[svn-commits] mnicholson: trunk r815 - /trunk/channels/chan_mobile.c
SVN commits to the Digium repositories
svn-commits at lists.digium.com
Wed Mar 18 16:53:40 CDT 2009
Author: mnicholson
Date: Wed Mar 18 16:53:37 2009
New Revision: 815
URL: http://svn.digium.com/svn-view/asterisk-addons?view=rev&rev=815
Log:
Merged in changes from the chan_mobile refactor branch.
With these changes the code should be easier to read and maintain, mobile
connections should be more stable, and audio quality should be much better.
Modified:
trunk/channels/chan_mobile.c
Modified: trunk/channels/chan_mobile.c
URL: http://svn.digium.com/svn-view/asterisk-addons/trunk/channels/chan_mobile.c?view=diff&rev=815&r1=814&r2=815
==============================================================================
--- trunk/channels/chan_mobile.c (original)
+++ trunk/channels/chan_mobile.c Wed Mar 18 16:53:37 2009
@@ -69,6 +69,7 @@
#include <asterisk/dsp.h>
#include <asterisk/app.h>
#include <asterisk/manager.h>
+#include <asterisk/io.h>
#define MBL_CONFIG "mobile.conf"
@@ -82,34 +83,14 @@
static pthread_t discovery_thread = AST_PTHREADT_NULL; /* The discovery thread */
static sdp_session_t *sdp_session;
+AST_MUTEX_DEFINE_STATIC(unload_mutex);
+static int unloading_flag = 0;
+static inline int check_unloading();
+static inline void set_unloading();
+
enum mbl_type {
MBL_TYPE_PHONE,
MBL_TYPE_HEADSET
-};
-
-enum mbl_state {
- MBL_STATE_INIT = 0,
- MBL_STATE_INIT1,
- MBL_STATE_INIT2,
- MBL_STATE_INIT3,
- MBL_STATE_INIT4,
- MBL_STATE_INIT5,
- MBL_STATE_INIT6,
- MBL_STATE_INIT7,
- MBL_STATE_PREIDLE,
- MBL_STATE_IDLE,
- MBL_STATE_DIAL,
- MBL_STATE_DIAL1,
- MBL_STATE_OUTGOING,
- MBL_STATE_RING,
- MBL_STATE_RING2,
- MBL_STATE_RING3,
- MBL_STATE_INCOMING,
- MBL_STATE_HANGUP,
- MBL_STATE_INSMS,
- MBL_STATE_OUTSMS,
- MBL_STATE_OUTSMS1,
- MBL_STATE_OUTSMS2
};
struct adapter_pvt {
@@ -119,60 +100,75 @@
bdaddr_t addr; /* adddress of adapter */
unsigned int inuse:1; /* are we in use ? */
unsigned int alignment_detection:1; /* do alignment detection on this adpater? */
- int sco_socket;
+ struct io_context *io; /*!< io context for audio connections */
+ struct io_context *accept_io; /*!< io context for sco listener */
+ int *sco_id; /*!< the io context id of the sco listener socket */
+ int sco_socket; /*!< sco listener socket */
+ pthread_t sco_listener_thread; /*!< sco listener thread */
AST_LIST_ENTRY(adapter_pvt) entry;
};
static AST_RWLIST_HEAD_STATIC(adapters, adapter_pvt);
+struct msg_queue_entry;
+struct hfp_pvt;
struct mbl_pvt {
struct ast_channel *owner; /* Channel we belong to, possibly NULL */
struct ast_frame fr; /* "null" frame */
+ ast_mutex_t lock; /*!< pvt lock */
+ /*! queue for messages we are expecting */
+ AST_LIST_HEAD_NOLOCK(msg_queue, msg_queue_entry) msg_queue;
enum mbl_type type; /* Phone or Headset */
char id[31]; /* The id from mobile.conf */
int group; /* group number for group dialling */
bdaddr_t addr; /* address of device */
struct adapter_pvt *adapter; /* the adapter we use */
char context[AST_MAX_CONTEXT]; /* the context for incoming calls */
- char connected; /* is it connected? */
+ struct hfp_pvt *hfp; /*!< hfp pvt */
int rfcomm_port; /* rfcomm port number */
int rfcomm_socket; /* rfcomm socket descriptor */
char rfcomm_buf[256];
char io_buf[CHANNEL_FRAME_SIZE + AST_FRIENDLY_OFFSET];
- char io_save_buf[DEVICE_FRAME_SIZE];
- int io_save_len;
int io_pipe[2];
+ struct ast_smoother *smoother; /* our smoother, for making 48 byte frames */
int sco_socket; /* sco socket descriptor */
- pthread_t sco_listener_thread; /* inbound sco listener for this device */
- enum mbl_state state; /* monitor thread current state */
pthread_t monitor_thread; /* monitor thread handle */
- char dial_number[AST_MAX_EXTENSION]; /* number for the monitor thread to dial */
- int dial_timeout;
- char ciev_call_0[5]; /* dynamically built reponse strings */
- char ciev_call_1[5];
- char ciev_callsetup_0[5];
- char ciev_callsetup_1[5];
- char ciev_callsetup_2[5];
- char ciev_callsetup_3[5];
+ int timeout; /*!< used to set the timeout for rfcomm data (may be used in the future) */
unsigned int no_callsetup:1;
unsigned int has_sms:1;
- unsigned int sent_answer:1;
unsigned int do_alignment_detection:1;
unsigned int alignment_detection_triggered:1;
- unsigned int do_hangup:1;
unsigned int blackberry:1;
short alignment_samples[4];
int alignment_count;
- char sms_txt[160];
+ int ring_sched_id;
struct ast_dsp *dsp;
- struct ast_frame *dsp_fr;
- int dtmf_skip;
- int skip_frames;
- char hangup_count;
+ struct sched_context *sched;
+
+ /* flags */
+ unsigned int outgoing:1; /*!< outgoing call */
+ unsigned int incoming:1; /*!< incoming call */
+ unsigned int outgoing_sms:1; /*!< outgoing sms */
+ unsigned int incoming_sms:1; /*!< outgoing sms */
+ unsigned int needcallerid:1; /*!< we need callerid */
+ unsigned int needchup:1; /*!< we need to send a chup */
+ unsigned int needring:1; /*!< we need to send a RING */
+ unsigned int answered:1; /*!< we sent/recieved an answer */
+ unsigned int connected:1; /*!< do we have an rfcomm connection to a device */
+
AST_LIST_ENTRY(mbl_pvt) entry;
};
static AST_RWLIST_HEAD_STATIC(devices, mbl_pvt);
