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switch_ivr_async.c
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switch_ivr_async.c
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2015, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
* Bret McDanel <bret AT 0xdecafbad dot com>
* Luke Dashjr <luke@openmethods.com> (OpenMethods, LLC)
* Christopher M. Rienzo <chris@rienzo.com>
*
* switch_ivr_async.c -- IVR Library (async operations)
*
*/
#include <switch.h>
#include "private/switch_core_pvt.h"
#include <speex/speex_preprocess.h>
#include <speex/speex_echo.h>
struct switch_ivr_dmachine_binding {
char *digits;
char *repl;
int first_match;
char *substituted;
int32_t key;
uint8_t rmatch;
switch_ivr_dmachine_callback_t callback;
switch_byte_t is_regex;
switch_byte_t is_priority;
void *user_data;
struct switch_ivr_dmachine_binding *next;
};
typedef struct switch_ivr_dmachine_binding switch_ivr_dmachine_binding_t;
typedef struct {
switch_ivr_dmachine_binding_t *binding_list;
switch_ivr_dmachine_binding_t *tail;
char *name;
char *terminators;
} dm_binding_head_t;
struct switch_ivr_dmachine {
switch_memory_pool_t *pool;
switch_byte_t my_pool;
char *name;
uint32_t digit_timeout_ms;
uint32_t input_timeout_ms;
switch_hash_t *binding_hash;
switch_ivr_dmachine_match_t match;
switch_digit_action_target_t target;
char digits[DMACHINE_MAX_DIGIT_LEN];
char last_matching_digits[DMACHINE_MAX_DIGIT_LEN];
char last_failed_digits[DMACHINE_MAX_DIGIT_LEN];
uint32_t cur_digit_len;
uint32_t max_digit_len;
switch_time_t last_digit_time;
switch_byte_t is_match;
switch_ivr_dmachine_callback_t match_callback;
switch_ivr_dmachine_callback_t nonmatch_callback;
dm_binding_head_t *realm;
switch_ivr_dmachine_binding_t *last_matching_binding;
void *user_data;
switch_mutex_t *mutex;
switch_status_t last_return;
uint8_t pinging;
};
static switch_status_t speech_on_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf, switch_dtmf_direction_t direction);
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_last_ping(switch_ivr_dmachine_t *dmachine)
{
return dmachine->last_return;
}
SWITCH_DECLARE(switch_digit_action_target_t) switch_ivr_dmachine_get_target(switch_ivr_dmachine_t *dmachine)
{
switch_assert(dmachine);
return dmachine->target;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_set_target(switch_ivr_dmachine_t *dmachine, switch_digit_action_target_t target)
{
switch_assert(dmachine);
dmachine->target = target;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_set_match_callback(switch_ivr_dmachine_t *dmachine, switch_ivr_dmachine_callback_t match_callback)
{
switch_assert(dmachine);
dmachine->match_callback = match_callback;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_set_nonmatch_callback(switch_ivr_dmachine_t *dmachine, switch_ivr_dmachine_callback_t nonmatch_callback)
{
switch_assert(dmachine);
dmachine->nonmatch_callback = nonmatch_callback;
}
SWITCH_DECLARE(const char *) switch_ivr_dmachine_get_name(switch_ivr_dmachine_t *dmachine)
{
return (const char *) dmachine->name;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_create(switch_ivr_dmachine_t **dmachine_p,
const char *name,
switch_memory_pool_t *pool,
uint32_t digit_timeout_ms,
uint32_t input_timeout_ms,
switch_ivr_dmachine_callback_t match_callback,
switch_ivr_dmachine_callback_t nonmatch_callback,
void *user_data)
{
switch_byte_t my_pool = 0;
switch_ivr_dmachine_t *dmachine;
if (!pool) {
switch_core_new_memory_pool(&pool);
my_pool = 1;
}
dmachine = switch_core_alloc(pool, sizeof(*dmachine));
dmachine->pool = pool;
dmachine->my_pool = my_pool;
dmachine->digit_timeout_ms = digit_timeout_ms;
