_TRACE_DEBUG("%s Unhandled RC event : 0x%x", __FUNCTION__, event);
    }
}

/***************************************************************************
 **
 ** Function       btif_rc_get_connected_peer
 **
 ** Description    Fetches the connected headset's BD_ADDR if any
 **
 ***************************************************************************/
BOOLEAN btif_rc_get_connected_peer(BD_ADDR peer_addr)
{
    /*Find the device for which AV is not connected but RC is.*/
    int i;

    for  (i = 0; i < btif_max_rc_clients; i++)
    {
        if (btif_rc_cb[i].rc_connected == TRUE)
        {
            if (!btif_av_is_device_connected(btif_rc_cb[i].rc_addr))
            {
                bdcpy(peer_addr, btif_rc_cb[i].rc_addr);
                return TRUE;
            }
        }
    }
    return FALSE;
}

static int btif_rc_get_idx_by_addr(BD_ADDR address)
{
    int i;

    for (i = 0; i < btif_max_rc_clients; i++)
    {
        if (bdcmp(btif_rc_cb[i].rc_addr, address) == 0)
        {
            break;
        }
    }
    return i;
}

/***************************************************************************
 **
 ** Function       btif_rc_get_connected_peer_handle
 **
 ** Description    Fetches the connected headset's handle if any
 **
 ***************************************************************************/
UINT8 btif_rc_get_connected_peer_handle(BD_ADDR peer_addr)
{
    int i;
    for  (i = 0; i < btif_max_rc_clients; i++)
    {
        if ((btif_rc_cb[i].rc_connected == TRUE)
             &&(!bdcmp(peer_addr,btif_rc_cb[i].rc_addr)))
        {
            return btif_rc_cb[i].rc_handle;
        }
    }
    return BTIF_RC_HANDLE_NONE;
}

/***************************************************************************
 **
 ** Function       btif_rc_check_handle_pending_play
 **
 ** Description    Clears the queued PLAY command. if bSend is TRUE, forwards to app
 **
 ***************************************************************************/

/* clear the queued PLAY command. if bSend is TRUE, forward to app */
void btif_rc_check_handle_pending_play (BD_ADDR peer_addr, BOOLEAN bSendToApp)
{
    int index = btif_rc_get_idx_by_addr(peer_addr);

    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: Invalid RC index", __FUNCTION__);
        return;
    }
    UNUSED(peer_addr);

    BTIF_TRACE_DEBUG("%s: bSendToApp=%d", __FUNCTION__, bSendToApp);
    if (btif_rc_cb[index].rc_pending_play)
    {
        if (bSendToApp)
        {
            tBTA_AV_REMOTE_CMD remote_cmd;
            APPL_TRACE_DEBUG("%s: Sending queued PLAYED event to app", __FUNCTION__);

            memset (&remote_cmd, 0, sizeof(tBTA_AV_REMOTE_CMD));
            remote_cmd.rc_handle  = btif_rc_cb[index].rc_handle;
            remote_cmd.rc_id      = AVRC_ID_PLAY;
            remote_cmd.hdr.ctype  = AVRC_CMD_CTRL;
            remote_cmd.hdr.opcode = AVRC_OP_PASS_THRU;

            /* delay sending to app, else there is a timing issue in the framework,
             ** which causes the audio to be on th device's speaker. Delay between
             ** OPEN & RC_PLAYs
            */
            sleep_ms(200);
            /* send to app - both PRESSED & RELEASED */
            remote_cmd.key_state  = AVRC_STATE_PRESS;
            handle_rc_passthrough_cmd( &remote_cmd );

            sleep_ms(100);

            remote_cmd.key_state  = AVRC_STATE_RELEASE;
            handle_rc_passthrough_cmd( &remote_cmd );
        }
        btif_rc_cb[index].rc_pending_play = FALSE;
    }
}

/* Generic reject response */
static void send_reject_response (UINT8 rc_handle, UINT8 label, UINT8 pdu, UINT8 status)
{
    UINT8 ctype = AVRC_RSP_REJ;
    tAVRC_RESPONSE avrc_rsp;
    BT_HDR *p_msg = NULL;
    memset (&avrc_rsp, 0, sizeof(tAVRC_RESPONSE));

    avrc_rsp.rsp.opcode = opcode_from_pdu(pdu);
    avrc_rsp.rsp.pdu    = pdu;
    avrc_rsp.rsp.status = status;

    if (AVRC_STS_NO_ERROR == (status = AVRC_BldResponse(rc_handle, &avrc_rsp, &p_msg)) )
    {
        BTIF_TRACE_DEBUG("%s:Sending error notification to handle:%d. pdu:%s,status:0x%02x",
            __FUNCTION__, rc_handle, dump_rc_pdu(pdu), status);
        BTA_AvMetaRsp(rc_handle, label, ctype, p_msg);
    }
}

/***************************************************************************
 *  Function       send_metamsg_rsp
 *
 *  - Argument:
 *                  rc_handle     RC handle corresponding to the connected RC
 *                  label            Label of the RC response
 *                  code            Response type
 *                  pmetamsg_resp    Vendor response
 *
 *  - Description: Remote control metamsg response handler (AVRCP 1.3)
 *
 ***************************************************************************/
static void send_metamsg_rsp (UINT8 rc_handle, UINT8 label, tBTA_AV_CODE code,
    tAVRC_RESPONSE *pmetamsg_resp)
{
    UINT8 ctype;
    UINT8 index;

    index = btif_rc_get_idx_by_rc_handle(rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: Invalid RC index", __FUNCTION__);
        return;
    }
    if (!pmetamsg_resp)
    {
        BTIF_TRACE_WARNING("%s: Invalid response received from application", __FUNCTION__);
        return;
    }

    BTIF_TRACE_EVENT("+%s: rc_handle: %d, label: %d, code: 0x%02x, pdu: %s", __FUNCTION__,
        rc_handle, label, code, dump_rc_pdu(pmetamsg_resp->rsp.pdu));

    if (pmetamsg_resp->rsp.status != AVRC_STS_NO_ERROR)
    {
        ctype = AVRC_RSP_REJ;
    }
    else
    {
        if ( code < AVRC_RSP_NOT_IMPL)
        {
            if (code == AVRC_CMD_NOTIF)
            {
               ctype = AVRC_RSP_INTERIM;
            }
            else if (code == AVRC_CMD_STATUS)
            {
               ctype = AVRC_RSP_IMPL_STBL;
            }
            else
            {
               ctype = AVRC_RSP_ACCEPT;
            }
        }
        else
        {
            ctype = code;
        }
    }
    /* if response is for register_notification, make sure the rc has
    actually registered for this */
    if ((pmetamsg_resp->rsp.pdu == AVRC_PDU_REGISTER_NOTIFICATION) && (code == AVRC_RSP_CHANGED))
    {
        BOOLEAN bSent = FALSE;
        UINT8   event_id = pmetamsg_resp->reg_notif.event_id;
        BOOLEAN bNotify = (btif_rc_cb[index].rc_connected) && (btif_rc_cb[index].rc_notif[event_id-1].bNotify);

        /* de-register this notification for a CHANGED response */
        btif_rc_cb[index].rc_notif[event_id-1].bNotify = FALSE;
        BTIF_TRACE_DEBUG("%s rc_handle: %d. event_id: 0x%02d bNotify:%u", __FUNCTION__,
             btif_rc_cb[index].rc_handle, event_id, bNotify);
        if (bNotify)
        {
            BT_HDR *p_msg = NULL;
            tAVRC_STS status;

            if (AVRC_STS_NO_ERROR == (status = AVRC_BldResponse(btif_rc_cb[index].rc_handle,
                pmetamsg_resp, &p_msg)) )
            {
                BTIF_TRACE_DEBUG("%s Sending notification to rc_handle: %d. event_id: 0x%02d",
                     __FUNCTION__, btif_rc_cb[index].rc_handle, event_id);
                bSent = TRUE;
                BTA_AvMetaRsp(btif_rc_cb[index].rc_handle, btif_rc_cb[index].rc_notif[event_id-1].label,
                    ctype, p_msg);
            }
            else
            {
                BTIF_TRACE_WARNING("%s failed to build metamsg response. status: 0x%02x",
                    __FUNCTION__, status);
            }

        }

        if (!bSent)
        {
            BTIF_TRACE_DEBUG("%s: Notification not sent, as there are no RC connections or the \
                CT has not subscribed for event_id: %s", __FUNCTION__, dump_rc_notification_event_id(event_id));
        }
    }
    else
    {
        /* All other commands go here */

        BT_HDR *p_msg = NULL;
        tAVRC_STS status;

        status = AVRC_BldResponse(rc_handle, pmetamsg_resp, &p_msg);

        if (status == AVRC_STS_NO_ERROR)
        {
            BTA_AvMetaRsp(rc_handle, label, ctype, p_msg);
        }
        else
        {
            BTIF_TRACE_ERROR("%s: failed to build metamsg response. status: 0x%02x",
                __FUNCTION__, status);
        }
    }
}

static UINT8 opcode_from_pdu(UINT8 pdu)
{
    UINT8 opcode = 0;

    switch (pdu)
    {
    case AVRC_PDU_NEXT_GROUP:
    case AVRC_PDU_PREV_GROUP: /* pass thru */
        opcode  = AVRC_OP_PASS_THRU;
        break;

    default: /* vendor */
        opcode  = AVRC_OP_VENDOR;
        break;
    }

    return opcode;
}

/****************************************************************************
* Function         send_browsemsg_rsp
*
* Arguments    -   rc_handle     RC handle corresponding to the connected RC
*                  label         Label of the RC response
*                  code          Response type---->Not needed for Browsing
*                  pmetamsg_resp Vendor response
*
* Description  -   Remote control browse Message Rsp
*
*******************************************************************************/
static void send_browsemsg_rsp (UINT8 rc_handle, UINT8 label, tBTA_AV_CODE code,
                                                       tAVRC_RESPONSE *pbrowsemsg_resp)
{
    tAVRC_STS status;
    BT_HDR *p_msg = NULL;

    if (!pbrowsemsg_resp)
    {
        BTIF_TRACE_WARNING("%s: Invalid response received from application", __FUNCTION__);
        return;
    }

    BTIF_TRACE_EVENT("+%s:rc_handle: %d, label: %d, code: 0x%02x, pdu: %s", __FUNCTION__,\
                      rc_handle, label, code, dump_rc_pdu(pbrowsemsg_resp->rsp.pdu));
    if (pbrowsemsg_resp->rsp.status != AVRC_STS_NO_ERROR)
    {
        BTIF_TRACE_ERROR("send_browsemsg_rsp **Error**");
    }
    /*Browse Command and Response structure are different
     *as comapared to Meta data response ,opcode and c-type
     *not part of browse response hence handling browse response
     *in seprate function
    */
    status = AVRC_BldBrowseResponse(rc_handle, pbrowsemsg_resp, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        BTA_AvMetaRsp(rc_handle, label, 0, p_msg);
    }
    else
    {
        BTIF_TRACE_ERROR("%s: failed to build metamsg response. status: 0x%02x",
                __FUNCTION__, status);
    }
}

/****************************************************************************
* Function         app_sendbrowsemsg
*
* Arguments    -   index         Of array stored while recieving command
*                  avrc_rsp      Avrcp response from application
*
* Description  -   Send Browse message
*
*******************************************************************************/
int app_sendbrowsemsg(UINT8 index ,tAVRC_RESPONSE *avrc_rsp, int rc_index)
{
   SEND_BROWSEMSG_RSP(index ,avrc_rsp, rc_index);
   return 0;
}


/*******************************************************************************
**
** Function         btif_rc_upstreams_evt
**
** Description      Executes AVRC UPSTREAMS events in btif context.
**
** Returns          void
**
*******************************************************************************/
static void btif_rc_upstreams_evt(UINT16 event, tAVRC_COMMAND *pavrc_cmd, UINT8 ctype, UINT8 label,
                                int index)
{
    bt_bdaddr_t remote_addr;
    BD_ADDR address;

    bdcpy(remote_addr.address, btif_rc_cb[index].rc_addr);
    BTIF_TRACE_IMP("%s pdu: %s handle: 0x%x ctype:%x label:%x", __FUNCTION__,
        dump_rc_pdu(pavrc_cmd->pdu), btif_rc_cb[index].rc_handle, ctype, label);

    switch (event)
    {
        case AVRC_PDU_GET_PLAY_STATUS:
        {
            BTIF_TRACE_DEBUG("AVRC_PDU_GET_PLAY_STATUS ");
            FILL_PDU_QUEUE(IDX_GET_PLAY_STATUS_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
            HAL_CBACK(bt_rc_callbacks, get_play_status_cb, &remote_addr);
        }
        break;
        case AVRC_PDU_LIST_PLAYER_APP_ATTR:
        {
            BTIF_TRACE_DEBUG("AVRC_PDU_LIST_PLAYER_APP_ATTR ");
            FILL_PDU_QUEUE(IDX_LIST_APP_ATTR_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
            HAL_CBACK(bt_rc_callbacks, list_player_app_attr_cb, &remote_addr);
        }
        break;
        case AVRC_PDU_LIST_PLAYER_APP_VALUES:
        {
            BTIF_TRACE_DEBUG("AVRC_PDU_LIST_PLAYER_APP_VALUES =%d" ,pavrc_cmd->list_app_values.attr_id);
            if (pavrc_cmd->list_app_values.attr_id == 0)
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu,
                                    AVRC_STS_BAD_PARAM);
                break;
            }
            FILL_PDU_QUEUE(IDX_LIST_APP_VALUE_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
            HAL_CBACK(bt_rc_callbacks, list_player_app_values_cb,
                    pavrc_cmd->list_app_values.attr_id,
                    &remote_addr);
        }
        break;
        case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
        {
            btrc_player_attr_t player_attr[MAX_ELEM_ATTR_SIZE];
            UINT8 player_attr_num;
            BTIF_TRACE_DEBUG("PLAYER_APP_VALUE PDU 0x13 = %d",pavrc_cmd->get_cur_app_val.num_attr);
            if ((pavrc_cmd->get_cur_app_val.num_attr == 0) ||
                  (pavrc_cmd->get_cur_app_val.num_attr > MAX_ELEM_ATTR_SIZE))
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu,
                                    AVRC_STS_BAD_PARAM);
                break;
            }
            memset( player_attr, 0, sizeof(player_attr));
            for (player_attr_num = 0 ; player_attr_num < pavrc_cmd->get_cur_app_val.num_attr;
                                                                            ++player_attr_num)
            {
                player_attr[player_attr_num] = pavrc_cmd->get_cur_app_val.attrs[player_attr_num];
            }
            FILL_PDU_QUEUE(IDX_GET_CURR_APP_VAL_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
            HAL_CBACK(bt_rc_callbacks, get_player_app_value_cb ,
                    pavrc_cmd->get_cur_app_val.num_attr, player_attr, &remote_addr);
        }
        break;
        case AVRC_PDU_SET_PLAYER_APP_VALUE:
        {
            btrc_player_settings_t attr;
            UINT8 count;
            if ((pavrc_cmd->set_app_val.num_val== 0) ||
                              (pavrc_cmd->set_app_val.num_val > MAX_ELEM_ATTR_SIZE))
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label,
                                       pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
                break;
            }
            else
            {
                for(count = 0; count < pavrc_cmd->set_app_val.num_val ; ++count)
                {
                    attr.attr_ids[count] = pavrc_cmd->set_app_val.p_vals[count].attr_id ;
                    attr.attr_values[count]= pavrc_cmd->set_app_val.p_vals[count].attr_val;
                }
                attr.num_attr  =  pavrc_cmd->set_app_val.num_val ;
                FILL_PDU_QUEUE(IDX_SET_APP_VAL_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
                HAL_CBACK(bt_rc_callbacks, set_player_app_value_cb, &attr, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
        {
            btrc_player_attr_t player_attr_txt [MAX_ELEM_ATTR_SIZE];
            UINT8 count_txt = 0 ;
            if ((pavrc_cmd->get_app_attr_txt.num_attr == 0) ||
                   (pavrc_cmd->get_app_attr_txt.num_attr > MAX_ELEM_ATTR_SIZE))
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
            }
            else
            {
                for (count_txt = 0;count_txt < pavrc_cmd->get_app_attr_txt.num_attr ; ++count_txt)
                {
                    player_attr_txt[count_txt] = pavrc_cmd->get_app_attr_txt.attrs[count_txt];
                }
                FILL_PDU_QUEUE(IDX_GET_APP_ATTR_TXT_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
                HAL_CBACK(bt_rc_callbacks, get_player_app_attrs_text_cb,
                            pavrc_cmd->get_app_attr_txt.num_attr, player_attr_txt, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
        {
            if (pavrc_cmd->get_app_val_txt.attr_id == 0 ||
                     pavrc_cmd->get_app_val_txt.attr_id > AVRC_PLAYER_VAL_GROUP_REPEAT)
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
                break;
            }
            if (pavrc_cmd->get_app_val_txt.num_val == 0)
            {
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
            }
            else
            {
                FILL_PDU_QUEUE(IDX_GET_APP_VAL_TXT_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu)
                HAL_CBACK(bt_rc_callbacks, get_player_app_values_text_cb,
                          pavrc_cmd->get_app_val_txt.attr_id, pavrc_cmd->get_app_val_txt.num_val,
                          pavrc_cmd->get_app_val_txt.vals, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_GET_ELEMENT_ATTR:
        {
            btrc_media_attr_t element_attrs[MAX_ELEM_ATTR_SIZE];
            UINT8 num_attr;
            memset(&element_attrs, 0, sizeof(element_attrs));
            if (pavrc_cmd->get_elem_attrs.num_attr == 0)
            {
                /* CT requests for all attributes */
                int attr_cnt;
                num_attr = MAX_ELEM_ATTR_SIZE;
                for (attr_cnt = 0; attr_cnt < MAX_ELEM_ATTR_SIZE; attr_cnt++)
                {
                    element_attrs[attr_cnt] = attr_cnt + 1;
                }
            }
            else if (pavrc_cmd->get_elem_attrs.num_attr == 0xFF)
            {
                /* 0xff indicates, no attributes requested - reject */
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu,
                    AVRC_STS_BAD_PARAM);
                return;
            }
            else
            {
                int attr_cnt, filled_attr_count;

