/******************************************************************************
*
* Copyright (C) 2009-2012 Broadcom Corporation
*
* 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
*
*****************************************************************************/
#include <hardware/bluetooth.h>
#include <fcntl.h>
#include <string.h>
#include "bta_api.h"
#include "bta_av_api.h"
#include "avrc_defs.h"
#include "gki.h"
#define LOG_TAG "bt_btif_avrc"
#include "btif_common.h"
#include "btif_util.h"
#include "btif_av.h"
#include "hardware/bt_rc.h"
#include "uinput.h"
/*****************************************************************************
** Constants & Macros
******************************************************************************/
/* cod value for Headsets */
#define COD_AV_HEADSETS 0x0404
/* for AVRC 1.4 need to change this */
#define MAX_RC_NOTIFICATIONS AVRC_EVT_APP_SETTING_CHANGE
#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 MAX_VOLUME 128
#define MAX_LABEL 16
#define MAX_TRANSACTIONS_PER_SESSION 16
#define MAX_CMD_QUEUE_LEN 8
#define PLAY_STATUS_PLAYING 1
#define CHECK_RC_CONNECTED \
BTIF_TRACE_DEBUG("## %s ##", __FUNCTION__); \
if(btif_rc_cb.rc_connected == FALSE) \
{ \
BTIF_TRACE_WARNING("Function %s() called when RC is not connected", __FUNCTION__); \
return BT_STATUS_NOT_READY; \
}
#define FILL_PDU_QUEUE(index, ctype, label, pending) \
{ \
btif_rc_cb.rc_pdu_info[index].ctype = ctype; \
btif_rc_cb.rc_pdu_info[index].label = label; \
btif_rc_cb.rc_pdu_info[index].is_rsp_pending = pending; \
}
#define SEND_METAMSG_RSP(index, avrc_rsp) \
{ \
if(btif_rc_cb.rc_pdu_info[index].is_rsp_pending == FALSE) \
{ \
BTIF_TRACE_WARNING("%s Not sending response as no PDU was registered", __FUNCTION__); \
return BT_STATUS_UNHANDLED; \
} \
send_metamsg_rsp(btif_rc_cb.rc_handle, btif_rc_cb.rc_pdu_info[index].label, \
btif_rc_cb.rc_pdu_info[index].ctype, avrc_rsp); \
btif_rc_cb.rc_pdu_info[index].ctype = 0; \
btif_rc_cb.rc_pdu_info[index].label = 0; \
btif_rc_cb.rc_pdu_info[index].is_rsp_pending = FALSE; \
}
/*****************************************************************************
** Local type definitions
******************************************************************************/
typedef struct {
UINT8 bNotify;
UINT8 label;
} btif_rc_reg_notifications_t;
typedef struct
{
UINT8 label;
UINT8 ctype;
BOOLEAN is_rsp_pending;
} btif_rc_cmd_ctxt_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;
} btif_rc_cb_t;
typedef struct {
BOOLEAN in_use;
UINT8 lbl;
UINT8 handle;
} rc_transaction_t;
typedef struct
{
pthread_mutex_t lbllock;
rc_transaction_t transaction[MAX_TRANSACTIONS_PER_SESSION];
} rc_device_t;
rc_device_t device;
#define MAX_UINPUT_PATHS 3
static const char* uinput_dev_path[] =
{"/dev/uinput", "/dev/input/uinput", "/dev/misc/uinput" };
static int uinput_fd = -1;
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 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);
static void register_volumechange(UINT8 label);
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);
static void handle_rc_metamsg_rsp(tBTA_AV_META_MSG *pmeta_msg);
static void btif_rc_upstreams_evt(UINT16 event, tAVRC_COMMAND* p_param, UINT8 ctype, UINT8 label);
static void btif_rc_upstreams_rsp_evt(UINT16 event, tAVRC_RESPONSE *pavrc_resp, UINT8 ctype, UINT8 label);
/*****************************************************************************
** Static variables
******************************************************************************/
static btif_rc_cb_t btif_rc_cb;
static btrc_callbacks_t *bt_rc_callbacks = NULL;
static btrc_ctrl_callbacks_t *bt_rc_ctrl_callbacks = NULL;
/*****************************************************************************
** Static functions
******************************************************************************/
/*****************************************************************************