dmachine->input_timeout_ms = input_timeout_ms;
dmachine->match.dmachine = dmachine;
dmachine->name = switch_core_strdup(dmachine->pool, name);
switch_mutex_init(&dmachine->mutex, SWITCH_MUTEX_NESTED, dmachine->pool);
switch_core_hash_init(&dmachine->binding_hash);
if (match_callback) {
dmachine->match_callback = match_callback;
}
if (nonmatch_callback) {
dmachine->nonmatch_callback = nonmatch_callback;
}
dmachine->user_data = user_data;
*dmachine_p = dmachine;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_set_digit_timeout_ms(switch_ivr_dmachine_t *dmachine, uint32_t digit_timeout_ms)
{
dmachine->digit_timeout_ms = digit_timeout_ms;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_set_input_timeout_ms(switch_ivr_dmachine_t *dmachine, uint32_t input_timeout_ms)
{
dmachine->input_timeout_ms = input_timeout_ms;
}
SWITCH_DECLARE(void) switch_ivr_dmachine_destroy(switch_ivr_dmachine_t **dmachine)
{
switch_memory_pool_t *pool;
if (!(dmachine && *dmachine)) return;
pool = (*dmachine)->pool;
switch_core_hash_destroy(&(*dmachine)->binding_hash);
if ((*dmachine)->my_pool) {
switch_core_destroy_memory_pool(&pool);
}
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_set_terminators(switch_ivr_dmachine_t *dmachine, const char *terminators)
{
if (!dmachine->realm) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No realm selected.\n");
return SWITCH_STATUS_FALSE;
}
dmachine->realm->terminators = switch_core_strdup(dmachine->pool, terminators);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Digit parser %s: Setting terminators for realm '%s' to '%s'\n",
dmachine->name, dmachine->realm->name, terminators);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_set_realm(switch_ivr_dmachine_t *dmachine, const char *realm)
{
dm_binding_head_t *headp = switch_core_hash_find(dmachine->binding_hash, realm);
if (headp) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Digit parser %s: Setting realm to '%s'\n", dmachine->name, realm);
dmachine->realm = headp;
return SWITCH_STATUS_SUCCESS;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Digit parser %s: Error Setting realm to '%s'\n", dmachine->name, realm);
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_clear_realm(switch_ivr_dmachine_t *dmachine, const char *realm)
{
dm_binding_head_t *headp;
if (zstr(realm)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Digit parser %s: Error unknown realm: '%s'\n", dmachine->name, realm);
return SWITCH_STATUS_FALSE;
}
headp = switch_core_hash_find(dmachine->binding_hash, realm);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Digit parser %s: Clearing realm '%s'\n", dmachine->name, realm);
if (headp == dmachine->realm) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING,
"Digit parser %s: '%s' was the active realm, no realm currently selected.\n", dmachine->name, realm);
dmachine->realm = NULL;
}
/* pool alloc'd just ditch it and it will give back the memory when we destroy ourselves */
switch_core_hash_delete(dmachine->binding_hash, realm);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_bind(switch_ivr_dmachine_t *dmachine,
const char *realm,
const char *digits,
switch_byte_t is_priority,
int32_t key,
switch_ivr_dmachine_callback_t callback,
void *user_data)
{
switch_ivr_dmachine_binding_t *binding = NULL, *ptr;
switch_size_t len;
dm_binding_head_t *headp;
const char *msg = "";
char *repl = NULL;
char *digits_;
if (strlen(digits) > DMACHINE_MAX_DIGIT_LEN -1) {
return SWITCH_STATUS_FALSE;
}
if (zstr(realm)) {
realm = "default";
}
if (!(headp = switch_core_hash_find(dmachine->binding_hash, realm))) {
headp = switch_core_alloc(dmachine->pool, sizeof(*headp));
