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Merge pull request #712 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:bugfix/FS-8810-avmd-cosinus-table-creation-fails to master 

* commit '1c39305fad68b03bf578a77e91d0c20ba8b8145e':
  FS-8810 fix crash on FS startup
This commit is contained in:
Mike Jerris 2016-03-15 16:11:11 -05:00
parent 17476675de 1c39305fad
commit 02e83c91d9
3 changed files with 204 additions and 42 deletions
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93
src/mod/applications/mod_avmd/fast_acosf.c
View File

@ -1,3 +1,4 @@
#include <switch.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _MSC_VER
@ -12,6 +13,7 @@
#include <assert.h>
#include <errno.h>
#include <math.h>
#include <string.h>
#ifndef _MSC_VER
#include <unistd.h>
#endif
@ -56,57 +58,94 @@ static float strip_float(float f)
}
#endif
extern void compute_table(void)
extern int compute_table(void)
{
uint32_t i;
float f;
FILE *acos_table_file;
size_t ret;
float f;
FILE *acos_table_file;
size_t res;
acos_table_file = fopen(ACOS_TABLE_FILENAME, "w");
for (i = 0; i < ACOS_TABLE_LENGTH; i++) {
f = acosf(float_from_index(i));
ret = fwrite(&f, sizeof(f), 1, acos_table_file);
assert(ret != 0);
res = fwrite(&f, sizeof(f), 1, acos_table_file);
if (res != 1) {
goto fail;
}
}
ret = fclose(acos_table_file);
assert(ret != EOF);
res = fclose(acos_table_file);
if (res != 0) {
return -2;
}
return 0;
fail:
fclose(acos_table_file);
return -1;
}
extern void init_fast_acosf(void)
extern int init_fast_acosf(void)
{
int ret;
int ret, errsv;
FILE *acos_fp;
char err[150];
if (acos_table == NULL) {
ret = access(ACOS_TABLE_FILENAME, F_OK);
if (ret == 0) compute_table();
if (ret == -1) {
/* file doesn't exist, bad permissions,
* or some other error occured */
errsv = errno;
strerror_r(errsv, err, 150);
if (errsv != ENOENT) return -1;
else {
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_NOTICE,
"File [%s] doesn't exist. Creating file...\n", ACOS_TABLE_FILENAME
);
ret = compute_table();
if (ret != 0) return -2;
}
} else {
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_INFO,
"Using previously created file [%s]\n", ACOS_TABLE_FILENAME
);
}
}
acos_fd = open(ACOS_TABLE_FILENAME, O_RDONLY);
if (acos_fd == -1) perror("Could not open file " ACOS_TABLE_FILENAME);
assert(acos_fd != -1);
acos_table = (float *)mmap(
NULL,
acos_fp = fopen(ACOS_TABLE_FILENAME, "r");
if (acos_fp == NULL) return -3;
/* can't fail */
acos_fd = fileno(acos_fp);
acos_table = (float *) mmap(
NULL, /* kernel chooses the address at which to create the mapping */
ACOS_TABLE_LENGTH * sizeof(float),
PROT_READ,
MAP_SHARED | MAP_POPULATE,
MAP_SHARED | MAP_POPULATE, /* read-ahead on the file. Later accesses to the mapping
* will not be blocked by page faults */
acos_fd,
0
);
}
);
if (acos_table == MAP_FAILED) return -4;
return 0;
}
extern void destroy_fast_acosf(void)
extern int destroy_fast_acosf(void)
{
int ret;
ret = munmap(acos_table, ACOS_TABLE_LENGTH);
assert(ret != -1);
ret = close(acos_fd);
assert(ret != -1);
if (munmap(acos_table, ACOS_TABLE_LENGTH) == -1) return -1;
if (acos_fd != -1) {
if (close(acos_fd) == -1) return -2;
}
/* disable use of fast arc cosine file */
acos_table = NULL;
return 0;
}
extern float fast_acosf(float x)

