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Merge in Moises Silva's mod_bert

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Travis Cross 2014-09-09 09:15:30 +00:00
commit c3d65e902d
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1
build/modules.conf.in
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@ -1,5 +1,6 @@
#applications/mod_abstraction #applications/mod_abstraction
#applications/mod_avmd #applications/mod_avmd
#applications/mod_bert
#applications/mod_blacklist #applications/mod_blacklist
#applications/mod_callcenter #applications/mod_callcenter
#applications/mod_cidlookup #applications/mod_cidlookup

1
configure.ac
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@ -1455,6 +1455,7 @@ AC_CONFIG_FILES([Makefile
src/mod/Makefile src/mod/Makefile
src/mod/applications/mod_abstraction/Makefile src/mod/applications/mod_abstraction/Makefile
src/mod/applications/mod_avmd/Makefile src/mod/applications/mod_avmd/Makefile
src/mod/applications/mod_bert/Makefile
src/mod/applications/mod_blacklist/Makefile src/mod/applications/mod_blacklist/Makefile
src/mod/applications/mod_callcenter/Makefile src/mod/applications/mod_callcenter/Makefile
src/mod/applications/mod_cidlookup/Makefile src/mod/applications/mod_cidlookup/Makefile

8
src/mod/applications/mod_bert/Makefile.am Normal file
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@ -0,0 +1,8 @@
include $(top_srcdir)/build/modmake.rulesam
MODNAME=mod_bert
mod_LTLIBRARIES = mod_bert.la
mod_bert_la_SOURCES = mod_bert.c
mod_bert_la_CFLAGS = $(AM_CFLAGS)
mod_bert_la_LIBADD = $(switch_builddir)/libfreeswitch.la
mod_bert_la_LDFLAGS = -avoid-version -module -no-undefined -shared

389
src/mod/applications/mod_bert/mod_bert.c Normal file
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2011, 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 / Oreka Recording Module
*
* The Initial Developer of the Original Code is
* Moises Silva <moises.silva@gmail.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Moises Silva <moises.silva@gmail.com>
*
* mod_bert -- Naive BERT tester
*
*/
#include <switch.h>
SWITCH_MODULE_LOAD_FUNCTION(mod_bert_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_bert_shutdown);
SWITCH_MODULE_DEFINITION(mod_bert, mod_bert_load, mod_bert_shutdown, NULL);
#define G711_ULAW_IDLE_OCTET 0xFF
/* http://en.wikipedia.org/wiki/Digital_milliwatt */
unsigned char ulaw_digital_milliwatt[8] = { 0x1e, 0x0b, 0x0b, 0x1e, 0x9e, 0x8b, 0x8b, 0x9e };
typedef struct {
uint32_t processed_samples;
uint32_t err_samples;
uint32_t window_ms;
uint32_t window_samples;
uint32_t stats_sync_lost_cnt;
uint32_t stats_cng_cnt;
uint8_t sequence_sample;
uint8_t predicted_sample;
float max_err;
float max_err_hit;
float max_err_ever;
uint8_t in_sync;
uint8_t hangup_on_error;
uint8_t milliwatt_index;
uint8_t milliwatt_prediction_index;
switch_time_t timeout;
FILE *input_debug_f;
FILE *output_debug_f;
switch_timer_t timer;
} bert_t;
#define bert_increase_milliwatt_index(index) \
do { \
if ((index) == (switch_arraylen(ulaw_digital_milliwatt)-1)) { \
(index) = 0; \
} else { \
(index) = ((index) + 1); \
} \
} while (0);
#define bert_close_debug_streams(bert, session) \
do { \
int rc = 0; \
if (bert.input_debug_f) { \
rc = fclose(bert.input_debug_f); \
if (rc) { \
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to close BERT input debug file!\n"); \
} \
bert.input_debug_f = NULL; \
} \
if (bert.output_debug_f) { \
rc = fclose(bert.output_debug_f); \
if (rc) { \
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to close BERT output debug file!\n"); \
} \
bert.output_debug_f = NULL; \
} \
} while (0);
#define BERT_STATS_VAR_SYNC_LOST "bert_stats_sync_lost"
#define BERT_STATS_VAR_SYNC_LOST_CNT "bert_stats_sync_lost_count"
#define BERT_EVENT_TIMEOUT "mod_bert::timeout"
#define BERT_EVENT_LOST_SYNC "mod_bert::lost_sync"
#define BERT_EVENT_IN_SYNC "mod_bert::in_sync"
#define BERT_DEFAULT_WINDOW_MS 1000
#define BERT_DEFAULT_MAX_ERR 10.0
#define BERT_DEFAULT_TIMEOUT_MS 10000
SWITCH_STANDARD_APP(bert_test_function)
{
switch_status_t status;
switch_frame_t *read_frame = NULL, write_frame = { 0 };
switch_codec_implementation_t read_impl = { 0 };
switch_channel_t *channel = NULL;
switch_event_t *event = NULL;
const char *var = NULL;
int i = 0;
int synced = 0;
int32_t timeout_ms = 0;
int32_t interval = 20;
int32_t samples = 0;
uint8_t *write_samples = NULL;
uint8_t *read_samples = NULL;
const char *timer_name = NULL;
bert_t bert = { 0 };
memset(&bert, 0, sizeof(bert));
channel = switch_core_session_get_channel(session);