** Externs
******************************************************************************/
extern BOOLEAN btif_hf_call_terminated_recently();
extern BOOLEAN check_cod(const bt_bdaddr_t *remote_bdaddr, uint32_t cod);
/*****************************************************************************
** 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;
return write(fd, &event, sizeof(event));
}
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_DEBUG("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)
strncpy(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;
if (write(fd, &dev, sizeof(dev)) < 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;
}
return fd;
}
int init_uinput (void)
{
char *name = "AVRCP";
BTIF_TRACE_DEBUG("%s", __FUNCTION__);
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)
{
BTIF_TRACE_DEBUG("%s", __FUNCTION__);
if (uinput_fd > 0) {
ioctl(uinput_fd, UI_DEV_DESTROY);
close(uinput_fd);
uinput_fd = -1;
}
}
void handle_rc_features()
{
btrc_remote_features_t rc_features = BTRC_FEAT_NONE;
bt_bdaddr_t rc_addr;
bdcpy(rc_addr.address, btif_rc_cb.rc_addr);
// TODO(eisenbach): If devices need to be blacklisted for absolute
// volume, it should be added to device/include/interop_database.h
// For now, everything goes... If blacklisting is necessary, exclude
// the following bit here:
// btif_rc_cb.rc_features &= ~BTA_AV_FEAT_ADV_CTRL;
if (btif_rc_cb.rc_features & BTA_AV_FEAT_BROWSE)
{
rc_features |= BTRC_FEAT_BROWSE;
}
if ( (btif_rc_cb.rc_features & BTA_AV_FEAT_ADV_CTRL) &&
(btif_rc_cb.rc_features & BTA_AV_FEAT_RCTG))
{
rc_features |= BTRC_FEAT_ABSOLUTE_VOLUME;
}
if (btif_rc_cb.rc_features & BTA_AV_FEAT_METADATA)
{
rc_features |= BTRC_FEAT_METADATA;
}
BTIF_TRACE_DEBUG("%s: rc_features=0x%x", __FUNCTION__, rc_features);
HAL_CBACK(bt_rc_callbacks, remote_features_cb, &rc_addr, rc_features)
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
BTIF_TRACE_DEBUG("Checking for feature flags in btif_rc_handler with label %d",
btif_rc_cb.rc_vol_label);
// Register for volume change on connect
if(btif_rc_cb.rc_features & BTA_AV_FEAT_ADV_CTRL &&
btif_rc_cb.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.rc_vol_label)
{
status=get_transaction(&p_transaction);
}
else
{
p_transaction=get_transaction_by_lbl(btif_rc_cb.rc_vol_label);
if(NULL!=p_transaction)
{
BTIF_TRACE_DEBUG("register_volumechange already in progress for label %d",
btif_rc_cb.rc_vol_label);
return;
}
else
status=get_transaction(&p_transaction);
}
if(BT_STATUS_SUCCESS == status && NULL!=p_transaction)
{
btif_rc_cb.rc_vol_label=p_transaction->lbl;
register_volumechange(btif_rc_cb.rc_vol_label);
}
}
#endif
}
/***************************************************************************
* 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_DEBUG("%s: rc_handle: %d", __FUNCTION__, p_rc_open->rc_handle);
bt_status_t result = BT_STATUS_SUCCESS;
#if (AVRC_CTLR_INCLUDED == TRUE)
bt_bdaddr_t rc_addr;
#endif
if(p_rc_open->status == BTA_AV_SUCCESS)
{
//check if already some RC is connected
if (btif_rc_cb.rc_connected)
{
BTIF_TRACE_ERROR("Got RC OPEN in connected state, Connected RC: %d \
and Current RC: %d", btif_rc_cb.rc_handle,p_rc_open->rc_handle );
if ((btif_rc_cb.rc_handle != p_rc_open->rc_handle)
&& (bdcmp(btif_rc_cb.rc_addr, p_rc_open->peer_addr)))
{
BTIF_TRACE_DEBUG("Got RC connected for some other handle");
BTA_AvCloseRc(p_rc_open->rc_handle);
return;
}
}
memcpy(btif_rc_cb.rc_addr, p_rc_open->peer_addr, sizeof(BD_ADDR));
btif_rc_cb.rc_features = p_rc_open->peer_features;
btif_rc_cb.rc_vol_label=MAX_LABEL;
btif_rc_cb.rc_volume=MAX_VOLUME;
btif_rc_cb.rc_connected = TRUE;
btif_rc_cb.rc_handle = p_rc_open->rc_handle;
/* on locally initiated connection we will get remote features as part of connect */