+
+static int handle_response_ok(struct mbl_pvt *pvt, char *buf);
+static int handle_response_error(struct mbl_pvt *pvt, char *buf);
+static int handle_response_ciev(struct mbl_pvt *pvt, char *buf);
+static int handle_response_clip(struct mbl_pvt *pvt, char *buf);
+static int handle_response_ring(struct mbl_pvt *pvt, char *buf);
+static int handle_response_cmti(struct mbl_pvt *pvt, char *buf);
+static int handle_response_cmgr(struct mbl_pvt *pvt, char *buf);
+static int handle_sms_prompt(struct mbl_pvt *pvt, char *buf);
/* CLI stuff */
static char *handle_cli_mobile_show_devices(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
@@ -191,7 +187,7 @@
static char *mblstatus_desc =
"MobileStatus(Device,Variable)\n"
" Device - Id of mobile device from mobile.conf\n"
-" Variable - Variable to store status in will be 1-3.\n"
+" Variable - Variable to store status in will be 1-3.\n"
" In order, Disconnected, Connected & Free, Connected & Busy.\n";
static char *app_mblsendsms = "MobileSendSMS";
@@ -207,7 +203,6 @@
static int mbl_call(struct ast_channel *ast, char *dest, int timeout);
static int mbl_hangup(struct ast_channel *ast);
static int mbl_answer(struct ast_channel *ast);
-static int mbl_digit_begin(struct ast_channel *ast, char digit);
static int mbl_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
static struct ast_frame *mbl_read(struct ast_channel *ast);
static int mbl_write(struct ast_channel *ast, struct ast_frame *frame);
@@ -216,16 +211,238 @@
static void do_alignment_detection(struct mbl_pvt *pvt, char *buf, int buflen);
+static int mbl_queue_control(struct mbl_pvt *pvt, enum ast_control_frame_type control);
+static int mbl_queue_hangup(struct mbl_pvt *pvt);
+static int mbl_ast_hangup(struct mbl_pvt *pvt);
+
static int rfcomm_connect(bdaddr_t src, bdaddr_t dst, int remote_channel);
-static int rfcomm_write(struct mbl_pvt *pvt, char *buf);
-static int rfcomm_read(struct mbl_pvt *pvt, char *buf, char flush, int timeout);
+static int rfcomm_write(int rsock, char *buf);
+static int rfcomm_write_full(int rsock, char *buf, size_t count);
+static int rfcomm_wait(int rsock, int *ms);
+static ssize_t rfcomm_read(int rsock, char *buf, size_t count);
static int sco_connect(bdaddr_t src, bdaddr_t dst);
static int sco_write(int s, char *buf, int len);
-static int sco_read(int s, char *buf, int len);
+static int sco_read(int *id, int fd, short events, void *data);
+static int sco_accept(int *id, int fd, short events, void *data);
+static int sco_bind(struct adapter_pvt *adapter);
static void *do_sco_listen(void *data);
static int sdp_search(char *addr, int profile);
+
+static int headset_send_ring(const void *data);
+
+/*
+ * bluetooth handsfree profile helpers
+ */
+
+#define HFP_HF_ECNR (1 << 0)
+#define HFP_HF_CW (1 << 1)
+#define HFP_HF_CID (1 << 2)
+#define HFP_HF_VOICE (1 << 3)
+#define HFP_HF_VOLUME (1 << 4)
+#define HFP_HF_STATUS (1 << 5)
+#define HFP_HF_CONTROL (1 << 6)
+
+#define HFP_AG_CW (1 << 0)
+#define HFP_AG_ECNR (1 << 1)
+#define HFP_AG_VOICE (1 << 2)
+#define HFP_AG_RING (1 << 3)
+#define HFP_AG_TAG (1 << 4)
+#define HFP_AG_REJECT (1 << 5)
+#define HFP_AG_STATUS (1 << 6)
+#define HFP_AG_CONTROL (1 << 7)
+#define HFP_AG_ERRORS (1 << 8)
+
+#define HFP_CIND_NONE 0
+#define HFP_CIND_SERVICE 1
+#define HFP_CIND_CALL 2
+#define HFP_CIND_CALLSETUP 3
+#define HFP_CIND_CALLHELD 4
+#define HFP_CIND_SIGNAL 5
+#define HFP_CIND_ROAM 6
+#define HFP_CIND_BATTCHG 7
+
+/* call indicator values */
+#define HFP_CIND_CALL_NONE 0
+#define HFP_CIND_CALL_ACTIVE 1
+
+/* callsetup indicator values */
+#define HFP_CIND_CALLSETUP_NONE 0
+#define HFP_CIND_CALLSETUP_INCOMING 1
+#define HFP_CIND_CALLSETUP_OUTGOING 2
+#define HFP_CIND_CALLSETUP_ALERTING 3
+
+/*!
+ * \brief This struct holds HFP features that we support.
+ */
+struct hfp_hf {
+ int ecnr:1; /*!< echo-cancel/noise reduction */
+ int cw:1; /*!< call waiting and three way calling */
+ int cid:1; /*!< cli presentation (callier id) */
+ int voice:1; /*!< voice recognition activation */
+ int volume:1; /*!< remote volume control */
+ int status:1; /*!< enhanced call status */
+ int control:1; /*!< enhanced call control*/
+};
+
+/*!
+ * \brief This struct holds HFP features the AG supports.
+ */
+struct hfp_ag {
+ int cw:1; /*!< three way calling */
+ int ecnr:1; /*!< echo-cancel/noise reduction */
+ int voice:1; /*!< voice recognition */
+ int ring:1; /*!< in band ring tone capability */
+ int tag:1; /*!< attach a number to a voice tag */
+ int reject:1; /*!< ability to reject a call */
+ int status:1; /*!< enhanced call status */
+ int control:1; /*!< enhanced call control*/
+ int errors:1; /*!< extended error result codes*/
+};
+
+/*!
+ * \brief This struct holds mappings for indications.
+ */
+struct hfp_cind {
+ int service; /*!< whether we have service or not */
+ int call; /*!< call state */
+ int callsetup; /*!< bluetooth call setup indications */
+ int callheld; /*!< bluetooth call hold indications */
+ int signal; /*!< signal strength */
+ int roam; /*!< roaming indicator */
+ int battchg; /*!< battery charge indicator */
+};
+
+
+/*!
+ * \brief This struct holds state information about the current hfp connection.
