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Diffstat (limited to 'bta/ag/bta_ag_sco.c')
| -rw-r--r-- | bta/ag/bta_ag_sco.c | 1662 |
1 files changed, 1662 insertions, 0 deletions
diff --git a/bta/ag/bta_ag_sco.c b/bta/ag/bta_ag_sco.c new file mode 100644 index 0000000..0c811b4 --- /dev/null +++ b/bta/ag/bta_ag_sco.c @@ -0,0 +1,1662 @@ +/****************************************************************************** + * + * Copyright (C) 2004-2012 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. + * + ******************************************************************************/ + +/****************************************************************************** + * + * This file contains functions for managing the SCO connection used in AG. + * + ******************************************************************************/ + +#include "bta_api.h" +#include "bta_ag_api.h" +#include "bta_ag_co.h" +#if (BTM_SCO_HCI_INCLUDED == TRUE ) +#include "bta_dm_co.h" +#endif +#include "bta_ag_int.h" +#include "btm_api.h" +#include "gki.h" + +#ifndef BTA_AG_SCO_DEBUG +#define BTA_AG_SCO_DEBUG FALSE +#endif + +#ifndef BTA_AG_CODEC_NEGO_TIMEOUT +#define BTA_AG_CODEC_NEGO_TIMEOUT 3000 +#endif + +#if BTA_AG_SCO_DEBUG == TRUE +static char *bta_ag_sco_evt_str(UINT8 event); +static char *bta_ag_sco_state_str(UINT8 state); +#endif + +#define BTA_AG_NO_EDR_ESCO (BTM_SCO_PKT_TYPES_MASK_NO_2_EV3 | \ + BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 | \ + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | \ + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5) + +/* sco events */ +enum +{ + BTA_AG_SCO_LISTEN_E, /* listen request */ + BTA_AG_SCO_OPEN_E, /* open request */ + BTA_AG_SCO_XFER_E, /* transfer request */ +#if (BTM_WBS_INCLUDED == TRUE ) + BTA_AG_SCO_CN_DONE_E, /* codec negotiation done */ + BTA_AG_SCO_REOPEN_E, /* Retry with other codec when failed */ +#endif + BTA_AG_SCO_CLOSE_E, /* close request */ + BTA_AG_SCO_SHUTDOWN_E, /* shutdown request */ + BTA_AG_SCO_CONN_OPEN_E, /* sco open */ + BTA_AG_SCO_CONN_CLOSE_E, /* sco closed */ + BTA_AG_SCO_CI_DATA_E /* SCO data ready */ +}; + +#if (BTM_WBS_INCLUDED == TRUE ) +#define BTA_AG_NUM_CODECS 2 +static const tBTM_ESCO_PARAMS bta_ag_esco_params[BTA_AG_NUM_CODECS] = +{ + /* CVSD */ + { + BTM_64KBITS_RATE, /* TX Bandwidth (64 kbits/sec) */ + BTM_64KBITS_RATE, /* RX Bandwidth (64 kbits/sec) */ + 0x000a, /* 10 ms (HS/HF can use EV3, 2-EV3, 3-EV3) */ + BTM_VOICE_SETTING_CVSD, /* Inp Linear, Air CVSD, 2s Comp, 16bit */ + (BTM_SCO_PKT_TYPES_MASK_HV1 + /* Packet Types */ + BTM_SCO_PKT_TYPES_MASK_HV2 + + BTM_SCO_PKT_TYPES_MASK_HV3 + + BTM_SCO_PKT_TYPES_MASK_EV3 + + BTM_SCO_PKT_TYPES_MASK_EV4 + + BTM_SCO_PKT_TYPES_MASK_EV5 + + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 + + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5), + BTM_ESCO_RETRANS_POWER /* Retransmission effort */ + }, + /* mSBC */ + { + BTM_64KBITS_RATE, /* TX Bandwidth (64 kbits/sec), 8000 */ + BTM_64KBITS_RATE, /* RX Bandwidth (64 kbits/sec), 8000 */ + 13, /* 13 ms */ + BTM_VOICE_SETTING_TRANS, /* Inp Linear, Transparent, 2s Comp, 16bit */ + (BTM_SCO_PKT_TYPES_MASK_EV3 | /* Packet Types : EV3 + 2-EV3 */ + BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 | + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5), + BTM_ESCO_RETRANS_QUALITY /* Retransmission effort */ + } +}; +#else +static const tBTM_ESCO_PARAMS bta_ag_esco_params = +{ + BTM_64KBITS_RATE, /* TX Bandwidth (64 kbits/sec) */ + BTM_64KBITS_RATE, /* RX Bandwidth (64 kbits/sec) */ + 0x000a, /* 10 ms (HS/HF can use EV3, 2-EV3, 3-EV3) */ + 0x0060, /* Inp Linear, Air CVSD, 2s Comp, 16bit */ + (BTM_SCO_PKT_TYPES_MASK_HV1 + /* Packet Types */ + BTM_SCO_PKT_TYPES_MASK_HV2 + + BTM_SCO_PKT_TYPES_MASK_HV3 + + BTM_SCO_PKT_TYPES_MASK_EV3 + + BTM_SCO_PKT_TYPES_MASK_EV4 + + BTM_SCO_PKT_TYPES_MASK_EV5 + + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 + + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5), + BTM_ESCO_RETRANS_POWER /* Retransmission effort */ +}; +#endif + +/******************************************************************************* +** +** Function bta_ag_sco_conn_cback +** +** Description BTM SCO connection callback. +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_sco_conn_cback(UINT16 sco_idx) +{ + UINT16 handle; + BT_HDR *p_buf; + tBTA_AG_SCB *p_scb; + + /* match callback to scb; first check current sco scb */ + if (bta_ag_cb.sco.p_curr_scb != NULL && bta_ag_cb.sco.p_curr_scb->in_use) + { + handle = bta_ag_scb_to_idx(bta_ag_cb.sco.p_curr_scb); + } + /* then check for scb connected to this peer */ + else + { + /* Check if SLC is up */ + handle = bta_ag_idx_by_bdaddr(BTM_ReadScoBdAddr(sco_idx)); + p_scb = bta_ag_scb_by_idx(handle); + if(p_scb && !p_scb->svc_conn) + handle = 0; + } + + if (handle != 0) + { + if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) + { + p_buf->event = BTA_AG_SCO_OPEN_EVT; + p_buf->layer_specific = handle; + bta_sys_sendmsg(p_buf); + } + } + /* no match found; disconnect sco, init sco variables */ + else + { + bta_ag_cb.sco.p_curr_scb = NULL; + bta_ag_cb.sco.state = BTA_AG_SCO_SHUTDOWN_ST; + BTM_RemoveSco(sco_idx); + } +} + +/******************************************************************************* +** +** Function bta_ag_sco_disc_cback +** +** Description BTM