if (btif_rc_cb.rc_features != 0)
handle_rc_features();
result = uinput_driver_check();
if(result == BT_STATUS_SUCCESS)
{
init_uinput();
}
#if (AVRC_CTLR_INCLUDED == TRUE)
bdcpy(rc_addr.address, btif_rc_cb.rc_addr);
/* report connection state if device is AVRCP target */
if (btif_rc_cb.rc_features & BTA_AV_FEAT_RCTG) {
if (bt_rc_ctrl_callbacks != NULL) {
HAL_CBACK(bt_rc_ctrl_callbacks, connection_state_cb, TRUE, &rc_addr);
}
}
#endif
}
else
{
BTIF_TRACE_ERROR("%s Connect failed with error code: %d",
__FUNCTION__, p_rc_open->status);
btif_rc_cb.rc_connected = FALSE;
}
}
/***************************************************************************
* 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)
{
#if (AVRC_CTLR_INCLUDED == TRUE)
bt_bdaddr_t rc_addr;
tBTA_AV_FEAT features;
#endif
BTIF_TRACE_DEBUG("%s: rc_handle: %d", __FUNCTION__, p_rc_close->rc_handle);
if ((p_rc_close->rc_handle != btif_rc_cb.rc_handle)
&& (bdcmp(btif_rc_cb.rc_addr, p_rc_close->peer_addr)))
{
BTIF_TRACE_ERROR("Got disconnect of unknown device");
return;
}
btif_rc_cb.rc_handle = 0;
btif_rc_cb.rc_connected = FALSE;
memset(btif_rc_cb.rc_addr, 0, sizeof(BD_ADDR));
memset(btif_rc_cb.rc_notif, 0, sizeof(btif_rc_cb.rc_notif));
#if (AVRC_CTLR_INCLUDED == TRUE)
features = btif_rc_cb.rc_features;
#endif
btif_rc_cb.rc_features = 0;
btif_rc_cb.rc_vol_label=MAX_LABEL;
btif_rc_cb.rc_volume=MAX_VOLUME;
init_all_transactions();
close_uinput();
#if (AVRC_CTLR_INCLUDED == TRUE)
bdcpy(rc_addr.address, btif_rc_cb.rc_addr);
#endif
memset(btif_rc_cb.rc_addr, 0, sizeof(BD_ADDR));
#if (AVRC_CTLR_INCLUDED == TRUE)
/* report connection state if device is AVRCP target */
if (features & BTA_AV_FEAT_RCTG) {
if (bt_rc_ctrl_callbacks != NULL) {
HAL_CBACK(bt_rc_ctrl_callbacks, connection_state_cb, FALSE, &rc_addr);
}
}
#endif
}
/***************************************************************************
* 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
*
***************************************************************************/
void handle_rc_passthrough_cmd ( tBTA_AV_REMOTE_CMD *p_remote_cmd)
{
const char *status;
int pressed, i;
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.rc_pending_play = TRUE;
}
return;
}
if ((p_remote_cmd->rc_id == BTA_AV_RC_PAUSE) && (btif_rc_cb.rc_pending_play))
{
APPL_TRACE_WARNING("%s: Clear the pending PLAY on PAUSE received", __FUNCTION__);
btif_rc_cb.rc_pending_play = FALSE;
return;
}
}
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 (p_remote_cmd->key_state == AVRC_STATE_RELEASE) {
status = "released";
pressed = 0;
} else {
status = "pressed";
pressed = 1;
}
/* If this is Play/Pause command (press or release) before processing, check the following
* a voice call has ended recently
* the remote device is not of type headset
* If the above conditions meet, drop the Play/Pause command
* This fix is to interop with certain carkits which sends an automatic PLAY or PAUSE
* commands right after call ends
*/
if((p_remote_cmd->rc_id == BTA_AV_RC_PLAY || p_remote_cmd->rc_id == BTA_AV_RC_PAUSE)&&
(btif_hf_call_terminated_recently() == TRUE) &&
(check_cod( (const bt_bdaddr_t*)&(btif_rc_cb.rc_addr), COD_AV_HEADSETS) != TRUE))
{
BTIF_TRACE_DEBUG("%s:Dropping the play/Pause command received right after call end cmd:%d",
__FUNCTION__,p_remote_cmd->rc_id);
return;
}
if (p_remote_cmd->rc_id == BTA_AV_RC_FAST_FOR || p_remote_cmd->rc_id == BTA_AV_RC_REWIND) {
HAL_CBACK(bt_rc_callbacks, passthrough_cmd_cb, p_remote_cmd->rc_id, pressed);
return;
}
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))
{
GKI_delay(30); // 30ms
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 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;
if (btif_rc_cb.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
}
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;
