Ringback (sponsored by Front Logic)

This addition lets you set artifical ringback on a channel
that is waiting for an originated call to be answered.

the syntax is 

<action application="set" data="ringback=[data]"/>

where data is either the full path to an audio file
or a teletone generation script..


syntax of teletone scripts

LEGEND:

0-9,a-d,*,# (standard dtmf tones)

variables: c,r,d,v,>,<,+,w,l,L,%

c (channels)        - Sets the number of channels.
r (rate)            - Sets the sample rate.
d (duration)        - Sets the default tone duration.
v (volume)          - Sets the default volume.
> (decrease vol)    - factor to decrease volume by per frame (0 for even decrease across duration).
< (increase vol)    - factor to increase volume by per frame (0 for even increase across duration).
+ (step)            - factor to step by used by < and >.
w (wait)            - default silence after each tone.
l (loops)           - number of times to repeat each tone in the script.
L (LOOPS)           - number of times to repeat the the whole script.
% (manual tone)     - a generic tone specified by a duration, a wait and a list of frequencies.

standard tones can have custom duration per use with the () modifier
7(1000, 500) to generate DTMF 7 for 1 second then pause .5 seconds

EXAMPLES

UK Ring Tone [400+450 hz on for 400ms off for 200ms then 400+450 hz on for 400ms off for 2200ms]
%(400,200,400,450);%(400,2200,400,450)

US Ring Tone [440+480 hz on for 2000ms off for 4000ms]
%(2000,4000,440,480)

ATT BONG [volume level 4000, even decay, step by 2, # key for 60ms with no wait, volume level 2000, 350+440hz {us dialtone} for 940ms
v=4000;>=0;+=2;#(60,0);v=2000;%(940,0,350,440)

SIT Tone 913.8 hz for 274 ms with no wait, 1370.6 hz for 274 ms with no wait, 1776.7 hz for 380ms with no wait
%(274,0,913.8);%(274,0,1370.6);%(380,0,1776.7)

ATTN TONE (phone's off the hook!) 1400+2060+2450+2600 hz for 100ms with 100ms wait
%(100,100,1400,2060,2450,2600)



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3408 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2006-11-19 01:05:06 +00:00
parent 0984933c36
commit d7baa16132
12 changed files with 273 additions and 50 deletions

View File

@ -8,6 +8,12 @@
<!--Most channels to allow at once -->
<param name="max-sessions" value="1000"/>
</settings>
<!--Any variables defined here will be available in every channel, in the dialplan etc -->
<variables>
<variable name="uk-ring" value="%(400,200,400,450);%(400,2200,400,450)"/>
<variable name="us-ring" value="%(2000, 4000, 440.0, 480.0)"/>
<variable name="bong-ring" value="v=4000;>=0;+=2;#(60,0);v=2000;%(940,0,350,440)"/>
</variables>
</configuration>
<configuration name="modules.conf" description="Modules">
@ -429,6 +435,9 @@
<extension name="testmusic">
<condition field="destination_number" expression="^1234$">
<!-- Request a certain tone/file to be played while you wait for the call to be answered-->
<action application="set" data="ringback=${us-ring}"/>
<!--<action application="set" data="ringback=/home/ring.wav"/>-->
<action application="bridge" data="sofia/test/1234@66.250.68.194"/>
</condition>
</extension>