SCO disconnection callback. +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_sco_disc_cback(UINT16 sco_idx) +{ + BT_HDR *p_buf; + UINT16 handle = 0; + + APPL_TRACE_DEBUG3 ("bta_ag_sco_disc_cback(): sco_idx: 0x%x p_cur_scb: 0x%08x sco.state: %d", sco_idx, bta_ag_cb.sco.p_curr_scb, bta_ag_cb.sco.state); + + APPL_TRACE_DEBUG4 ("bta_ag_sco_disc_cback(): scb[0] addr: 0x%08x in_use: %u sco_idx: 0x%x sco state: %u", + &bta_ag_cb.scb[0], bta_ag_cb.scb[0].in_use, bta_ag_cb.scb[0].sco_idx, bta_ag_cb.scb[0].state); + APPL_TRACE_DEBUG4 ("bta_ag_sco_disc_cback(): scb[1] addr: 0x%08x in_use: %u sco_idx: 0x%x sco state: %u", + &bta_ag_cb.scb[1], bta_ag_cb.scb[1].in_use, bta_ag_cb.scb[1].sco_idx, bta_ag_cb.scb[1].state); + + /* match callback to scb */ + if (bta_ag_cb.sco.p_curr_scb != NULL && bta_ag_cb.sco.p_curr_scb->in_use) + { + /* We only care about callbacks for the active SCO */ + if (bta_ag_cb.sco.p_curr_scb->sco_idx != sco_idx) + { + if (bta_ag_cb.sco.p_curr_scb->sco_idx != 0xFFFF) + return; + } + handle = bta_ag_scb_to_idx(bta_ag_cb.sco.p_curr_scb); + } + + if (handle != 0) + { +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + tBTM_STATUS status = BTM_ConfigScoPath(BTM_SCO_ROUTE_PCM, NULL, NULL, TRUE); + APPL_TRACE_DEBUG1("bta_ag_sco_disc_cback sco close config status = %d", status); + /* SCO clean up here */ + bta_dm_sco_co_close(); +#endif + +#if (BTM_WBS_INCLUDED == TRUE ) + /* Restore settings */ + if(bta_ag_cb.sco.p_curr_scb->inuse_codec == BTA_AG_CODEC_MSBC) + { + BTM_SetWBSCodec (BTM_SCO_CODEC_NONE); + BTM_WriteVoiceSettings (BTM_VOICE_SETTING_CVSD); + + /* If SCO open was initiated by AG and failed for mSBC, try CVSD again. */ + if (bta_ag_sco_is_opening (bta_ag_cb.sco.p_curr_scb)) + { + bta_ag_cb.sco.p_curr_scb->codec_fallback = TRUE; + APPL_TRACE_DEBUG0("Fallback to CVSD"); + } + } + + bta_ag_cb.sco.p_curr_scb->inuse_codec = BTA_AG_CODEC_NONE; +#endif + + if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) + { + p_buf->event = BTA_AG_SCO_CLOSE_EVT; + p_buf->layer_specific = handle; + bta_sys_sendmsg(p_buf); + } + } + /* no match found */ + else + { + APPL_TRACE_DEBUG0("no scb for ag_sco_disc_cback"); + + /* sco could be closed after scb dealloc'ed */ + if (bta_ag_cb.sco.p_curr_scb != NULL) + { + bta_ag_cb.sco.p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX; + bta_ag_cb.sco.p_curr_scb = NULL; + bta_ag_cb.sco.state = BTA_AG_SCO_SHUTDOWN_ST; + } + } +} +#if (BTM_SCO_HCI_INCLUDED == TRUE ) +/******************************************************************************* +** +** Function bta_ag_sco_read_cback +** +** Description Callback function is the callback function for incoming +** SCO data over HCI. +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_sco_read_cback (UINT16 sco_inx, BT_HDR *p_data, tBTM_SCO_DATA_FLAG status) +{ + if (status != BTM_SCO_DATA_CORRECT) + { + APPL_TRACE_DEBUG1("bta_ag_sco_read_cback: status(%d)", status); + } + + /* Callout function must free the data. */ + bta_dm_sco_co_in_data (p_data, status); +} +#endif +/******************************************************************************* +** +** Function bta_ag_remove_sco +** +** Description Removes the specified SCO from the system. +** If only_active is TRUE, then SCO is only removed if connected +** +** Returns BOOLEAN - TRUE if Sco removal was started +** +*******************************************************************************/ +static BOOLEAN bta_ag_remove_sco(tBTA_AG_SCB *p_scb, BOOLEAN only_active) +{ + BOOLEAN removed_started = FALSE; + tBTM_STATUS status; + + if (p_scb->sco_idx != BTM_INVALID_SCO_INDEX) + { + if (!only_active || p_scb->sco_idx == bta_ag_cb.sco.cur_idx) + { + status = BTM_RemoveSco(p_scb->sco_idx); + + APPL_TRACE_DEBUG2("ag remove sco: inx 0x%04x, status:0x%x", p_scb->sco_idx, status); + + if (status == BTM_CMD_STARTED) + { + /* Sco is connected; set current control block */ + bta_ag_cb.sco.p_curr_scb = p_scb; + + removed_started = TRUE; + } + /* If no connection reset the sco handle */ + else if ( (status == BTM_SUCCESS) || (status == BTM_UNKNOWN_ADDR) ) + { + p_scb->sco_idx = BTM_INVALID_SCO_INDEX; + } + } + } + return removed_started; +} + + +/******************************************************************************* +** +** Function bta_ag_esco_connreq_cback +** +** Description BTM eSCO connection requests and eSCO change requests +** Only the connection requests are processed by BTA. +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_esco_connreq_cback(tBTM_ESCO_EVT event, tBTM_ESCO_EVT_DATA *p_data) +{ + tBTA_AG_SCB *p_scb; + UINT16 handle; + UINT16 sco_inx = p_data->conn_evt.sco_inx; + + /* Only process connection requests */ + if (event == BTM_ESCO_CONN_REQ_EVT) + { + if ((handle = bta_ag_idx_by_bdaddr(BTM_ReadScoBdAddr(sco_inx))) != 0 && + ((p_scb = bta_ag_scb_by_idx(handle)) != NULL) && p_scb->svc_conn) + { + p_scb->sco_idx = sco_inx; + + /* If no other SCO active, allow this one */ + if (!bta_ag_cb.sco.p_curr_scb) + { + APPL_TRACE_EVENT1("bta_ag_esco_connreq_cback: Accept Conn Request (sco_inx 0x%04x)", sco_inx); + bta_ag_sco_conn_rsp(p_scb, &p_data->conn_evt); + + bta_ag_cb.sco.state = BTA_AG_SCO_OPENING_ST; + bta_ag_cb.sco.p_curr_scb = p_scb; + bta_ag_cb.sco.cur_idx = p_scb->sco_idx; + } + else /* Begin a transfer: Close current SCO before responding */ + { + APPL_TRACE_DEBUG0("bta_ag_esco_connreq_cback: Begin XFER"); + bta_ag_cb.sco.p_xfer_scb = p_scb; + bta_ag_cb.sco.conn_data = p_data->conn_evt; + bta_ag_cb.sco.state = BTA_AG_SCO_OPEN_XFER_ST; + + if (!bta_ag_remove_sco(bta_ag_cb.sco.p_curr_scb, TRUE)) + { + APPL_TRACE_ERROR1("bta_ag_esco_connreq_cback: Nothing to remove so accept Conn Request (sco_inx 0x%04x)", sco_inx); + bta_ag_cb.sco.p_xfer_scb = NULL; + bta_ag_cb.sco.state = BTA_AG_SCO_LISTEN_ST; + + bta_ag_sco_conn_rsp(p_scb, &p_data->conn_evt); + } + } + } + /* If error occurred send reject response immediately */ + else + { + APPL_TRACE_WARNING0("no scb for bta_ag_esco_connreq_cback or no resources"); + BTM_EScoConnRsp(p_data->conn_evt.sco_inx, HCI_ERR_HOST_REJECT_RESOURCES, NULL); + } + } + /* Received a change in the esco link */ + else if (event == BTM_ESCO_CHG_EVT) + { + APPL_TRACE_EVENT5("eSCO change event (inx %d): rtrans %d, rxlen %d, txlen %d, txint %d", + p_data->chg_evt.sco_inx, + p_data->chg_evt.retrans_window, p_data->chg_evt.rx_pkt_len, + p_data->chg_evt.tx_pkt_len, p_data->chg_evt.tx_interval); + } +} + +/******************************************************************************* +** +** Function bta_ag_cback_sco +** +** Description Call application callback function with SCO event. +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_cback_sco(tBTA_AG_SCB *p_scb, UINT8 event) +{ + tBTA_AG_HDR sco; + + sco.handle = bta_ag_scb_to_idx(p_scb); + sco.app_id = p_scb->app_id; + + /* call close cback */ + (*bta_ag_cb.p_cback)(event, (tBTA_AG *) &sco); +} + +/******************************************************************************* +** +** Function bta_ag_create_sco +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_create_sco(tBTA_AG_SCB *p_scb, BOOLEAN is_orig) +{ + tBTM_STATUS status; + UINT8 *p_bd_addr = NULL; + tBTM_ESCO_PARAMS params; +#if (BTM_WBS_INCLUDED == TRUE ) + tBTA_AG_PEER_CODEC esco_codec = BTM_SCO_CODEC_CVSD; + int codec_index = 0; +#endif +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + tBTM_SCO_ROUTE_TYPE sco_route; + tBTA_CODEC_INFO codec_info = {BTA_SCO_CODEC_PCM}; + UINT32 pcm_sample_rate; +#endif + + /* Make sure this sco handle is not already in use */ + if (p_scb->sco_idx != BTM_INVALID_SCO_INDEX) + { + APPL_TRACE_WARNING1("bta_ag_create_sco: Index 0x%04x Already In Use!", + p_scb->sco_idx); + return; + } + +#if (BTM_WBS_INCLUDED == TRUE ) + if ((p_scb->sco_codec == BTM_SCO_CODEC_MSBC) && + !p_scb->codec_fallback && + !p_scb->retry_with_sco_only) + esco_codec = BTM_SCO_CODEC_MSBC; + + if (p_scb->codec_fallback) + { + p_scb->codec_fallback = FALSE; + + /* Force AG to send +BCS for the next audio connection. */ + p_scb->codec_updated = TRUE; + } + + if (esco_codec == BTM_SCO_CODEC_MSBC) + codec_index = esco_codec - 1; + + params = bta_ag_esco_params[codec_index]; +#else + params = bta_ag_esco_params; +#endif + + if(bta_ag_cb.sco.param_updated) /* If we do not use the default parameters */ + params = bta_ag_cb.sco.params; + + if(!bta_ag_cb.sco.param_updated) + { +#if (BTM_WBS_INCLUDED == TRUE) + if (!codec_index) /* For non-WBS */ +#endif + { + /* Use the application packet types (5 slot EV packets not allowed) */ + params.packet_types = p_bta_ag_cfg->sco_pkt_types | + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5; + } + } + + /* if initiating set current scb and peer bd addr */ + if (is_orig) + { + /* Attempt to use eSCO if remote host supports HFP >= 1.5 */ + /* Need to find out from SIG if HSP can use eSCO; for now use SCO */ + if (p_scb->conn_service == BTA_AG_HFP && p_scb->peer_version >= HFP_VERSION_1_5 && !p_scb->retry_with_sco_only) + { + + BTM_SetEScoMode(BTM_LINK_TYPE_ESCO, ¶ms); + /* If ESCO or EDR ESCO, retry with SCO only in case of failure */ + if((params.packet_types & BTM_ESCO_LINK_ONLY_MASK) + ||!((params.packet_types & ~(BTM_ESCO_LINK_ONLY_MASK | BTM_SCO_LINK_ONLY_MASK)) ^ BTA_AG_NO_EDR_ESCO)) + { +#if (BTM_WBS_INCLUDED == TRUE ) + if (esco_codec != BTA_AG_CODEC_MSBC) + { + p_scb->retry_with_sco_only = TRUE; + APPL_TRACE_API0("Setting retry_with_sco_only to TRUE"); + } + else /* Do not use SCO when using mSBC */ + { + p_scb->retry_with_sco_only = FALSE; + APPL_TRACE_API0("Setting retry_with_sco_only to FALSE"); + } +#else + p_scb->retry_with_sco_only = TRUE; + APPL_TRACE_API0("Setting retry_with_sco_only to TRUE"); +#endif + } + } + else + { + if(p_scb->retry_with_sco_only) + APPL_TRACE_API0("retrying with SCO only"); + p_scb->retry_with_sco_only = FALSE; + + BTM_SetEScoMode(BTM_LINK_TYPE_SCO, ¶ms); + } + + bta_ag_cb.sco.p_curr_scb = p_scb; + + /* tell sys to stop av if any */ + bta_sys_sco_use(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + + /* Allow any platform specific pre-SCO set up to take place */ + bta_ag_co_audio_state(bta_ag_scb_to_idx(p_scb), p_scb->app_id, BTA_AG_CO_AUD_STATE_SETUP); + +#if (BTM_SCO_HCI_INCLUDED == TRUE ) +#if (BTM_WBS_INCLUDED == TRUE) + if (esco_codec == BTA_AG_CODEC_MSBC) + pcm_sample_rate = BTA_DM_SCO_SAMP_RATE_16K; + else +#endif + pcm_sample_rate = BTA_DM_SCO_SAMP_RATE_8K; + + sco_route = bta_dm_sco_co_init(pcm_sample_rate, pcm_sample_rate, &codec_info, p_scb->app_id); +#endif + +#if (BTM_WBS_INCLUDED == TRUE ) + if (esco_codec == BTA_AG_CODEC_MSBC) + { + /* Enable mSBC codec in fw */ + BTM_SetWBSCodec (esco_codec); + } + + /* Specify