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("Received vendor command.code,PDU and label: %d, %d,%d",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.rc_notif[event_id-1].bNotify = TRUE;
btif_rc_cb.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);
}
}
/***************************************************************************
**
** Function btif_rc_handler
**
** Description RC event handler
**
***************************************************************************/
void btif_rc_handler(tBTA_AV_EVT event, tBTA_AV *p_data)
{
BTIF_TRACE_DEBUG ("%s event:%s", __FUNCTION__, dump_rc_event(event));
switch (event)
{
case BTA_AV_RC_OPEN_EVT:
{
BTIF_TRACE_DEBUG("Peer_features:%x", 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);
handle_rc_passthrough_cmd( (&p_data->remote_cmd) );
}
break;
#if (AVRC_CTLR_INCLUDED == TRUE)
case BTA_AV_REMOTE_RSP_EVT:
{
BTIF_TRACE_DEBUG("RSP: rc_id:0x%x key_state:%d", p_data->remote_rsp.rc_id,
p_data->remote_rsp.key_state);
handle_rc_passthrough_rsp( (&p_data->remote_rsp) );
}
break;
#endif
case BTA_AV_RC_FEAT_EVT:
{
BTIF_TRACE_DEBUG("Peer_features:%x", p_data->rc_feat.peer_features);
btif_rc_cb.rc_features = p_data->rc_feat.peer_features;
handle_rc_features();
}
break;
case BTA_AV_META_MSG_EVT:
{
BTIF_TRACE_DEBUG("BTA_AV_META_MSG_EVT code:%d label:%d", p_data->meta_msg.code,
p_data->meta_msg.label);
BTIF_TRACE_DEBUG(" company_id:0x%x len:%d handle:%d", 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));
}
break;
default:
BTIF_TRACE_DEBUG("Unhandled RC event : 0x%x", 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)
{
if (btif_rc_cb.rc_connected == TRUE) {
bdcpy(peer_addr, btif_rc_cb.rc_addr);
return TRUE;
}
return FALSE;
}
/***************************************************************************
**
** 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)
{
UNUSED(peer_addr);
BTIF_TRACE_DEBUG("%s: bSendToApp=%d", __FUNCTION__, bSendToApp);
if (btif_rc_cb.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.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
*/
GKI_delay (200);
/* send to app - both PRESSED & RELEASED */
remote_cmd.key_state = AVRC_STATE_PRESS;
handle_rc_passthrough_cmd( &remote_cmd );
GKI_delay (100);
remote_cmd.key_state = AVRC_STATE_RELEASE;
handle_rc_passthrough_cmd( &remote_cmd );
}
btif_rc_cb.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;
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.rc_connected) && (btif_rc_cb.rc_notif[event_id-1].bNotify);
/* de-register this notification for a CHANGED response */
btif_rc_cb.rc_notif[event_id-1].bNotify = FALSE;
BTIF_TRACE_DEBUG("%s rc_handle: %d. event_id: 0x%02d bNotify:%u", __FUNCTION__,
btif_rc_cb.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.rc_handle,
pmetamsg_resp, &p_msg)) )
{
BTIF_TRACE_DEBUG("%s Sending notification to rc_handle: %d. event_id: 0x%02d",
__FUNCTION__, btif_rc_cb.rc_handle, event_id);
bSent = TRUE;
BTA_AvMetaRsp(btif_rc_cb.rc_handle, btif_rc_cb.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 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)
{
BTIF_TRACE_EVENT("%s pdu: %s handle: 0x%x ctype:%x label:%x", __FUNCTION__,
dump_rc_pdu(pavrc_cmd->pdu), btif_rc_cb.rc_handle, ctype, label);
switch (event)
{
case AVRC_PDU_GET_PLAY_STATUS:
{
FILL_PDU_QUEUE(IDX_GET_PLAY_STATUS_RSP, ctype, label, TRUE)
HAL_CBACK(bt_rc_callbacks, get_play_status_cb);
}
break;
case AVRC_PDU_LIST_PLAYER_APP_ATTR:
case AVRC_PDU_LIST_PLAYER_APP_VALUES:
case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
case AVRC_PDU_SET_PLAYER_APP_VALUE:
case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
{
/* TODO: Add support for Application Settings */
send_reject_response (btif_rc_cb.rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_CMD);
}
break;
case AVRC_PDU_GET_ELEMENT_ATTR:
{