                num_attr = 0;
                /* Attribute IDs from 1 to AVRC_MAX_NUM_MEDIA_ATTR_ID are only valid,
                 * hence HAL definition limits the attributes to AVRC_MAX_NUM_MEDIA_ATTR_ID.
                 * Fill only valid entries.
                 */
                for (attr_cnt = 0; (attr_cnt < pavrc_cmd->get_elem_attrs.num_attr) &&
                    (num_attr < AVRC_MAX_NUM_MEDIA_ATTR_ID); attr_cnt++)
                {
                    if ((pavrc_cmd->get_elem_attrs.attrs[attr_cnt] > 0) &&
                        (pavrc_cmd->get_elem_attrs.attrs[attr_cnt] <= AVRC_MAX_NUM_MEDIA_ATTR_ID))
                    {
                        /* Skip the duplicate entries : PTS sends duplicate entries for Fragment cases
                         */
                        for (filled_attr_count = 0; filled_attr_count < num_attr; filled_attr_count++)
                        {
                            if (element_attrs[filled_attr_count] == pavrc_cmd->get_elem_attrs.attrs[attr_cnt])
                                break;
                        }
                        if (filled_attr_count == num_attr)
                        {
                            element_attrs[num_attr] = pavrc_cmd->get_elem_attrs.attrs[attr_cnt];
                            num_attr++;
                        }
                    }
                }
            }
            FILL_PDU_QUEUE(IDX_GET_ELEMENT_ATTR_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
            HAL_CBACK(bt_rc_callbacks, get_element_attr_cb, num_attr, element_attrs, &remote_addr);
        }
        break;
        case AVRC_PDU_REGISTER_NOTIFICATION:
        {
            if (pavrc_cmd->reg_notif.event_id == BTRC_EVT_PLAY_POS_CHANGED &&
                pavrc_cmd->reg_notif.param == 0)
            {
                BTIF_TRACE_WARNING("%s Device registering position changed with illegal param 0.",
                    __FUNCTION__);
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
                /* de-register this notification for a rejected response */
                btif_rc_cb[index].rc_notif[BTRC_EVT_PLAY_POS_CHANGED - 1].bNotify = FALSE;
                return;
            }
            HAL_CBACK(bt_rc_callbacks, register_notification_cb, pavrc_cmd->reg_notif.event_id,
                pavrc_cmd->reg_notif.param, &remote_addr);
        }
        break;
        case AVRC_PDU_INFORM_DISPLAY_CHARSET:
        {
            tAVRC_RESPONSE avrc_rsp;
            BTIF_TRACE_EVENT("%s() AVRC_PDU_INFORM_DISPLAY_CHARSET", __FUNCTION__);
            if(btif_rc_cb[index].rc_connected == TRUE)
            {
                memset(&(avrc_rsp.inform_charset), 0, sizeof(tAVRC_RSP));
                avrc_rsp.inform_charset.opcode=opcode_from_pdu(AVRC_PDU_INFORM_DISPLAY_CHARSET);
                avrc_rsp.inform_charset.pdu=AVRC_PDU_INFORM_DISPLAY_CHARSET;
                avrc_rsp.inform_charset.status=AVRC_STS_NO_ERROR;
                send_metamsg_rsp(btif_rc_cb[index].rc_handle, label, ctype, &avrc_rsp);
            }
        }
        break;
        case AVRC_PDU_SET_ADDRESSED_PLAYER:
        {
            BTIF_TRACE_EVENT("%s() AVRC_PDU_SET_ADDRESSED_PLAYER", __FUNCTION__);
            FILL_PDU_QUEUE(IDX_SET_ADDRESS_PLAYER_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
            if (!btif_hf_is_call_idle())
            {
                set_addrplayer_rsp(ERR_PLAYER_NOT_ADDRESED, &remote_addr); // send reject if call is in progress
                return;
            }
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                HAL_CBACK(bt_rc_callbacks, set_addrplayer_cb, pavrc_cmd->addr_player.player_id, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_GET_FOLDER_ITEMS:
        {
            btrc_getfolderitem_t getfolder;
            btrc_browse_folderitem_t scope;
            UINT8  idx, numAttr;
            BTIF_TRACE_EVENT("%s()AVRC_PDU_GET_FOLDER_ITEMS", __FUNCTION__);
            FILL_PDU_QUEUE(IDX_GET_FOLDER_ITEMS_RSP,ctype, label, TRUE, index, pavrc_cmd->pdu);
            BTIF_TRACE_EVENT("rc_connected: %d",btif_rc_cb[index].rc_connected);
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                getfolder.start_item = pavrc_cmd->get_items.start_item;
                getfolder.end_item   = pavrc_cmd->get_items.end_item;
                getfolder.size       = AVCT_GetBrowseMtu(btif_rc_cb[index].rc_handle);
                getfolder.attr_count = pavrc_cmd->get_items.attr_count;
                scope                = (btrc_browse_folderitem_t)pavrc_cmd->get_items.scope;
                if (getfolder.attr_count == 255)
                {
                    numAttr = 0;
                }
                else
                {
                    if (getfolder.attr_count == 0)
                    {
                        numAttr = MAX_ELEM_ATTR_SIZE;
                        for (idx = 0; idx < MAX_ELEM_ATTR_SIZE; idx++)
                        {
                            getfolder.attrs[idx] = idx + 1;
                        }
                    }
                    else
                    {
                        numAttr = getfolder.attr_count;
                        for (idx = 0; idx < numAttr; idx++)
                        {
                            getfolder.attrs[idx] = pavrc_cmd->get_items.attrs[idx];
                            BTIF_TRACE_ERROR("getfolder[%d] = %d", idx, getfolder.\
                                                                        attrs[idx]);
                            BTIF_TRACE_ERROR("pavrc_cmd->get_items.attrs[%d] = %d",\
                                            idx, pavrc_cmd->get_items.attrs[idx]);
                        }
                    }
                }
                HAL_CBACK(bt_rc_callbacks, get_folderitems_cb, scope, &getfolder, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_SET_BROWSED_PLAYER:
        {
            BTIF_TRACE_EVENT("%s() AVRC_PDU_SET_BROWSED_PLAYER", __FUNCTION__);
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                FILL_PDU_QUEUE(IDX_SET_BROWSE_PLAYER_RSP, ctype, label, TRUE, index,
                        pavrc_cmd->pdu);
                HAL_CBACK(bt_rc_callbacks, set_browsed_player_cb, pavrc_cmd->br_player.player_id, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_CHANGE_PATH:
        {
            BTIF_TRACE_EVENT("%s() AVRC_PDU_CHANGE_PATH", __FUNCTION__);
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                FILL_PDU_QUEUE(IDX_CHANGE_PATH_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
                HAL_CBACK(bt_rc_callbacks, change_path_cb, pavrc_cmd->chg_path.direction, \
                                                            pavrc_cmd->chg_path.folder_uid, &remote_addr);
            }
        }
        break;
        case AVRC_PDU_GET_ITEM_ATTRIBUTES:
        {
            UINT8 num_attr =  pavrc_cmd->get_attrs.attr_count;
            UINT8 idx, num_attr_requested = 0;
            BTIF_TRACE_EVENT("%s() AVRC_PDU_GET_ITEM_ATTRIBUTES", __FUNCTION__);
            btrc_media_attr_t element_attrs[MAX_ELEM_ATTR_SIZE];
            memset(&element_attrs, 0, sizeof(element_attrs));
            if (num_attr == 0)
            {
                /* CT requests for all attributes */
                for (idx = 0; idx < MAX_ELEM_ATTR_SIZE; idx++)
                {
                    element_attrs[idx] = idx + 1;
                }
                num_attr_requested = MAX_ELEM_ATTR_SIZE; /* get all */
            }
            else if (num_attr == 0xFF)
            {
                /* 0xff indicates, no attributes requested - reject */
                send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu,
                    AVRC_STS_BAD_PARAM);
                return;
            }
            else
            {
                /* Attribute IDs from 1 to MAX_ELEM_ATTR_SIZE are only valid,
                 * hence HAL definition limits the attributes to BTRC_MAX_ELEM_ATTR_SIZE.
                 * Fill only valid entries.
                 */
                for (idx = 0; (idx < num_attr) && (num_attr <= MAX_ELEM_ATTR_SIZE); idx++)
                {
                    if ((pavrc_cmd->get_attrs.attrs[idx] > 0) &&
                        (pavrc_cmd->get_attrs.attrs[idx] <= MAX_ELEM_ATTR_SIZE))
                    {
                        element_attrs[idx] = pavrc_cmd->get_attrs.attrs[idx];
                        BTIF_TRACE_ERROR("element_attrs[%d]: %d", idx, element_attrs[idx]);
                    }
                }
                num_attr_requested = idx;
                BTIF_TRACE_ERROR("num_attr_requested: %d", num_attr_requested);
            }

            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                FILL_PDU_QUEUE(IDX_GET_ITEM_ATTR_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
                HAL_CBACK(bt_rc_callbacks, get_item_attr_cb, pavrc_cmd->get_attrs.scope,
                        pavrc_cmd->get_attrs.uid, num_attr_requested, element_attrs,
                        AVCT_GetBrowseMtu(btif_rc_cb[index].rc_handle), &remote_addr);
            }
        }
        break;
        case AVRC_PDU_PLAY_ITEM:
        {
            BTIF_TRACE_EVENT("%s() AVRC_PDU_PLAY_ITEM", __FUNCTION__);
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                FILL_PDU_QUEUE(IDX_PLAY_ITEM_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
                HAL_CBACK(bt_rc_callbacks, play_item_cb, pavrc_cmd->play_item.scope,
                pavrc_cmd->play_item.uid, &remote_addr);
                /*This command will trigger playback or
                * dual a2dp handoff.. Let it play on this device. */
                btif_rc_cb[index].rc_play_processed = TRUE;
                /* Trigger DUAL Handoff when support single streaming */
                if (btif_av_is_playing() &&
                    (btif_av_get_multicast_state() == FALSE))
                {
                    //compare the bd addr of current playing dev and this dev
                    btif_get_latest_playing_device(address);
                    if (bdcmp(btif_rc_cb[index].rc_addr, address) == 0)
                    {
                        APPL_TRACE_WARNING("Play item on the playing device");
                    } else
                    {
                        BTIF_TRACE_DEBUG("Play item on other device");
                        if (btif_av_is_device_connected(btif_rc_cb[index].rc_addr))
                        {
                            //Trigger suspend on currently playing device
                            BTIF_TRACE_DEBUG("Trigger dual handoff for this play Item command");
                            btif_rc_cb[index].rc_play_processed = TRUE;
                            btif_av_trigger_dual_handoff(TRUE, btif_rc_cb[index].rc_addr);
                        } else
                        {
                            APPL_TRACE_WARNING("%s:Play item Invalid on %d", __FUNCTION__, index);
                        }
                    }
                }
            }
        }
        break;
        case AVRC_PDU_GET_TOTAL_NUMBER_OF_ITEMS:
        {
            BTIF_TRACE_EVENT("%s() AVRC_PDU_GET_TOTAL_NUMBER_OF_ITEMS", __FUNCTION__);
            if (btif_rc_cb[index].rc_connected == TRUE)
            {
                FILL_PDU_QUEUE(IDX_GET_TOTAL_ITEMS_RSP, ctype, label, TRUE, index, pavrc_cmd->pdu);
                HAL_CBACK(bt_rc_callbacks, get_tot_item_cb, pavrc_cmd->get_tot_item.scope,
                      &remote_addr);
            }
        }
        break;
        default:
        {
            send_reject_response (btif_rc_cb[index].rc_handle, label, pavrc_cmd->pdu,
                    (pavrc_cmd->pdu == AVRC_PDU_SEARCH)?AVRC_STS_SEARCH_NOT_SUP:
                                                                    AVRC_STS_BAD_CMD);
        }
        break;
    }
}

#if (AVRC_CTLR_INCLUDED == TRUE)
/*******************************************************************************
**
** Function         btif_rc_ctrl_upstreams_rsp_cmd
**
** Description      Executes AVRC UPSTREAMS response events in btif context.
**
** Returns          void
**
*******************************************************************************/
static void btif_rc_ctrl_upstreams_rsp_cmd(UINT8 event, tAVRC_COMMAND *pavrc_cmd,
        UINT8 label)
{
    BTIF_TRACE_DEBUG("%s pdu: %s handle: 0x%x", __FUNCTION__,
        dump_rc_pdu(pavrc_cmd->pdu), btif_rc_cb[0].rc_handle);
    bt_bdaddr_t rc_addr;
    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);
#if (AVRC_CTLR_INCLUDED == TRUE)
    switch (event)
    {
    case AVRC_PDU_SET_ABSOLUTE_VOLUME:
         HAL_CBACK(bt_rc_ctrl_callbacks,setabsvol_cmd_cb, &rc_addr,
                 pavrc_cmd->volume.volume, label);
         break;
    case AVRC_PDU_REGISTER_NOTIFICATION:
         if (pavrc_cmd->reg_notif.event_id == AVRC_EVT_VOLUME_CHANGE)
         {
             HAL_CBACK(bt_rc_ctrl_callbacks, registernotification_absvol_cb,
                    &rc_addr, label);
         }
         break;
    }
#endif
}
#endif

#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
/*******************************************************************************
**
** Function         btif_rc_upstreams_rsp_evt
**
** Description      Executes AVRC UPSTREAMS response events in btif context.
**
** Returns          void
**
*******************************************************************************/
static void btif_rc_upstreams_rsp_evt(UINT16 event, tAVRC_RESPONSE *pavrc_resp, UINT8 ctype, UINT8 label, int index)
{
    bt_bdaddr_t remote_addr;

    bdcpy(remote_addr.address, btif_rc_cb[index].rc_addr);
    BTIF_TRACE_IMP("%s pdu: %s handle: 0x%x ctype:%x label:%x", __FUNCTION__,
        dump_rc_pdu(pavrc_resp->pdu), btif_rc_cb[index].rc_handle, ctype, label);

    switch (event)
    {
        case AVRC_PDU_REGISTER_NOTIFICATION:
        {
            if(AVRC_RSP_CHANGED==ctype)
                 btif_rc_cb[index].rc_volume=pavrc_resp->reg_notif.param.volume;
             HAL_CBACK(bt_rc_callbacks, volume_change_cb, pavrc_resp->reg_notif.param.volume,ctype,
                        &remote_addr)
        }
        break;

        case AVRC_PDU_SET_ABSOLUTE_VOLUME:
        {
            BTIF_TRACE_DEBUG("Set absolute volume change event received: volume %d,ctype %d",
                pavrc_resp->volume.volume,ctype);
            if(AVRC_RSP_ACCEPT==ctype)
                btif_rc_cb[index].rc_volume=pavrc_resp->volume.volume;
            HAL_CBACK(bt_rc_callbacks,volume_change_cb,pavrc_resp->volume.volume,ctype, &remote_addr)
        }
        break;

        default:
            return;
    }
}
#endif

/************************************************************************************
**  AVRCP API Functions
************************************************************************************/

/*******************************************************************************
**
** Function         init
**
** Description      Initializes the AVRC interface
**
** Returns          bt_status_t
**
*******************************************************************************/
//APP can pass the max conn value here too
static bt_status_t init(btrc_callbacks_t* callbacks, int max_connections)
{
    BTIF_TRACE_EVENT("## %s ##, max_connections = %d", __FUNCTION__, max_connections);
    bt_status_t result = BT_STATUS_SUCCESS;
    int i;

    if (bt_rc_callbacks)
        return BT_STATUS_DONE;

    bt_rc_callbacks = callbacks;
    btif_max_rc_clients = max_connections;
    memset (&btif_rc_cb, 0, sizeof(btif_rc_cb));
    for (i = 0; i < btif_max_rc_clients; i++)
    {
        btif_rc_cb[i].rc_vol_label=MAX_LABEL;
        btif_rc_cb[i].rc_volume=MAX_VOLUME;
        btif_rc_cb[i].rc_handle = BTIF_RC_HANDLE_NONE;
    }
    lbl_init();

    return result;
}

/*******************************************************************************
**
** Function         init_ctrl
**
** Description      Initializes the AVRC interface
**
** Returns          bt_status_t
**
*******************************************************************************/
static bt_status_t init_ctrl(btrc_ctrl_callbacks_t* callbacks )
{
    BTIF_TRACE_EVENT("## %s ##", __FUNCTION__);
    bt_status_t result = BT_STATUS_SUCCESS;

    if (bt_rc_ctrl_callbacks)
        return BT_STATUS_DONE;

    /* Controller is used only for Certification purposes.
     * In normal case AVRCP controller will not be used, hence
     * updating this is required.
     */
    bt_rc_ctrl_callbacks = callbacks;
    memset (&btif_rc_cb, 0, sizeof(btif_rc_cb));
    btif_rc_cb[BTIF_RC_DEFAULT_INDEX].rc_vol_label=MAX_LABEL;
    lbl_init();

    return result;
}

static void rc_ctrl_procedure_complete ()
{
    if (btif_rc_cb[0].rc_procedure_complete == TRUE)
    {
        return;
    }
    btif_rc_cb[0].rc_procedure_complete = TRUE;
    UINT32 attr_list[] = {
            AVRC_MEDIA_ATTR_ID_TITLE,
            AVRC_MEDIA_ATTR_ID_ARTIST,
            AVRC_MEDIA_ATTR_ID_ALBUM,
            AVRC_MEDIA_ATTR_ID_TRACK_NUM,
            AVRC_MEDIA_ATTR_ID_NUM_TRACKS,
            AVRC_MEDIA_ATTR_ID_GENRE,
            AVRC_MEDIA_ATTR_ID_PLAYING_TIME
            };
    /* Fix for below Klowkwork Issue at line 2748
     * Array 'attr_list' of size 7 may use index value(s) 7 */
    get_element_attribute_cmd (sizeof(attr_list)/sizeof(UINT32), attr_list);
}

/***************************************************************************
**
** Function         get_play_status_rsp
**
** Description      Returns the current play status.
**                      This method is called in response to
**                      GetPlayStatus request.
**
** Returns          bt_status_t
**
***************************************************************************/
static bt_status_t get_play_status_rsp(btrc_play_status_t play_status, uint32_t song_len,
    uint32_t song_pos, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    memset(&(avrc_rsp.get_play_status), 0, sizeof(tAVRC_GET_PLAY_STATUS_RSP));
    avrc_rsp.get_play_status.song_len = song_len;
    avrc_rsp.get_play_status.song_pos = song_pos;
    avrc_rsp.get_play_status.play_status = play_status;

    avrc_rsp.get_play_status.pdu = AVRC_PDU_GET_PLAY_STATUS;
    avrc_rsp.get_play_status.opcode = opcode_from_pdu(AVRC_PDU_GET_PLAY_STATUS);
    avrc_rsp.get_play_status.status = AVRC_STS_NO_ERROR;
    /* Send the response */
    SEND_METAMSG_RSP(IDX_GET_PLAY_STATUS_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}


/**************************************************************************
**
** Function         list_player_app_attr_rsp
**
** Description      ListPlayerApplicationSettingAttributes (PDU ID: 0x11)
**                  This method is callled in response to PDU 0x11
**
** Returns          bt_status_t
**
****************************************************************************/
static bt_status_t  list_player_app_attr_rsp( uint8_t num_attr, btrc_player_attr_t *p_attrs, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    UINT32 i;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    memset(&(avrc_rsp.list_app_attr), 0, sizeof(tAVRC_LIST_APP_ATTR_RSP));
    if (num_attr == 0)
    {
        avrc_rsp.list_app_attr.status = AVRC_STS_BAD_PARAM;
    }
    else
    {
        avrc_rsp.list_app_attr.num_attr = num_attr;
        for (i = 0 ; i < num_attr ; ++i)
        {
            avrc_rsp.list_app_attr.attrs[i] = p_attrs[i];
        }
        avrc_rsp.list_app_attr.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.list_app_attr.pdu  = AVRC_PDU_LIST_PLAYER_APP_ATTR ;
    avrc_rsp.list_app_attr.opcode = opcode_from_pdu(AVRC_PDU_LIST_PLAYER_APP_ATTR);
    /* Send the response */
    SEND_METAMSG_RSP(IDX_LIST_APP_ATTR_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function list_player_app_value_rsp
**
** Description      ListPlayerApplicationSettingValues (PDU ID: 0x12)
                    This method is called in response to PDU 0x12
************************************************************************/
static bt_status_t  list_player_app_value_rsp( uint8_t num_val, uint8_t *value, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    UINT32 i;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    memset(&(avrc_rsp.list_app_values), 0, sizeof(tAVRC_LIST_APP_VALUES_RSP));
    if ((num_val == 0) || (num_val > AVRC_MAX_APP_ATTR_SIZE))
    {
        avrc_rsp.list_app_values.status = AVRC_STS_BAD_PARAM;
    }
    else
    {
        avrc_rsp.list_app_values.num_val = num_val;
        for (i = 0; i < num_val; ++i)
        {
            avrc_rsp.list_app_values.vals[i] = value[i];
        }
        avrc_rsp.list_app_values.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.list_app_values.pdu   = AVRC_PDU_LIST_PLAYER_APP_VALUES;
    avrc_rsp.list_app_attr.opcode  = opcode_from_pdu(AVRC_PDU_LIST_PLAYER_APP_VALUES);
    /* Send the response */
    SEND_METAMSG_RSP(IDX_LIST_APP_VALUE_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}