+ */
+struct hfp_pvt {
+ struct mbl_pvt *owner; /*!< the mbl_pvt struct that owns this struct */
+ int connected:1; /*!< whether a service level connection exists or not */
+ int blackberry:1; /*!< blackberry mode (send CMER before CIND=?) */
+ int nocallsetup:1; /*!< whether we detected a callsetup indicator */
+ struct hfp_ag brsf; /*!< the supported feature set of the AG */
+ int cind_index[16]; /*!< the cind/ciev index to name mapping for this AG */
+ int cind_state[16]; /*!< the cind/ciev state for this AG */
+ struct hfp_cind cind_map; /*!< the cind name to index mapping for this AG */
+ int rsock; /*!< our rfcomm socket */
+ int rport; /*!< our rfcomm port */
+};
+
+
+/* Our supported features.
+ * we only support caller id
+ */
+static struct hfp_hf hfp_our_brsf = {
+ .ecnr = 0,
+ .cw = 0,
+ .cid = 1,
+ .voice = 0,
+ .volume = 0,
+ .status = 0,
+ .control = 0,
+};
+
+
+static int hfp_init(struct hfp_pvt *hfp);
+static int hfp_init_sms(struct hfp_pvt *hfp);
+static int hfp_wait(struct hfp_pvt *hfp);
+static int hfp_parse_ciev(struct hfp_pvt *hfp, char *buf, int *value);
+static char *hfp_parse_clip(struct hfp_pvt *hfp, char *buf);
+static int hfp_parse_cmti(struct hfp_pvt *hfp, char *buf);
+static int hfp_parse_cmgr(struct hfp_pvt *hfp, char *buf, char **from_number, char **text);
+
+static int hfp_brsf2int(struct hfp_hf *hf);
+static struct hfp_ag *hfp_int2brsf(int brsf, struct hfp_ag *ag);
+
+static int hfp_send_brsf(struct hfp_pvt *hfp, struct hfp_hf *brsf);
+static int hfp_send_cind(struct hfp_pvt *hfp);
+static int hfp_send_cind_test(struct hfp_pvt *hfp);
+static int hfp_send_cmer(struct hfp_pvt *hfp, int status);
+static int hfp_send_clip(struct hfp_pvt *hfp, int status);
+static int hfp_send_vgs(struct hfp_pvt *hfp, int value);
+#if 0
+static int hfp_send_vgm(struct hfp_pvt *hfp, int value);
+#endif
+static int hfp_send_dtmf(struct hfp_pvt *hfp, char digit);
+static int hfp_send_cmgf(struct hfp_pvt *hfp, int mode);
+static int hfp_send_cnmi(struct hfp_pvt *hfp);
+static int hfp_send_cmgr(struct hfp_pvt *hfp, int index);
+static int hfp_send_cmgs(struct hfp_pvt *hfp, const char *number);
+static int hfp_send_sms_text(struct hfp_pvt *hfp, const char *message);
+static int hfp_send_chup(struct hfp_pvt *hfp);
+static int hfp_send_atd(struct hfp_pvt *hfp, const char *number);
+static int hfp_send_ata(struct hfp_pvt *hfp);
+
+static int hfp_read_brsf(struct hfp_pvt *hfp);
+static int hfp_read_cind(struct hfp_pvt *hfp);
+static int hfp_read_cind_test(struct hfp_pvt *hfp);
+
+/*
+ * bluetooth headset profile helpers
+ */
+static int hsp_send_ok(int rsock);
+static int hsp_send_error(int rsock);
+static int hsp_send_vgs(int rsock, int gain);
+static int hsp_send_vgm(int rsock, int gain);
+static int hsp_send_ring(int rsock);
+
+
+/*
+ * Hayes AT command helpers
+ */
+typedef enum {
+ /* errors */
+ AT_PARSE_ERROR = -2,
+ AT_READ_ERROR = -1,
+ AT_UNKNOWN = 0,
+ /* at responses */
+ AT_OK,
+ AT_ERROR,
+ AT_RING,
+ AT_BRSF,
+ AT_CIND,
+ AT_CIEV,
+ AT_CLIP,
+ AT_CMTI,
+ AT_CMGR,
+ AT_SMS_PROMPT,
+ /* at commands */
+ AT_A,
+ AT_D,
+ AT_CHUP,
+ AT_CKPD,
+ AT_CMGS,
+ AT_VGM,
+ AT_VGS,
+ AT_VTS,
+} at_message_t;
+
+static int at_match_prefix(char *buf, char *prefix);
+static at_message_t at_read_full(int rsock, char *buf, size_t count);
+static at_message_t at_read(int rsock);
+static inline const char *at_msg2str(at_message_t msg);
+
+struct msg_queue_entry {
+ at_message_t expected;
+ at_message_t response_to;
+ void *data;
+
+ AST_LIST_ENTRY(msg_queue_entry) entry;
+};
+
+static int msg_queue_push(struct mbl_pvt *pvt, at_message_t expect, at_message_t response_to);
+static int msg_queue_push_data(struct mbl_pvt *pvt, at_message_t expect, at_message_t response_to, void *data);
+static struct msg_queue_entry *msg_queue_pop(struct mbl_pvt *pvt);
+static void msg_queue_free_and_pop(struct mbl_pvt *pvt);
+static void msg_queue_flush(struct mbl_pvt *pvt);
+static struct msg_queue_entry *msg_queue_head(struct mbl_pvt *pvt);
+
+/*
+ * channel stuff
+ */
static const struct ast_channel_tech mbl_tech = {
.type = "Mobile",
@@ -235,7 +452,6 @@
.call = mbl_call,
.hangup = mbl_hangup,
.answer = mbl_answer,
- .send_digit_begin = mbl_digit_begin,
.send_digit_end = mbl_digit_end,
.read = mbl_read,
.write = mbl_write,
@@ -257,7 +473,7 @@
case CLI_INIT:
e->command = "mobile show devices";
e->usage =
- "Usage: mobile show devices\n"
+ "Usage: mobile show devices\n"
" Shows the state of Bluetooth Cell / Mobile devices.\n";
return NULL;
case CLI_GENERATE:
@@ -270,11 +486,19 @@
ast_cli(a->fd, FORMAT1, "ID", "Address", "Group", "Adapter", "Connected", "State", "SMS");