View File

@ -84,11 +84,14 @@ int teletone_init_session(teletone_generation_session_t *ts, int buflen, tone_ha
ts->user_data = user_data;
ts->volume = 1500;
ts->decay_step = 0;
if ((ts->buffer = calloc(buflen, sizeof(teletone_audio_t))) == 0) {
return -1;
if (buflen) {
if ((ts->buffer = calloc(buflen, sizeof(teletone_audio_t))) == 0) {
return -1;
}
ts->datalen = buflen;
} else {
ts->dynamic = 1024;
}
ts->datalen = buflen;
/* Add Standard DTMF Tones */
teletone_set_tone(ts, '1', 697.0, 1209.0, 0.0);
teletone_set_tone(ts, '2', 697.0, 1336.0, 0.0);
@ -120,8 +123,21 @@ int teletone_destroy_session(teletone_generation_session_t *ts)
return 0;
}
/** Generate a specified number of samples containing the three specified
* frequencies (in hertz) and dump to the file descriptor audio_fd. */
static int ensure_buffer(teletone_generation_session_t *ts, int need)
{
need += ts->samples;
need *= sizeof(teletone_audio_t);
need *= ts->channels;
if (need > ts->datalen) {
ts->datalen = need + ts->dynamic;
if (!(ts->buffer = realloc(ts->buffer, ts->datalen))) {
return -1;
}
}
return 0;
}
int teletone_mux_tones(teletone_generation_session_t *ts, teletone_tone_map_t *map)
{
@ -159,6 +175,11 @@ int teletone_mux_tones(teletone_generation_session_t *ts, teletone_tone_map_t *m
duration *= ts->channels;
}
if (ts->dynamic) {
if (ensure_buffer(ts, duration)) {
return -1;
}
}
for (ts->samples = 0; ts->samples < ts->datalen && ts->samples < duration; ts->samples++) {
if (ts->decay_step && !(ts->samples % ts->decay_step) && ts->volume > 0 && ts->samples > decay) {
ts->volume += ts->decay_direction;
@ -179,6 +200,11 @@ int teletone_mux_tones(teletone_generation_session_t *ts, teletone_tone_map_t *m
}
}
if (ts->dynamic) {
if (ensure_buffer(ts, wait)) {
return -1;
}
}
for (c = 0; c < ts->channels; c++) {
for (i = 0; i < wait && ts->samples < ts->datalen; i++) {
ts->buffer[ts->samples++] = 0;
@ -211,19 +237,37 @@ int teletone_mux_tones(teletone_generation_session_t *ts, teletone_tone_map_t *m
return ts->samples;
}
/* don't ask */
static char *my_strdup (const char *s)
{
size_t len = strlen (s) + 1;
void *new = malloc (len);
if (new == NULL) {
return NULL;
}
return (char *) memcpy (new, s, len);
}
int teletone_run(teletone_generation_session_t *ts, char *cmd)
{
char *data, *cur, *end;
char *data = NULL, *cur = NULL, *end = NULL;
int var = 0, LOOPING = 0;
if (!cmd) {
return -1;
}
do {
data = strdup(cmd);
if (!(data = my_strdup(cmd))) {
return -1;
}
cur = data;
while (*cur) {
var = 0;
if (*cur == ' ' || *cur == '\r' || *cur == '\n') {
cur++;
continue;

View File

@ -56,7 +56,7 @@ extern "C" {
This module is responsible for tone generation specifics
*/
typedef short teletone_audio_t;
typedef int16_t teletone_audio_t;
struct teletone_generation_session;
typedef int (*tone_handler)(struct teletone_generation_session *ts, teletone_tone_map_t *map);
@ -101,6 +101,7 @@ struct teletone_generation_session {
/*! In-Use size of the buffer */
int samples;
/*! Callback function called during generation */
int dynamic;
tone_handler handler;
};

View File

@ -183,6 +183,7 @@ typedef apr_file_t switch_file_t;
*/
DoxyDefine(apr_status_t switch_file_open(switch_file_t **newf, const char *fname, apr_int32_t flag, switch_fileperms_t perm, switch_pool_t *pool);)
#define switch_file_open apr_file_open
#define switch_file_seek apr_file_seek
/**
* Close the specified file.