/**********************************************************************
**
** Function  get_player_app_value_rsp
**
** Description  This methos is called in response to PDU ID 0x13
**
***********************************************************************/
static bt_status_t get_player_app_value_rsp(btrc_player_settings_t *p_vals, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    UINT32 i;
    tAVRC_APP_SETTING app_sett[AVRC_MAX_APP_ATTR_SIZE];
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    memset(&(avrc_rsp.get_cur_app_val) ,0 , sizeof(tAVRC_GET_CUR_APP_VALUE_RSP));
    avrc_rsp.get_cur_app_val.p_vals   = app_sett ;
    //Check for Error Condition
    if ((p_vals == NULL) || (p_vals->num_attr== 0) || (p_vals->num_attr > AVRC_MAX_APP_ATTR_SIZE))
    {
        avrc_rsp.get_cur_app_val.status = AVRC_STS_BAD_PARAM;
    }
    else if (p_vals->num_attr <= BTRC_MAX_APP_SETTINGS)
    {
        memset(app_sett, 0, sizeof(tAVRC_APP_SETTING)*p_vals->num_attr );
        //update num_val
        avrc_rsp.get_cur_app_val.num_val  = p_vals->num_attr ;
        avrc_rsp.get_cur_app_val.p_vals   = app_sett ;
        for (i = 0; i < p_vals->num_attr; ++i)
        {
            app_sett[i].attr_id  = p_vals->attr_ids[i] ;
            app_sett[i].attr_val = p_vals->attr_values[i];
            BTIF_TRACE_DEBUG("%s attr_id:0x%x, charset_id:0x%x, num_element:%d",
                           __FUNCTION__, (unsigned int)app_sett[i].attr_id,
                              app_sett[i].attr_val ,p_vals->num_attr );
        }
        //Update PDU , status aind
        avrc_rsp.get_cur_app_val.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.get_cur_app_val.pdu = AVRC_PDU_GET_CUR_PLAYER_APP_VALUE;
    avrc_rsp.get_cur_app_val.opcode = opcode_from_pdu(AVRC_PDU_GET_CUR_PLAYER_APP_VALUE);
    SEND_METAMSG_RSP(IDX_GET_CURR_APP_VAL_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/********************************************************************
**
** Function     set_player_app_value_rsp
**
** Description  This method is called in response to
**              application value
**
** Return       bt_staus_t
**
*******************************************************************/
static bt_status_t set_player_app_value_rsp (btrc_status_t rsp_status, bt_bdaddr_t *bd_addr )
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index;

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    CHECK_RC_CONNECTED
    avrc_rsp.set_app_val.opcode = opcode_from_pdu(AVRC_PDU_SET_PLAYER_APP_VALUE);
    avrc_rsp.set_app_val.pdu    =  AVRC_PDU_SET_PLAYER_APP_VALUE ;
    avrc_rsp.set_app_val.status =  rsp_status ;
    SEND_METAMSG_RSP(IDX_SET_APP_VAL_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/********************************************************************
**
** Function      get_player_app_attr_text_rsp
**
** Description   This method is called in response to get player
**               applicaton attribute text response
**
**
*******************************************************************/
static bt_status_t get_player_app_attr_text_rsp(int num_attr, btrc_player_setting_text_t *p_attrs,
                                                bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    tAVRC_APP_SETTING_TEXT attr_txt[AVRC_MAX_APP_ATTR_SIZE];
    int i;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("-%s on index = %d", __FUNCTION__, rc_index);

    if (num_attr == 0)
    {
        avrc_rsp.get_app_attr_txt.status = AVRC_STS_BAD_PARAM;
    }
    else
    {
        for (i =0; i< num_attr; ++i)
        {
            attr_txt[i].charset_id = AVRC_CHARSET_ID_UTF8;
            attr_txt[i].attr_id = p_attrs[i].id ;
            attr_txt[i].str_len = (UINT8)strnlen((char *)p_attrs[i].text, BTRC_MAX_ATTR_STR_LEN);
            attr_txt[i].p_str       = p_attrs[i].text ;
            BTIF_TRACE_DEBUG("%s attr_id:0x%x, charset_id:0x%x, str_len:%d, str:%s",
                                  __FUNCTION__, (unsigned int)attr_txt[i].attr_id,
                                  attr_txt[i].charset_id , attr_txt[i].str_len, attr_txt[i].p_str);
        }
        avrc_rsp.get_app_attr_txt.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.get_app_attr_txt.p_attrs = attr_txt ;
    avrc_rsp.get_app_attr_txt.num_attr = (UINT8)num_attr;
    avrc_rsp.get_app_attr_txt.pdu = AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT;
    avrc_rsp.get_app_attr_txt.opcode = opcode_from_pdu(AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT);
    /* Send the response */
    SEND_METAMSG_RSP(IDX_GET_APP_ATTR_TXT_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/********************************************************************
**
** Function      get_player_app_value_text_rsp
**
** Description   This method is called in response to Player application
**               value text
**
** Return        bt_status_t
**
*******************************************************************/
static bt_status_t get_player_app_value_text_rsp(int num_attr, btrc_player_setting_text_t *p_attrs, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    tAVRC_APP_SETTING_TEXT attr_txt[AVRC_MAX_APP_ATTR_SIZE];
    int i;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    if (num_attr == 0)
    {
        avrc_rsp.get_app_val_txt.status = AVRC_STS_BAD_PARAM;
    }
    else
    {
        for (i =0; i< num_attr; ++i)
        {
            attr_txt[i].charset_id = AVRC_CHARSET_ID_UTF8;
            attr_txt[i].attr_id  = p_attrs[i].id ;
            attr_txt[i].str_len  = (UINT8)strnlen((char *)p_attrs[i].text ,BTRC_MAX_ATTR_STR_LEN );
            attr_txt[i].p_str    = p_attrs[i].text ;
            BTIF_TRACE_DEBUG("%s attr_id:0x%x, charset_id:0x%x, str_len:%d, str:%s",
                                  __FUNCTION__, (unsigned int)attr_txt[i].attr_id,
                                 attr_txt[i].charset_id , attr_txt[i].str_len,attr_txt[i].p_str);
        }
        avrc_rsp.get_app_val_txt.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.get_app_val_txt.p_attrs = attr_txt;
    avrc_rsp.get_app_val_txt.num_attr = (UINT8)num_attr;
    avrc_rsp.get_app_val_txt.pdu = AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT;
    avrc_rsp.get_app_val_txt.opcode = opcode_from_pdu(AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT);
    /* Send the response */
    SEND_METAMSG_RSP(IDX_GET_APP_VAL_TXT_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/***************************************************************************
**
** Function         get_element_attr_rsp
**
** Description      Returns the current songs' element attributes
**                  in text.
**
** Returns          bt_status_t
**
***************************************************************************/
static bt_status_t get_element_attr_rsp(uint8_t num_attr, btrc_element_attr_val_t *p_attrs, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    UINT32 i;
    tAVRC_ATTR_ENTRY element_attrs[MAX_ELEM_ATTR_SIZE];
    int rc_index, valid_attr;
    CHECK_RC_CONNECTED

    valid_attr = 0;
    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("-%s on unknown index = %d", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    memset(element_attrs, 0, sizeof(tAVRC_ATTR_ENTRY) * num_attr);

    if (num_attr == 0)
    {
        avrc_rsp.get_play_status.status = AVRC_STS_BAD_PARAM;
    }
    else
    {
        for (i=0; i<num_attr; i++)
        {
            if ((UINT16)strlen((char *)p_attrs[i].text) != 0) {
                element_attrs[valid_attr].attr_id = p_attrs[i].attr_id;
                element_attrs[valid_attr].name.charset_id = AVRC_CHARSET_ID_UTF8;
                element_attrs[valid_attr].name.str_len = (UINT16)strlen((char *)p_attrs[i].text);
                element_attrs[valid_attr].name.p_str = p_attrs[i].text;
                BTIF_TRACE_DEBUG("%s attr_id:0x%x, charset_id:0x%x, str_len:%d, str:%s",
                    __FUNCTION__, (unsigned int)element_attrs[valid_attr].attr_id,
                    element_attrs[valid_attr].name.charset_id,
                    element_attrs[valid_attr].name.str_len,
                    element_attrs[valid_attr].name.p_str);
                valid_attr++;
            }
        }
        avrc_rsp.get_play_status.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.get_elem_attrs.num_attr = valid_attr;
    avrc_rsp.get_elem_attrs.p_attrs = element_attrs;
    avrc_rsp.get_elem_attrs.pdu = AVRC_PDU_GET_ELEMENT_ATTR;
    avrc_rsp.get_elem_attrs.opcode = opcode_from_pdu(AVRC_PDU_GET_ELEMENT_ATTR);
    /* Send the response */
    SEND_METAMSG_RSP(IDX_GET_ELEMENT_ATTR_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/***************************************************************************
**
** Function         register_notification_rsp
**
** Description      Response to the register notification request.
**                      in text.
**
** Returns          bt_status_t
**
***************************************************************************/
static bt_status_t register_notification_rsp(btrc_event_id_t event_id,
    btrc_notification_type_t type, btrc_register_notification_t *p_param, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int index = btif_rc_get_idx_by_addr(bd_addr->address);
    CHECK_RC_CONNECTED

    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }


    BTIF_TRACE_IMP("## %s ## event_id:%s", __FUNCTION__, dump_rc_notification_event_id(event_id));
    if (btif_rc_cb[index].rc_notif[event_id-1].bNotify == FALSE)
    {
        BTIF_TRACE_ERROR("Avrcp Event id not registered: event_id = %x", event_id);
        return BT_STATUS_NOT_READY;
    }
    memset(&(avrc_rsp.reg_notif), 0, sizeof(tAVRC_REG_NOTIF_RSP));
    avrc_rsp.reg_notif.event_id = event_id;

    switch(event_id)
    {
        case BTRC_EVT_PLAY_STATUS_CHANGED:
            avrc_rsp.reg_notif.param.play_status = p_param->play_status;
            /* Clear remote suspend flag, as remote device issues
             * suspend within 3s after pause, and DUT within 3s
             * initiates Play
            */
            if (avrc_rsp.reg_notif.param.play_status == PLAY_STATUS_PLAYING)
                btif_av_clear_remote_suspend_flag();
            break;
        case BTRC_EVT_TRACK_CHANGE:
            memcpy(&(avrc_rsp.reg_notif.param.track), &(p_param->track), sizeof(btrc_uid_t));
            break;
        case BTRC_EVT_PLAY_POS_CHANGED:
            avrc_rsp.reg_notif.param.play_pos = p_param->song_pos;
            break;
        case BTRC_EVT_APP_SETTINGS_CHANGED:
            avrc_rsp.reg_notif.param.player_setting.num_attr = p_param->player_setting.num_attr;
            memcpy(&avrc_rsp.reg_notif.param.player_setting.attr_id,
                                       p_param->player_setting.attr_ids, 2);
            memcpy(&avrc_rsp.reg_notif.param.player_setting.attr_value,
                                       p_param->player_setting.attr_values, 2);
            break;
        case BTRC_EVT_ADDRESSED_PLAYER_CHANGED:
            avrc_rsp.reg_notif.param.addr_player.player_id = p_param->player_id;
            avrc_rsp.reg_notif.param.addr_player.uid_counter = 0;
            break;
        case BTRC_EVT_AVAILABLE_PLAYERS_CHANGED:
            avrc_rsp.reg_notif.param.evt  = 0x0a;
            break;
        case BTRC_EVT_NOW_PLAYING_CONTENT_CHANGED:
            avrc_rsp.reg_notif.param.evt  = 0x09;
            break;
        default:
            BTIF_TRACE_WARNING("%s : Unhandled event ID : 0x%x", __FUNCTION__, event_id);
            return BT_STATUS_UNHANDLED;
    }

    avrc_rsp.reg_notif.pdu = AVRC_PDU_REGISTER_NOTIFICATION;
    avrc_rsp.reg_notif.opcode = opcode_from_pdu(AVRC_PDU_REGISTER_NOTIFICATION);
    if (type == BTRC_NOTIFICATION_TYPE_REJECT)
    {
        /* Spec AVRCP 1.5 ,section 6.9.2.2, on completion
         * of the addressed player changed notificatons the TG shall
         * complete all player specific notification with AV/C C-type
         * Rejected with error code Addressed Player changed.
         * This will happen in case when music player has changed
         * Application should take care of sending reject response.
        */
        avrc_rsp.get_play_status.status = AVRC_STS_ADDR_PLAYER_CHG;
    }
    else
    {
        avrc_rsp.get_play_status.status = AVRC_STS_NO_ERROR;
    }

    /* Send the response. */
    send_metamsg_rsp(btif_rc_cb[index].rc_handle, btif_rc_cb[index].rc_notif[event_id-1].label,
        ((type == BTRC_NOTIFICATION_TYPE_INTERIM)?AVRC_CMD_NOTIF:AVRC_RSP_CHANGED), &avrc_rsp);
    return BT_STATUS_SUCCESS;
}


/***************************************************************************
**
** Function         get_folderitem_rsp
**
** Description      Response to Get Folder Items , PDU 0x71
**
** Returns          bt_status_t
**
***************************************************************************/
static bt_status_t get_folderitem_rsp(btrc_folder_list_entries_t *rsp, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    tAVRC_ITEM item[MAX_FOLDER_RSP_SUPPORT]; //Number of players that could be supported
    UINT8  index, i, xx, media_attr_cnt;
    UINT8 *p_conversion;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);

    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_EVENT("%s() AVRC_PDU_GET_FOLDER_ITEMS", __FUNCTION__);
    index                             = IDX_GET_FOLDER_ITEMS_RSP ;
    avrc_rsp.get_items.pdu            = AVRC_PDU_GET_FOLDER_ITEMS;
    avrc_rsp.get_items.opcode         = AVRC_OP_BROWSE;
    avrc_rsp.get_items.uid_counter    = rsp->uid_counter;
    avrc_rsp.get_items.status         = rsp->status ;//4 means SUCCESS
    avrc_rsp.get_items.item_count     = 0;
    BTIF_TRACE_EVENT("status =%d, item_count =%d",rsp->status, rsp->item_count);

    for (i=0; (i < rsp->item_count && i < MAX_FOLDER_RSP_SUPPORT) ; ++i)
    {
        item[i].item_type = rsp->p_item_list[i].item_type;
        BTIF_TRACE_EVENT("item_type  = %d", rsp->p_item_list[i].item_type);
        switch (item[i].item_type)
        {
            case AVRC_ITEM_PLAYER:
                memcpy(item[i].u.player.features, rsp->p_item_list[i].u.player.features,
                            AVRC_FEATURE_MASK_SIZE);
                item[i].u.player.major_type      =  rsp->p_item_list[i].u.player.major_type;
                item[i].u.player.sub_type        =  rsp->p_item_list[i].u.player.sub_type;
                item[i].u.player.play_status     =  rsp->p_item_list[i].u.player.play_status;
                item[i].u.player.player_id       =  rsp->p_item_list[i].u.player.player_id;
                item[i].u.player.name.charset_id =  rsp->p_item_list[i].u.player.name.charset_id;
                item[i].u.player.name.str_len    =  rsp->p_item_list[i].u.player.name.str_len;
                item[i].u.player.name.p_str      =  rsp->p_item_list[i].u.player.name.p_str;
                ++avrc_rsp.get_items.item_count;
            break;

            case AVRC_ITEM_FOLDER:
                item[i].u.folder.type            =  rsp->p_item_list[i].u.folder.type;
                item[i].u.folder.playable        =  rsp->p_item_list[i].u.folder.playable;
                {
                    p_conversion = (UINT8*)&(rsp->p_item_list[i].u.folder.uid);
                    for (xx = 0; xx < AVRC_UID_SIZE; xx++)
                    {
                        ((UINT8 *) item[i].u.folder.uid)[AVRC_UID_SIZE - (xx + 1)] = \
                                                                        *p_conversion++;
                    }
                }

                item[i].u.folder.name.charset_id =  rsp->p_item_list[i].u.folder.name.charset_id;
                item[i].u.folder.name.str_len    =  rsp->p_item_list[i].u.folder.name.str_len;
                item[i].u.folder.name.p_str      =  rsp->p_item_list[i].u.folder.name.p_str;
                ++avrc_rsp.get_items.item_count;
            break;

            case AVRC_ITEM_MEDIA:
                item[i].u.media.type             =  rsp->p_item_list[i].u.media.type;
                {
                    p_conversion = (UINT8*)&(rsp->p_item_list[i].u.media.uid);
                    //BE_STREAM_TO_ARRAY(p_conversion, item[i].u.folder.uid, AVRC_UID_SIZE);
                    for (xx = 0; xx < AVRC_UID_SIZE; xx++)
                    {
                        ((UINT8 *) item[i].u.folder.uid)[AVRC_UID_SIZE - (xx + 1)] = \
                                                                        *p_conversion++;
                    }
                }
                item[i].u.media.name.charset_id  =  rsp->p_item_list[i].u.media.name.charset_id;
                item[i].u.media.name.str_len     =  rsp->p_item_list[i].u.media.name.str_len;
                item[i].u.media.name.p_str       =  rsp->p_item_list[i].u.media.name.p_str;
                media_attr_cnt                   =  rsp->p_item_list[i].u.media.attr_count;
                item[i].u.media.attr_count       =  rsp->p_item_list[i].u.media.attr_count;
                BTIF_TRACE_ERROR("attr count = %d", media_attr_cnt);
                if (media_attr_cnt > 0)
                {
                    if ((item[i].u.media.p_attr_list = \
                    (tAVRC_ATTR_ENTRY *)osi_malloc((UINT16)(media_attr_cnt * \
                                                        sizeof(tAVRC_ATTR_ENTRY)))) != NULL)
                    {
                        for (xx = 0; xx < media_attr_cnt; xx++)
                        {
                            item[i].u.media.p_attr_list[xx].attr_id = \
                                rsp->p_item_list[i].u.media.p_attr_list[xx].attr_id;
                            item[i].u.media.p_attr_list[xx].name.charset_id = \
                                rsp->p_item_list[i].u.media.p_attr_list[xx].name.charset_id;
                            item[i].u.media.p_attr_list[xx].name.str_len = \
                                rsp->p_item_list[i].u.media.p_attr_list[xx].name.str_len;
                            item[i].u.media.p_attr_list[xx].name.p_str = \
                                rsp->p_item_list[i].u.media.p_attr_list[xx].name.p_str;
                            BTIF_TRACE_ERROR("attr_id = %d", item[i].u.media.p_attr_list[xx].\
                                attr_id);
                            BTIF_TRACE_ERROR("str_len = %d", item[i].u.media.p_attr_list[xx].\
                                name.str_len);
                        }
                    }
                    else
                    {
                        BTIF_TRACE_ERROR("Not enough buffer allocated to accomodate attributes");
                        item[i].u.media.attr_count =  0;
                    }
                }
                ++avrc_rsp.get_items.item_count;
            break;

            default:
                return BT_STATUS_UNHANDLED;
            break;
        }
    }
    if (avrc_rsp.get_items.item_count == 0) {
        /*As per spec Send proper Error if no Music App is registered.*/
        avrc_rsp.get_items.status = AVRC_STS_BAD_RANGE;
    }
    avrc_rsp.get_items.p_item_list = item;
    app_sendbrowsemsg(IDX_GET_FOLDER_ITEMS_RSP ,&avrc_rsp, rc_index);
    BTIF_TRACE_ERROR("free attr list");
    for (i=0; (i < rsp->item_count && i < MAX_FOLDER_RSP_SUPPORT) ; ++i)
    {
        if (item[i].item_type == AVRC_ITEM_MEDIA)
        {
            if (rsp->p_item_list[i].u.media.attr_count > 0)
            {
                osi_free_and_reset((void**)&item[i].u.media.p_attr_list);
            }
        }
    }
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function        set_addrplayer_rsp
**
** Description     Response to Set Addressed Player , PDU 0x60
**
** Return          status
**
*********************************************************************/

static bt_status_t set_addrplayer_rsp(btrc_status_t status_code, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index;
    CHECK_RC_CONNECTED
    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);