AST_RWLIST_RDLOCK(&devices);
AST_RWLIST_TRAVERSE(&devices, pvt, entry) {
+ ast_mutex_lock(&pvt->lock);
ba2str(&pvt->addr, bdaddr);
- snprintf(group, 5, "%d", pvt->group);
- ast_cli(a->fd, FORMAT1, pvt->id, bdaddr, group, pvt->adapter->id, pvt->connected ? "Yes" : "No",
- (pvt->state == MBL_STATE_IDLE) ? "Free" : (pvt->state < MBL_STATE_IDLE) ? "Init" : "Busy",
- (pvt->has_sms) ? "Yes" : "No");
+ snprintf(group, sizeof(group), "%d", pvt->group);
+ ast_cli(a->fd, FORMAT1,
+ pvt->id,
+ bdaddr,
+ group,
+ pvt->adapter->id,
+ pvt->connected ? "Yes" : "No",
+ (!pvt->connected) ? "None" : (pvt->owner) ? "Busy" : (pvt->outgoing_sms || pvt->incoming_sms) ? "SMS" : "Free",
+ (pvt->has_sms) ? "Yes" : "No"
+ );
+ ast_mutex_unlock(&pvt->lock);
}
AST_RWLIST_UNLOCK(&devices);
@@ -300,7 +524,7 @@
case CLI_INIT:
e->command = "mobile search";
e->usage =
- "Usage: mobile search\n"
+ "Usage: mobile search\n"
" Searches for Bluetooth Cell / Mobile devices in range.\n";
return NULL;
case CLI_GENERATE:
@@ -380,14 +604,24 @@
}
AST_RWLIST_UNLOCK(&devices);
- if (!pvt || !pvt->connected) {
+ if (!pvt) {
ast_cli(a->fd, "Device %s not found.\n", a->argv[2]);
- return CLI_SUCCESS;
+ goto e_return;
+ }
+
+ ast_mutex_lock(&pvt->lock);
+ if (!pvt->connected) {
+ ast_cli(a->fd, "Device %s not connected.\n", a->argv[2]);
+ goto e_unlock_pvt;
}
snprintf(buf, sizeof(buf), "%s\r", a->argv[3]);
- rfcomm_write(pvt, buf);
-
+ rfcomm_write(pvt->rfcomm_socket, buf);
+ msg_queue_push(pvt, AT_OK, AT_UNKNOWN);
+
+e_unlock_pvt:
+ ast_mutex_unlock(&pvt->lock);
+e_return:
return CLI_SUCCESS;
}
@@ -430,10 +664,12 @@
AST_RWLIST_UNLOCK(&devices);
if (pvt) {
+ ast_mutex_lock(&pvt->lock);
if (pvt->connected)
stat = 2;
if (pvt->owner)
stat = 3;
+ ast_mutex_unlock(&pvt->lock);
}
snprintf(status, sizeof(status), "%d", stat);
@@ -447,7 +683,7 @@
{
struct mbl_pvt *pvt;
- char *parse;
+ char *parse, *message;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(device);
@@ -486,30 +722,39 @@
if (!pvt) {
ast_log(LOG_ERROR,"Bluetooth device %s wasn't found in the list -- SMS will not be sent.\n", args.device);
- return -1;
- }
-
+ goto e_return;
+ }
+
+ ast_mutex_lock(&pvt->lock);
if (!pvt->connected) {
ast_log(LOG_ERROR,"Bluetooth device %s wasn't connected -- SMS will not be sent.\n", args.device);
- return -1;
+ goto e_unlock_pvt;
}
if (!pvt->has_sms) {
ast_log(LOG_ERROR,"Bluetooth device %s doesn't handle SMS -- SMS will not be sent.\n", args.device);
- return -1;
- }
-
- if (pvt->state != MBL_STATE_IDLE) {
- ast_log(LOG_ERROR,"Bluetooth device %s isn't IDLE -- SMS will not be sent.\n", args.device);
- return -1;
- }
-
- ast_copy_string(pvt->dial_number, args.dest, sizeof(pvt->dial_number));
- ast_copy_string(pvt->sms_txt, args.message, sizeof(pvt->sms_txt));
- pvt->state = MBL_STATE_OUTSMS;
+ goto e_unlock_pvt;
+ }
+
+ message = ast_strdup(args.message);
+
+ if (hfp_send_cmgs(pvt->hfp, args.dest)
+ || msg_queue_push_data(pvt, AT_SMS_PROMPT, AT_CMGS, message)) {
+
+ ast_log(LOG_ERROR, "[%s] problem sending SMS message\n", pvt->id);
+ goto e_free_message;
+ }
+
+ ast_mutex_unlock(&pvt->lock);
return 0;
+e_free_message:
+ ast_free(message);
+e_unlock_pvt:
+ ast_mutex_unlock(&pvt->lock);
+e_return:
+ return -1;
}
/*
@@ -524,42 +769,48 @@
struct ast_channel *chn;
if (pipe(pvt->io_pipe) == -1) {
- ast_log(LOG_ERROR, "Failed to create io_pipe.\n");
- return NULL;
- }
-
- if (pvt->sco_socket != -1)
- close(pvt->sco_socket);
- pvt->sco_socket = -1;
- pvt->io_save_len = 0;
- pvt->sent_answer = 0;
- pvt->skip_frames = 0;
+ ast_log(LOG_ERROR, "[%s] failed to create io_pipe for audio data\n", pvt->id);
+ goto e_return;
+ }
+
+ pvt->answered = 0;
pvt->alignment_count = 0;
pvt->alignment_detection_triggered = 0;
if (pvt->adapter->alignment_detection)
pvt->do_alignment_detection = 1;
else
pvt->do_alignment_detection = 0;
- pvt->do_hangup = 1;
+
+ ast_smoother_reset(pvt->smoother, DEVICE_FRAME_SIZE);
+ ast_dsp_digitreset(pvt->dsp);
+
chn = ast_channel_alloc(1, state, cid_num, pvt->id, 0, 0, pvt->context, 0, "Mobile/%s-%04lx", pvt->id, ast_random() & 0xffff);
- if (chn) {
- chn->tech = &mbl_tech;
- chn->nativeformats = prefformat;
- chn->rawreadformat = prefformat;
- chn->rawwriteformat = prefformat;
- chn->writeformat = prefformat;
- chn->readformat = prefformat;
- chn->tech_pvt = pvt;
- ast_channel_set_fd(chn, 0, pvt->io_pipe[0]);
- if (state == AST_STATE_RING)
- chn->rings = 1;
- ast_string_field_set(chn, language, "en");
- pvt->owner = chn;
- return chn;
- }
-
+ if (!chn) {
+ goto e_close_pipe;
+ }
+
+ chn->tech = &mbl_tech;
+ chn->nativeformats = prefformat;
+ chn->rawreadformat = prefformat;
+ chn->rawwriteformat = prefformat;