switch_channel_answer(channel);
switch_core_session_get_read_impl(session, &read_impl);
if (read_impl.ianacode != 0) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "This application only works when using ulaw codec\n");
goto done;
}
bert.window_ms = BERT_DEFAULT_WINDOW_MS;
bert.window_samples = switch_samples_per_packet(read_impl.samples_per_second, bert.window_ms);
bert.max_err = BERT_DEFAULT_MAX_ERR;
timeout_ms = BERT_DEFAULT_TIMEOUT_MS;
/* check if there are user-defined overrides */
if ((var = switch_channel_get_variable(channel, "bert_window_ms"))) {
int tmp = atoi(var);
if (tmp > 0) {
bert.window_ms = tmp;
bert.window_samples = switch_samples_per_packet(read_impl.samples_per_second, bert.window_ms);
}
}
if ((var = switch_channel_get_variable(channel, "bert_timeout_ms"))) {
int tmp = atoi(var);
if (tmp > 0) {
timeout_ms = tmp;
}
}
if ((var = switch_channel_get_variable(channel, "bert_max_err"))) {
double tmp = atoi(var);
if (tmp > 0) {
bert.max_err = (float)tmp;
}
}
if ((var = switch_channel_get_variable(channel, "bert_hangup_on_error"))) {
if (switch_true(var)) {
bert.hangup_on_error = 1;
}
}
if ((var = switch_channel_get_variable(channel, "bert_debug_io_file"))) {
char debug_file[1024];
snprintf(debug_file, sizeof(debug_file), "%s.in", var);
bert.input_debug_f = fopen(debug_file, "w");
if (!bert.input_debug_f) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to open input debug file %s\n", debug_file);
}
snprintf(debug_file, sizeof(debug_file), "%s.out", var);
bert.output_debug_f = fopen(debug_file, "w");
if (!bert.output_debug_f) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to open output debug file %s\n", debug_file);
}
}
if ((var = switch_channel_get_variable(channel, "bert_timer_name"))) {
timer_name = var;
}
/* Setup the timer, so we can send audio at correct time frames even if we do not receive audio */
if (timer_name) {
interval = read_impl.microseconds_per_packet / 1000;
samples = switch_samples_per_packet(read_impl.samples_per_second, interval);
if (switch_core_timer_init(&bert.timer, timer_name, interval, samples, switch_core_session_get_pool(session)) == SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Setup timer success interval: %u samples: %u\n", interval, samples);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Timer Setup Failed. BERT cannot start!\n");
goto done;
}
switch_core_timer_sync(&bert.timer);
}
bert.timeout = (switch_micro_time_now() + (timeout_ms * 1000));
write_frame.codec = switch_core_session_get_read_codec(session);
write_frame.data = switch_core_session_alloc(session, SWITCH_RECOMMENDED_BUFFER_SIZE);
write_frame.buflen = SWITCH_RECOMMENDED_BUFFER_SIZE;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "BERT Test Window=%ums/%u, MaxErr=%f%%, Timeout=%dms\n", bert.window_ms, bert.window_samples, bert.max_err, timeout_ms);
if (bert.window_samples <= 0) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to compute BERT window samples!\n");
goto done;
}
switch_channel_set_variable(channel, BERT_STATS_VAR_SYNC_LOST_CNT, "0");
switch_channel_set_variable(channel, BERT_STATS_VAR_SYNC_LOST, "false");
write_samples = write_frame.data;
for (;;) {
if (!switch_channel_ready(channel)) {
break;
}
switch_ivr_parse_all_events(session);
if (timer_name) {
if (switch_core_timer_next(&bert.timer) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to step on timer!\n");
break;
}
}
/* Write our frame before anything else happens */
for (i = 0; i < read_impl.samples_per_packet; i++) {
/* Calculate our next sequence sample to write */
bert.sequence_sample = ulaw_digital_milliwatt[bert.milliwatt_index];
//switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "[%d] 0x%X\n", bert.milliwatt_index, bert.sequence_sample);
bert_increase_milliwatt_index(bert.milliwatt_index);
//switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "[%d] 0x%X\n", bert.milliwatt_index, bert.sequence_sample);
write_samples[i] = bert.sequence_sample;
}
write_frame.datalen = read_impl.samples_per_packet;
write_frame.samples = read_impl.samples_per_packet;
if (timer_name) {
write_frame.timestamp = bert.timer.samplecount;
} else {
/* playback() does not set write_frame.timestamp unless a timer is used, what's the catch? */
}
if (bert.output_debug_f) {
fwrite(write_frame.data, write_frame.datalen, 1, bert.output_debug_f);
}
status = switch_core_session_write_frame(session, &write_frame, SWITCH_IO_FLAG_NONE, 0);
if (!SWITCH_READ_ACCEPTABLE(status)) {
break;
}
/* Proceed to read and process the read frame ...