    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);
    avrc_rsp.addr_player.status = status_code;
    avrc_rsp.addr_player.opcode = opcode_from_pdu(AVRC_PDU_SET_ADDRESSED_PLAYER);
    avrc_rsp.addr_player.pdu    = AVRC_PDU_SET_ADDRESSED_PLAYER;
    /* Send the response */
    SEND_METAMSG_RSP(IDX_SET_ADDRESS_PLAYER_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function        set_browseplayer_rsp
**
** Description     Response to Set Browsed Player , PDU 0x70
**
** Return          status
**
*********************************************************************/

static bt_status_t set_browseplayer_rsp(btrc_set_browsed_player_rsp_t *p_param, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    CHECK_RC_CONNECTED

    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    avrc_rsp.br_player.pdu = AVRC_PDU_SET_BROWSED_PLAYER;
    avrc_rsp.br_player.folder_depth = p_param->folder_depth;
    avrc_rsp.br_player.charset_id = p_param->charset_id;
    avrc_rsp.br_player.num_items = p_param->num_items;
    avrc_rsp.br_player.opcode = opcode_from_pdu(AVRC_PDU_SET_BROWSED_PLAYER);
    avrc_rsp.br_player.status = p_param->status;
    avrc_rsp.br_player.uid_counter = p_param->uid_counter;
    avrc_rsp.br_player.p_folders = (tAVRC_NAME*)p_param->p_folders;
    /* Send the response */
    SEND_BROWSEMSG_RSP(IDX_SET_BROWSE_PLAYER_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function        changepath_rsp
**
** Description     Response to Change Path , PDU 0x60
**
** Return          status
**
*********************************************************************/

static bt_status_t changepath_rsp(uint8_t status_code, uint32_t item_count, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);

    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    avrc_rsp.chg_path.num_items = item_count;
    avrc_rsp.chg_path.opcode = opcode_from_pdu(AVRC_PDU_CHANGE_PATH);
    avrc_rsp.chg_path.pdu = AVRC_PDU_CHANGE_PATH;
    avrc_rsp.chg_path.status = status_code;
    /* Send the response */
    SEND_BROWSEMSG_RSP(IDX_CHANGE_PATH_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
 **
 ** Function        get_totalitems_rsp
 **
 ** Description     Response to Get Total number of Items , PDU 0x75
 **
 ** Return          status
 **
 *********************************************************************/

 static bt_status_t get_total_items_rsp(uint8_t status_code, uint32_t item_count,
         uint16_t uid_counter, bt_bdaddr_t *bd_addr)
 {
     tAVRC_RESPONSE avrc_rsp;
     int rc_index;
     CHECK_RC_CONNECTED

     rc_index = btif_rc_get_idx_by_addr(bd_addr->address);

     if (rc_index == btif_max_rc_clients)
     {
         BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
         return BT_STATUS_FAIL;
     }
     BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);
     avrc_rsp.get_tot_items.num_items = item_count;
     avrc_rsp.get_tot_items.opcode = opcode_from_pdu(AVRC_PDU_GET_TOTAL_NUMBER_OF_ITEMS);
     avrc_rsp.get_tot_items.pdu = AVRC_PDU_GET_TOTAL_NUMBER_OF_ITEMS;
     avrc_rsp.get_tot_items.status = status_code;
     avrc_rsp.get_tot_items.uid_counter = uid_counter;
     /* Send the response */
     SEND_BROWSEMSG_RSP(IDX_GET_TOTAL_ITEMS_RSP, &avrc_rsp, rc_index);
     return BT_STATUS_SUCCESS;
 }

/**********************************************************************
**
** Function        playitem_rsp
**
** Description     Response to Play Item , PDU 0x60
**
** Return          status
**
*********************************************************************/

static bt_status_t playitem_rsp(uint8_t status_code, bt_bdaddr_t *bd_addr)
{
    tAVRC_RESPONSE avrc_rsp;
    int rc_index;
    CHECK_RC_CONNECTED

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    avrc_rsp.play_item.status = status_code;
    avrc_rsp.play_item.opcode = opcode_from_pdu(AVRC_PDU_PLAY_ITEM);
    avrc_rsp.play_item.pdu    = AVRC_PDU_PLAY_ITEM;
    /* Send the response */
    SEND_METAMSG_RSP(IDX_PLAY_ITEM_RSP, &avrc_rsp,rc_index);

    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function        get_itemattr_rsp
**
** Description     Response to Get Item , PDU 0x60
**
** Return          status
**
*********************************************************************/

static bt_status_t get_itemattr_rsp(uint8_t num_attr, btrc_element_attr_val_t *p_attrs, bt_bdaddr_t *bd_addr)

{
    tAVRC_RESPONSE avrc_rsp;
    UINT32 i;
    tAVRC_ATTR_ENTRY element_attrs[MAX_ELEM_ATTR_SIZE];
    int valid_attr, rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    CHECK_RC_CONNECTED

    valid_attr = 0;
    if (rc_index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, rc_index);

    memset(element_attrs, 0, sizeof(tAVRC_ATTR_ENTRY) * num_attr);

    if (num_attr == 0)
    {
        avrc_rsp.get_attrs.status = AVRC_STS_INTERNAL_ERR;
    }
    else
    {
        for (i=0; i<num_attr; i++)
        {
            if ((UINT16)strlen((char *)p_attrs[i].text) != 0) {
                element_attrs[valid_attr].attr_id = p_attrs[i].attr_id;
                element_attrs[valid_attr].name.charset_id = AVRC_CHARSET_ID_UTF8;
                element_attrs[valid_attr].name.str_len = (UINT16)strlen((char *)p_attrs[i].text);
                element_attrs[valid_attr].name.p_str = p_attrs[i].text;
                BTIF_TRACE_DEBUG("%s attr_id:0x%x, charset_id:0x%x, str_len:%d, str:%s",
                    __FUNCTION__, (unsigned int)element_attrs[valid_attr].attr_id,
                    element_attrs[valid_attr].name.charset_id,
                    element_attrs[valid_attr].name.str_len,
                    element_attrs[valid_attr].name.p_str);
                valid_attr++;
            }
        }
        avrc_rsp.get_attrs.status = AVRC_STS_NO_ERROR;
    }
    avrc_rsp.get_attrs.attr_count = valid_attr;
    avrc_rsp.get_attrs.p_attr_list = element_attrs;
    avrc_rsp.get_attrs.pdu = AVRC_PDU_GET_ITEM_ATTRIBUTES;
    avrc_rsp.get_attrs.opcode = opcode_from_pdu(AVRC_PDU_GET_ITEM_ATTRIBUTES);
    /* Send the response */
    SEND_BROWSEMSG_RSP(IDX_GET_ITEM_ATTR_RSP, &avrc_rsp, rc_index);
    return BT_STATUS_SUCCESS;
}

/**********************************************************************
**
** Function        is_device_active_in_handoff
**
** Description     Check if this is the active device during hand-off
**                 If the multicast is disabled when connected to more
**                 than one device and the active playing device is
**                 different or device to start playback is different
**                 then fail this condition.
** Return          BT_STATUS_SUCCESS if active BT_STATUS_FAIL otherwise
**
*********************************************************************/
static bt_status_t is_device_active_in_handoff(bt_bdaddr_t *bd_addr)
{
    BD_ADDR playing_device;
    int rc_index;
    UINT16 connected_devices, playing_devices;

    rc_index = btif_rc_get_idx_by_addr(bd_addr->address);
    if(rc_index >= btif_max_rc_clients)
    {
        return BT_STATUS_FAIL;
    }
    connected_devices = btif_av_get_num_connected_devices();
    playing_devices = btif_av_get_num_playing_devices();

    if((connected_devices < btif_max_rc_clients) || (playing_devices > 1))
    {
        return BT_STATUS_SUCCESS;
    }

    if((connected_devices > 1) && (playing_devices == 1))
    {
        /* One playing device, check the active device */
        btif_get_latest_playing_device(playing_device);
        if (bdcmp(bd_addr->address, playing_device) == 0)
        {
            return BT_STATUS_SUCCESS;
        }
        else
        {
            return BT_STATUS_FAIL;
        }
    }
    else if (playing_devices == 0)
    {
        /* No Playing device, find the next playing device
         * Play initiated from remote
         */
        if (btif_rc_cb[rc_index].rc_play_processed == TRUE)
        {
            return BT_STATUS_SUCCESS;
        }
        else if (btif_av_is_current_device(bd_addr->address) == TRUE)
        {
            /* Play initiated locally. check the current device and
             * make sure play is not initiated from other remote
             */
            BD_ADDR rc_play_device = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
            btif_rc_get_playing_device(rc_play_device);
            if(bdcmp(bd_addr->address, bd_addr_null) != 0)
            {
                /* some other playing device */
                return BT_STATUS_FAIL;
            }
            return BT_STATUS_SUCCESS;
        }
        else
        {
            BTIF_TRACE_ERROR("%s no playing or current device ", __FUNCTION__);
            return BT_STATUS_FAIL;
        }
    }
    else
    {
        BTIF_TRACE_ERROR("%s unchecked state: connected devices: %d playing devices: %d",
            __FUNCTION__, connected_devices, playing_devices);
        return BT_STATUS_SUCCESS;
    }
}

/***************************************************************************
**
** Function         set_volume
**
** Description      Send current volume setting to remote side.
**                  Support limited to SetAbsoluteVolume
**                  This can be enhanced to support Relative Volume (AVRCP 1.0).
**                  With RelateVolume, we will send VOLUME_UP/VOLUME_DOWN
**                  as opposed to absolute volume level
** volume: Should be in the range 0-127. bit7 is reseved and cannot be set
**
** Returns          bt_status_t
**
***************************************************************************/
static bt_status_t set_volume(uint8_t volume, bt_bdaddr_t *bd_addr)
{
    int index = btif_rc_get_idx_by_addr(bd_addr->address);

    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return BT_STATUS_FAIL;
    }
    BTIF_TRACE_DEBUG("- %s on index = %d", __FUNCTION__, index);
    CHECK_RC_CONNECTED
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction=NULL;

    if(btif_rc_cb[index].rc_volume==volume)
    {
        status=BT_STATUS_DONE;
        BTIF_TRACE_ERROR("%s: volume value already set earlier: 0x%02x",__FUNCTION__, volume);
        return status;
    }

    if ((btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG) &&
        (btif_rc_cb[index].rc_features & BTA_AV_FEAT_ADV_CTRL))
    {
        tAVRC_COMMAND avrc_cmd = {0};
        BT_HDR *p_msg = NULL;

        BTIF_TRACE_DEBUG("%s: Peer supports absolute volume. newVolume=%d", __FUNCTION__, volume);
        avrc_cmd.volume.opcode = AVRC_OP_VENDOR;
        avrc_cmd.volume.pdu = AVRC_PDU_SET_ABSOLUTE_VOLUME;
        avrc_cmd.volume.status = AVRC_STS_NO_ERROR;
        avrc_cmd.volume.volume = volume;

        if (AVRC_BldCommand(&avrc_cmd, &p_msg) == AVRC_STS_NO_ERROR)
        {
            bt_status_t tran_status=get_transaction(&p_transaction);
            if (BT_STATUS_SUCCESS == tran_status && NULL!=p_transaction)
            {
                BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                                   __FUNCTION__,p_transaction->lbl);
                BTA_AvMetaCmd(btif_rc_cb[index].rc_handle,p_transaction->lbl, AVRC_CMD_CTRL, p_msg);
                status =  BT_STATUS_SUCCESS;
            }
            else
            {
                osi_free(p_msg);
                BTIF_TRACE_ERROR("%s: failed to obtain transaction details. status: 0x%02x",
                                    __FUNCTION__, tran_status);
                status = BT_STATUS_FAIL;
            }
        }
        else
        {
            BTIF_TRACE_ERROR("%s: failed to build absolute volume command. status: 0x%02x",
                                __FUNCTION__, status);
            status = BT_STATUS_FAIL;
        }
    }
    else
        status=BT_STATUS_NOT_READY;
    return status;
}

#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
/***************************************************************************
**
** Function         register_volumechange
**
** Description     Register for volume change notification from remote side.
**
** Returns          void
**
***************************************************************************/

static void register_volumechange (UINT8 lbl, int index)
{
    tAVRC_COMMAND avrc_cmd = {0};
    BT_HDR *p_msg = NULL;
    tAVRC_STS BldResp=AVRC_STS_BAD_CMD;
    rc_transaction_t *p_transaction=NULL;
    BTIF_TRACE_DEBUG("%s called with label:%d",__FUNCTION__,lbl);

    avrc_cmd.cmd.opcode=0x00;
    avrc_cmd.pdu = AVRC_PDU_REGISTER_NOTIFICATION;
    avrc_cmd.reg_notif.event_id = AVRC_EVT_VOLUME_CHANGE;
    avrc_cmd.reg_notif.status = AVRC_STS_NO_ERROR;
    avrc_cmd.reg_notif.param = 0;

    BldResp=AVRC_BldCommand(&avrc_cmd, &p_msg);
    if (AVRC_STS_NO_ERROR == BldResp && p_msg) {
        p_transaction = get_transaction_by_lbl(lbl);
        if (p_transaction != NULL) {
            BTA_AvMetaCmd(btif_rc_cb[index].rc_handle, p_transaction->lbl,
                          AVRC_CMD_NOTIF, p_msg);
            BTIF_TRACE_DEBUG("%s:BTA_AvMetaCmd called", __func__);
         } else {
            osi_free(p_msg);
            BTIF_TRACE_ERROR("%s transaction not obtained with label: %d",
                             __func__, lbl);
         }
    } else {
        BTIF_TRACE_ERROR("%s failed to build command:%d", __func__, BldResp);
    }
}

/***************************************************************************
**
** Function         handle_rc_metamsg_rsp
**
** Description      Handle RC metamessage response
**
** Returns          void
**
***************************************************************************/
static void handle_rc_metamsg_rsp(tBTA_AV_META_MSG *pmeta_msg)
{
    UINT8 index;  /*For RC it is zero*/
    tAVRC_RESPONSE    avrc_response = {0};
    UINT8             scratch_buf[512] = {0};
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;

    index = btif_rc_get_idx_by_rc_handle(pmeta_msg->rc_handle);
    if (index == btif_max_rc_clients)
    {
        BTIF_TRACE_ERROR("%s: on unknown index", __FUNCTION__);
        return;
    }

    if(AVRC_OP_VENDOR==pmeta_msg->p_msg->hdr.opcode &&(AVRC_RSP_CHANGED==pmeta_msg->code
      || AVRC_RSP_INTERIM==pmeta_msg->code || AVRC_RSP_ACCEPT==pmeta_msg->code
      || AVRC_RSP_REJ==pmeta_msg->code || AVRC_RSP_NOT_IMPL==pmeta_msg->code))
    {
        status=AVRC_ParsResponse(pmeta_msg->p_msg, &avrc_response, scratch_buf, sizeof(scratch_buf));
        BTIF_TRACE_DEBUG("%s: code %d,event ID %d,PDU %x,parsing status %d, label:%d",
          __FUNCTION__,pmeta_msg->code,avrc_response.reg_notif.event_id,avrc_response.reg_notif.pdu,
          status, pmeta_msg->label);

        if (status != AVRC_STS_NO_ERROR)
        {
            if (AVRC_PDU_REGISTER_NOTIFICATION==avrc_response.rsp.pdu
                && AVRC_EVT_VOLUME_CHANGE==avrc_response.reg_notif.event_id
                && btif_rc_cb[index].rc_vol_label==pmeta_msg->label)
            {
                btif_rc_cb[index].rc_vol_label=MAX_LABEL;
                release_transaction(btif_rc_cb[index].rc_vol_label);
            }
            else if (AVRC_PDU_SET_ABSOLUTE_VOLUME==avrc_response.rsp.pdu)
            {
                release_transaction(pmeta_msg->label);
            }
            return;
        }
        else if (AVRC_PDU_REGISTER_NOTIFICATION==avrc_response.rsp.pdu
            && AVRC_EVT_VOLUME_CHANGE==avrc_response.reg_notif.event_id
            && btif_rc_cb[index].rc_vol_label!=pmeta_msg->label)
            {
                // Just discard the message, if the device sends back with an incorrect label
                BTIF_TRACE_DEBUG("%s:Discarding register notfn in rsp.code: %d and label %d",
                __FUNCTION__, pmeta_msg->code, pmeta_msg->label);
                return;
            }
    }
    else
    {
        BTIF_TRACE_DEBUG("%s:Received vendor dependent in adv ctrl rsp. code: %d len: %d. Not processing it.",
        __FUNCTION__, pmeta_msg->code, pmeta_msg->len);
        return;
    }

    if (AVRC_PDU_REGISTER_NOTIFICATION==avrc_response.rsp.pdu
        && AVRC_EVT_VOLUME_CHANGE==avrc_response.reg_notif.event_id
        && AVRC_RSP_CHANGED==pmeta_msg->code)
     {
         /* re-register for volume change notification */
         // Do not re-register for rejected case, as it might get into endless loop
         register_volumechange(btif_rc_cb[index].rc_vol_label, index);
     }
     else if (AVRC_PDU_SET_ABSOLUTE_VOLUME==avrc_response.rsp.pdu)
     {
          /* free up the label here */
          release_transaction(pmeta_msg->label);
     }

     BTIF_TRACE_EVENT("%s: Passing received metamsg response to app. pdu: %s",
             __FUNCTION__, dump_rc_pdu(avrc_response.pdu));
     btif_rc_upstreams_rsp_evt((uint16_t)avrc_response.rsp.pdu, &avrc_response, pmeta_msg->code,
                                pmeta_msg->label, index);
}
#endif