+ chn->writeformat = prefformat;
+ chn->readformat = prefformat;
+ chn->tech_pvt = pvt;
+ ast_channel_set_fd(chn, 0, pvt->io_pipe[0]);
+
+ if (state == AST_STATE_RING)
+ chn->rings = 1;
+
+ ast_string_field_set(chn, language, "en");
+ pvt->owner = chn;
+
+ return chn;
+
+e_close_pipe:
+ close(pvt->io_pipe[0]);
+ close(pvt->io_pipe[1]);
+e_return:
return NULL;
-
}
static struct ast_channel *mbl_request(const char *type, int format, void *data, int *cause)
@@ -617,7 +868,9 @@
return NULL;
}
+ ast_mutex_lock(&pvt->lock);
chn = mbl_new(AST_STATE_DOWN, pvt, NULL);
+ ast_mutex_unlock(&pvt->lock);
if (!chn) {
ast_log(LOG_WARNING, "Unable to allocate channel structure.\n");
*cause = AST_CAUSE_REQUESTED_CHAN_UNAVAIL;
@@ -655,13 +908,31 @@
ast_debug(1, "Calling %s on %s\n", dest, ast->name);
+ ast_mutex_lock(&pvt->lock);
if (pvt->type == MBL_TYPE_PHONE) {
- ast_copy_string(pvt->dial_number, dest_num, sizeof(pvt->dial_number));
- pvt->state = MBL_STATE_DIAL;
- pvt->dial_timeout = (timeout == 0) ? 30 : timeout;
+ if (hfp_send_atd(pvt->hfp, dest_num)) {
+ ast_mutex_unlock(&pvt->lock);
+ ast_log(LOG_ERROR, "error sending ATD command on %s\n", pvt->id);
+ return -1;
+ }
+ msg_queue_push(pvt, AT_OK, AT_D);
} else {
- pvt->state = MBL_STATE_RING;
- }
+ if (hsp_send_ring(pvt->rfcomm_socket)) {
+ ast_log(LOG_ERROR, "[%s] error ringing device\n", pvt->id);
+ ast_mutex_unlock(&pvt->lock);
+ return -1;
+ }
+
+ if ((pvt->ring_sched_id = ast_sched_add(pvt->sched, 6000, headset_send_ring, pvt)) == -1) {
+ ast_log(LOG_ERROR, "[%s] error ringing device\n", pvt->id);
+ ast_mutex_unlock(&pvt->lock);
+ return -1;
+ }
+
+ pvt->outgoing = 1;
+ pvt->needring = 1;
+ }
+ ast_mutex_unlock(&pvt->lock);
return 0;
@@ -678,70 +949,1383 @@
}
pvt = ast->tech_pvt;
- ast_debug(1, "Hanging up device %s.\n", pvt->id);
+ ast_debug(1, "[%s] hanging up device\n", pvt->id);
ast_channel_set_fd(ast, 0, -1);
+
+ ast_mutex_lock(&pvt->lock);
close(pvt->io_pipe[0]);
close(pvt->io_pipe[1]);
- if (pvt->type == MBL_TYPE_HEADSET && pvt->sco_socket != -1) {
+ close(pvt->sco_socket);
+ pvt->sco_socket = -1;
+
+ if (pvt->needchup) {
+ hfp_send_chup(pvt->hfp);
+ msg_queue_push(pvt, AT_OK, AT_CHUP);
+ pvt->needchup = 0;
+ }
+
+ pvt->outgoing = 0;
+ pvt->incoming = 0;
+ pvt->owner = NULL;
+ ast->tech_pvt = NULL;
+
+ ast_mutex_unlock(&pvt->lock);
+
+ ast_setstate(ast, AST_STATE_DOWN);
+
+ return 0;
+
+}
+
+static int mbl_answer(struct ast_channel *ast)
+{
+
+ struct mbl_pvt *pvt;
+
+ pvt = ast->tech_pvt;
+
+ if (pvt->type == MBL_TYPE_HEADSET)
+ return 0;
+
+ ast_mutex_lock(&pvt->lock);
+ if (pvt->incoming) {
+ hfp_send_ata(pvt->hfp);
+ msg_queue_push(pvt, AT_OK, AT_A);
+ pvt->answered = 1;
+ }
+ ast_mutex_unlock(&pvt->lock);
+
+ return 0;
+
+}
+
+static int mbl_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+{
+ struct mbl_pvt *pvt = ast->tech_pvt;
+
+ if (pvt->type == MBL_TYPE_HEADSET)
+ return 0;
+
+ ast_mutex_lock(&pvt->lock);
+ if (hfp_send_dtmf(pvt->hfp, digit)) {
+ ast_mutex_unlock(&pvt->lock);
+ ast_debug(1, "[%s] error sending digit %c\n", pvt->id, digit);
+ return -1;
+ }
+ msg_queue_push(pvt, AT_OK, AT_VTS);
+ ast_mutex_unlock(&pvt->lock);
+
+ ast_debug(1, "[%s] dialed %c\n", pvt->id, digit);
+
+ return 0;
+}
+
+static struct ast_frame *mbl_read(struct ast_channel *ast)
+{
+
+ struct mbl_pvt *pvt = ast->tech_pvt;
+ int r;
+
+ ast_debug(3, "*** mbl_read()\n");
+
+ if (!pvt->owner) {
+ return &ast_null_frame;
+ }
+ memset(&pvt->fr, 0x00, sizeof(struct ast_frame));
+ pvt->fr.frametype = AST_FRAME_VOICE;
+ pvt->fr.subclass = DEVICE_FRAME_FORMAT;
+ pvt->fr.datalen = CHANNEL_FRAME_SIZE;
+ pvt->fr.samples = CHANNEL_FRAME_SIZE / 2;
+ pvt->fr.src = "Mobile";
+ pvt->fr.offset = AST_FRIENDLY_OFFSET;
+ pvt->fr.mallocd = 0;
+ pvt->fr.delivery.tv_sec = 0;
+ pvt->fr.delivery.tv_usec = 0;
+ pvt->fr.data.ptr = pvt->io_buf + AST_FRIENDLY_OFFSET;
+
+ if ((r = read(pvt->io_pipe[0], pvt->fr.data.ptr, CHANNEL_FRAME_SIZE)) != CHANNEL_FRAME_SIZE) {
+ if (r == -1) {
+ ast_log(LOG_ERROR, "read error %d\n", errno);
+ return &ast_null_frame;
+ } else {
+ pvt->fr.datalen = r;
+ pvt->fr.samples = r / 2;
+ }
+ }
+
+ return ast_dsp_process(ast, pvt->dsp, &pvt->fr);
+
+}
+
+static int mbl_write(struct ast_channel *ast, struct ast_frame *frame)
+{
+
+ struct mbl_pvt *pvt = ast->tech_pvt;
+ struct ast_frame *f;
+
+ ast_debug(3, "*** mbl_write\n");
+
+ if (frame->frametype != AST_FRAME_VOICE) {
+ return 0;
+ }
+
+ ast_smoother_feed(pvt->smoother, frame);
+
+ while ((f = ast_smoother_read(pvt->smoother))) {
+ sco_write(pvt->sco_socket, f->data.ptr, f->datalen);
+ ast_frfree(f);
+ }
+
+ return 0;
+
+}
+
+static int mbl_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