PCM input for SBC codec in fw */ + BTM_ConfigI2SPCM (esco_codec, (UINT8)HCI_BRCM_I2SPCM_IS_DEFAULT_ROLE, (UINT8)HCI_BRCM_I2SPCM_SAMPLE_DEFAULT, (UINT8)HCI_BRCM_I2SPCM_CLOCK_DEFAULT); + + /* This setting may not be necessary */ + /* To be verified with stable 2049 boards */ + if (esco_codec == BTA_AG_CODEC_MSBC) + BTM_WriteVoiceSettings (BTM_VOICE_SETTING_TRANS); + else + BTM_WriteVoiceSettings (BTM_VOICE_SETTING_CVSD); + + /* save the current codec because sco_codec can be updated while SCO is open. */ + p_scb->inuse_codec = esco_codec; +#endif + +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + /* initialize SCO setup, no voice setting for AG, data rate <==> sample rate */ + BTM_ConfigScoPath(sco_route, bta_ag_sco_read_cback, NULL, TRUE); +#endif + bta_ag_cb.sco.cur_idx = p_scb->sco_idx; + } + else + p_scb->retry_with_sco_only = FALSE; + + p_bd_addr = p_scb->peer_addr; + + status = BTM_CreateSco(p_bd_addr, is_orig, params.packet_types, + &p_scb->sco_idx, bta_ag_sco_conn_cback, + bta_ag_sco_disc_cback); + if (status == BTM_CMD_STARTED) + { + if (!is_orig) + { + BTM_RegForEScoEvts(p_scb->sco_idx, bta_ag_esco_connreq_cback); + } + else /* Initiating the connection, set the current sco handle */ + { + bta_ag_cb.sco.cur_idx = p_scb->sco_idx; + } + } + + APPL_TRACE_API4("ag create sco: orig %d, inx 0x%04x, status 0x%x, pkt types 0x%04x", + is_orig, p_scb->sco_idx, status, params.packet_types); +} + +#if (BTM_WBS_INCLUDED == TRUE ) +/******************************************************************************* +** +** Function bta_ag_cn_timer_cback +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_cn_timer_cback (TIMER_LIST_ENT *p_tle) +{ + tBTA_AG_SCB *p_scb; + + if (p_tle) + { + p_scb = (tBTA_AG_SCB *)p_tle->param; + + if (p_scb) + { + /* Announce that codec negotiation failed. */ + bta_ag_sco_codec_nego(p_scb, FALSE); + + /* call app callback */ + bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_CLOSE_EVT); + } + } +} + +/******************************************************************************* +** +** Function bta_ag_codec_negotiate +** +** Description Initiate codec negotiation by sending AT command. +** If not necessary, skip negotiation. +** +** Returns void +** +*******************************************************************************/ +void bta_ag_codec_negotiate(tBTA_AG_SCB *p_scb) +{ + bta_ag_cb.sco.p_curr_scb = p_scb; + + if (p_scb->codec_updated || p_scb->codec_fallback) + { + /* Change the power mode to Active until sco open is completed. */ + bta_sys_busy(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + + /* Send +BCS to the peer */ + bta_ag_send_bcs(p_scb, NULL); + + /* Start timer to handle timeout */ + p_scb->cn_timer.p_cback = (TIMER_CBACK*)&bta_ag_cn_timer_cback; + p_scb->cn_timer.param = (INT32)p_scb; + bta_sys_start_timer(&p_scb->cn_timer, 0, BTA_AG_CODEC_NEGO_TIMEOUT); + } + else + { + /* use same codec type as previous SCO connection, skip codec negotiation */ + bta_ag_sco_codec_nego(p_scb, TRUE); + } +} +#endif + +/******************************************************************************* +** +** Function bta_ag_sco_event +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +static void bta_ag_sco_event(tBTA_AG_SCB *p_scb, UINT8 event) +{ + tBTA_AG_SCO_CB *p_sco = &bta_ag_cb.sco; +#if (BTM_WBS_INCLUDED == TRUE ) + tBTA_AG_SCB *p_cn_scb = NULL; /* For codec negotiation */ +#endif +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + BT_HDR *p_buf; +#endif +#if BTA_AG_SCO_DEBUG == TRUE + UINT8 in_state = p_sco->state; + + APPL_TRACE_EVENT5("BTA ag sco evt (hdl 0x%04x): State %d (%s), Event %d (%s)", + p_scb->sco_idx, + p_sco->state, bta_ag_sco_state_str(p_sco->state), + event, bta_ag_sco_evt_str(event)); +#else + APPL_TRACE_EVENT3("BTA ag sco evt (hdl 0x%04x): State %d, Event %d", + p_scb->sco_idx, p_sco->state, event); +#endif + +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + if (event == BTA_AG_SCO_CI_DATA_E) + { + while (TRUE) + { + bta_dm_sco_co_out_data(&p_buf); + if (p_buf) + { + if (p_sco->state == BTA_AG_SCO_OPEN_ST) + BTM_WriteScoData(p_sco->p_curr_scb->sco_idx, p_buf); + else + GKI_freebuf(p_buf); + } + else + break; + } + + return; + } +#endif + + switch (p_sco->state) + { + case BTA_AG_SCO_SHUTDOWN_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_SHUTDOWN_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_LISTEN_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection (Additional channel) */ + bta_ag_create_sco(p_scb, FALSE); + break; + + case BTA_AG_SCO_OPEN_E: + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + +#if (BTM_WBS_INCLUDED == TRUE ) + /* start codec negotiation */ + p_sco->state = BTA_AG_SCO_CODEC_ST; + p_cn_scb = p_scb; +#else + /* create sco connection to peer */ + bta_ag_create_sco(p_scb, TRUE); + p_sco->state = BTA_AG_SCO_OPENING_ST; +#endif + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + + if (p_scb == p_sco->p_curr_scb) + p_sco->p_curr_scb = NULL; + + /* If last SCO instance then finish shutting down */ + if (!bta_ag_other_scb_open(p_scb)) + { + p_sco->state = BTA_AG_SCO_SHUTDOWN_ST; + } + break; + + case BTA_AG_SCO_CLOSE_E: + /* remove listening connection */ + /* Ignore the event. We need to keep listening SCO for the active SLC */ + APPL_TRACE_WARNING1("BTA_AG_SCO_LISTEN_ST: Ignoring