#if (AVRC_CTLR_INCLUDED == TRUE)
/***************************************************************************
**
** Function         iterate_supported_event_list_for_interim_rsp
**
** Description      iterator callback function to match the event and handle
**                  timer cleanup
** Returns          true to continue iterating, false to stop
**
***************************************************************************/
bool iterate_supported_event_list_for_interim_rsp(void *data, void *cb_data)
{
    UINT8 *p_event_id;
    btif_rc_supported_event_t *p_event = (btif_rc_supported_event_t *)data;

    p_event_id = (UINT8*)cb_data;

    if (p_event->event_id == *p_event_id)
    {
        p_event->status = eINTERIM;
        return false;
    }
    return true;
}

/***************************************************************************
**
** Function         iterate_supported_event_list_for_timeout
**
** Description      Iterator callback function for timeout handling.
**                  As part of the failure handling, it releases the
**                  transaction label and removes the event from list,
**                  this event will not be requested again during
**                  the lifetime of the connection.
** Returns          false to stop iterating, true to continue
**
***************************************************************************/
bool iterate_supported_event_list_for_timeout(void *data, void *cb_data)
{
    UINT8 label;
    btif_rc_supported_event_t *p_event = (btif_rc_supported_event_t *)data;

    label = (*(UINT8*)cb_data) & 0xFF;

    if (p_event->label == label)
    {
        list_remove(btif_rc_cb[0].rc_supported_event_list, p_event);
        return false;
    }
    return true;
}

/***************************************************************************
**
** Function         rc_notification_interim_timout
**
** Description      Interim response timeout handler.
**                  Runs the iterator to check and clear the timed out event.
**                  Proceeds to register for the unregistered events.
** Returns          None
**
***************************************************************************/
static void rc_notification_interim_timout (UINT8 label)
{
    list_node_t *node;
    if (btif_rc_cb[0].rc_supported_event_list == NULL)
        return;
    list_foreach(btif_rc_cb[0].rc_supported_event_list,
                     iterate_supported_event_list_for_timeout, &label);
    /* Timeout happened for interim response for the registered event,
     * check if there are any pending for registration
     */
    node = list_begin(btif_rc_cb[0].rc_supported_event_list);
    while (node != NULL)
    {
        btif_rc_supported_event_t *p_event;

        p_event = (btif_rc_supported_event_t *)list_node(node);
        if ((p_event != NULL) && (p_event->status == eNOT_REGISTERED))
        {
            register_for_event_notification(p_event);
            break;
        }
        node = list_next (node);
    }
    /* Todo. Need to initiate application settings query if this
     * is the last event registration.
     */
}

/***************************************************************************
**
** Function         btif_rc_status_cmd_timeout_handler
**
** Description      RC status command timeout handler (Runs in BTIF context).
** Returns          None
**
***************************************************************************/
static void btif_rc_status_cmd_timeout_handler(UNUSED_ATTR uint16_t event,
                                               char *data)
{
    btif_rc_timer_context_t *p_context;
    tAVRC_RESPONSE      avrc_response = {0};
    tBTA_AV_META_MSG    meta_msg;

    p_context = (btif_rc_timer_context_t *)data;
    memset(&meta_msg, 0, sizeof(tBTA_AV_META_MSG));
    meta_msg.rc_handle = btif_rc_cb[0].rc_handle;

    switch (p_context->rc_status_cmd.pdu_id) {
    case AVRC_PDU_REGISTER_NOTIFICATION:
        rc_notification_interim_timout(p_context->rc_status_cmd.label);
        break;

    case AVRC_PDU_GET_CAPABILITIES:
        avrc_response.get_caps.status = BTIF_RC_STS_TIMEOUT;
        handle_get_capability_response(&meta_msg, &avrc_response.get_caps);
        break;

    case AVRC_PDU_LIST_PLAYER_APP_ATTR:
        avrc_response.list_app_attr.status = BTIF_RC_STS_TIMEOUT;
        handle_app_attr_response(&meta_msg, &avrc_response.list_app_attr);
        break;

    case AVRC_PDU_LIST_PLAYER_APP_VALUES:
        avrc_response.list_app_values.status = BTIF_RC_STS_TIMEOUT;
        handle_app_val_response(&meta_msg, &avrc_response.list_app_values);
        break;

    case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
        avrc_response.get_cur_app_val.status = BTIF_RC_STS_TIMEOUT;
        handle_app_cur_val_response(&meta_msg, &avrc_response.get_cur_app_val);
        break;

    case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
        avrc_response.get_app_attr_txt.status = BTIF_RC_STS_TIMEOUT;
        handle_app_attr_txt_response(&meta_msg, &avrc_response.get_app_attr_txt);
        break;

    case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
        avrc_response.get_app_val_txt.status = BTIF_RC_STS_TIMEOUT;
        handle_app_attr_txt_response(&meta_msg, &avrc_response.get_app_val_txt);
        break;

    case AVRC_PDU_GET_ELEMENT_ATTR:
        avrc_response.get_elem_attrs.status = BTIF_RC_STS_TIMEOUT;
        handle_get_elem_attr_response(&meta_msg, &avrc_response.get_elem_attrs);
        break;

    case AVRC_PDU_GET_PLAY_STATUS:
        avrc_response.get_play_status.status = BTIF_RC_STS_TIMEOUT;
        handle_get_playstatus_response(&meta_msg, &avrc_response.get_play_status);
        break;
    }
    release_transaction(p_context->rc_status_cmd.label);
}

/***************************************************************************
**
** Function         btif_rc_status_cmd_timer_timeout
**
** Description      RC status command timeout callback.
**                  This is called from BTU context and switches to BTIF
**                  context to handle the timeout events
** Returns          None
**
***************************************************************************/
static void btif_rc_status_cmd_timer_timeout(void *data)
{
    btif_rc_timer_context_t *p_data = (btif_rc_timer_context_t *)data;

    btif_transfer_context(btif_rc_status_cmd_timeout_handler, 0,
                          (char *)p_data, sizeof(btif_rc_timer_context_t),
                          NULL);
}

/***************************************************************************
**
** Function         btif_rc_control_cmd_timeout_handler
**
** Description      RC control command timeout handler (Runs in BTIF context).
** Returns          None
**
***************************************************************************/
static void btif_rc_control_cmd_timeout_handler(UNUSED_ATTR uint16_t event,
                                                char *data)
{
    btif_rc_timer_context_t *p_context = (btif_rc_timer_context_t *)data;
    tAVRC_RESPONSE      avrc_response = {0};
    tBTA_AV_META_MSG    meta_msg;

    memset(&meta_msg, 0, sizeof(tBTA_AV_META_MSG));
    meta_msg.rc_handle = btif_rc_cb[0].rc_handle;

    switch (p_context->rc_control_cmd.pdu_id) {
    case AVRC_PDU_SET_PLAYER_APP_VALUE:
        avrc_response.set_app_val.status = BTIF_RC_STS_TIMEOUT;
        handle_set_app_attr_val_response(&meta_msg,
                                         &avrc_response.set_app_val);
        break;
    }
    release_transaction(p_context->rc_control_cmd.label);
}

/***************************************************************************
**
** Function         btif_rc_control_cmd_timer_timeout
**
** Description      RC control command timeout callback.
**                  This is called from BTU context and switches to BTIF
**                  context to handle the timeout events
** Returns          None
**
***************************************************************************/
static void btif_rc_control_cmd_timer_timeout(void *data)
{
    btif_rc_timer_context_t *p_data = (btif_rc_timer_context_t *)data;

    btif_transfer_context(btif_rc_control_cmd_timeout_handler, 0,
                          (char *)p_data, sizeof(btif_rc_timer_context_t),
                          NULL);
}

/***************************************************************************
**
** Function         btif_rc_play_status_timeout_handler
**
** Description      RC play status timeout handler (Runs in BTIF context).
** Returns          None
**
***************************************************************************/
static void btif_rc_play_status_timeout_handler(UNUSED_ATTR uint16_t event,
                                                UNUSED_ATTR char *p_data)
{
    get_play_status_cmd();
    rc_start_play_status_timer();
}

/***************************************************************************
**
** Function         btif_rc_play_status_timer_timeout
**
** Description      RC play status timeout callback.
**                  This is called from BTU context and switches to BTIF
**                  context to handle the timeout events
** Returns          None
**
***************************************************************************/
static void btif_rc_play_status_timer_timeout(UNUSED_ATTR void *data)
{
    btif_transfer_context(btif_rc_play_status_timeout_handler, 0, 0, 0, NULL);
}

/***************************************************************************
**
** Function         rc_start_play_status_timer
**
** Description      Helper function to start the timer to fetch play status.
** Returns          None
**
***************************************************************************/
static void rc_start_play_status_timer(void)
{
    /* Start the Play status timer only if it is not started */
    if (!alarm_is_scheduled(btif_rc_cb[0].rc_play_status_timer)) {
        if (btif_rc_cb[0].rc_play_status_timer == NULL) {
            btif_rc_cb[0].rc_play_status_timer =
                alarm_new("btif_rc.rc_play_status_timer");
        }
        alarm_set_on_queue(btif_rc_cb[0].rc_play_status_timer,
                           BTIF_TIMEOUT_RC_INTERIM_RSP_MS,
                           btif_rc_play_status_timer_timeout, NULL,
                           btu_general_alarm_queue);
    }
}

/***************************************************************************
**
** Function         rc_stop_play_status_timer
**
** Description      Helper function to stop the play status timer.
** Returns          None
**
***************************************************************************/
void rc_stop_play_status_timer()
{
    if (btif_rc_cb[0].rc_play_status_timer != NULL)
        alarm_cancel(btif_rc_cb[0].rc_play_status_timer);
}

/***************************************************************************
**
** Function         register_for_event_notification
**
** Description      Helper function registering notification events
**                  sets an interim response timeout to handle if the remote
**                  does not respond.
** Returns          None
**
***************************************************************************/
static void register_for_event_notification(btif_rc_supported_event_t *p_event)
{
    bt_status_t status;
    rc_transaction_t *p_transaction;

    status = get_transaction(&p_transaction);
    if (status == BT_STATUS_SUCCESS)
    {
        btif_rc_timer_context_t *p_context = &p_transaction->txn_timer_context;

        status = register_notification_cmd (p_transaction->lbl, p_event->event_id, 0);
        if (status != BT_STATUS_SUCCESS)
        {
            BTIF_TRACE_ERROR("%s Error in Notification registration %d",
                __FUNCTION__, status);
            release_transaction (p_transaction->lbl);
            return;
        }
        p_event->label = p_transaction->lbl;
        p_event->status = eREGISTERED;
        p_context->rc_status_cmd.label = p_transaction->lbl;
        p_context->rc_status_cmd.pdu_id = AVRC_PDU_REGISTER_NOTIFICATION;

        alarm_free(p_transaction->txn_timer);
        p_transaction->txn_timer =
            alarm_new("btif_rc.status_command_txn_timer");
        alarm_set_on_queue(p_transaction->txn_timer,
                           BTIF_TIMEOUT_RC_INTERIM_RSP_MS,
                           btif_rc_status_cmd_timer_timeout, p_context,
                           btu_general_alarm_queue);
    }
    else
    {
        BTIF_TRACE_ERROR("%s Error No more Transaction label %d",
            __FUNCTION__, status);
    }
}

static void start_status_command_timer(UINT8 pdu_id, rc_transaction_t *p_txn)
{
    btif_rc_timer_context_t *p_context = &p_txn->txn_timer_context;
    p_context->rc_status_cmd.label = p_txn->lbl;
    p_context->rc_status_cmd.pdu_id = pdu_id;

    alarm_free(p_txn->txn_timer);
    p_txn->txn_timer = alarm_new("btif_rc.status_command_txn_timer");
    alarm_set_on_queue(p_txn->txn_timer, BTIF_TIMEOUT_RC_STATUS_CMD_MS,
                       btif_rc_status_cmd_timer_timeout, p_context,
                       btu_general_alarm_queue);
}

static void start_control_command_timer(UINT8 pdu_id, rc_transaction_t *p_txn)
{
    btif_rc_timer_context_t *p_context = &p_txn->txn_timer_context;
    p_context->rc_control_cmd.label = p_txn->lbl;
    p_context->rc_control_cmd.pdu_id = pdu_id;

    alarm_free(p_txn->txn_timer);
    p_txn->txn_timer = alarm_new("btif_rc.control_command_txn_timer");
    alarm_set_on_queue(p_txn->txn_timer,
                       BTIF_TIMEOUT_RC_CONTROL_CMD_MS,
                       btif_rc_control_cmd_timer_timeout, p_context,
                       btu_general_alarm_queue);
}

/***************************************************************************
**
** Function         handle_get_capability_response
**
** Description      Handles the get_cap_response to populate company id info
**                  and query the supported events.
**                  Initiates Notification registration for events supported
** Returns          None
**
***************************************************************************/
static void handle_get_capability_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_CAPS_RSP *p_rsp)
{
    int xx = 0;

    /* Todo: Do we need to retry on command timeout */
    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        BTIF_TRACE_ERROR("%s Error capability response 0x%02X",
                __FUNCTION__, p_rsp->status);
        return;
    }

    if (p_rsp->capability_id == AVRC_CAP_EVENTS_SUPPORTED)
    {
        btif_rc_supported_event_t *p_event;

        /* Todo: Check if list can be active when we hit here */
        btif_rc_cb[0].rc_supported_event_list = list_new(osi_free);
        for (xx = 0; xx < p_rsp->count; xx++)
        {
            /* Skip registering for Play position change notification */
            if ((p_rsp->param.event_id[xx] == AVRC_EVT_PLAY_STATUS_CHANGE)||
                (p_rsp->param.event_id[xx] == AVRC_EVT_TRACK_CHANGE)||
                (p_rsp->param.event_id[xx] == AVRC_EVT_APP_SETTING_CHANGE))
            {
                p_event = (btif_rc_supported_event_t *)osi_malloc(sizeof(btif_rc_supported_event_t));
                p_event->event_id = p_rsp->param.event_id[xx];
                p_event->status = eNOT_REGISTERED;
                list_append(btif_rc_cb[0].rc_supported_event_list, p_event);
            }
        }
        if (list_is_empty(btif_rc_cb[0].rc_supported_event_list))
        {
            BTIF_TRACE_EVENT(" Supported event list Empty, returning");
            return;
        }
        p_event = list_front(btif_rc_cb[0].rc_supported_event_list);
        if (p_event != NULL)
        {
            register_for_event_notification(p_event);
        }
    }
    else if (p_rsp->capability_id == AVRC_CAP_COMPANY_ID)
    {
        getcapabilities_cmd (AVRC_CAP_EVENTS_SUPPORTED);
        BTIF_TRACE_EVENT("%s AVRC_CAP_COMPANY_ID: ", __FUNCTION__);
        for (xx = 0; xx < p_rsp->count; xx++)
        {
            BTIF_TRACE_EVENT("%s    : %d", __FUNCTION__, p_rsp->param.company_id[xx]);
        }
    }
}

bool rc_is_track_id_valid (tAVRC_UID uid)
{
    tAVRC_UID invalid_uid = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};

    if (memcmp(uid, invalid_uid, sizeof(tAVRC_UID)) == 0)
    {
        return false;
    }
    else
    {
        return true;
    }
}

/***************************************************************************
**
** Function         handle_notification_response
**
** Description      Main handler for notification responses to registered events
**                  1. Register for unregistered event(in interim response path)
**                  2. After registering for all supported events, start
**                     retrieving application settings and values
**                  3. Reregister for events on getting changed response
**                  4. Run play status timer for getting position when the
**                     status changes to playing
**                  5. Get the Media details when the track change happens
**                     or track change interim response is received with
**                     valid track id
**                  6. HAL callback for play status change and application
**                     setting change
** Returns          None
**
***************************************************************************/
static void handle_notification_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_REG_NOTIF_RSP *p_rsp)
{
    bt_bdaddr_t rc_addr;
    UINT32 attr_list[] = {
        AVRC_MEDIA_ATTR_ID_TITLE,
        AVRC_MEDIA_ATTR_ID_ARTIST,
        AVRC_MEDIA_ATTR_ID_ALBUM,
        AVRC_MEDIA_ATTR_ID_TRACK_NUM,
        AVRC_MEDIA_ATTR_ID_NUM_TRACKS,
        AVRC_MEDIA_ATTR_ID_GENRE,
        AVRC_MEDIA_ATTR_ID_PLAYING_TIME
        };


    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    if (pmeta_msg->code == AVRC_RSP_INTERIM)
    {
        /* Klockwork Fix for below issue 4442
         * 'p_event' might be used uninitialized in this function.*/
        btif_rc_supported_event_t *p_event = NULL;
        list_node_t *node;

        BTIF_TRACE_DEBUG("%s Interim response : 0x%2X ", __FUNCTION__, p_rsp->event_id);
        switch (p_rsp->event_id)
        {
            case AVRC_EVT_PLAY_STATUS_CHANGE:
                /* Start timer to get play status periodically
                 * if the play state is playing.
                 */
                if (p_rsp->param.play_status == AVRC_PLAYSTATE_PLAYING)
                {
                    rc_start_play_status_timer();
                }
                HAL_CBACK(bt_rc_ctrl_callbacks, play_status_changed_cb,
                    &rc_addr, p_rsp->param.play_status);
                break;

            case AVRC_EVT_TRACK_CHANGE:
                if (rc_is_track_id_valid (p_rsp->param.track) != true)
                {
                    break;
                }
                else
                {
                    UINT8 *p_data = p_rsp->param.track;
                    /* Update the UID for current track
                     * Attributes will be fetched after the AVRCP procedure
                     */
                    BE_STREAM_TO_UINT64(btif_rc_cb[0].rc_playing_uid, p_data);
                }
                break;

            case AVRC_EVT_APP_SETTING_CHANGE:
                break;

            case AVRC_EVT_NOW_PLAYING_CHANGE:
                break;

            case AVRC_EVT_AVAL_PLAYERS_CHANGE:
                break;

            case AVRC_EVT_ADDR_PLAYER_CHANGE:
                break;

            case AVRC_EVT_UIDS_CHANGE:
                break;

            case AVRC_EVT_TRACK_REACHED_END:
            case AVRC_EVT_TRACK_REACHED_START:
            case AVRC_EVT_PLAY_POS_CHANGED:
            case AVRC_EVT_BATTERY_STATUS_CHANGE:
            case AVRC_EVT_SYSTEM_STATUS_CHANGE:
            default:
                BTIF_TRACE_ERROR("%s  Unhandled interim response 0x%2X", __FUNCTION__,
                    p_rsp->event_id);
                return;
        }
        list_foreach(btif_rc_cb[0].rc_supported_event_list,
                iterate_supported_event_list_for_interim_rsp,
                &p_rsp->event_id);

        node = list_begin(btif_rc_cb[0].rc_supported_event_list);
        while (node != NULL)
        {
            p_event = (btif_rc_supported_event_t *)list_node(node);
            if ((p_event != NULL) && (p_event->status == eNOT_REGISTERED))
            {
                register_for_event_notification(p_event);
                break;
            }
            node = list_next (node);
            p_event = NULL;
        }
        /* Registered for all events, we can request application settings */
        if ((p_event == NULL) && (btif_rc_cb[0].rc_app_settings.query_started == false))
        {
            /* we need to do this only if remote TG supports
             * player application settings
             */
            btif_rc_cb[0].rc_app_settings.query_started = TRUE;
            if (btif_rc_cb[0].rc_features & BTA_AV_FEAT_APP_SETTING)
            {
                list_player_app_setting_attrib_cmd();
            }
            else
            {
                BTIF_TRACE_DEBUG("%s App setting not supported, complete procedure", __FUNCTION__);
                rc_ctrl_procedure_complete();
            }
        }
    }
    else if (pmeta_msg->code == AVRC_RSP_CHANGED)
    {
        btif_rc_supported_event_t *p_event;
        list_node_t *node;