headp->name = switch_core_strdup(dmachine->pool, realm);
switch_core_hash_insert(dmachine->binding_hash, realm, headp);
}
for(ptr = headp->binding_list; ptr; ptr = ptr->next) {
if ((ptr->is_regex && !strcmp(ptr->digits, digits+1)) || !strcmp(ptr->digits, digits)) {
msg = "Reuse Existing ";
binding = ptr;
binding->callback = callback;
binding->user_data = user_data;
goto done;
}
}
binding = switch_core_alloc(dmachine->pool, sizeof(*binding));
digits_ = switch_core_strdup(dmachine->pool, digits);
if (*digits_ == '=') {
binding->first_match = 1;
digits_++;
}
if (*digits_ == '~') {
binding->is_regex = 1;
digits_++;
if ((repl = strchr(digits_, '~')) && *(repl+1) == '~') {
*repl++ = '\0';
*repl++ = '\0';
}
}
binding->key = key;
binding->digits = digits_;
binding->is_priority = is_priority;
binding->callback = callback;
binding->user_data = user_data;
binding->repl = repl;
if (headp->tail) {
headp->tail->next = binding;
} else {
headp->binding_list = binding;
}
headp->tail = binding;
len = strlen(digits);
if (dmachine->realm != headp) {
switch_ivr_dmachine_set_realm(dmachine, realm);
}
if (binding->is_regex && dmachine->max_digit_len != DMACHINE_MAX_DIGIT_LEN -1) {
dmachine->max_digit_len = DMACHINE_MAX_DIGIT_LEN -1;
} else if (len > dmachine->max_digit_len) {
dmachine->max_digit_len = (uint32_t) len;
}
done:
if (binding->is_regex) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%sDigit parser %s: binding %s/%s/%d callback: %p data: %p\n",
msg, dmachine->name, digits, realm, key, (void *)(intptr_t) callback, user_data);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%sDigit parser %s: binding %s/%s/%d callback: %p data: %p\n",
msg, dmachine->name, digits, realm, key, (void *)(intptr_t) callback, user_data);
}
return SWITCH_STATUS_SUCCESS;
}
typedef enum {
DM_MATCH_NONE,
DM_MATCH_EXACT,
DM_MATCH_PARTIAL,
DM_MATCH_BOTH,
DM_MATCH_NEVER
} dm_match_t;
static dm_match_t switch_ivr_dmachine_check_match(switch_ivr_dmachine_t *dmachine, switch_bool_t is_timeout)
{
dm_match_t best = DM_MATCH_NONE;
switch_ivr_dmachine_binding_t *bp, *exact_bp = NULL, *partial_bp = NULL, *both_bp = NULL, *r_bp = NULL;
int pmatches = 0, ematches = 0, rmatches = 0;
if (!dmachine->cur_digit_len || !dmachine->realm) goto end;
for(bp = dmachine->realm->binding_list; bp; bp = bp->next) {
if (bp->is_regex) {
if (bp->repl) {
int ovector[30] = { 0 };
int proceed = 0;
switch_regex_t *re = NULL;
proceed = switch_regex_perform(dmachine->digits, bp->digits, &re, ovector, sizeof(ovector) / sizeof(ovector[0]));
if (proceed) {
char *substituted = NULL;
switch_size_t len;
len = (strlen(dmachine->digits) + strlen(bp->digits) + 10) * proceed;
substituted = malloc(len);
switch_assert(substituted);
memset(substituted, 0, len);
switch_perform_substitution(re, proceed, bp->repl, dmachine->digits, substituted, len, ovector);
if (!bp->substituted || strcmp(substituted, bp->substituted)) {
bp->substituted = switch_core_strdup(dmachine->pool, substituted);
}
free(substituted);
switch_regex_safe_free(re);
bp->rmatch = 1;
} else {
bp->substituted = NULL;
bp->rmatch = 0;
}
} else {
switch_status_t r_status = switch_regex_match(dmachine->digits, bp->digits);
bp->rmatch = r_status == SWITCH_STATUS_SUCCESS;
}
rmatches++;
pmatches++;
if (bp->rmatch && bp->first_match) break;
} else {
if (!strncmp(dmachine->digits, bp->digits, strlen(dmachine->digits))) {
pmatches++;
if (dmachine->cur_digit_len == strlen(bp->digits)) {
ematches++;
}
}
}
}
if (!zstr(dmachine->realm->terminators)) {
char *p = dmachine->realm->terminators;
char *q;
while(p && *p) {
if ((q=strrchr(dmachine->digits, *p))) {
*q = '\0';
is_timeout = 1;