* Note core_session_read_frame is a blocking operation, we should probably do reathing in another thread like playback() does using switch_core_service_session() */
status = switch_core_session_read_frame(session, &read_frame, SWITCH_IO_FLAG_NONE, 0);
if (!SWITCH_READ_ACCEPTABLE(status)) {
break;
}
if (bert.timeout && !synced) {
switch_time_t now = switch_micro_time_now();
if (now >= bert.timeout) {
bert.timeout = 0;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "BERT Timeout (read_samples=%d, read_bytes=%d, expected_samples=%d, session=%s)\n",
read_frame->samples, read_frame->datalen, read_impl.samples_per_packet, switch_core_session_get_uuid(session));
if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, BERT_EVENT_TIMEOUT) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_basic_data(channel, event);
switch_event_fire(&event);
}
if (bert.hangup_on_error) {
switch_channel_hangup(channel, SWITCH_CAUSE_MEDIA_TIMEOUT);
}
}
}
/* Treat CNG as silence */
if (switch_test_flag(read_frame, SFF_CNG)) {
read_frame->samples = read_impl.samples_per_packet;
read_frame->datalen = read_impl.samples_per_packet;
memset(read_frame->data, G711_ULAW_IDLE_OCTET, read_frame->datalen);
bert.stats_cng_cnt++;
}
if (read_frame->samples != read_impl.samples_per_packet || !read_frame->datalen) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Read %d samples, expected %d!\n", read_frame->samples, read_impl.samples_per_packet);
continue;
}
read_samples = read_frame->data;
if (bert.input_debug_f) {
size_t ret = fwrite(read_frame->data, read_frame->datalen, 1, bert.input_debug_f);
if (ret != 1) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Failed to write to BERT input debug file!\n");
}
}
/* BERT Sync Loop */
for (i = 0; i < read_frame->samples; i++) {
if (bert.window_samples == bert.processed_samples) {
float err = 0.0;
/* If the channel is going down, then it is expected we'll have errors, ignore them and bail out */
if (!switch_channel_ready(channel)) {
bert_close_debug_streams(bert, session);
break;
}
/* Calculate error rate */
err = ((float)((float)bert.err_samples / (float)bert.processed_samples) * 100.0);
if (err > bert.max_err) {
if (bert.in_sync) {
bert.in_sync = 0;
bert.stats_sync_lost_cnt++;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "BERT Sync Lost: %f%% loss (count=%u, cng_count=%d, err_samples=%u, session=%s)\n",
err, bert.stats_sync_lost_cnt, bert.stats_cng_cnt, bert.err_samples, switch_core_session_get_uuid(session));
switch_channel_set_variable_printf(channel, BERT_STATS_VAR_SYNC_LOST_CNT, "%u", bert.stats_sync_lost_cnt);
switch_channel_set_variable(channel, BERT_STATS_VAR_SYNC_LOST, "true");
if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, BERT_EVENT_LOST_SYNC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_basic_data(channel, event);
switch_event_fire(&event);
}
if (bert.hangup_on_error) {
switch_channel_hangup(channel, SWITCH_CAUSE_MEDIA_TIMEOUT);
bert_close_debug_streams(bert, session);
}
}
} else if (!bert.in_sync) {
bert.in_sync = 1;
synced = 1;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "BERT Sync Success\n");
bert.stats_cng_cnt = 0;
bert.timeout = 0;
if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, BERT_EVENT_IN_SYNC) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_basic_data(channel, event);
switch_event_fire(&event);
}
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG10, "Err=%f%% (%u/%u)\n", err, bert.err_samples, bert.processed_samples);
if (synced && err > bert.max_err_hit) {
bert.max_err_hit = err;
}
if (err > bert.max_err_ever) {
bert.max_err_ever = err;
}
bert.processed_samples = 0;
bert.err_samples = 0;
}
if (bert.predicted_sample != read_samples[i]) {
bert.err_samples++;
if (!bert.in_sync) {
/* If we're not in sync, we must reset the index on error to start the pattern detection again */
bert.milliwatt_prediction_index = 0;
}
}
/* Try to guess what the next sample will be in the milliwatt sequence */
bert.predicted_sample = ulaw_digital_milliwatt[bert.milliwatt_prediction_index];
bert_increase_milliwatt_index(bert.milliwatt_prediction_index);
bert.processed_samples++;
}
}
done:
bert_close_debug_streams(bert, session);
if (bert.timer.interval) {
switch_core_timer_destroy(&bert.timer);
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "BERT Test Completed. MaxErr=%f%%\n", synced ? bert.max_err_hit : bert.max_err_ever);
}
SWITCH_MODULE_LOAD_FUNCTION(mod_bert_load)
{
switch_application_interface_t *app_interface = NULL;
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_APP(app_interface, "bert_test", "Start BERT Test", "Start BERT Test", bert_test_function, "", SAF_NONE);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_bert_shutdown)
{
return SWITCH_STATUS_UNLOAD;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:nil
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4:
*/