        BTIF_TRACE_DEBUG("%s Notification completed : 0x%2X ", __FUNCTION__,
            p_rsp->event_id);

        node = list_begin(btif_rc_cb[0].rc_supported_event_list);
        while (node != NULL)
        {
            p_event = (btif_rc_supported_event_t *)list_node(node);
            if ((p_event != NULL) && (p_event->event_id == p_rsp->event_id))
            {
                p_event->status = eNOT_REGISTERED;
                register_for_event_notification(p_event);
                break;
            }
            node = list_next (node);
        }

        switch (p_rsp->event_id)
        {
            case AVRC_EVT_PLAY_STATUS_CHANGE:
                /* Start timer to get play status periodically
                 * if the play state is playing.
                 */
                if (p_rsp->param.play_status == AVRC_PLAYSTATE_PLAYING)
                {
                    rc_start_play_status_timer();
                }
                else
                {
                    rc_stop_play_status_timer();
                }
                HAL_CBACK(bt_rc_ctrl_callbacks, play_status_changed_cb,
                    &rc_addr, p_rsp->param.play_status);
                break;

            case AVRC_EVT_TRACK_CHANGE:
                if (rc_is_track_id_valid (p_rsp->param.track) != true)
                {
                    break;
                }
                UINT8 *p_data = p_rsp->param.track;
                BE_STREAM_TO_UINT64(btif_rc_cb[0].rc_playing_uid, p_data);
                /* Fix for below Klowkwork Issue at line 4509
                 * Array 'attr_list' of size 7 may use index value(s) 7 */
                get_element_attribute_cmd (sizeof(attr_list)/sizeof(UINT32), attr_list);
                break;

            case AVRC_EVT_APP_SETTING_CHANGE:
            {
                btrc_player_settings_t app_settings;
                UINT16 xx;

                app_settings.num_attr = p_rsp->param.player_setting.num_attr;
                for (xx = 0; xx < app_settings.num_attr; xx++)
                {
                    app_settings.attr_ids[xx] = p_rsp->param.player_setting.attr_id[xx];
                    app_settings.attr_values[xx] = p_rsp->param.player_setting.attr_value[xx];
                }
                HAL_CBACK(bt_rc_ctrl_callbacks, playerapplicationsetting_changed_cb,
                    &rc_addr, &app_settings);
            }
                break;

            case AVRC_EVT_NOW_PLAYING_CHANGE:
                break;

            case AVRC_EVT_AVAL_PLAYERS_CHANGE:
                break;

            case AVRC_EVT_ADDR_PLAYER_CHANGE:
                break;

            case AVRC_EVT_UIDS_CHANGE:
                break;

            case AVRC_EVT_TRACK_REACHED_END:
            case AVRC_EVT_TRACK_REACHED_START:
            case AVRC_EVT_PLAY_POS_CHANGED:
            case AVRC_EVT_BATTERY_STATUS_CHANGE:
            case AVRC_EVT_SYSTEM_STATUS_CHANGE:
            default:
                BTIF_TRACE_ERROR("%s  Unhandled completion response 0x%2X",
                    __FUNCTION__, p_rsp->event_id);
                return;
        }
    }
}

/***************************************************************************
**
** Function         handle_app_attr_response
**
** Description      handles the the application attributes response and
**                  initiates procedure to fetch the attribute values
** Returns          None
**
***************************************************************************/
static void handle_app_attr_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_LIST_APP_ATTR_RSP *p_rsp)
{
    UINT8 xx;

    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        BTIF_TRACE_ERROR("%s Error getting Player application settings: 0x%2X",
                __FUNCTION__, p_rsp->status);
        rc_ctrl_procedure_complete();
        return;
    }

    for (xx = 0; xx < p_rsp->num_attr; xx++)
    {
        UINT8 st_index;

        if (p_rsp->attrs[xx] > AVRC_PLAYER_SETTING_LOW_MENU_EXT)
        {
            st_index = btif_rc_cb[0].rc_app_settings.num_ext_attrs;
            btif_rc_cb[0].rc_app_settings.ext_attrs[st_index].attr_id = p_rsp->attrs[xx];
            btif_rc_cb[0].rc_app_settings.num_ext_attrs++;
        }
        else
        {
            st_index = btif_rc_cb[0].rc_app_settings.num_attrs;
            btif_rc_cb[0].rc_app_settings.attrs[st_index].attr_id = p_rsp->attrs[xx];
            btif_rc_cb[0].rc_app_settings.num_attrs++;
        }
    }
    btif_rc_cb[0].rc_app_settings.attr_index = 0;
    btif_rc_cb[0].rc_app_settings.ext_attr_index = 0;
    btif_rc_cb[0].rc_app_settings.ext_val_index = 0;
    if (p_rsp->num_attr)
    {
        list_player_app_setting_value_cmd (btif_rc_cb[0].rc_app_settings.attrs[0].attr_id);
    }
    else
    {
        /* Complete RC procedure from here */
        rc_ctrl_procedure_complete();
        BTIF_TRACE_ERROR("%s No Player application settings found",
                __FUNCTION__);
    }
}

/***************************************************************************
**
** Function         handle_app_val_response
**
** Description      handles the the attributes value response and if extended
**                  menu is available, it initiates query for the attribute
**                  text. If not, it initiates procedure to get the current
**                  attribute values and calls the HAL callback for provding
**                  application settings information.
** Returns          None
**
***************************************************************************/
static void handle_app_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_LIST_APP_VALUES_RSP *p_rsp)
{
    UINT8 xx, attr_index;
    UINT8 attrs[AVRC_MAX_APP_ATTR_SIZE];
    btif_rc_player_app_settings_t *p_app_settings;
    bt_bdaddr_t rc_addr;

    /* Todo: Do we need to retry on command timeout */
    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        BTIF_TRACE_ERROR("%s Error fetching attribute values 0x%02X",
                __FUNCTION__, p_rsp->status);
        return;
    }

    p_app_settings = &btif_rc_cb[0].rc_app_settings;
    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    if (p_app_settings->attr_index < p_app_settings->num_attrs)
    {
        attr_index = p_app_settings->attr_index;
        p_app_settings->attrs[attr_index].num_val = p_rsp->num_val;
        for (xx = 0; xx < p_rsp->num_val; xx++)
        {
            p_app_settings->attrs[attr_index].attr_val[xx] = p_rsp->vals[xx];
        }
        attr_index++;
        p_app_settings->attr_index++;
        if (attr_index < p_app_settings->num_attrs)
        {
            list_player_app_setting_value_cmd (p_app_settings->attrs[p_app_settings->attr_index].attr_id);
        }
        else if (p_app_settings->ext_attr_index < p_app_settings->num_ext_attrs)
        {
            attr_index = 0;
            p_app_settings->ext_attr_index = 0;
            list_player_app_setting_value_cmd (p_app_settings->ext_attrs[attr_index].attr_id);
        }
        /* Klockwork fix for below line 4661
         * Array 'attrs' of size 16 may use index value(s) 16..254*/
        else
        {
            if (p_app_settings->num_attrs > AVRC_MAX_APP_ATTR_SIZE)
                p_app_settings->num_attrs = AVRC_MAX_APP_ATTR_SIZE;
            for (xx = 0; xx < p_app_settings->num_attrs; xx++)
            {
                attrs[xx] = p_app_settings->attrs[xx].attr_id;
            }
            get_player_app_setting_cmd (p_app_settings->num_attrs, attrs);
            HAL_CBACK (bt_rc_ctrl_callbacks, playerapplicationsetting_cb, &rc_addr,
                        p_app_settings->num_attrs, p_app_settings->attrs, 0, NULL);
        }
    }
    else if (p_app_settings->ext_attr_index < p_app_settings->num_ext_attrs)
    {
        attr_index = p_app_settings->ext_attr_index;
        p_app_settings->ext_attrs[attr_index].num_val = p_rsp->num_val;
        for (xx = 0; xx < p_rsp->num_val; xx++)
        {
            p_app_settings->ext_attrs[attr_index].ext_attr_val[xx].val = p_rsp->vals[xx];
        }
        attr_index++;
        p_app_settings->ext_attr_index++;
        list_player_app_setting_value_cmd (p_app_settings->ext_attrs[p_app_settings->ext_attr_index].attr_id);
    }
}

/***************************************************************************
**
** Function         handle_app_cur_val_response
**
** Description      handles the the get attributes value response.
**
** Returns          None
**
***************************************************************************/
static void handle_app_cur_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_CUR_APP_VALUE_RSP *p_rsp)
{
    btrc_player_settings_t app_settings;
    bt_bdaddr_t rc_addr;
    UINT16 xx;

    /* Todo: Do we need to retry on command timeout */
    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        BTIF_TRACE_ERROR("%s Error fetching current settings: 0x%02X",
                __FUNCTION__, p_rsp->status);
        return;
    }

    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    app_settings.num_attr = p_rsp->num_val;
    for (xx = 0; xx < app_settings.num_attr; xx++)
    {
        app_settings.attr_ids[xx] = p_rsp->p_vals[xx].attr_id;
        app_settings.attr_values[xx] = p_rsp->p_vals[xx].attr_val;
    }
    HAL_CBACK(bt_rc_ctrl_callbacks, playerapplicationsetting_changed_cb,
        &rc_addr, &app_settings);
    /* Application settings are fetched only once for initial values
     * initiate anything that follows after RC procedure.
     * Defer it if browsing is supported till players query
     */
    rc_ctrl_procedure_complete ();
    osi_free_and_reset((void **)&p_rsp->p_vals);
}

/***************************************************************************
**
** Function         handle_app_attr_txt_response
**
** Description      handles the the get attributes text response, if fails
**                  calls HAL callback with just normal settings and initiates
**                  query for current settings else initiates query for value text
** Returns          None
**
***************************************************************************/
static void handle_app_attr_txt_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp)
{
    UINT8 xx;
    UINT8 vals[AVRC_MAX_APP_ATTR_SIZE];
    btif_rc_player_app_settings_t *p_app_settings;
    bt_bdaddr_t rc_addr;

    p_app_settings = &btif_rc_cb[0].rc_app_settings;
    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    /* Todo: Do we need to retry on command timeout */
    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        UINT8 attrs[AVRC_MAX_APP_ATTR_SIZE];

        BTIF_TRACE_ERROR("%s Error fetching attribute text: 0x%02X",
                __FUNCTION__, p_rsp->status);
        /* Not able to fetch Text for extended Menu, skip the process
         * and cleanup used memory. Proceed to get the current settings
         * for standard attributes.
         */
        p_app_settings->num_ext_attrs = 0;
        for (xx = 0; xx < p_app_settings->ext_attr_index; xx++)
            osi_free_and_reset((void **)&p_app_settings->ext_attrs[xx].p_str);
        p_app_settings->ext_attr_index = 0;
        /* Klockwork Fix for below issue at line 4765
         * Array 'attrs' of size 16 may use index value(s) 16..254 */
        for (xx = 0; xx < p_app_settings->num_attrs && xx < AVRC_MAX_APP_ATTR_SIZE; xx++)
        {
            attrs[xx] = p_app_settings->attrs[xx].attr_id;
        }
        HAL_CBACK (bt_rc_ctrl_callbacks, playerapplicationsetting_cb, &rc_addr,
                    p_app_settings->num_attrs, p_app_settings->attrs, 0, NULL);

        get_player_app_setting_cmd (xx, attrs);
        return;
    }

    for (xx = 0; xx < p_rsp->num_attr; xx++)
    {
        UINT8 x;
        for (x = 0; x < p_app_settings->num_ext_attrs; x++)
        {
            if (p_app_settings->ext_attrs[x].attr_id == p_rsp->p_attrs[xx].attr_id)
            {
                p_app_settings->ext_attrs[x].charset_id = p_rsp->p_attrs[xx].charset_id;
                p_app_settings->ext_attrs[x].str_len = p_rsp->p_attrs[xx].str_len;
                p_app_settings->ext_attrs[x].p_str = p_rsp->p_attrs[xx].p_str;
                break;
            }
        }
    }

    /* Klockwork Fix for below issue at line 4791
     * Array 'vals' of size 16 may use index value(s) 16..254*/
    for (xx = 0; xx < p_app_settings->ext_attrs[0].num_val && xx < AVRC_MAX_APP_ATTR_SIZE; xx++)
    {
        vals[xx] = p_app_settings->ext_attrs[0].ext_attr_val[xx].val;
    }
    get_player_app_setting_value_text_cmd(vals, xx);
}


/***************************************************************************
**
** Function         handle_app_attr_val_txt_response
**
** Description      handles the the get attributes value text response, if fails
**                  calls HAL callback with just normal settings and initiates
**                  query for current settings
** Returns          None
**
***************************************************************************/
static void handle_app_attr_val_txt_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp)
{
    UINT8 xx, attr_index;
    UINT8 vals[AVRC_MAX_APP_ATTR_SIZE];
    UINT8 attrs[AVRC_MAX_APP_ATTR_SIZE];
    btif_rc_player_app_settings_t *p_app_settings;
    bt_bdaddr_t rc_addr;

    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);
    p_app_settings = &btif_rc_cb[0].rc_app_settings;

    /* Todo: Do we need to retry on command timeout */
    if (p_rsp->status != AVRC_STS_NO_ERROR)
    {
        UINT8 attrs[AVRC_MAX_APP_ATTR_SIZE];

        BTIF_TRACE_ERROR("%s Error fetching attribute value text: 0x%02X",
                __FUNCTION__, p_rsp->status);

        /* Not able to fetch Text for extended Menu, skip the process
         * and cleanup used memory. Proceed to get the current settings
         * for standard attributes.
         */
        p_app_settings->num_ext_attrs = 0;
        for (xx = 0; xx < p_app_settings->ext_attr_index; xx++)
        {
            int x;
            btrc_player_app_ext_attr_t *p_ext_attr = &p_app_settings->ext_attrs[xx];

            for (x = 0; x < p_ext_attr->num_val; x++)
                osi_free_and_reset((void **)&p_ext_attr->ext_attr_val[x].p_str);
            p_ext_attr->num_val = 0;
            osi_free_and_reset((void **)&p_app_settings->ext_attrs[xx].p_str);
        }
        p_app_settings->ext_attr_index = 0;

        /* Klockwork Fix for below issue 4851
         * Array 'attrss' of size 16 may use index value(s) 16..254*/
        for (xx = 0; xx < p_app_settings->num_attrs && xx < AVRC_MAX_APP_ATTR_SIZE; xx++)
        {
            attrs[xx] = p_app_settings->attrs[xx].attr_id;
        }
        HAL_CBACK (bt_rc_ctrl_callbacks, playerapplicationsetting_cb, &rc_addr,
                    p_app_settings->num_attrs, p_app_settings->attrs, 0, NULL);

        get_player_app_setting_cmd (xx, attrs);
        return;
    }

    for (xx = 0; xx < p_rsp->num_attr; xx++)
    {
        UINT8 x;
        btrc_player_app_ext_attr_t *p_ext_attr;
        p_ext_attr = &p_app_settings->ext_attrs[p_app_settings->ext_val_index];
        for (x = 0; x < p_rsp->num_attr; x++)
        {
            if (p_ext_attr->ext_attr_val[x].val == p_rsp->p_attrs[xx].attr_id)
            {
                p_ext_attr->ext_attr_val[x].charset_id = p_rsp->p_attrs[xx].charset_id;
                p_ext_attr->ext_attr_val[x].str_len = p_rsp->p_attrs[xx].str_len;
                p_ext_attr->ext_attr_val[x].p_str = p_rsp->p_attrs[xx].p_str;
                break;
            }
        }
    }
    p_app_settings->ext_val_index++;

    if (p_app_settings->ext_val_index < p_app_settings->num_ext_attrs)
    {
        attr_index = p_app_settings->ext_val_index;
        /* Klockwork Fix for below issue 4883
         * Array 'vals' of size 16 may use index value(s) 16..254*/
        for (xx = 0; xx < p_app_settings->ext_attrs[attr_index].num_val && xx < AVRC_MAX_APP_ATTR_SIZE; xx++)
        {
            vals[xx] = p_app_settings->ext_attrs[attr_index].ext_attr_val[xx].val;
        }
        get_player_app_setting_value_text_cmd(vals, xx);
    }
    else
    {
        UINT8 x;

        for (xx = 0; ((xx < AVRC_MAX_APP_ATTR_SIZE) && (xx < p_app_settings->num_attrs)); xx++)
        {
            attrs[xx] = p_app_settings->attrs[xx].attr_id;
        }
        for (x = 0; ((xx + x < AVRC_MAX_APP_ATTR_SIZE) && (x < p_app_settings->num_ext_attrs)); x++)
        {
            attrs[xx+x] = p_app_settings->ext_attrs[x].attr_id;
        }
        HAL_CBACK (bt_rc_ctrl_callbacks, playerapplicationsetting_cb, &rc_addr,
                    p_app_settings->num_attrs, p_app_settings->attrs,
                    p_app_settings->num_ext_attrs, p_app_settings->ext_attrs);
        if(xx+x > AVRC_MAX_APP_ATTR_SIZE)
        {
            get_player_app_setting_cmd (AVRC_MAX_APP_ATTR_SIZE, attrs);
        }
        else
        {
           get_player_app_setting_cmd (xx + x, attrs);
        }

        /* Free the application settings information after sending to
         * application.
         */
        for (xx = 0; xx < p_app_settings->ext_attr_index; xx++)
        {
            int x;
            btrc_player_app_ext_attr_t *p_ext_attr = &p_app_settings->ext_attrs[xx];

            for (x = 0; x < p_ext_attr->num_val; x++)
                osi_free_and_reset((void **)&p_ext_attr->ext_attr_val[x].p_str);
            p_ext_attr->num_val = 0;
            osi_free_and_reset((void **)&p_app_settings->ext_attrs[xx].p_str);
        }
        p_app_settings->num_attrs = 0;
    }
}

/***************************************************************************
**
** Function         handle_set_app_attr_val_response
**
** Description      handles the the set attributes value response, if fails
**                  calls HAL callback to indicate the failure
** Returns          None
**
***************************************************************************/
static void handle_set_app_attr_val_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_RSP *p_rsp)
{
    uint8_t accepted = 0;
    bt_bdaddr_t rc_addr;

    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    /* For timeout pmeta_msg will be NULL, else we need to
     * check if this is accepted by TG
     */
    if (pmeta_msg && (pmeta_msg->code == AVRC_RSP_ACCEPT))
    {
        accepted = 1;
    }
    HAL_CBACK(bt_rc_ctrl_callbacks, setplayerappsetting_rsp_cb, &rc_addr, accepted);
}