View File

@ -417,6 +417,13 @@ SWITCH_DECLARE(char *) switch_core_session_get_uuid(switch_core_session_t *sessi
*/
SWITCH_DECLARE(switch_core_session_t *) switch_core_session_locate(char *uuid_str);
/*!
\brief Retrieve a global variable from the core
\param varname the name of the variable
\return the value of the desired variable
*/
SWITCH_DECLARE(char *) switch_core_get_variable(char *varname);
/*!
\brief Hangup All Sessions
\param cause the hangup cause to apply to the hungup channels

View File

@ -151,7 +151,7 @@ static switch_caller_extension_t *directory_dialplan_hunt(switch_core_session_t
if (extension) {
switch_channel_set_state(channel, CS_EXECUTE);
} else {
switch_channel_hangup(channel, SWITCH_CAUSE_MESSAGE_TYPE_NONEXIST);
switch_channel_hangup(channel, SWITCH_CAUSE_NO_ROUTE_DESTINATION);
}
return extension;

View File

@ -296,7 +296,7 @@ static switch_caller_extension_t *dialplan_hunt(switch_core_session_t *session)
if (!(xcontext = switch_xml_find_child(cfg, "context", "name", context))) {
if (!(xcontext = switch_xml_find_child(cfg, "context", "name", "global"))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "context %s not found\n", context);
switch_channel_hangup(channel, SWITCH_CAUSE_MESSAGE_TYPE_NONEXIST);
switch_channel_hangup(channel, SWITCH_CAUSE_NO_ROUTE_DESTINATION);
switch_xml_free(xml);
return NULL;
}
@ -325,7 +325,7 @@ static switch_caller_extension_t *dialplan_hunt(switch_core_session_t *session)
if (extension) {
switch_channel_set_state(channel, CS_EXECUTE);
} else {
switch_channel_hangup(channel, SWITCH_CAUSE_MESSAGE_TYPE_NONEXIST);
switch_channel_hangup(channel, SWITCH_CAUSE_NO_ROUTE_DESTINATION);
}
return extension;

View File

@ -75,7 +75,7 @@ static switch_status_t native_file_file_open(switch_file_handle_t *handle, char
handle->channels = 1;
handle->format = 0;
handle->sections = 0;
handle->seekable = 0;
handle->seekable = 1;
handle->speed = 0;
handle->private_info = context;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Opening File [%s] %dhz\n", path, handle->samplerate);
@ -98,8 +98,10 @@ static switch_status_t native_file_file_close(switch_file_handle_t *handle)
static switch_status_t native_file_file_seek(switch_file_handle_t *handle, unsigned int *cur_sample, int64_t samples, int whence)
{
//native_file_context *context = handle->private_info;
native_file_context *context = handle->private_info;
switch_file_seek(context->fd, whence, &samples);
return SWITCH_STATUS_FALSE;
}

View File

@ -75,7 +75,6 @@ static int teletone_handler(teletone_generation_session_t *ts, teletone_tone_map
/*********************************************************************************/
static JSBool teletone_construct(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
int32 memory = 65535;
JSObject *session_obj;
struct teletone_obj *tto = NULL;
struct js_session *jss = NULL;
@ -101,12 +100,6 @@ static JSBool teletone_construct(JSContext *cx, JSObject *obj, uintN argc, jsval
timer_name = JS_GetStringBytes(JS_ValueToString(cx, argv[1]));
}
if (argc > 2) {
if (!JS_ValueToInt32(cx, argv[2], &memory)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Cannot Convert to INT\n");
return JS_FALSE;
}
}
switch_core_new_memory_pool(&pool);
if (!(tto = switch_core_alloc(pool, sizeof(*tto)))) {
@ -149,7 +142,7 @@ static JSBool teletone_construct(JSContext *cx, JSObject *obj, uintN argc, jsval
tto->obj = obj;
tto->cx = cx;
tto->session = jss->session;
teletone_init_session(&tto->ts, memory, teletone_handler, tto);
teletone_init_session(&tto->ts, 0, teletone_handler, tto);
JS_SetPrivate(cx, obj, tto);
return JS_TRUE;