btrc_media_attr_t element_attrs[BTRC_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 = BTRC_MAX_ELEM_ATTR_SIZE;
for (attr_cnt = 0; attr_cnt < BTRC_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.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);
HAL_CBACK(bt_rc_callbacks, get_element_attr_cb, num_attr, element_attrs);
}
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.rc_handle, label, pavrc_cmd->pdu, AVRC_STS_BAD_PARAM);
/* de-register this notification for a rejected response */
btif_rc_cb.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);
}
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.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.rc_handle, label, ctype, &avrc_rsp);
}
}
break;
default:
{
send_reject_response (btif_rc_cb.rc_handle, label, pavrc_cmd->pdu,
(pavrc_cmd->pdu == AVRC_PDU_SEARCH)?AVRC_STS_SEARCH_NOT_SUP:AVRC_STS_BAD_CMD);
return;
}
break;
}
}
/*******************************************************************************
**
** 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)
{
BTIF_TRACE_EVENT("%s pdu: %s handle: 0x%x ctype:%x label:%x", __FUNCTION__,
dump_rc_pdu(pavrc_resp->pdu), btif_rc_cb.rc_handle, ctype, label);
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
switch (event)
{
case AVRC_PDU_REGISTER_NOTIFICATION:
{
if(AVRC_RSP_CHANGED==ctype)
btif_rc_cb.rc_volume=pavrc_resp->reg_notif.param.volume;
HAL_CBACK(bt_rc_callbacks, volume_change_cb, pavrc_resp->reg_notif.param.volume,ctype)
}
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.rc_volume=pavrc_resp->volume.volume;
HAL_CBACK(bt_rc_callbacks,volume_change_cb,pavrc_resp->volume.volume,ctype)
}
break;
default:
return;
}
#endif
}
/************************************************************************************
** AVRCP API Functions
************************************************************************************/
/*******************************************************************************
**
** Function init
**
** Description Initializes the AVRC interface
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t init(btrc_callbacks_t* callbacks )
{
BTIF_TRACE_EVENT("## %s ##", __FUNCTION__);
bt_status_t result = BT_STATUS_SUCCESS;
if (bt_rc_callbacks)
return BT_STATUS_DONE;
bt_rc_callbacks = callbacks;
memset (&btif_rc_cb, 0, sizeof(btif_rc_cb));
btif_rc_cb.rc_vol_label=MAX_LABEL;
btif_rc_cb.rc_volume=MAX_VOLUME;
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;
bt_rc_ctrl_callbacks = callbacks;
memset (&btif_rc_cb, 0, sizeof(btif_rc_cb));
btif_rc_cb.rc_vol_label=MAX_LABEL;
btif_rc_cb.rc_volume=MAX_VOLUME;
lbl_init();
return result;
}
/***************************************************************************
**
** 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)
{
tAVRC_RESPONSE avrc_rsp;
CHECK_RC_CONNECTED
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);
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)
{
tAVRC_RESPONSE avrc_rsp;
UINT32 i;
tAVRC_ATTR_ENTRY element_attrs[BTRC_MAX_ELEM_ATTR_SIZE];
CHECK_RC_CONNECTED
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++) {
element_attrs[i].attr_id = p_attrs[i].attr_id;
element_attrs[i].name.charset_id = AVRC_CHARSET_ID_UTF8;
element_attrs[i].name.str_len = (UINT16)strlen((char *)p_attrs[i].text);
element_attrs[i].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[i].attr_id,
element_attrs[i].name.charset_id, element_attrs[i].name.str_len,
element_attrs[i].name.p_str);
}
avrc_rsp.get_play_status.status = AVRC_STS_NO_ERROR;
}
avrc_rsp.get_elem_attrs.num_attr = num_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);
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)
{
tAVRC_RESPONSE avrc_rsp;
CHECK_RC_CONNECTED
BTIF_TRACE_EVENT("## %s ## event_id:%s", __FUNCTION__, dump_rc_notification_event_id(event_id));