+{
+
+ struct mbl_pvt *pvt = oldchan->tech_pvt;
+
+ if (!pvt) {
+ ast_debug(1, "fixup failed, no pvt on oldchan\n");
+ return -1;
+ }
+
+ ast_mutex_lock(&pvt->lock);
+ if (pvt->owner == oldchan)
+ pvt->owner = newchan;
+ ast_mutex_unlock(&pvt->lock);
+
+ return 0;
+
+}
+
+static int mbl_devicestate(void *data)
+{
+
+ char *device;
+ int res = AST_DEVICE_INVALID;
+ struct mbl_pvt *pvt;
+
+ device = ast_strdupa(S_OR(data, ""));
+
+ ast_debug(1, "Checking device state for device %s\n", device);
+
+ AST_RWLIST_RDLOCK(&devices);
+ AST_RWLIST_TRAVERSE(&devices, pvt, entry) {
+ if (!strcmp(pvt->id, device))
+ break;
+ }
+ AST_RWLIST_UNLOCK(&devices);
+
+ if (!pvt)
+ return res;
+
+ ast_mutex_lock(&pvt->lock);
+ if (pvt->connected) {
+ if (pvt->owner)
+ res = AST_DEVICE_INUSE;
+ else
+ res = AST_DEVICE_NOT_INUSE;
+ }
+ ast_mutex_unlock(&pvt->lock);
+
+ return res;
+
+}
+
+/*
+
+ Callback helpers
+
+*/
+
+/*
+
+ do_alignment_detection()
+
+ This routine attempts to detect where we get misaligned sco audio data from the bluetooth adaptor.
+
+ Its enabled by alignmentdetect=yes under the adapter entry in mobile.conf
+
+ Some adapters suffer a problem where occasionally they will byte shift the audio stream one byte to the right.
+ The result is static or white noise on the inbound (from the adapter) leg of the call.
+ This is characterised by a sudden jump in magnitude of the value of the 16 bit samples.
+
+ Here we look at the first 4 48 byte frames. We average the absolute values of each sample in the frame,
+ then average the sum of the averages of frames 1, 2, and 3.
+ Frame zero is usually zero.
+ If the end result > 100, and it usually is if we have the problem, set a flag and compensate by shifting the bytes
+ for each subsequent frame during the call.
+
+ If the result is <= 100 then clear the flag so we dont come back in here...
+
+ This seems to work OK....
+
+*/
+
+static void do_alignment_detection(struct mbl_pvt *pvt, char *buf, int buflen)
+{
+
+ int i;
+ short a, *s;
+ char *p;
+
+ if (pvt->alignment_detection_triggered) {
+ for (i=buflen, p=buf+buflen-1; i>0; i--, p--)
+ *p = *(p-1);
+ *(p+1) = 0;
+ return;
+ }
+
+ if (pvt->alignment_count < 4) {
+ s = (short *)buf;
+ for (i=0, a=0; i<buflen/2; i++) {
+ a += *s++;
+ a /= i+1;
+ }
+ pvt->alignment_samples[pvt->alignment_count++] = a;
+ return;
+ }
+
+ ast_debug(1, "Alignment Detection result is [%-d %-d %-d %-d]\n", pvt->alignment_samples[0], pvt->alignment_samples[1], pvt->alignment_samples[2], pvt->alignment_samples[3]);
+
+ a = abs(pvt->alignment_samples[1]) + abs(pvt->alignment_samples[2]) + abs(pvt->alignment_samples[3]);
+ a /= 3;
+ if (a > 100) {
+ pvt->alignment_detection_triggered = 1;
+ ast_debug(1, "Alignment Detection Triggered.\n");
+ } else
+ pvt->do_alignment_detection = 0;
+
+}
+
+static int mbl_queue_control(struct mbl_pvt *pvt, enum ast_control_frame_type control)
+{
+ for (;;) {
+ if (pvt->owner) {
+ if (ast_channel_trylock(pvt->owner)) {
+ DEADLOCK_AVOIDANCE(&pvt->lock);
+ } else {
+ ast_queue_control(pvt->owner, control);
+ ast_channel_unlock(pvt->owner);
+ break;
+ }
+ } else
+ break;
+ }
+ return 0;
+}
+
+static int mbl_queue_hangup(struct mbl_pvt *pvt)
+{
+ for (;;) {
+ if (pvt->owner) {
+ if (ast_channel_trylock(pvt->owner)) {
+ DEADLOCK_AVOIDANCE(&pvt->lock);
+ } else {
+ ast_queue_hangup(pvt->owner);
+ ast_channel_unlock(pvt->owner);
+ break;
+ }
+ } else
+ break;
+ }
+ return 0;
+}
+
+static int mbl_ast_hangup(struct mbl_pvt *pvt)
+{
+ int res = 0;
+ for (;;) {
+ if (pvt->owner) {
+ if (ast_channel_trylock(pvt->owner)) {
+ DEADLOCK_AVOIDANCE(&pvt->lock);
+ } else {
+ res = ast_hangup(pvt->owner);
+ /* no need to unlock, ast_hangup() frees the
+ * channel */
+ break;
+ }
+ } else
+ break;
+ }
+ return res;
+}
+
+/*
+
+ rfcomm helpers
+
+*/
+
+static int rfcomm_connect(bdaddr_t src, bdaddr_t dst, int remote_channel)
+{
+
+ struct sockaddr_rc addr;
+ int s;
+
+ if ((s = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0) {
+ ast_debug(1, "socket() failed (%d).\n", errno);
+ return -1;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.rc_family = AF_BLUETOOTH;
+ bacpy(&addr.rc_bdaddr, &src);
+ addr.rc_channel = (uint8_t) 1;
+ if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ ast_debug(1, "bind() failed (%d).\n", errno);
+ close(s);
+ return -1;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.rc_family = AF_BLUETOOTH;
+ bacpy(&addr.rc_bdaddr, &dst);
+ addr.rc_channel = remote_channel;
+ if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ ast_debug(1, "connect() failed (%d).\n", errno);
+ close(s);
+ return -1;
+ }
+
+ return s;
+
+}
+
+/*!