break;
}
p++;
}
}
for(bp = dmachine->realm->binding_list; bp; bp = bp->next) {
if (bp->is_regex) {
if (bp->rmatch) {
if (bp->first_match || (bp->is_priority && ! ematches) || is_timeout || (bp == dmachine->realm->binding_list && !bp->next)) {
best = DM_MATCH_EXACT;
exact_bp = bp;
break;
}
best = DM_MATCH_PARTIAL;
}
} else {
int pmatch = !strncmp(dmachine->digits, bp->digits, strlen(dmachine->digits));
if (!exact_bp && pmatch && (bp->first_match || !rmatches || bp->is_priority || is_timeout) && !strcmp(bp->digits, dmachine->digits)) {
best = DM_MATCH_EXACT;
exact_bp = bp;
if (bp->first_match || bp->is_priority || dmachine->cur_digit_len == dmachine->max_digit_len) break;
}
if (!(both_bp && partial_bp) && strlen(bp->digits) != strlen(dmachine->digits) && pmatch) {
if (exact_bp) {
best = DM_MATCH_BOTH;
both_bp = bp;
} else {
best = DM_MATCH_PARTIAL;
partial_bp = bp;
}
}
if (both_bp && exact_bp && partial_bp) break;
}
}
if (!pmatches) {
best = DM_MATCH_NEVER;
}
end:
if (is_timeout) {
if (both_bp) {
r_bp = exact_bp ? exact_bp : both_bp;
}
}
if (best == DM_MATCH_EXACT && exact_bp) {
r_bp = exact_bp;
}
if (r_bp) {
dmachine->last_matching_binding = r_bp;
if (r_bp->substituted) {
switch_set_string(dmachine->last_matching_digits, r_bp->substituted);
} else {
switch_set_string(dmachine->last_matching_digits, dmachine->digits);
}
best = DM_MATCH_EXACT;
}
return best;
}
static switch_bool_t switch_ivr_dmachine_check_timeout(switch_ivr_dmachine_t *dmachine)
{
switch_time_t now = switch_time_now();
uint32_t timeout = dmachine->cur_digit_len ? dmachine->digit_timeout_ms : dmachine->input_timeout_ms;
if (!dmachine->last_digit_time) dmachine->last_digit_time = now;
if (timeout) {
if ((uint32_t)((now - dmachine->last_digit_time) / 1000) > timeout) {
return SWITCH_TRUE;
}
}
return SWITCH_FALSE;
}
SWITCH_DECLARE(switch_ivr_dmachine_match_t *) switch_ivr_dmachine_get_match(switch_ivr_dmachine_t *dmachine)
{
if (dmachine->is_match) {
dmachine->is_match = 0;
return &dmachine->match;
}
return NULL;
}
SWITCH_DECLARE(const char *) switch_ivr_dmachine_get_failed_digits(switch_ivr_dmachine_t *dmachine)
{
return dmachine->last_failed_digits;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_ping(switch_ivr_dmachine_t *dmachine, switch_ivr_dmachine_match_t **match_p)
{
switch_bool_t is_timeout = switch_ivr_dmachine_check_timeout(dmachine);
dm_match_t is_match = switch_ivr_dmachine_check_match(dmachine, is_timeout);
switch_status_t r, s;
int clear = 0;
if (is_match == DM_MATCH_NEVER) {
is_timeout++;
}
if (switch_mutex_trylock(dmachine->mutex) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_SUCCESS;
}
if (dmachine->pinging) {
return SWITCH_STATUS_BREAK;
}
dmachine->pinging = 1;
if (zstr(dmachine->digits) && !is_timeout) {
r = SWITCH_STATUS_SUCCESS;
} else if (dmachine->cur_digit_len > dmachine->max_digit_len) {
r = SWITCH_STATUS_FALSE;
} else if (is_match == DM_MATCH_EXACT || (is_match == DM_MATCH_BOTH && is_timeout)) {
r = SWITCH_STATUS_FOUND;
dmachine->match.match_digits = dmachine->last_matching_digits;
dmachine->match.match_key = dmachine->last_matching_binding->key;
dmachine->match.user_data = dmachine->last_matching_binding->user_data;
if (match_p) {
*match_p = &dmachine->match;
}
dmachine->is_match = 1;
dmachine->match.type = DM_MATCH_POSITIVE;
if (dmachine->last_matching_binding->callback) {
s = dmachine->last_matching_binding->callback(&dmachine->match);
switch(s) {
case SWITCH_STATUS_CONTINUE:
r = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_SUCCESS:
break;
default:
r = SWITCH_STATUS_BREAK;
break;
}
}
if (dmachine->match_callback) {
dmachine->match.user_data = dmachine->user_data;