View File

@ -344,7 +344,7 @@ SWITCH_DECLARE(void) switch_channel_presence(switch_channel_t *channel, char *rp
SWITCH_DECLARE(char *) switch_channel_get_variable(switch_channel_t *channel, char *varname)
{
char *v;
char *v = NULL;
assert(channel != NULL);
if (!(v=switch_core_hash_find(channel->variables, varname))) {
@ -352,6 +352,7 @@ SWITCH_DECLARE(char *) switch_channel_get_variable(switch_channel_t *channel, ch
if (!strcmp(varname, "base_dir")) {
return SWITCH_GLOBAL_dirs.base_dir;
}
v = switch_core_get_variable(varname);
}
}
@ -1113,7 +1114,7 @@ SWITCH_DECLARE(char *) switch_channel_expand_variables(switch_channel_t *channel
{
char *p, *c;
char *data, *indup;
size_t sp = 0, len = 0, olen = 0, vtype = 0, br = 0, vnamepos, vvalpos, cpos, ppos, block = 128;
size_t sp = 0, len = 0, olen = 0, vtype = 0, br = 0, cpos, block = 128;
char *sub_val = NULL, *func_val = NULL;
if (!strchr(in, '$') && !strchr(in, '&')) {
@ -1195,36 +1196,35 @@ SWITCH_DECLARE(char *) switch_channel_expand_variables(switch_channel_t *channel
return in;
}
}
nlen = strlen(sub_val);
nlen = sub_val ? strlen(sub_val) : 0;
if (len + nlen >= olen) {
olen += block;
olen = (olen + len + nlen + block);
cpos = c - data;
ppos = p - data;
vnamepos = vname - data;
vvalpos = vval - data;
data = realloc(data, olen);
c = data + cpos;
p = data + ppos;
vname = data + vnamepos;
vname = data + vvalpos;
memset(c, 0, olen - cpos);
}
len += nlen;
strcat(c, sub_val);
c += nlen;
if (func_val) {
free(func_val);
func_val = NULL;
if (nlen) {
len += nlen;
strcat(c, sub_val);
c += nlen;
}
switch_safe_free(func_val);
}
if (sp) {
*c++ = ' ';
sp = 0;
len++;
}
*c++ = *p;
len++;
if (*p == '$' || *p == '&') {
p--;
} else {
*c++ = *p;
len++;
}
}
}
free(indup);

View File

@ -120,6 +120,7 @@ struct switch_core_runtime {
uint32_t session_id;
apr_pool_t *memory_pool;
switch_hash_t *session_table;
switch_hash_t *global_vars;
switch_mutex_t *session_table_mutex;
#ifdef CRASH_PROT
switch_hash_t *stack_table;
@ -558,6 +559,11 @@ SWITCH_DECLARE(void) switch_core_session_rwunlock(switch_core_session_t *session
}
SWITCH_DECLARE(char *) switch_core_get_variable(char *varname)
{
return (char *) switch_core_hash_find(runtime.global_vars, varname);
}
SWITCH_DECLARE(switch_core_session_t *) switch_core_session_locate(char *uuid_str)
{
switch_core_session_t *session;
@ -3849,6 +3855,8 @@ SWITCH_DECLARE(switch_status_t) switch_core_init(char *console, const char **err
return SWITCH_STATUS_MEMERR;
}
switch_core_hash_init(&runtime.global_vars, runtime.memory_pool);
if (switch_xml_init(runtime.memory_pool, err) != SWITCH_STATUS_SUCCESS) {
apr_terminate();
return SWITCH_STATUS_MEMERR;
@ -3868,6 +3876,18 @@ SWITCH_DECLARE(switch_status_t) switch_core_init(char *console, const char **err
}
}
}
if ((settings = switch_xml_child(cfg, "variables"))) {
for (param = switch_xml_child(settings, "variable"); param; param = param->next) {
char *var = (char *) switch_xml_attr_soft(param, "name");
char *val = (char *) switch_xml_attr_soft(param, "value");
char *varr = NULL, *vall = NULL;
varr = switch_core_strdup(runtime.memory_pool, var);
vall = switch_core_strdup(runtime.memory_pool, val);
switch_core_hash_insert(runtime.global_vars, varr, vall);
}
}
switch_xml_free(xml);
}