event %d", event); + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* sco failed; create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_LISTEN_ST: Ignoring event %d", event); + break; + } + break; + +#if (BTM_WBS_INCLUDED == TRUE ) + case BTA_AG_SCO_CODEC_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection (Additional channel) */ + bta_ag_create_sco(p_scb, FALSE); + break; + + case BTA_AG_SCO_CN_DONE_E: + /* create sco connection to peer */ + bta_ag_create_sco(p_scb, TRUE); + p_sco->state = BTA_AG_SCO_OPENING_ST; + break; + + case BTA_AG_SCO_XFER_E: + /* save xfer scb */ + p_sco->p_xfer_scb = p_scb; + p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + + if (p_scb == p_sco->p_curr_scb) + p_sco->p_curr_scb = NULL; + + /* If last SCO instance then finish shutting down */ + if (!bta_ag_other_scb_open(p_scb)) + { + p_sco->state = BTA_AG_SCO_SHUTDOWN_ST; + } + break; + + case BTA_AG_SCO_CLOSE_E: + /* sco open is not started yet. just go back to listening */ + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* sco failed; create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_CODEC_ST: Ignoring event %d", event); + break; + } + break; +#endif + + case BTA_AG_SCO_OPENING_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* second headset has now joined */ + /* create sco listen connection (Additional channel) */ + if (p_scb != p_sco->p_curr_scb) + { + bta_ag_create_sco(p_scb, FALSE); + } + break; + +#if (BTM_WBS_INCLUDED == TRUE) + case BTA_AG_SCO_REOPEN_E: + /* start codec negotiation */ + p_sco->state = BTA_AG_SCO_CODEC_ST; + p_cn_scb = p_scb; + break; +#endif + + case BTA_AG_SCO_XFER_E: + /* save xfer scb */ + p_sco->p_xfer_scb = p_scb; + p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST; + break; + + case BTA_AG_SCO_CLOSE_E: + p_sco->state = BTA_AG_SCO_OPEN_CL_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* If not opening scb, just close it */ + if (p_scb != p_sco->p_curr_scb) + { + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + } + else + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + + break; + + case BTA_AG_SCO_CONN_OPEN_E: + p_sco->state = BTA_AG_SCO_OPEN_ST; + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* sco failed; create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_OPENING_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_OPEN_CL_ST: + switch (event) + { + case BTA_AG_SCO_XFER_E: + /* save xfer scb */ + p_sco->p_xfer_scb = p_scb; + + p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST; + break; + + case BTA_AG_SCO_OPEN_E: + p_sco->state = BTA_AG_SCO_OPENING_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* If not opening scb, just close it */ + if (p_scb != p_sco->p_curr_scb) + { + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + } + else + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + + break; + + case BTA_AG_SCO_CONN_OPEN_E: + /* close sco connection */ + bta_ag_remove_sco(p_scb, TRUE); + + p_sco->state = BTA_AG_SCO_CLOSING_ST; + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* sco failed; create sco listen connection */ + + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_OPEN_CL_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_OPEN_XFER_ST: + switch (event) + { + case BTA_AG_SCO_CLOSE_E: + /* close sco connection */ + bta_ag_remove_sco(p_scb, TRUE); + + p_sco->state = BTA_AG_SCO_CLOSING_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* remove all connection */ + bta_ag_remove_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* closed sco; place in listen mode and + accept the transferred connection */ + bta_ag_create_sco(p_scb, FALSE); /* Back into listen mode */ + + /* Accept sco connection with xfer scb */ + bta_ag_sco_conn_rsp(p_sco->p_xfer_scb, &p_sco->conn_data); + p_sco->state = BTA_AG_SCO_OPENING_ST; + p_sco->p_curr_scb = p_sco->p_xfer_scb; + p_sco->cur_idx = p_sco->p_xfer_scb->sco_idx; + p_sco->p_xfer_scb = NULL; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_OPEN_XFER_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_OPEN_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* second headset has now joined */ + /* create sco listen connection (Additional channel) */ + if (p_scb != p_sco->p_curr_scb) + { + bta_ag_create_sco(p_scb, FALSE); + } + break; + + case BTA_AG_SCO_XFER_E: + /* close current sco connection */ + bta_ag_remove_sco(p_sco->p_curr_scb, TRUE); + + /* save xfer scb */ + p_sco->p_xfer_scb = p_scb; + + p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST; + break; + + case BTA_AG_SCO_CLOSE_E: + /* close sco connection if active */ + if (bta_ag_remove_sco(p_scb, TRUE)) + { + p_sco->state = BTA_AG_SCO_CLOSING_ST; + } + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* remove all listening connections */ + bta_ag_remove_sco(p_scb, FALSE); + + /* If SCO was active on this scb, close it */ + if (p_scb == p_sco->p_curr_scb) + { + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + } + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* peer closed sco; create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_OPEN_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_CLOSING_ST: + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection (Additional channel) */ + if (p_scb != p_sco->p_curr_scb) + { + bta_ag_create_sco(p_scb, FALSE); + } + break; + + case