+ * \brief Write to an rfcomm socket.
+ * \param rsock the socket to write to
+ * \param buf the null terminated buffer to write
+ *
+ * This function will write characters from buf. The buffer must be null
+ * terminated.
+ *
+ * \retval -1 error
+ * \retval 0 success
+ */
+static int rfcomm_write(int rsock, char *buf)
+{
+ return rfcomm_write_full(rsock, buf, strlen(buf));
+}
+
+
+/*!
+ * \brief Write to an rfcomm socket.
+ * \param rsock the socket to write to
+ * \param buf the buffer to write
+ * \param count the number of characters from the buffer to write
+ *
+ * This function will write count characters from buf. It will always write
+ * count chars unless it encounters an error.
+ *
+ * \retval -1 error
+ * \retval 0 success
+ */
+static int rfcomm_write_full(int rsock, char *buf, size_t count)
+{
+ char *p = buf;
+ ssize_t out_count;
+
+ ast_debug(1, "rfcomm_write() (%d) [%.*s]\n", rsock, (int) count, buf);
+ while (count > 0) {
+ if ((out_count = write(rsock, p, count)) == -1) {
+ ast_debug(1, "rfcomm_write() error [%d]\n", errno);
+ return -1;
+ }
+ count -= out_count;
+ p += out_count;
+ }
+
+ return 0;
+}
+
+/*!
+ * \brief Wait for activity on an rfcomm socket.
+ * \param rsock the socket to watch
+ * \param ms a pointer to an int containing a timeout in ms
+ * \return zero on timeout and the socket fd (non-zero) otherwise
+ * \retval 0 timeout
+ */
+static int rfcomm_wait(int rsock, int *ms)
+{
+ int exception, outfd;
+ outfd = ast_waitfor_n_fd(&rsock, 1, ms, &exception);
+ if (outfd < 0)
+ outfd = 0;
+
+ return outfd;
+}
+
+#ifdef RFCOMM_READ_DEBUG
+#define rfcomm_read_debug(c) __rfcomm_read_debug(c)
+static void __rfcomm_read_debug(char c)
+{
+ if (c == '\r')
+ ast_debug(2, "rfcomm_read: \\r\n");
+ else if (c == '\n')
+ ast_debug(2, "rfcomm_read: \\n\n");
+ else
+ ast_debug(2, "rfcomm_read: %c\n", c);
+}
+#else
+#define rfcomm_read_debug(c)
+#endif
+
+/*!
+ * \brief Append the given character to the given buffer and increase the
+ * in_count.
+ */
+static void inline rfcomm_append_buf(char **buf, size_t count, size_t *in_count, char c)
+{
+ if (*in_count < count) {
+ (*in_count)++;
+ *(*buf)++ = c;
+ }
+}
+
+/*!
+ * \brief Read a character from the given stream and check if it matches what
+ * we expected.
+ */
+static int rfcomm_read_and_expect_char(int rsock, char *result, char expected)
+{
+ int res;
+ char c;
+
+ if (!result)
+ result = &c;
+
+ if ((res = read(rsock, result, 1)) < 1) {
+ return res;
+ }
+ rfcomm_read_debug(*result);
+
+ if (*result != expected) {
+ return -2;
+ }
+
+ return 1;
+}
+
+/*!
+ * \brief Read a character from the given stream and append it to the given
+ * buffer if it matches the expected character.
+ */
+static int rfcomm_read_and_append_char(int rsock, char **buf, size_t count, size_t *in_count, char *result, char expected)
+{
+ int res;
+ char c;
+
+ if (!result)
+ result = &c;
+
+ if ((res = rfcomm_read_and_expect_char(rsock, result, expected)) < 1) {
+ return res;
+ }
+
+ rfcomm_append_buf(buf, count, in_count, *result);
+ return 1;
+}
+
+/*!
+ * \brief Read until '\r\n'.
+ * This function consumes the '\r\n' but does not add it to buf.
+ */
+static int rfcomm_read_until_crlf(int rsock, char **buf, size_t count, size_t *in_count)
+{
+ int res;
+ char c;
+
+ while ((res = read(rsock, &c, 1)) == 1) {
+ rfcomm_read_debug(c);
+ if (c == '\r') {
+ if ((res = rfcomm_read_and_expect_char(rsock, &c, '\n')) == 1) {
+ break;
+ } else if (res == -2) {
+ rfcomm_append_buf(buf, count, in_count, '\r');
+ } else {
+ rfcomm_append_buf(buf, count, in_count, '\r');
+ break;
+ }
+ }
+
+ rfcomm_append_buf(buf, count, in_count, c);
+ }
+ return res;
+}
+
+/*!
+ * \brief Read the remainder of an AT SMS prompt.
+ * \note the entire parsed string is '\r\n> '
+ *
+ * By the time this function is executed, only a ' ' is left to read.
+ */
+static int rfcomm_read_sms_prompt(int rsock, char **buf, size_t count, size_t *in_count)
+{
+ int res;
+ if ((res = rfcomm_read_and_append_char(rsock, buf, count, in_count, NULL, ' ')) < 1)
+ goto e_return;
+
+ return 1;
+
+e_return:
+ ast_log(LOG_ERROR, "error parsing SMS prompt on rfcomm socket\n");
+ return res;
+}
+
+/*!
+ * \brief Read and AT result code.
+ * \note the entire parsed string is '\r\n<result code>\r\n'
+ */
+static int rfcomm_read_result(int rsock, char **buf, size_t count, size_t *in_count)
+{
+ int res;
+ char c;
+
+ if ((res = rfcomm_read_and_expect_char(rsock, &c, '\n')) < 1) {
+ goto e_return;
+ }
+
+ if ((res = rfcomm_read_and_append_char(rsock, buf, count, in_count, &c, '>')) == 1) {
+ return rfcomm_read_sms_prompt(rsock, buf, count, in_count);
+ } else if (res != -2) {
+ goto e_return;
+ }
+
+ rfcomm_append_buf(buf, count, in_count, c);
+ res = rfcomm_read_until_crlf(rsock, buf, count, in_count);
+
+ if (res != 1)
+ return res;
+
+ /* check for CMGR, which contains an embedded \r\n */
+ if (*in_count >= 5 && !strncmp(*buf - *in_count, "+CMGR", 5)) {
+ rfcomm_append_buf(buf, count, in_count, '\r');
+ rfcomm_append_buf(buf, count, in_count, '\n');
+ return rfcomm_read_until_crlf(rsock, buf, count, in_count);
+ }
+
+ return 1;
+
+e_return:
+ ast_log(LOG_ERROR, "error parsing AT result on rfcomm socket");
+ return res;
+}
+
+/*!