View File

@ -32,6 +32,7 @@
*/
#include <switch.h>
#include <switch_ivr.h>
#include <libteletone.h>
static const switch_state_handler_table_t audio_bridge_peer_state_handlers;
@ -2198,6 +2199,31 @@ static uint8_t check_channel_status(switch_channel_t **peer_channels,
}
struct ringback {
switch_buffer_t *audio_buffer;
switch_buffer_t *loop_buffer;
teletone_generation_session_t ts;
switch_file_handle_t fhb;
switch_file_handle_t *fh;
uint8_t asis;
};
typedef struct ringback ringback_t;
static int teletone_handler(teletone_generation_session_t *ts, teletone_tone_map_t *map)
{
ringback_t *tto = ts->user_data;
int wrote;
if (!tto) {
return -1;
}
wrote = teletone_mux_tones(ts, map);
switch_buffer_write(tto->audio_buffer, ts->buffer, wrote * 2);
return 0;
}
#define MAX_PEERS 256
SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *session,
switch_core_session_t **bleg,
@ -2220,6 +2246,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
switch_caller_profile_t *caller_profiles[MAX_PEERS] = {0}, *caller_caller_profile;
char *chan_type = NULL, *chan_data;
switch_channel_t *peer_channel = NULL, *peer_channels[MAX_PEERS] = {0};
ringback_t ringback = {0};
time_t start;
switch_frame_t *read_frame = NULL;
switch_memory_pool_t *pool = NULL;
@ -2231,6 +2258,9 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
char *file = NULL, *key = NULL, *odata, *var;
switch_call_cause_t reason = SWITCH_CAUSE_UNALLOCATED;
uint8_t to = 0;
char *ringback_data = NULL;
switch_codec_t *read_codec = NULL;
write_frame.data = fdata;
*bleg = NULL;
@ -2261,6 +2291,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
caller_channel = switch_core_session_get_channel(session);
assert(caller_channel != NULL);
ringback_data = switch_channel_get_variable(caller_channel, "ringback");
switch_channel_set_variable(caller_channel, "originate_disposition", "failure");
if ((var = switch_channel_get_variable(caller_channel, "group_confirm_key"))) {
@ -2449,12 +2480,15 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
}
endfor1:
if (session && !switch_channel_test_flag(caller_channel, CF_NOMEDIA)) {
switch_codec_t *read_codec = NULL;
if (ringback_data && !switch_channel_test_flag(caller_channel, CF_ANSWERED) && !switch_channel_test_flag(caller_channel, CF_EARLY_MEDIA)) {
switch_channel_pre_answer(caller_channel);
}
if (session && !switch_channel_test_flag(caller_channel, CF_NOMEDIA)) {
read_codec = switch_core_session_get_read_codec(session);
assert(read_codec != NULL);
if (!(pass = (uint8_t)switch_test_flag(read_codec, SWITCH_CODEC_FLAG_PASSTHROUGH))) {
if (switch_core_codec_init(&write_codec,
"L16",
@ -2465,6 +2499,8 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE,
NULL,
pool) == SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Raw Codec Activation Success L16@%uhz 1 channel %dms\n",
read_codec->implementation->samples_per_second,
read_codec->implementation->microseconds_per_frame / 1000);
@ -2472,9 +2508,60 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
write_frame.datalen = read_codec->implementation->bytes_per_frame;
write_frame.samples = write_frame.datalen / 2;
memset(write_frame.data, 255, write_frame.datalen);
if (ringback_data) {
switch_buffer_create_dynamic(&ringback.audio_buffer, 512, 1024, 0);
switch_buffer_create_dynamic(&ringback.loop_buffer, 512, 1024, 0);
char *tmp_data = NULL;
if (*ringback_data == '/') {
char *ext;
if ((ext = strrchr(ringback_data, '.'))) {
switch_core_session_set_read_codec(session, &write_codec);
ext++;
} else {
ringback.asis++;
write_frame.codec = read_codec;