BTA_AG_SCO_OPEN_E: + p_sco->state = BTA_AG_SCO_CLOSE_OP_ST; + break; + + case BTA_AG_SCO_XFER_E: + /* save xfer scb */ + p_sco->p_xfer_scb = p_scb; + + p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* If not closing scb, just close it */ + if (p_scb != p_sco->p_curr_scb) + { + /* remove listening connection */ + bta_ag_remove_sco(p_scb, FALSE); + } + else + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* peer closed sco; create sco listen connection */ + bta_ag_create_sco(p_scb, FALSE); + + p_sco->state = BTA_AG_SCO_LISTEN_ST; + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_CLOSING_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_CLOSE_OP_ST: + switch (event) + { + case BTA_AG_SCO_CLOSE_E: + p_sco->state = BTA_AG_SCO_CLOSING_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + break; + + case BTA_AG_SCO_CONN_CLOSE_E: +#if (BTM_WBS_INCLUDED == TRUE ) + /* start codec negotiation */ + p_sco->state = BTA_AG_SCO_CODEC_ST; + p_cn_scb = p_scb; +#else + /* open sco connection */ + bta_ag_create_sco(p_scb, TRUE); + p_sco->state = BTA_AG_SCO_OPENING_ST; +#endif + break; + + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection (Additional channel) */ + if (p_scb != p_sco->p_curr_scb) + { + bta_ag_create_sco(p_scb, FALSE); + } + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_CLOSE_OP_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_CLOSE_XFER_ST: + switch (event) + { + case BTA_AG_SCO_CONN_OPEN_E: + /* close sco connection so headset can be transferred + Probably entered this state from "opening state" */ + bta_ag_remove_sco(p_scb, TRUE); + break; + + case BTA_AG_SCO_CLOSE_E: + /* clear xfer scb */ + p_sco->p_xfer_scb = NULL; + + p_sco->state = BTA_AG_SCO_CLOSING_ST; + break; + + case BTA_AG_SCO_SHUTDOWN_E: + /* clear xfer scb */ + p_sco->p_xfer_scb = NULL; + + p_sco->state = BTA_AG_SCO_SHUTTING_ST; + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* closed sco; place old sco in listen mode, + take current sco out of listen, and + create originating sco for current */ + bta_ag_create_sco(p_scb, FALSE); + bta_ag_remove_sco(p_sco->p_xfer_scb, FALSE); + +#if (BTM_WBS_INCLUDED == TRUE ) + /* start codec negotiation */ + p_sco->state = BTA_AG_SCO_CODEC_ST; + p_cn_scb = p_sco->p_xfer_scb; + p_sco->p_xfer_scb = NULL; +#else + /* create sco connection to peer */ + bta_ag_create_sco(p_sco->p_xfer_scb, TRUE); + p_sco->p_xfer_scb = NULL; + p_sco->state = BTA_AG_SCO_OPENING_ST; +#endif + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_CLOSE_XFER_ST: Ignoring event %d", event); + break; + } + break; + + case BTA_AG_SCO_SHUTTING_ST: + switch (event) + { + case BTA_AG_SCO_CONN_OPEN_E: + /* close sco connection; wait for conn close event */ + bta_ag_remove_sco(p_scb, TRUE); + break; + + case BTA_AG_SCO_CONN_CLOSE_E: + /* If last SCO instance then finish shutting down */ + if (!bta_ag_other_scb_open(p_scb)) + { + p_sco->state = BTA_AG_SCO_SHUTDOWN_ST; + } + else /* Other instance is still listening */ + { + p_sco->state = BTA_AG_SCO_LISTEN_ST; + } + + if (p_scb == p_sco->p_curr_scb) + { + p_sco->p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX; + p_sco->p_curr_scb = NULL; + } + break; + + case BTA_AG_SCO_LISTEN_E: + /* create sco listen connection (Additional channel) */ + if (p_scb != p_sco->p_curr_scb) + { + bta_ag_create_sco(p_scb, FALSE); + } + break; + + case BTA_AG_SCO_SHUTDOWN_E: + if (!bta_ag_other_scb_open(p_scb)) + { + p_sco->state = BTA_AG_SCO_SHUTDOWN_ST; + } + else /* Other instance is still listening */ + { + p_sco->state = BTA_AG_SCO_LISTEN_ST; + } + + if (p_scb == p_sco->p_curr_scb) + { + p_sco->p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX; + p_sco->p_curr_scb = NULL; + } + break; + + default: + APPL_TRACE_WARNING1("BTA_AG_SCO_SHUTTING_ST: Ignoring event %d", event); + break; + } + break; + + default: + break; + } +#if BTA_AG_SCO_DEBUG == TRUE + if (p_sco->state != in_state) + { + APPL_TRACE_EVENT3("BTA AG SCO State Change: [%s] -> [%s] after Event [%s]", + bta_ag_sco_state_str(in_state), + bta_ag_sco_state_str(p_sco->state), + bta_ag_sco_evt_str(event)); + } +#endif + +#if (BTM_WBS_INCLUDED == TRUE ) + if (p_cn_scb) + { + bta_ag_codec_negotiate(p_cn_scb); + } +#endif +} + +/******************************************************************************* +** +** Function bta_ag_sco_is_open +** +** Description Check if sco is open for this scb. +** +** +** Returns TRUE if sco open for this scb, FALSE otherwise. +** +*******************************************************************************/ +BOOLEAN bta_ag_sco_is_open(tBTA_AG_SCB *p_scb) +{ + return ((bta_ag_cb.sco.state == BTA_AG_SCO_OPEN_ST) && + (bta_ag_cb.sco.p_curr_scb == p_scb)); +} + +/******************************************************************************* +** +** Function bta_ag_sco_is_opening +** +** Description Check if sco is in Opening state. +** +** +** Returns TRUE if sco is in Opening state for this scb, FALSE otherwise. +** +*******************************************************************************/ +BOOLEAN bta_ag_sco_is_opening(tBTA_AG_SCB *p_scb) +{ +#if (BTM_WBS_INCLUDED == TRUE ) + return (((bta_ag_cb.sco.state == BTA_AG_SCO_OPENING_ST) || + (bta_ag_cb.sco.state == BTA_AG_SCO_OPENING_ST)) && + (bta_ag_cb.sco.p_curr_scb == p_scb)); +#else + return ((bta_ag_cb.sco.state == BTA_AG_SCO_OPENING_ST) && + (bta_ag_cb.sco.p_curr_scb == p_scb)); +#endif +} + +/******************************************************************************* +** +** Function bta_ag_sco_listen +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_listen(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + bta_ag_sco_event(p_scb, BTA_AG_SCO_LISTEN_E); +} + +/******************************************************************************* +** +** Function bta_ag_sco_open +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_open(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + UINT8 event; + + /* if another scb using sco, this is a transfer */ + if (bta_ag_cb.sco.p_curr_scb != NULL && bta_ag_cb.sco.p_curr_scb != p_scb) + { + event = BTA_AG_SCO_XFER_E; + } + /* else it is an open */ + else + { + event = BTA_AG_SCO_OPEN_E; + } + + bta_ag_sco_event(p_scb, event); +} + +/******************************************************************************* +** +** Function bta_ag_sco_close +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_close(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + /* if scb is in use */ +#if (BTM_WBS_INCLUDED == TRUE ) + /* sco_idx is not allocated in SCO_CODEC_ST, we still need to move to listening state. */ + if ((p_scb->sco_idx != BTM_INVALID_SCO_INDEX) || (bta_ag_cb.sco.state == BTA_AG_SCO_CODEC_ST)) +#else + if (p_scb->sco_idx != BTM_INVALID_SCO_INDEX) +#endif + { + APPL_TRACE_DEBUG1("bta_ag_sco_close: sco_inx = %d", p_scb->sco_idx); + bta_ag_sco_event(p_scb, BTA_AG_SCO_CLOSE_E); + } +} + +#if (BTM_WBS_INCLUDED == TRUE ) + +/******************************************************************************* +** +** Function bta_ag_sco_codec_nego +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_codec_nego(tBTA_AG_SCB *p_scb, BOOLEAN result) +{ + if(result == TRUE) + { + /* Subsequent sco connection will skip codec negotiation */ + p_scb->codec_updated = FALSE; + + bta_ag_sco_event(p_scb, BTA_AG_SCO_CN_DONE_E); + } + else /* codec negotiation failed */ + bta_ag_sco_event(p_scb, BTA_AG_SCO_CLOSE_E); +} +#endif + +/******************************************************************************* +** +** Function bta_ag_sco_shutdown +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_shutdown(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + bta_ag_sco_event(p_scb, BTA_AG_SCO_SHUTDOWN_E); +} + +/******************************************************************************* +** +** Function bta_ag_sco_conn_open +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_conn_open(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + bta_ag_sco_event(p_scb, BTA_AG_SCO_CONN_OPEN_E); + + bta_sys_sco_open(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + + bta_ag_co_audio_state(bta_ag_scb_to_idx(p_scb), p_scb->app_id, BTA_AG_CO_AUD_STATE_ON); + +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + /* open SCO codec if SCO is routed through transport */ + bta_dm_sco_co_open(bta_ag_scb_to_idx(p_scb), BTA_SCO_OUT_PKT_SIZE, BTA_AG_CI_SCO_DATA_EVT); +#endif + + /* call app callback */ + bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_OPEN_EVT); + + p_scb->retry_with_sco_only = FALSE; +} + +/******************************************************************************* +** +** Function bta_ag_sco_conn_close +** +** Description +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_conn_close(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ + UINT16 handle = bta_ag_scb_to_idx(p_scb); + + /* clear current scb */ + bta_ag_cb.sco.p_curr_scb = NULL; + p_scb->sco_idx = BTM_INVALID_SCO_INDEX; + +#if (BTM_WBS_INCLUDED == TRUE) + /* codec_fallback is set when AG is initiator and connection failed for mSBC. */ + if (p_scb->codec_fallback && p_scb->svc_conn) + { + bta_ag_sco_event(p_scb, BTA_AG_SCO_REOPEN_E); + } + else if (p_scb->retry_with_sco_only && p_scb->svc_conn) + { + /* retry_with_sco_only is set when AG is initiator and connection failed for eSCO */ + bta_ag_create_sco(p_scb, TRUE); + } +#else + /* retry_with_sco_only, will be set only when AG is initiator + ** and AG is first trying to establish an eSCO connection */ + if (p_scb->retry_with_sco_only && p_scb->svc_conn) + { + bta_ag_create_sco(p_scb, TRUE); + } +#endif + else + { + /* Indicate if the closing of audio is because of transfer */ + if (bta_ag_cb.sco.p_xfer_scb) + bta_ag_co_audio_state(handle, p_scb->app_id, BTA_AG_CO_AUD_STATE_OFF_XFER); + else + bta_ag_co_audio_state(handle, p_scb->app_id, BTA_AG_CO_AUD_STATE_OFF); + + bta_ag_sco_event(p_scb, BTA_AG_SCO_CONN_CLOSE_E); + + bta_sys_sco_close(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + + /* if av got suspended by this call, let it resume. */ + /* In case call stays alive regardless of sco, av should not be affected. */ + if(((p_scb->call_ind == BTA_AG_CALL_INACTIVE) && (p_scb->callsetup_ind == BTA_AG_CALLSETUP_NONE)) + || (p_scb->post_sco == BTA_AG_POST_SCO_CALL_END)) + { + bta_sys_sco_unuse(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + } + + /* call app callback */ + bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_CLOSE_EVT); + } + p_scb->retry_with_sco_only = FALSE; +} + +/******************************************************************************* +** +** Function bta_ag_sco_conn_rsp +** +** Description