if (btif_rc_cb.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;
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;
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);
avrc_rsp.get_play_status.status = AVRC_STS_NO_ERROR;
/* Send the response. */
send_metamsg_rsp(btif_rc_cb.rc_handle, btif_rc_cb.rc_notif[event_id-1].label,
((type == BTRC_NOTIFICATION_TYPE_INTERIM)?AVRC_CMD_NOTIF:AVRC_RSP_CHANGED), &avrc_rsp);
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)
{
BTIF_TRACE_DEBUG("%s", __FUNCTION__);
CHECK_RC_CONNECTED
tAVRC_STS status = BT_STATUS_UNSUPPORTED;
rc_transaction_t *p_transaction=NULL;
if(btif_rc_cb.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.rc_features & BTA_AV_FEAT_RCTG) &&
(btif_rc_cb.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.rc_handle,p_transaction->lbl, AVRC_CMD_CTRL, p_msg);
status = BT_STATUS_SUCCESS;
}
else
{
if(NULL!=p_msg)
GKI_freebuf(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;
}
/***************************************************************************
**
** Function register_volumechange
**
** Description Register for volume change notification from remote side.
**
** Returns void
**
***************************************************************************/
static void register_volumechange (UINT8 lbl)
{
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;
BldResp=AVRC_BldCommand(&avrc_cmd, &p_msg);
if(AVRC_STS_NO_ERROR==BldResp && p_msg)
{
p_transaction=get_transaction_by_lbl(lbl);
if(NULL!=p_transaction)
{
BTA_AvMetaCmd(btif_rc_cb.rc_handle,p_transaction->lbl, AVRC_CMD_NOTIF, p_msg);
BTIF_TRACE_DEBUG("%s:BTA_AvMetaCmd called",__FUNCTION__);
}
else
{
if(NULL!=p_msg)
GKI_freebuf(p_msg);
BTIF_TRACE_ERROR("%s transaction not obtained with label: %d",__FUNCTION__,lbl);
}
}
else
BTIF_TRACE_ERROR("%s failed to build command:%d",__FUNCTION__,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)
{
tAVRC_RESPONSE avrc_response = {0};
UINT8 scratch_buf[512] = {0};
tAVRC_STS status = BT_STATUS_UNSUPPORTED;
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.rc_vol_label==pmeta_msg->label)
{
btif_rc_cb.rc_vol_label=MAX_LABEL;
release_transaction(btif_rc_cb.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.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.rc_vol_label);
}
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);
}
/***************************************************************************
**
** Function cleanup
**
** Description Closes the AVRC interface
**
** Returns void
**
***************************************************************************/
static void cleanup()
{
BTIF_TRACE_EVENT("## %s ##", __FUNCTION__);
close_uinput();
if (bt_rc_callbacks)
{
bt_rc_callbacks = NULL;
}
memset(&btif_rc_cb, 0, sizeof(btif_rc_cb_t));
lbl_destroy();
BTIF_TRACE_EVENT("## %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;
}
memset(&btif_rc_cb, 0, sizeof(btif_rc_cb_t));
lbl_destroy();
BTIF_TRACE_EVENT("## %s ## completed", __FUNCTION__);
}
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;
#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.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.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,
NULL, /* list_player_app_attr_rsp */
NULL, /* list_player_app_value_rsp */
NULL, /* get_player_app_value_rsp */
NULL, /* get_player_app_attr_text_rsp */
NULL, /* get_player_app_value_text_rsp */
get_element_attr_rsp,
NULL, /* set_player_app_value_rsp */
register_notification_rsp,
set_volume,
cleanup,
};
static const btrc_ctrl_interface_t bt_rc_ctrl_interface = {
sizeof(bt_rc_ctrl_interface),
init_ctrl,
send_passthrough_cmd,
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)
{
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_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()
{
pthread_mutex_destroy(&(device.lbllock));
}