ext = read_codec->implementation->iananame;
tmp_data = switch_mprintf("%s.%s", ringback_data, ext);
ringback_data = tmp_data;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Play Ringback File [%s]\n", ringback_data);
ringback.fhb.channels = read_codec->implementation->number_of_channels;
ringback.fhb.samplerate = read_codec->implementation->samples_per_second;
if (switch_core_file_open(&ringback.fhb,
ringback_data,
SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT,
switch_core_session_get_pool(session)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Playing File\n");
switch_safe_free(tmp_data);
goto notready;
}
ringback.fh = &ringback.fhb;
} else {
teletone_init_session(&ringback.ts, 0, teletone_handler, &ringback);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Play Ringback Tone [%s]\n", ringback_data);
//ringback.ts.debug = 1;
//ringback.ts.debug_stream = switch_core_get_console();
if (teletone_run(&ringback.ts, ringback_data)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Playing Tone\n");
teletone_destroy_session(&ringback.ts);
switch_buffer_destroy(&ringback.audio_buffer);
switch_buffer_destroy(&ringback.loop_buffer);
ringback_data = NULL;
}
}
switch_safe_free(tmp_data);
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Codec Error!");
switch_channel_hangup(caller_channel, SWITCH_CAUSE_NORMAL_TEMPORARY_FAILURE);
read_codec = NULL;
}
}
}
@ -2505,10 +2592,56 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
if (!SWITCH_READ_ACCEPTABLE(status)) {
break;
}
if (read_frame && !pass) {
if (read_frame && !pass && !switch_test_flag(read_frame, SFF_CNG) && read_frame->datalen > 1) {
if (ringback.fh) {
uint8_t abuf[1024];
switch_size_t mlen, olen;
unsigned int pos = 0;
if (ringback.asis) {
mlen = read_frame->datalen;
} else {
mlen = read_frame->datalen / 2;
}
olen = mlen;
switch_core_file_read(ringback.fh, abuf, &olen);
if (olen == 0) {
olen = mlen;
ringback.fh->speed = 0;
switch_core_file_seek(ringback.fh, &pos, 0, SEEK_SET);
switch_core_file_read(ringback.fh, abuf, &olen);
if (olen == 0) {
break;
}
}
write_frame.data = abuf;
write_frame.datalen = (uint32_t) ringback.asis ? olen : olen * 2;
if (switch_core_session_write_frame(session, &write_frame, 1000, 0) != SWITCH_STATUS_SUCCESS) {
break;
}
} else if (ringback.audio_buffer) {
if ((write_frame.datalen = (uint32_t)switch_buffer_read(ringback.audio_buffer,
write_frame.data,
write_frame.codec->implementation->bytes_per_frame)) <= 0) {
switch_buffer_t *tmp;
tmp = ringback.audio_buffer;
ringback.audio_buffer = ringback.loop_buffer;
ringback.loop_buffer = tmp;
if ((write_frame.datalen = (uint32_t)switch_buffer_read(ringback.audio_buffer,
write_frame.data,
write_frame.codec->implementation->bytes_per_frame)) <= 0) {
break;
}
}
}
if (switch_core_session_write_frame(session, &write_frame, 1000, 0) != SWITCH_STATUS_SUCCESS) {
break;
}
if (ringback.loop_buffer) {
switch_buffer_write(ringback.loop_buffer, write_frame.data, write_frame.datalen);
}
}
} else {
@ -2617,6 +2750,19 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
switch_core_codec_destroy(&write_codec);
}
if (ringback.fh) {
switch_core_file_close(ringback.fh);
ringback.fh = NULL;
if (read_codec && !ringback.asis) {
switch_core_session_set_read_codec(session, read_codec);
switch_core_session_reset(session);
}
} else if (ringback.audio_buffer) {
teletone_destroy_session(&ringback.ts);
switch_buffer_destroy(&ringback.audio_buffer);
switch_buffer_destroy(&ringback.loop_buffer);
}
for (i = 0; i < and_argc; i++) {
if (!peer_channels[i]) {
continue;