/***************************************************************************
**
** Function         handle_get_elem_attr_response
**
** Description      handles the the element attributes response, calls
**                  HAL callback to update track change information.
** Returns          None
**
***************************************************************************/
static void handle_get_elem_attr_response (tBTA_AV_META_MSG *pmeta_msg,
                                           tAVRC_GET_ELEM_ATTRS_RSP *p_rsp)
{
    if (p_rsp->status == AVRC_STS_NO_ERROR) {
        bt_bdaddr_t rc_addr;
        size_t buf_size = p_rsp->num_attr * sizeof(btrc_element_attr_val_t);
        btrc_element_attr_val_t *p_attr =
            (btrc_element_attr_val_t *)osi_calloc(buf_size);

        bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

        for (int i = 0; i < p_rsp->num_attr; i++) {
            p_attr[i].attr_id = p_rsp->p_attrs[i].attr_id;
            /* Todo. Legth limit check to include null */
            if (p_rsp->p_attrs[i].name.str_len &&
                p_rsp->p_attrs[i].name.p_str) {
                memcpy(p_attr[i].text, p_rsp->p_attrs[i].name.p_str,
                       p_rsp->p_attrs[i].name.str_len);
                osi_free_and_reset((void **)&p_rsp->p_attrs[i].name.p_str);
            }
        }
        HAL_CBACK(bt_rc_ctrl_callbacks, track_changed_cb,
                  &rc_addr, p_rsp->num_attr, p_attr);
        osi_free(p_attr);
    } else if (p_rsp->status == BTIF_RC_STS_TIMEOUT) {
        /* Retry for timeout case, this covers error handling
         * for continuation failure also.
         */
        UINT32 attr_list[] = {
            AVRC_MEDIA_ATTR_ID_TITLE,
            AVRC_MEDIA_ATTR_ID_ARTIST,
            AVRC_MEDIA_ATTR_ID_ALBUM,
            AVRC_MEDIA_ATTR_ID_TRACK_NUM,
            AVRC_MEDIA_ATTR_ID_NUM_TRACKS,
            AVRC_MEDIA_ATTR_ID_GENRE,
            AVRC_MEDIA_ATTR_ID_PLAYING_TIME
            };
        /* Fix for below Klowkwork Issue at line 4996
         * Array 'attr_list' of size 7 may use index value(s) 7 */
        get_element_attribute_cmd (sizeof(attr_list)/sizeof(UINT32), attr_list);
    } else {
        BTIF_TRACE_ERROR("%s: Error in get element attr procedure %d",
                         __func__, p_rsp->status);
    }
}

/***************************************************************************
**
** Function         handle_get_playstatus_response
**
** Description      handles the the play status response, calls
**                  HAL callback to update play position.
** Returns          None
**
***************************************************************************/
static void handle_get_playstatus_response (tBTA_AV_META_MSG *pmeta_msg, tAVRC_GET_PLAY_STATUS_RSP *p_rsp)
{
    bt_bdaddr_t rc_addr;

    bdcpy(rc_addr.address, btif_rc_cb[0].rc_addr);

    if (p_rsp->status == AVRC_STS_NO_ERROR)
    {
        HAL_CBACK(bt_rc_ctrl_callbacks, play_position_changed_cb,
            &rc_addr, p_rsp->song_len, p_rsp->song_pos, p_rsp->play_status);
    }
    else
    {
        BTIF_TRACE_ERROR("%s: Error in get play status procedure %d",
            __FUNCTION__, p_rsp->status);
    }
}

/***************************************************************************
**
** Function         clear_cmd_timeout
**
** Description      helper function to stop the command timeout timer
** Returns          None
**
***************************************************************************/
static void clear_cmd_timeout (UINT8 label)
{
    rc_transaction_t *p_txn;

    p_txn = get_transaction_by_lbl (label);
    if (p_txn == NULL)
    {
        BTIF_TRACE_ERROR("%s: Error in transaction label lookup", __FUNCTION__);
        return;
    }

    if (p_txn->txn_timer != NULL)
        alarm_cancel(p_txn->txn_timer);
}

/***************************************************************************
**
** Function         handle_avk_rc_metamsg_rsp
**
** Description      Handle RC metamessage response
**
** Returns          void
**
***************************************************************************/
static void handle_avk_rc_metamsg_rsp(tBTA_AV_META_MSG *pmeta_msg)
{
    tAVRC_RESPONSE    avrc_response = {0};
    UINT8             scratch_buf[512] = {0};// this variable is unused
    UINT16            buf_len;
    tAVRC_STS         status;

    BTIF_TRACE_DEBUG("%s opcode = %d rsp_code = %d  ", __FUNCTION__,
                        pmeta_msg->p_msg->hdr.opcode, pmeta_msg->code);

    if ((AVRC_OP_VENDOR == pmeta_msg->p_msg->hdr.opcode)&&
                (pmeta_msg->code >= AVRC_RSP_NOT_IMPL)&&
                (pmeta_msg->code <= AVRC_RSP_INTERIM))
    {
        status = AVRC_Ctrl_ParsResponse(pmeta_msg->p_msg, &avrc_response, scratch_buf, &buf_len);
        BTIF_TRACE_DEBUG("%s parse status %d pdu = %d rsp_status = %d",
                         __FUNCTION__, status, avrc_response.pdu,
                         pmeta_msg->p_msg->vendor.hdr.ctype);

        switch (avrc_response.pdu)
        {
            case AVRC_PDU_REGISTER_NOTIFICATION:
                handle_notification_response(pmeta_msg, &avrc_response.reg_notif);
                if (pmeta_msg->code == AVRC_RSP_INTERIM)
                {
                    /* Don't free the transaction Id */
                    clear_cmd_timeout (pmeta_msg->label);
                    return;
                }
                break;

            case AVRC_PDU_GET_CAPABILITIES:
                handle_get_capability_response(pmeta_msg, &avrc_response.get_caps);
                break;

            case AVRC_PDU_LIST_PLAYER_APP_ATTR:
                handle_app_attr_response(pmeta_msg, &avrc_response.list_app_attr);
                break;

            case AVRC_PDU_LIST_PLAYER_APP_VALUES:
                handle_app_val_response(pmeta_msg, &avrc_response.list_app_values);
                break;

            case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
                handle_app_cur_val_response(pmeta_msg, &avrc_response.get_cur_app_val);
                break;

            case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
                handle_app_attr_txt_response(pmeta_msg, &avrc_response.get_app_attr_txt);
                break;

            case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
                handle_app_attr_val_txt_response(pmeta_msg, &avrc_response.get_app_val_txt);
                break;

            case AVRC_PDU_SET_PLAYER_APP_VALUE:
                handle_set_app_attr_val_response(pmeta_msg, &avrc_response.set_app_val);
                break;

            case AVRC_PDU_GET_ELEMENT_ATTR:
                handle_get_elem_attr_response(pmeta_msg, &avrc_response.get_elem_attrs);
                break;

            case AVRC_PDU_GET_PLAY_STATUS:
                handle_get_playstatus_response(pmeta_msg, &avrc_response.get_play_status);
                break;
        }
        release_transaction(pmeta_msg->label);
    }
    else
    {
        BTIF_TRACE_DEBUG("%s:Invalid Vendor Command  code: %d len: %d. Not processing it.",
            __FUNCTION__, pmeta_msg->code, pmeta_msg->len);
        return;
    }
}

/***************************************************************************
**
** Function         handle_avk_rc_metamsg_cmd
**
** Description      Handle RC metamessage response
**
** Returns          void
**
***************************************************************************/
static void handle_avk_rc_metamsg_cmd(tBTA_AV_META_MSG *pmeta_msg)
{
    tAVRC_COMMAND    avrc_cmd = {0};
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    BTIF_TRACE_DEBUG("%s opcode = %d rsp_code = %d  ",__FUNCTION__,
                     pmeta_msg->p_msg->hdr.opcode,pmeta_msg->code);
    if ((AVRC_OP_VENDOR==pmeta_msg->p_msg->hdr.opcode)&&
                (pmeta_msg->code <= AVRC_CMD_GEN_INQ))
    {
        status = AVRC_Ctrl_ParsCommand(pmeta_msg->p_msg, &avrc_cmd);
        BTIF_TRACE_DEBUG("%s Received vendor command.code %d, PDU %d label %d",
                         __FUNCTION__, pmeta_msg->code, avrc_cmd.pdu, pmeta_msg->label);

        if (status != AVRC_STS_NO_ERROR)
        {
            /* return error */
            BTIF_TRACE_WARNING("%s: Error in parsing received metamsg command. status: 0x%02x",
                __FUNCTION__, status);
            send_reject_response(pmeta_msg->rc_handle, pmeta_msg->label, avrc_cmd.pdu, status);
        }
        else
        {
            if (avrc_cmd.pdu == AVRC_PDU_REGISTER_NOTIFICATION)
            {
                UINT8 event_id = avrc_cmd.reg_notif.event_id;
                BTIF_TRACE_EVENT("%s:Register notification event_id: %s",
                        __FUNCTION__, dump_rc_notification_event_id(event_id));
            }
            else if (avrc_cmd.pdu == AVRC_PDU_SET_ABSOLUTE_VOLUME)
            {
                BTIF_TRACE_EVENT("%s: Abs Volume Cmd Recvd", __FUNCTION__);
            }
            btif_rc_ctrl_upstreams_rsp_cmd(avrc_cmd.pdu, &avrc_cmd, pmeta_msg->label);
        }
    }
    else
    {
      BTIF_TRACE_DEBUG("%s:Invalid Vendor Command  code: %d len: %d. Not processing it.",
                       __FUNCTION__, pmeta_msg->code, pmeta_msg->len);
        return;
    }
}
#endif

static void btif_rc_handler_wrapper(UINT16 event, char* p_param)
{
    btif_rc_handler((tBTA_AV_EVT)event, (tBTA_AV *)p_param);
}
/***************************************************************************
**
** Function         cleanup
**
** Description      Closes the AVRC interface
**
** Returns          void
**
***************************************************************************/
static void cleanup()
{
    BTIF_TRACE_EVENT("## RC:  %s ##", __FUNCTION__);
    btif_transfer_context(btif_rc_handler_wrapper, BTIF_AV_CLEANUP_REQ_EVT,
            NULL, 0, NULL);
    BTIF_TRACE_EVENT("## RC: %s ## completed", __FUNCTION__);
}

/***************************************************************************
**
** Function         cleanup_ctrl
**
** Description      Closes the AVRC Controller interface
**
** Returns          void
**
***************************************************************************/
static void cleanup_ctrl()
{
    BTIF_TRACE_EVENT("## %s ##", __FUNCTION__);

    if (bt_rc_ctrl_callbacks)
    {
        bt_rc_ctrl_callbacks = NULL;
    }
    alarm_free(btif_rc_cb[0].rc_play_status_timer);
    memset(&btif_rc_cb, 0, sizeof(btif_rc_cb_t));
    lbl_destroy();
    BTIF_TRACE_EVENT("## %s ## completed", __FUNCTION__);
}

/***************************************************************************
**
** Function         getcapabilities_cmd
**
** Description      GetCapabilties from Remote(Company_ID, Events_Supported)
**
** Returns          void
**
***************************************************************************/
static bt_status_t getcapabilities_cmd (uint8_t cap_id)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: cap_id %d", __FUNCTION__, cap_id);
    CHECK_RC_CONNECTED
    bt_status_t tran_status=get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

     tAVRC_COMMAND avrc_cmd = {0};
     BT_HDR *p_msg = NULL;
     avrc_cmd.get_caps.opcode = AVRC_OP_VENDOR;
     avrc_cmd.get_caps.capability_id = cap_id;
     avrc_cmd.get_caps.pdu = AVRC_PDU_GET_CAPABILITIES;
     avrc_cmd.get_caps.status = AVRC_STS_NO_ERROR;
     status = AVRC_BldCommand(&avrc_cmd, &p_msg);
     if ((status == AVRC_STS_NO_ERROR)&&(p_msg != NULL))
     {
         UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
         BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                            __FUNCTION__,p_transaction->lbl);
         BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,AVRC_CMD_STATUS,
                                                          data_start, p_msg->len);
         status =  BT_STATUS_SUCCESS;
         start_status_command_timer (AVRC_PDU_GET_CAPABILITIES, p_transaction);
     }
     else
     {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                             __FUNCTION__, status);
     }
     osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         list_player_app_setting_attrib_cmd
**
** Description      Get supported List Player Attributes
**
** Returns          void
**
***************************************************************************/
static bt_status_t list_player_app_setting_attrib_cmd(void)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: ", __FUNCTION__);
    CHECK_RC_CONNECTED
    bt_status_t tran_status=get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

     tAVRC_COMMAND avrc_cmd = {0};
     BT_HDR *p_msg = NULL;
     avrc_cmd.list_app_attr.opcode = AVRC_OP_VENDOR;
     avrc_cmd.list_app_attr.pdu = AVRC_PDU_LIST_PLAYER_APP_ATTR;
     avrc_cmd.list_app_attr.status = AVRC_STS_NO_ERROR;
     status = AVRC_BldCommand(&avrc_cmd, &p_msg);
     if ((status == AVRC_STS_NO_ERROR)&&(p_msg != NULL))
     {
         UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
         BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                            __FUNCTION__,p_transaction->lbl);
         BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,AVRC_CMD_STATUS,
                                                          data_start, p_msg->len);
         status =  BT_STATUS_SUCCESS;
         start_status_command_timer (AVRC_PDU_LIST_PLAYER_APP_ATTR, p_transaction);
     }
     else
     {

         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
     }
     osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         list_player_app_setting_value_cmd
**
** Description      Get values of supported Player Attributes
**
** Returns          void
**
***************************************************************************/
static bt_status_t list_player_app_setting_value_cmd(uint8_t attrib_id)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction=NULL;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: attrib_id %d", __FUNCTION__, attrib_id);
    CHECK_RC_CONNECTED
    bt_status_t tran_status=get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

     tAVRC_COMMAND avrc_cmd = {0};
     BT_HDR *p_msg = NULL;
     avrc_cmd.list_app_values.attr_id = attrib_id;
     avrc_cmd.list_app_values.opcode = AVRC_OP_VENDOR;
     avrc_cmd.list_app_values.pdu = AVRC_PDU_LIST_PLAYER_APP_VALUES;
     avrc_cmd.list_app_values.status = AVRC_STS_NO_ERROR;
     status = AVRC_BldCommand(&avrc_cmd, &p_msg);
     if ((status == AVRC_STS_NO_ERROR) && (p_msg != NULL))
     {
         UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
         BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                            __FUNCTION__,p_transaction->lbl);
         BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,AVRC_CMD_STATUS,
                               data_start, p_msg->len);
         status =  BT_STATUS_SUCCESS;
         start_status_command_timer (AVRC_PDU_LIST_PLAYER_APP_VALUES, p_transaction);
     }
     else
     {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x", __FUNCTION__, status);
     }
     osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         get_player_app_setting_cmd
**
** Description      Get current values of Player Attributes
**
** Returns          void
**
***************************************************************************/
static bt_status_t get_player_app_setting_cmd(uint8_t num_attrib, uint8_t* attrib_ids)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
    int count  = 0;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: num attrib_id %d", __FUNCTION__, num_attrib);
    CHECK_RC_CONNECTED
    bt_status_t tran_status=get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

     tAVRC_COMMAND avrc_cmd = {0};
     BT_HDR *p_msg = NULL;
     avrc_cmd.get_cur_app_val.opcode = AVRC_OP_VENDOR;
     avrc_cmd.get_cur_app_val.status = AVRC_STS_NO_ERROR;
     avrc_cmd.get_cur_app_val.num_attr = num_attrib;
     avrc_cmd.get_cur_app_val.pdu = AVRC_PDU_GET_CUR_PLAYER_APP_VALUE;

     for (count = 0; (count < num_attrib) && (count < AVRC_MAX_APP_ATTR_SIZE); count++)
     {
         avrc_cmd.get_cur_app_val.attrs[count] = attrib_ids[count];
     }
     status = AVRC_BldCommand(&avrc_cmd, &p_msg);
     if ((status == AVRC_STS_NO_ERROR) && (p_msg != NULL))
     {
         UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
         BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                            __FUNCTION__,p_transaction->lbl);
         BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,AVRC_CMD_STATUS,
                          data_start, p_msg->len);
         status =  BT_STATUS_SUCCESS;
         start_status_command_timer (AVRC_PDU_GET_CUR_PLAYER_APP_VALUE, p_transaction);
     }
     else
     {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
     }
     osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         change_player_app_setting
**
** Description      Set current values of Player Attributes
**
** Returns          void
**
***************************************************************************/
static bt_status_t change_player_app_setting(bt_bdaddr_t *bd_addr, uint8_t num_attrib, uint8_t* attrib_ids, uint8_t* attrib_vals)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
    int count  = 0;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: num attrib_id %d", __FUNCTION__, num_attrib);
    CHECK_RC_CONNECTED
    bt_status_t tran_status=get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

     tAVRC_COMMAND avrc_cmd = {0};
     BT_HDR *p_msg = NULL;
     avrc_cmd.set_app_val.opcode = AVRC_OP_VENDOR;
     avrc_cmd.set_app_val.status = AVRC_STS_NO_ERROR;
     avrc_cmd.set_app_val.num_val = num_attrib;
     avrc_cmd.set_app_val.pdu = AVRC_PDU_SET_PLAYER_APP_VALUE;
     avrc_cmd.set_app_val.p_vals =
           (tAVRC_APP_SETTING *)osi_malloc(sizeof(tAVRC_APP_SETTING) * num_attrib);
     for (count = 0; count < num_attrib; count++)
     {
         avrc_cmd.set_app_val.p_vals[count].attr_id = attrib_ids[count];
         avrc_cmd.set_app_val.p_vals[count].attr_val = attrib_vals[count];
     }
     status = AVRC_BldCommand(&avrc_cmd, &p_msg);
     if ((status == AVRC_STS_NO_ERROR) && (p_msg != NULL))
     {
         UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
         BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                            __FUNCTION__,p_transaction->lbl);
         BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,AVRC_CMD_CTRL,
                              data_start, p_msg->len);
         status =  BT_STATUS_SUCCESS;
         start_control_command_timer (AVRC_PDU_SET_PLAYER_APP_VALUE, p_transaction);
     }
     else
     {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
     }
     osi_free(p_msg);
     osi_free_and_reset((void **)&avrc_cmd.set_app_val.p_vals);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         get_player_app_setting_val_text_cmd
**
** Description      Get text description for app attribute values
**
** Returns          void
**
***************************************************************************/
static bt_status_t get_player_app_setting_value_text_cmd (UINT8 *vals, UINT8 num_vals)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
    int count  = 0;
#if (AVRC_CTLR_INCLUDED == TRUE)
    tAVRC_COMMAND avrc_cmd = {0};
    BT_HDR *p_msg = NULL;
    bt_status_t tran_status;
    CHECK_RC_CONNECTED

    BTIF_TRACE_DEBUG("%s: num_vals %d", __FUNCTION__, num_vals);

    tran_status = get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

    avrc_cmd.pdu = AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT;
    avrc_cmd.get_app_val_txt.opcode = AVRC_OP_VENDOR;
    avrc_cmd.get_app_val_txt.num_val = num_vals;

    for (count = 0; count < num_vals; count++)
    {
        avrc_cmd.get_app_val_txt.vals[count] = vals[count];
    }
    status = AVRC_BldCommand(&avrc_cmd, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                         __FUNCTION__, p_transaction->lbl);
        if (p_msg != NULL)
        {
            BTA_AvVendorCmd(btif_rc_cb[0].rc_handle, p_transaction->lbl,
                    AVRC_CMD_STATUS, data_start, p_msg->len);
            status =  BT_STATUS_SUCCESS;
            start_status_command_timer (AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT, p_transaction);
        }
    }
    else
    {
        BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                __FUNCTION__, status);
    }
    osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         register_notification_cmd
**
** Description      Send Command to register for a Notification ID
**
** Returns          void
**
***************************************************************************/
static bt_status_t register_notification_cmd (UINT8 label, UINT8 event_id, UINT32 event_value)
{