+ * \brief Read the remainder of an AT command.
+ * \note the entire parsed string is '<at command>\r'
+ */
+static int rfcomm_read_command(int rsock, char **buf, size_t count, size_t *in_count)
+{
+ int res;
+ char c;
+
+ while ((res = read(rsock, &c, 1)) == 1) {
+ rfcomm_read_debug(c);
+ /* stop when we get to '\r' */
+ if (c == '\r')
+ break;
+
+ rfcomm_append_buf(buf, count, in_count, c);
+ }
+ return res;
+}
+
+/*!
+ * \brief Read one Hayes AT message from an rfcomm socket.
+ * \param rsock the rfcomm socket to read from
+ * \param buf the buffer to store the result in
+ * \param count the size of the buffer or the maximum number of characters to read
+ *
+ * Here we need to read complete Hayes AT messages. The AT message formats we
+ * support are listed below.
+ *
+ * \verbatim
+ * \r\n<result code>\r\n
+ * <at command>\r
+ * \r\n>
+ * \endverbatim
+ *
+ * These formats correspond to AT result codes, AT commands, and the AT SMS
+ * prompt respectively. When messages are read the leading and trailing '\r'
+ * and '\n' characters are discarded. If the given buffer is not large enough
+ * to hold the response, what does not fit in the buffer will be dropped.
+ *
+ * \note The rfcomm connection to the device is asynchronous, so there is no
+ * guarantee that responses will be returned in a single read() call. We handle
+ * this by blocking until we can read an entire response.
+ *
+ * \retval 0 end of file
+ * \retval -1 read error
+ * \retval -2 parse error
+ * \retval other the number of characters added to buf
+ */
+static ssize_t rfcomm_read(int rsock, char *buf, size_t count)
+{
+ ssize_t res;
+ size_t in_count = 0;
+ char c;
+
+ if ((res = rfcomm_read_and_expect_char(rsock, &c, '\r')) == 1) {
+ res = rfcomm_read_result(rsock, &buf, count, &in_count);
+ } else if (res == -2) {
+ rfcomm_append_buf(&buf, count, &in_count, c);
+ res = rfcomm_read_command(rsock, &buf, count, &in_count);
+ }
+
+ if (res < 1)
+ return res;
+ else
+ return in_count;
+}
+
+/*
+
+ sco helpers and callbacks
+
+*/
+
+static int sco_connect(bdaddr_t src, bdaddr_t dst)
+{
+
+ struct sockaddr_sco addr;
+ int s;
+
+ if ((s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO)) < 0) {
+ ast_debug(1, "socket() failed (%d).\n", errno);
+ return -1;
+ }
+
+/* XXX this does not work with the do_sco_listen() thread (which also bind()s
+ * to this address). Also I am not sure if it is necessary. */
+#if 0
+ memset(&addr, 0, sizeof(addr));
+ addr.sco_family = AF_BLUETOOTH;
+ bacpy(&addr.sco_bdaddr, &src);
+ if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ ast_debug(1, "bind() failed (%d).\n", errno);
+ close(s);
+ return -1;
+ }
+#endif
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sco_family = AF_BLUETOOTH;
+ bacpy(&addr.sco_bdaddr, &dst);
+
+ if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ ast_debug(1, "sco connect() failed (%d).\n", errno);
+ close(s);
+ return -1;
+ }
+
+ return s;
+
+}
+
+static int sco_write(int s, char *buf, int len)
+{
+
+ int r;
+
+ if (s == -1) {
+ ast_debug(3, "sco_write() not ready\n");
+ return 0;
+ }
+
+ ast_debug(3, "sco_write()\n");
+
+ r = write(s, buf, len);
+ if (r == -1) {
+ ast_debug(3, "sco write error %d\n", errno);
+ return 0;
+ }
+
+ return 1;
+
+}
+
+/*!
+ * \brief Read data from the given sco connection.
+ * This function is an ast_io callback function that will read data from the
+ * given sco socket and write it to the corrisponding pvt io_pipe.
+ */
+static int sco_read(int *id, int fd, short events, void *data)
+{
+ struct mbl_pvt *pvt = (struct mbl_pvt *) data;
+ int res;
+ char buf[DEVICE_FRAME_SIZE];
+
+ ast_debug(3, "sco_read()\n");
+
+ if ((res = read(fd, buf, DEVICE_FRAME_SIZE)) <= 0) {
+ ast_debug(3, "error reading sco audio data\n");
+ close(fd);
+ /* don't set pvt->sco_sock = -1 here, there may already be a
+ * new pvt->sco_sock */
+ return 0;
+ }
+
+ if (pvt->do_alignment_detection)
+ do_alignment_detection(pvt, buf, res);
+
+ if (pvt->owner && pvt->owner->_state == AST_STATE_UP) {
+ if (write(pvt->io_pipe[1], buf, res) == -1) {
+ ast_debug(1, "[%s] failed to queue sco data: %s", pvt->id, strerror_r(errno, buf, sizeof(buf)));
+ }
+ }
+
+ return 1;
+}
+
+/*!
+ * \brief Accept SCO connections.
+ * This function is an ast_io callback function used to accept incoming sco
+ * audio connections.
+ */
+static int sco_accept(int *id, int fd, short events, void *data)
+{
+ struct adapter_pvt *adapter = (struct adapter_pvt *) data;
+ struct sockaddr_sco addr;
+ socklen_t addrlen;
+ struct mbl_pvt *pvt;
+ socklen_t len;
+ char saddr[18];
+ struct sco_options so;
+ int sock;
+
+ addrlen = sizeof(struct sockaddr_sco);
+ if ((sock = accept(fd, (struct sockaddr *)&addr, &addrlen)) == -1) {
+ ast_log(LOG_ERROR, "error accepting audio connection on adapter %s\n", adapter->id);
+ return 0;
+ }
+
+ len = sizeof(so);
+ getsockopt(sock, SOL_SCO, SCO_OPTIONS, &so, &len);
+
+ ba2str(&addr.sco_bdaddr, saddr);
+ ast_debug(1, "Incoming Audio Connection from device %s MTU is %d\n", saddr, so.mtu);
+
+ /* figure out which device this sco connection belongs to */
+ pvt = NULL;
+ AST_RWLIST_RDLOCK(&devices);
[... 3453 lines stripped ...]
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