s = dmachine->match_callback(&dmachine->match);
switch(s) {
case SWITCH_STATUS_CONTINUE:
r = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_SUCCESS:
break;
default:
r = SWITCH_STATUS_BREAK;
break;
}
}
clear++;
} else if (is_timeout) {
r = SWITCH_STATUS_TIMEOUT;
} else if (is_match == DM_MATCH_NONE && dmachine->cur_digit_len == dmachine->max_digit_len) {
r = SWITCH_STATUS_NOTFOUND;
} else {
r = SWITCH_STATUS_SUCCESS;
}
if (r != SWITCH_STATUS_FOUND && r != SWITCH_STATUS_SUCCESS && r != SWITCH_STATUS_BREAK) {
switch_set_string(dmachine->last_failed_digits, dmachine->digits);
dmachine->match.match_digits = dmachine->last_failed_digits;
dmachine->match.type = DM_MATCH_NEGATIVE;
if (dmachine->nonmatch_callback) {
dmachine->match.user_data = dmachine->user_data;
s = dmachine->nonmatch_callback(&dmachine->match);
switch(s) {
case SWITCH_STATUS_CONTINUE:
r = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_SUCCESS:
break;
default:
r = SWITCH_STATUS_BREAK;
break;
}
}
clear++;
}
if (clear) {
switch_ivr_dmachine_clear(dmachine);
}
dmachine->last_return = r;
dmachine->pinging = 0;
switch_mutex_unlock(dmachine->mutex);
return r;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_feed(switch_ivr_dmachine_t *dmachine, const char *digits, switch_ivr_dmachine_match_t **match)
{
const char *p;
switch_status_t status = SWITCH_STATUS_BREAK;
if (!zstr(digits)) {
status = SWITCH_STATUS_SUCCESS;
}
for (p = digits; p && *p; p++) {
switch_mutex_lock(dmachine->mutex);
if (dmachine->cur_digit_len < dmachine->max_digit_len) {
switch_status_t istatus;
char *e = dmachine->digits + strlen(dmachine->digits);
*e++ = *p;
*e = '\0';
dmachine->cur_digit_len++;
switch_mutex_unlock(dmachine->mutex);
dmachine->last_digit_time = switch_time_now();
if (status == SWITCH_STATUS_SUCCESS && (istatus = switch_ivr_dmachine_ping(dmachine, match)) != SWITCH_STATUS_SUCCESS) {
status = istatus;
}
} else {
switch_mutex_unlock(dmachine->mutex);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "dmachine overflow error!\n");
status = SWITCH_STATUS_FALSE;
}
}
return status;
}
SWITCH_DECLARE(switch_bool_t) switch_ivr_dmachine_is_parsing(switch_ivr_dmachine_t *dmachine)
{
return !!dmachine->cur_digit_len;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_dmachine_clear(switch_ivr_dmachine_t *dmachine)
{
memset(dmachine->digits, 0, sizeof(dmachine->digits));
dmachine->cur_digit_len = 0;
dmachine->last_digit_time = 0;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_session_echo(switch_core_session_t *session, switch_input_args_t *args)
{
switch_status_t status;
switch_frame_t *read_frame;
switch_channel_t *channel = switch_core_session_get_channel(session);
if (switch_channel_pre_answer(channel) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_FALSE;
}
arg_recursion_check_start(args);
if (switch_channel_var_true(channel, "echo_decode_video")) {
switch_channel_set_flag_recursive(channel, CF_VIDEO_DECODED_READ);
}
if (switch_channel_var_true(channel, "echo_decode_audio")) {
switch_core_session_raw_read(session);
}
switch_channel_set_flag(channel, CF_VIDEO_ECHO);
switch_channel_set_flag(channel, CF_TEXT_ECHO);
while (switch_channel_ready(channel)) {
status = switch_core_session_read_frame(session, &read_frame, SWITCH_IO_FLAG_NONE, 0);
if (!SWITCH_READ_ACCEPTABLE(status)) {
break;
}
switch_ivr_parse_all_events(session);
if (args && (args->input_callback || args->buf || args->buflen)) {
switch_dtmf_t dtmf = {0};
/*
dtmf handler function you can hook up to be executed when a digit is dialed during playback
if you return anything but SWITCH_STATUS_SUCCESS the playback will stop.