Process the SCO connection request +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_sco_conn_rsp(tBTA_AG_SCB *p_scb, tBTM_ESCO_CONN_REQ_EVT_DATA *p_data) +{ + tBTM_ESCO_PARAMS resp; + UINT8 hci_status = HCI_SUCCESS; +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + tBTA_CODEC_INFO codec_info = {BTA_SCO_CODEC_PCM}; + UINT32 pcm_sample_rate; +#endif + + if (bta_ag_cb.sco.state == BTA_AG_SCO_LISTEN_ST || + bta_ag_cb.sco.state == BTA_AG_SCO_CLOSE_XFER_ST || + bta_ag_cb.sco.state == BTA_AG_SCO_OPEN_XFER_ST) + { + /* If script overrided sco parameter by BTA_CMD_SET_ESCO_PARAM */ + if (bta_ag_cb.sco.param_updated) + { + resp = bta_ag_cb.sco.params; + } + else + { + resp.rx_bw = BTM_64KBITS_RATE; + resp.tx_bw = BTM_64KBITS_RATE; + resp.max_latency = 10; + resp.voice_contfmt = 0x60; + resp.retrans_effort = BTM_ESCO_RETRANS_POWER; + + if (p_data->link_type == BTM_LINK_TYPE_SCO) + { + resp.packet_types = (BTM_SCO_LINK_ONLY_MASK | + BTM_SCO_PKT_TYPES_MASK_NO_2_EV3 | + BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 | + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5); + } + else /* Allow controller to use all types available except 5-slot EDR */ + { + resp.packet_types = (BTM_SCO_LINK_ALL_PKT_MASK | + BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | + BTM_SCO_PKT_TYPES_MASK_NO_3_EV5); + } + } + + /* tell sys to stop av if any */ + bta_sys_sco_use(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr); + + /* Allow any platform specific pre-SCO set up to take place */ + bta_ag_co_audio_state(bta_ag_scb_to_idx(p_scb), p_scb->app_id, BTA_AG_CO_AUD_STATE_SETUP); + +#if (BTM_WBS_INCLUDED == TRUE ) + /* When HS initiated SCO, it cannot be WBS. */ + BTM_ConfigI2SPCM (BTM_SCO_CODEC_CVSD, (UINT8)HCI_BRCM_I2SPCM_IS_DEFAULT_ROLE, (UINT8)HCI_BRCM_I2SPCM_SAMPLE_DEFAULT, (UINT8)HCI_BRCM_I2SPCM_CLOCK_DEFAULT); +#endif + +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + pcm_sample_rate = BTA_DM_SCO_SAMP_RATE_8K; + + /* initialize SCO setup, no voice setting for AG, data rate <==> sample rate */ + BTM_ConfigScoPath(bta_dm_sco_co_init(pcm_sample_rate, pcm_sample_rate, &codec_info, p_scb->app_id), + bta_ag_sco_read_cback, NULL, TRUE); +#endif + } + else + hci_status = HCI_ERR_HOST_REJECT_DEVICE; + +#if (BTM_WBS_INCLUDED == TRUE ) + /* If SCO open was initiated from HS, it must be CVSD */ + p_scb->inuse_codec = BTA_AG_CODEC_NONE; +#endif + + BTM_EScoConnRsp(p_data->sco_inx, hci_status, &resp); +} + +/******************************************************************************* +** +** Function bta_ag_ci_sco_data +** +** Description Process the SCO data ready callin event +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_ci_sco_data(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data) +{ +#if (BTM_SCO_HCI_INCLUDED == TRUE ) + bta_ag_sco_event(p_scb, BTA_AG_SCO_CI_DATA_E); +#endif +} + +/******************************************************************************* +** +** Function bta_ag_set_esco_param +** +** Description Update esco parameters from script wrapper. +** +** +** Returns void +** +*******************************************************************************/ +void bta_ag_set_esco_param(BOOLEAN set_reset, tBTM_ESCO_PARAMS *param) +{ + if(set_reset == FALSE) /* reset the parameters to default */ + { + bta_ag_cb.sco.param_updated = FALSE; + APPL_TRACE_DEBUG0("bta_ag_set_esco_param : Resetting ESCO parameters to default"); + } + else + { + bta_ag_cb.sco.param_updated = TRUE; + bta_ag_cb.sco.params = *param; + APPL_TRACE_DEBUG0("bta_ag_set_esco_param : Setting ESCO parameters"); + } +} + +/******************************************************************************* +** Debugging functions +*******************************************************************************/ + +#if BTA_AG_SCO_DEBUG == TRUE +static char *bta_ag_sco_evt_str(UINT8 event) +{ + switch (event) + { + case BTA_AG_SCO_LISTEN_E: + return "Listen Request"; + case BTA_AG_SCO_OPEN_E: + return "Open Request"; + case BTA_AG_SCO_XFER_E: + return "Transfer Request"; +#if (BTM_WBS_INCLUDED == TRUE ) + case BTA_AG_SCO_CN_DONE_E: + return "Codec Negotiation Done"; + case BTA_AG_SCO_REOPEN_E: + return "Reopen Request"; +#endif + case BTA_AG_SCO_CLOSE_E: + return "Close Request"; + case BTA_AG_SCO_SHUTDOWN_E: + return "Shutdown Request"; + case BTA_AG_SCO_CONN_OPEN_E: + return "Opened"; + case BTA_AG_SCO_CONN_CLOSE_E: + return "Closed"; + case BTA_AG_SCO_CI_DATA_E : + return "Sco Data"; + default: + return "Unknown SCO Event"; + } +} + +static char *bta_ag_sco_state_str(UINT8 state) +{ + switch (state) + { + case BTA_AG_SCO_SHUTDOWN_ST: + return "Shutdown"; + case BTA_AG_SCO_LISTEN_ST: + return "Listening"; +#if (BTM_WBS_INCLUDED == TRUE ) + case BTA_AG_SCO_CODEC_ST: + return "Codec Negotiation"; +#endif + case BTA_AG_SCO_OPENING_ST: + return "Opening"; + case BTA_AG_SCO_OPEN_CL_ST: + return "Open while closing"; + case BTA_AG_SCO_OPEN_XFER_ST: + return "Opening while Transferring"; + case BTA_AG_SCO_OPEN_ST: + return "Open"; + case BTA_AG_SCO_CLOSING_ST: + return "Closing"; + case BTA_AG_SCO_CLOSE_OP_ST: + return "Close while Opening"; + case BTA_AG_SCO_CLOSE_XFER_ST: + return "Close while Transferring"; + case BTA_AG_SCO_SHUTTING_ST: + return "Shutting Down"; + default: + return "Unknown SCO State"; + } +} + +#endif |