    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
#if (AVRC_CTLR_INCLUDED == TRUE)
    tAVRC_COMMAND avrc_cmd = {0};
    BT_HDR *p_msg = NULL;
    CHECK_RC_CONNECTED


    BTIF_TRACE_DEBUG("%s: event_id %d  event_value", __FUNCTION__, event_id, event_value);

    avrc_cmd.reg_notif.opcode = AVRC_OP_VENDOR;
    avrc_cmd.reg_notif.status = AVRC_STS_NO_ERROR;
    avrc_cmd.reg_notif.event_id = event_id;
    avrc_cmd.reg_notif.pdu = AVRC_PDU_REGISTER_NOTIFICATION;
    avrc_cmd.reg_notif.param = event_value;
    status = AVRC_BldCommand(&avrc_cmd, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                __FUNCTION__, label);
        if (p_msg != NULL)
        {
            BTA_AvVendorCmd(btif_rc_cb[0].rc_handle, label, AVRC_CMD_NOTIF,
                    data_start, p_msg->len);
            status =  BT_STATUS_SUCCESS;
        }
    }
    else
    {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
    }
    osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         get_element_attribute_cmd
**
** Description      Get Element Attribute for  attributeIds
**
** Returns          void
**
***************************************************************************/
static bt_status_t get_element_attribute_cmd (uint8_t num_attribute, uint32_t *p_attr_ids)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction=NULL;
    int count  = 0;
#if (AVRC_CTLR_INCLUDED == TRUE)
    tAVRC_COMMAND avrc_cmd = {0};
    BT_HDR *p_msg = NULL;
    bt_status_t tran_status;
    CHECK_RC_CONNECTED

    BTIF_TRACE_DEBUG("%s: num_attribute  %d attribute_id %d",
                   __FUNCTION__, num_attribute, p_attr_ids[0]);

    tran_status = get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

    avrc_cmd.get_elem_attrs.opcode = AVRC_OP_VENDOR;
    avrc_cmd.get_elem_attrs.status = AVRC_STS_NO_ERROR;
    avrc_cmd.get_elem_attrs.num_attr = num_attribute;
    avrc_cmd.get_elem_attrs.pdu = AVRC_PDU_GET_ELEMENT_ATTR;
    for (count = 0; count < num_attribute; count++)
    {
        avrc_cmd.get_elem_attrs.attrs[count] = p_attr_ids[count];
    }

    status = AVRC_BldCommand(&avrc_cmd, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                __FUNCTION__, p_transaction->lbl);
        if (p_msg != NULL)
        {
            BTA_AvVendorCmd(btif_rc_cb[0].rc_handle, p_transaction->lbl,
                    AVRC_CMD_STATUS, data_start, p_msg->len);
            status =  BT_STATUS_SUCCESS;
            start_status_command_timer (AVRC_PDU_GET_ELEMENT_ATTR,
                    p_transaction);
        }
    }
    else
    {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
    }
    osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         get_play_status_cmd
**
** Description      Get Element Attribute for  attributeIds
**
** Returns          void
**
***************************************************************************/
static bt_status_t get_play_status_cmd(void)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    rc_transaction_t *p_transaction = NULL;
#if (AVRC_CTLR_INCLUDED == TRUE)
    tAVRC_COMMAND avrc_cmd = {0};
    BT_HDR *p_msg = NULL;
    bt_status_t tran_status;
    CHECK_RC_CONNECTED

    BTIF_TRACE_DEBUG("%s: ", __FUNCTION__);
    tran_status = get_transaction(&p_transaction);
    if (BT_STATUS_SUCCESS != tran_status)
        return BT_STATUS_FAIL;

    avrc_cmd.get_play_status.opcode = AVRC_OP_VENDOR;
    avrc_cmd.get_play_status.pdu = AVRC_PDU_GET_PLAY_STATUS;
    avrc_cmd.get_play_status.status = AVRC_STS_NO_ERROR;
    status = AVRC_BldCommand(&avrc_cmd, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                __FUNCTION__, p_transaction->lbl);
        if (p_msg != NULL)
        {
            BTA_AvVendorCmd(btif_rc_cb[0].rc_handle,p_transaction->lbl,
                    AVRC_CMD_STATUS, data_start, p_msg->len);
            status =  BT_STATUS_SUCCESS;
            start_status_command_timer (AVRC_PDU_GET_PLAY_STATUS, p_transaction);
        }
    }
    else
    {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
    }
    osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;

}

/***************************************************************************
**
** Function         set_volume_rsp
**
** Description      Rsp for SetAbsoluteVolume Command
**
** Returns          void
**
***************************************************************************/
static bt_status_t set_volume_rsp(bt_bdaddr_t *bd_addr, uint8_t abs_vol, uint8_t label)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
#if (AVRC_CTLR_INCLUDED == TRUE)
    tAVRC_RESPONSE avrc_rsp;
    BT_HDR *p_msg = NULL;
    CHECK_RC_CONNECTED

    BTIF_TRACE_DEBUG("%s: abs_vol %d", __FUNCTION__, abs_vol);

    avrc_rsp.volume.opcode = AVRC_OP_VENDOR;
    avrc_rsp.volume.pdu = AVRC_PDU_SET_ABSOLUTE_VOLUME;
    avrc_rsp.volume.status = AVRC_STS_NO_ERROR;
    avrc_rsp.volume.volume = abs_vol;
    status = AVRC_BldResponse(btif_rc_cb[0].rc_handle, &avrc_rsp, &p_msg);
    if (status == AVRC_STS_NO_ERROR)
    {
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                __FUNCTION__, btif_rc_cb[0].rc_vol_label);
        if (p_msg != NULL)
        {
            BTA_AvVendorRsp(btif_rc_cb[0].rc_handle, label,
                    BTA_AV_RSP_ACCEPT, data_start, p_msg->len, 0);
            status =  BT_STATUS_SUCCESS;
        }
    }
    else
    {
         BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                            __FUNCTION__, status);
    }
    osi_free(p_msg);
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         send_register_abs_vol_rsp
**
** Description      Rsp for Notification of Absolute Volume
**
** Returns          void
**
***************************************************************************/
static bt_status_t volume_change_notification_rsp(bt_bdaddr_t *bd_addr, btrc_notification_type_t rsp_type,
            uint8_t abs_vol, uint8_t label)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    tAVRC_RESPONSE avrc_rsp;
    BT_HDR *p_msg = NULL;
#if (AVRC_CTLR_INCLUDED == TRUE)
    BTIF_TRACE_DEBUG("%s: rsp_type  %d abs_vol %d", __func__, rsp_type, abs_vol);
    CHECK_RC_CONNECTED

    avrc_rsp.reg_notif.opcode = AVRC_OP_VENDOR;
    avrc_rsp.reg_notif.pdu = AVRC_PDU_REGISTER_NOTIFICATION;
    avrc_rsp.reg_notif.status = AVRC_STS_NO_ERROR;
    avrc_rsp.reg_notif.param.volume = abs_vol;
    avrc_rsp.reg_notif.event_id = AVRC_EVT_VOLUME_CHANGE;

    status = AVRC_BldResponse(btif_rc_cb[0].rc_handle, &avrc_rsp, &p_msg);
    if (status == AVRC_STS_NO_ERROR) {
        BTIF_TRACE_DEBUG("%s msgreq being sent out with label %d",
                         __func__, label);
        UINT8* data_start = (UINT8*)(p_msg + 1) + p_msg->offset;
        BTA_AvVendorRsp(btif_rc_cb[0].rc_handle, label,
                        (rsp_type == BTRC_NOTIFICATION_TYPE_INTERIM) ?
                            AVRC_RSP_INTERIM : AVRC_RSP_CHANGED,
                        data_start, p_msg->len, 0);
        status = BT_STATUS_SUCCESS;
    } else {
        BTIF_TRACE_ERROR("%s: failed to build command. status: 0x%02x",
                         __func__, status);
    }
    osi_free(p_msg);

#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __func__);
#endif
    return status;
}

/***************************************************************************
**
** Function         send_groupnavigation_cmd
**
** Description      Send Pass-Through command
**
** Returns          void
**
***************************************************************************/
static bt_status_t send_groupnavigation_cmd(bt_bdaddr_t *bd_addr, uint8_t key_code,
                                            uint8_t key_state)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
#if (AVRC_CTLR_INCLUDED == TRUE)
    rc_transaction_t *p_transaction=NULL;
    BTIF_TRACE_DEBUG("%s: key-code: %d, key-state: %d", __FUNCTION__,
                                                    key_code, key_state);
    CHECK_RC_CONNECTED
    if (btif_rc_cb[0].rc_features & BTA_AV_FEAT_RCTG)
    {
        bt_status_t tran_status = get_transaction(&p_transaction);
        if ((BT_STATUS_SUCCESS == tran_status) && (NULL != p_transaction)) {
             UINT8 buffer[AVRC_PASS_THRU_GROUP_LEN] = {0};
             UINT8* start = buffer;
             UINT24_TO_BE_STREAM(start, AVRC_CO_METADATA);
             *(start)++ = 0;
             UINT8_TO_BE_STREAM(start, key_code);
             BTA_AvRemoteVendorUniqueCmd(btif_rc_cb[0].rc_handle,
                                         p_transaction->lbl,
                                         (tBTA_AV_STATE)key_state, buffer,
                                         AVRC_PASS_THRU_GROUP_LEN);
             status =  BT_STATUS_SUCCESS;
             BTIF_TRACE_DEBUG("%s: succesfully sent group_navigation command to BTA",
                              __FUNCTION__);
        }
        else
        {
            status =  BT_STATUS_FAIL;
            BTIF_TRACE_DEBUG("%s: error in fetching transaction", __FUNCTION__);
        }
    }
    else
    {
        status =  BT_STATUS_FAIL;
        BTIF_TRACE_DEBUG("%s: feature not supported", __FUNCTION__);
    }
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

/***************************************************************************
**
** Function         send_passthrough_cmd
**
** Description      Send Pass-Through command
**
** Returns          void
**
***************************************************************************/
static bt_status_t send_passthrough_cmd(bt_bdaddr_t *bd_addr, uint8_t key_code, uint8_t key_state)
{
    tAVRC_STS status = BT_STATUS_UNSUPPORTED;
    /* Controller is used only for Certification purposes.
     * In normal case AVRCP controller will not be used, hence
     * updating this is required.
     */
    int index = BTIF_RC_DEFAULT_INDEX; //For RC it should be 0
#if (AVRC_CTLR_INCLUDED == TRUE)
    CHECK_RC_CONNECTED
    rc_transaction_t *p_transaction=NULL;
    BTIF_TRACE_DEBUG("%s: key-code: %d, key-state: %d", __FUNCTION__,
                                                    key_code, key_state);
    if (btif_rc_cb[index].rc_features & BTA_AV_FEAT_RCTG)
    {
        bt_status_t tran_status = get_transaction(&p_transaction);
        if (BT_STATUS_SUCCESS == tran_status && NULL != p_transaction)
        {
            BTA_AvRemoteCmd(btif_rc_cb[index].rc_handle, p_transaction->lbl,
                (tBTA_AV_RC)key_code, (tBTA_AV_STATE)key_state);
            status =  BT_STATUS_SUCCESS;
            BTIF_TRACE_DEBUG("%s: succesfully sent passthrough command to BTA", __FUNCTION__);
        }
        else
        {
            status =  BT_STATUS_FAIL;
            BTIF_TRACE_DEBUG("%s: error in fetching transaction", __FUNCTION__);
        }
    }
    else
    {
        status =  BT_STATUS_FAIL;
        BTIF_TRACE_DEBUG("%s: feature not supported", __FUNCTION__);
    }
#else
    BTIF_TRACE_DEBUG("%s: feature not enabled", __FUNCTION__);
#endif
    return status;
}

static const btrc_interface_t bt_rc_interface = {
    sizeof(bt_rc_interface),
    init,
    get_play_status_rsp,
    list_player_app_attr_rsp,     /* list_player_app_attr_rsp */
    list_player_app_value_rsp,    /* list_player_app_value_rsp */
    get_player_app_value_rsp,     /* get_player_app_value_rsp PDU 0x13*/
    get_player_app_attr_text_rsp, /* get_player_app_attr_text_rsp */
    get_player_app_value_text_rsp,/* get_player_app_value_text_rsp */
    get_element_attr_rsp,
    set_player_app_value_rsp,     /* set_player_app_value_rsp */
    register_notification_rsp,
    set_volume,
    get_folderitem_rsp,
    set_addrplayer_rsp,
    set_browseplayer_rsp,
    changepath_rsp,
    playitem_rsp,
    get_itemattr_rsp,
    is_device_active_in_handoff,
    get_total_items_rsp,
    cleanup,
};

static const btrc_ctrl_interface_t bt_rc_ctrl_interface = {
    sizeof(bt_rc_ctrl_interface),
    init_ctrl,
    send_passthrough_cmd,
    send_groupnavigation_cmd,
    change_player_app_setting,
    set_volume_rsp,
    volume_change_notification_rsp,
    cleanup_ctrl,
};

/*******************************************************************************
**
** Function         btif_rc_get_interface
**
** Description      Get the AVRCP Target callback interface
**
** Returns          btav_interface_t
**
*******************************************************************************/
const btrc_interface_t *btif_rc_get_interface(void)
{
    BTIF_TRACE_EVENT("%s", __FUNCTION__);
    return &bt_rc_interface;
}

/*******************************************************************************
**
** Function         btif_rc_ctrl_get_interface
**
** Description      Get the AVRCP Controller callback interface
**
** Returns          btav_interface_t
**
*******************************************************************************/
const btrc_ctrl_interface_t *btif_rc_ctrl_get_interface(void)
{
    BTIF_TRACE_EVENT("%s", __FUNCTION__);
    return &bt_rc_ctrl_interface;
}

/*******************************************************************************
**      Function         initialize_transaction
**
**      Description    Initializes fields of the transaction structure
**
**      Returns          void
*******************************************************************************/
static void initialize_transaction(int lbl)
{
    pthread_mutex_lock(&device.lbllock);
    if (lbl < MAX_TRANSACTIONS_PER_SESSION) {
        if (alarm_is_scheduled(device.transaction[lbl].txn_timer)) {
            clear_cmd_timeout(lbl);
        }
        device.transaction[lbl].lbl = lbl;
        device.transaction[lbl].in_use=FALSE;
        device.transaction[lbl].handle=0;
    }
    pthread_mutex_unlock(&device.lbllock);
}

/*******************************************************************************
**      Function         lbl_init
**
**      Description    Initializes label structures and mutexes.
**
**      Returns         void
*******************************************************************************/
void lbl_init()
{
    memset(&device,0,sizeof(rc_device_t));
    pthread_mutexattr_t attr;
    pthread_mutexattr_init(&attr);
    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
    pthread_mutex_init(&(device.lbllock), &attr);
    pthread_mutexattr_destroy(&attr);
    init_all_transactions();
}

/*******************************************************************************
**
** Function         init_all_transactions
**
** Description    Initializes all transactions
**
** Returns          void
*******************************************************************************/
void init_all_transactions()
{
    UINT8 txn_indx=0;
    for(txn_indx=0; txn_indx < MAX_TRANSACTIONS_PER_SESSION; txn_indx++)
    {
        initialize_transaction(txn_indx);
    }
}

/*******************************************************************************
**
** Function         get_transaction_by_lbl
**
** Description    Will return a transaction based on the label. If not inuse
**                     will return an error.
**
** Returns          bt_status_t
*******************************************************************************/
rc_transaction_t *get_transaction_by_lbl(UINT8 lbl)
{
    rc_transaction_t *transaction = NULL;
    pthread_mutex_lock(&device.lbllock);

    /* Determine if this is a valid label */
    if (lbl < MAX_TRANSACTIONS_PER_SESSION)
    {
        if (FALSE==device.transaction[lbl].in_use)
        {
            transaction = NULL;
        }
        else
        {
            transaction = &(device.transaction[lbl]);
            BTIF_TRACE_DEBUG("%s: Got transaction.label: %d",__FUNCTION__,lbl);
        }
    }

    pthread_mutex_unlock(&device.lbllock);
    return transaction;
}

/*******************************************************************************
**
** Function         get_transaction
**
** Description    Obtains the transaction details.
**
** Returns          bt_status_t
*******************************************************************************/

bt_status_t  get_transaction(rc_transaction_t **ptransaction)
{
    bt_status_t result = BT_STATUS_NOMEM;
    UINT8 i=0;
    pthread_mutex_lock(&device.lbllock);

    // Check for unused transactions
    for (i=0; i<MAX_TRANSACTIONS_PER_SESSION; i++)
    {
        if (FALSE==device.transaction[i].in_use)
        {
            BTIF_TRACE_DEBUG("%s:Got transaction.label: %d",__FUNCTION__,device.transaction[i].lbl);
            device.transaction[i].in_use = TRUE;
            *ptransaction = &(device.transaction[i]);
            result = BT_STATUS_SUCCESS;
            break;
        }
    }

    pthread_mutex_unlock(&device.lbllock);
    return result;
}

/*******************************************************************************
**
** Function         release_transaction
**
** Description    Will release a transaction for reuse
**
** Returns          bt_status_t
*******************************************************************************/
void release_transaction(UINT8 lbl)
{
    rc_transaction_t *transaction = get_transaction_by_lbl(lbl);

    /* If the transaction is in use... */
    if (transaction != NULL)
    {
        BTIF_TRACE_DEBUG("%s: lbl: %d", __FUNCTION__, lbl);
        initialize_transaction(lbl);
    }
}

/*******************************************************************************
**
** Function         lbl_destroy
**
** Description    Cleanup of the mutex
**
** Returns          void
*******************************************************************************/
void lbl_destroy()
{
    if (!pthread_mutex_destroy(&(device.lbllock)))
    {
        device.lbllock_destroyed = TRUE;
        BTIF_TRACE_EVENT(" %s: lbllock destroy success ", __FUNCTION__);
    }
}

/*******************************************************************************
**      Function       sleep_ms
**
**      Description    Sleep the calling thread unconditionally for
**                     |timeout_ms| milliseconds.
**
**      Returns        void
*******************************************************************************/
static void sleep_ms(period_ms_t timeout_ms) {
    struct timespec delay;
    delay.tv_sec = timeout_ms / 1000;
    delay.tv_nsec = 1000 * 1000 * (timeout_ms % 1000);

    OSI_NO_INTR(nanosleep(&delay, &delay));
}

static bool absolute_volume_disabled() {
    char volume_disabled[PROPERTY_VALUE_MAX] = {0};
    osi_property_get("persist.bluetooth.disableabsvol", volume_disabled, "false");
    if (strncmp(volume_disabled, "true", 4) == 0) {
        BTIF_TRACE_WARNING("%s: Absolute volume disabled by property", __func__);
        return true;
    }
    return false;
}