*/
if (switch_channel_has_dtmf(channel)) {
if (!args->input_callback && !args->buf) {
break;
}
switch_channel_dequeue_dtmf(channel, &dtmf);
if (args->input_callback) {
status = args->input_callback(session, (void *) &dtmf, SWITCH_INPUT_TYPE_DTMF, args->buf, args->buflen);
} else {
*((char *) args->buf) = dtmf.digit;
status = SWITCH_STATUS_BREAK;
}
}
if (args->input_callback) {
switch_event_t *event = NULL;
if (switch_core_session_dequeue_event(session, &event, SWITCH_FALSE) == SWITCH_STATUS_SUCCESS) {
status = args->input_callback(session, event, SWITCH_INPUT_TYPE_EVENT, args->buf, args->buflen);
switch_event_destroy(&event);
}
}
if (status != SWITCH_STATUS_SUCCESS) {
break;
}
}
switch_core_session_write_frame(session, read_frame, SWITCH_IO_FLAG_NONE, 0);
if (switch_channel_test_flag(channel, CF_BREAK)) {
switch_channel_clear_flag(channel, CF_BREAK);
break;
}
}
if (switch_channel_var_true(channel, "echo_decode_video")) {
switch_channel_clear_flag_recursive(channel, CF_VIDEO_DECODED_READ);
}
switch_core_session_video_reset(session);
switch_core_session_reset(session, SWITCH_TRUE, SWITCH_TRUE);
switch_channel_clear_flag(channel, CF_TEXT_ECHO);
return SWITCH_STATUS_SUCCESS;
}
typedef struct {
switch_file_handle_t fh;
int mux;
int loop;
char *file;
switch_buffer_t *wbuffer; // only in r&w mode
switch_mutex_t *mutex;
} displace_helper_t;
static switch_bool_t write_displace_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
displace_helper_t *dh = (displace_helper_t *) user_data;
switch (type) {
case SWITCH_ABC_TYPE_INIT:
break;
case SWITCH_ABC_TYPE_CLOSE:
if (dh) {
switch_core_session_t *session = switch_core_media_bug_get_session(bug);
switch_channel_t *channel;
switch_core_file_close(&dh->fh);
if (session && (channel = switch_core_session_get_channel(session))) {
switch_channel_set_private(channel, dh->file, NULL);
}
}
break;
case SWITCH_ABC_TYPE_READ_REPLACE:
{
switch_frame_t *rframe = switch_core_media_bug_get_read_replace_frame(bug);
if (dh && !dh->mux) {
memset(rframe->data, 255, rframe->datalen);
}
switch_core_media_bug_set_read_replace_frame(bug, rframe);
}
break;
case SWITCH_ABC_TYPE_WRITE_REPLACE:
if (dh) {
switch_frame_t *rframe = NULL;
switch_size_t len;
switch_status_t st;
rframe = switch_core_media_bug_get_write_replace_frame(bug);
len = rframe->samples;
if (dh->mux) {
int16_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
int16_t *fp = rframe->data;
uint32_t x;
st = switch_core_file_read(&dh->fh, buf, &len);
for (x = 0; x < (uint32_t) len * dh->fh.channels; x++) {
int32_t mixed = fp[x] + buf[x];
switch_normalize_to_16bit(mixed);
fp[x] = (int16_t) mixed;
}
} else {
st = switch_core_file_read(&dh->fh, rframe->data, &len);
if (len < rframe->samples) {
memset((char *)rframe->data + (len * 2 * dh->fh.channels), 0, (rframe->samples - len) * 2 * dh->fh.channels);
}
}
rframe->datalen = rframe->samples * 2 * dh->fh.channels;
if (st != SWITCH_STATUS_SUCCESS || len == 0) {
if (dh->loop) {
uint32_t pos = 0;
switch_core_file_seek(&dh->fh, &pos, 0, SEEK_SET);
} else {
switch_core_session_t *session = switch_core_media_bug_get_session(bug);
switch_channel_t *channel;
if (session && (channel = switch_core_session_get_channel(session))) {
switch_channel_set_private(channel, dh->file, NULL);
}
return SWITCH_FALSE;
}
}
switch_core_media_bug_set_write_replace_frame(bug, rframe);
}
break;
case SWITCH_ABC_TYPE_WRITE:
default:
break;
}
return SWITCH_TRUE;
}
static switch_bool_t read_displace_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
displace_helper_t *dh = (displace_helper_t *) user_data;
switch (type) {
case SWITCH_ABC_TYPE_INIT:
break;
case SWITCH_ABC_TYPE_CLOSE:
if (dh) {
switch_core_session_t *session = switch_core_media_bug_get_session(bug);
switch_channel_t *channel;
if (dh->wbuffer) switch_buffer_destroy(&dh->wbuffer);
if (dh->mutex) switch_mutex_destroy(dh->mutex);
switch_core_file_close(&dh->fh);
if (session && (channel = switch_core_session_get_channel(session))) {
switch_channel_set_private(channel, dh->file, NULL);
}
}
break;
case SWITCH_ABC_TYPE_WRITE_REPLACE:
{
switch_frame_t *rframe = switch_core_media_bug_get_write_replace_frame(bug);
if (dh) {
if (dh->wbuffer) {
switch_mutex_lock(dh->mutex);
if (switch_buffer_inuse(dh->wbuffer) >= rframe->datalen) {
switch_buffer_read(dh->wbuffer, rframe->data, rframe->datalen);
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(switch_core_media_bug_get_session(bug)),
SWITCH_LOG_WARNING, "not enough data %" SWITCH_SIZE_T_FMT "\n",
switch_buffer_inuse(dh->wbuffer));
memset(rframe->data, 255, rframe->datalen);
}
switch_mutex_unlock(dh->mutex);
} else if (!dh->mux) {
memset(rframe->data, 255, rframe->datalen);
}
}
switch_core_media_bug_set_write_replace_frame(bug, rframe);
}
break;
case SWITCH_ABC_TYPE_READ_REPLACE:
if (dh) {
switch_frame_t *rframe = NULL;
switch_size_t len;
switch_status_t st;
rframe = switch_core_media_bug_get_read_replace_frame(bug);
len = rframe->samples;
if (dh->mux) {
int16_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
int16_t *fp = rframe->data;
uint32_t x;
st = switch_core_file_read(&dh->fh, buf, &len);
for (x = 0; x < (uint32_t) len * dh->fh.channels; x++) {
int32_t mixed = fp[x] + buf[x];
switch_normalize_to_16bit(mixed);
fp[x] = (int16_t) mixed;
}
} else {
st = switch_core_file_read(&dh->fh, rframe->data, &len);
rframe->samples = (uint32_t) len;
if (dh->wbuffer) {
switch_mutex_lock(dh->mutex);
switch_buffer_write(dh->wbuffer, rframe->data, len * 2 * dh->fh.channels);
switch_mutex_unlock(dh->mutex);
}
}
rframe->datalen = rframe->samples * 2 * dh->fh.channels;
if (st != SWITCH_STATUS_SUCCESS || len == 0) {
if (dh->loop) {
uint32_t pos = 0;
switch_core_file_seek(&dh->fh, &pos, 0, SEEK_SET);
} else {
switch_core_session_t *session = switch_core_media_bug_get_session(bug);
switch_channel_t *channel;
if (session && (channel = switch_core_session_get_channel(session))) {
switch_channel_set_private(channel, dh->file, NULL);
}
return SWITCH_FALSE;
}
}
switch_core_media_bug_set_read_replace_frame(bug, rframe);
}
break;
case SWITCH_ABC_TYPE_WRITE:
default:
break;
}
return SWITCH_TRUE;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_stop_displace_session(switch_core_session_t *session, const char *file)
{
switch_media_bug_t *bug;
switch_channel_t *channel = switch_core_session_get_channel(session);
if ((bug = switch_channel_get_private(channel, file))) {
switch_channel_set_private(channel, file, NULL);
switch_core_media_bug_remove(session, &bug);
return SWITCH_STATUS_SUCCESS;
}
return SWITCH_STATUS_FALSE;
}
SWITCH_DECLARE(switch_status_t) switch_ivr_displace_session(switch_core_session_t *session, const char *file, uint32_t limit, const char *flags)
{
switch_channel_t *channel = switch_core_session_get_channel(session);