42
src/mod/applications/mod_avmd/fast_acosf.h
View File

@ -1,10 +1,46 @@
#ifndef __FAST_ACOSF_H__
#define __FAST_ACOSF_H__
extern void init_fast_acosf(void);
#define ACOS_TABLE_FILENAME "/tmp/acos_table.dat"
/*! \brief Arc cosine table initialization.
*
* @author Eric des Courtis
* @par Changes: Piotr Gregor, 07 Feb 2016 (FS-8809, FS-8810)
* @return 0 on success, negative value otherwise:
* -1 can't access arc cos table with error != NOENT,
* -2 table creation failed (compute_table)
* -3 can access table but fopen failed
* -4 mmap failed
*/
extern int init_fast_acosf(void);
/*! \brief Arc cosine table deinitialization.
*
* @author Eric des Courtis
* @par Changes: Piotr Gregor, 09 Feb 2016 (FS-8809, FS-8810)
* @return 0 on success, negative value otherwise:
* -1 munmap failed,
* -2 close failed
*/
extern int destroy_fast_acosf(void);
/*! \brief Return arc cos for this argument.
* @details Uses previously created and mmapped file.
* @author Eric des Courtis
*/
extern float fast_acosf(float x);
extern void destroy_fast_acosf(void);
extern void compute_table(void);
/*! \brief Arc cosine table creation.
*
* @author Eric des Courtis
* @par Changes: Piotr Gregor, 07 Feb 2016 (FS-8809, FS-8810)
* @return 0 on success, negative value otherwise:
* -1 fwrite failed,
* -2 fclose failed
*/
extern int compute_table(void);
#endif

111
src/mod/applications/mod_avmd/mod_avmd.c
View File

@ -93,7 +93,7 @@ SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_avmd_shutdown);
SWITCH_STANDARD_API(avmd_api_main);
SWITCH_MODULE_LOAD_FUNCTION(mod_avmd_load);
SWITCH_MODULE_DEFINITION(mod_avmd, mod_avmd_load, NULL, NULL);
SWITCH_MODULE_DEFINITION(mod_avmd, mod_avmd_load, mod_avmd_shutdown, NULL);
SWITCH_STANDARD_APP(avmd_start_function);
/*! Status of the beep detection */
@ -206,10 +206,16 @@ static switch_bool_t avmd_callback(switch_media_bug_t * bug, void *user_data, sw
/*! \brief FreeSWITCH module loading function.
*
* @author Eric des Courtis
* @return Load success or failure.
* @par Changes: Piotr Gregor, 07 Feb 2016 (FS-8809, FS-8810)
* @return On success SWITCH_STATUS_SUCCES,
* on failure SWITCH_STATUS_TERM.
*/
SWITCH_MODULE_LOAD_FUNCTION(mod_avmd_load)
{
#ifdef FASTMATH
char err[150];
int ret;
#endif
switch_application_interface_t *app_interface;
switch_api_interface_t *api_interface;
@ -218,7 +224,8 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_avmd_load)
if (switch_event_reserve_subclass(AVMD_EVENT_BEEP) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass %s!\n", AVMD_EVENT_BEEP);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,
"Couldn't register subclass [%s]!\n", AVMD_EVENT_BEEP);
return SWITCH_STATUS_TERM;
}
@ -227,14 +234,66 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_avmd_load)
SWITCH_CHANNEL_LOG,
SWITCH_LOG_NOTICE,
"Advanced Voicemail detection enabled\n"
);
);
#ifdef FASTMATH
init_fast_acosf();
ret = init_fast_acosf();
if (ret != 0) {
strerror_r(errno, err, 150);
switch (ret) {
case -1:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Can't access file [%s], error [%s]\n",
ACOS_TABLE_FILENAME, err
);
break;
case -2:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Error creating file [%s], error [%s]\n",
ACOS_TABLE_FILENAME, err
);
break;
case -3:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Access rights are OK but can't open file [%s], error [%s]\n",
ACOS_TABLE_FILENAME, err
);
break;
case -4:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Access rights are OK but can't mmap file [%s], error [%s]\n",
ACOS_TABLE_FILENAME, err
);
break;
default:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Unknown error [%d] while initializing fast cos table [%s], "
"errno [%s]\n", ret, ACOS_TABLE_FILENAME, err
);
return SWITCH_STATUS_TERM;
}
return SWITCH_STATUS_TERM;
} else
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_NOTICE,
"Advanced Voicemail detection: fast math enabled\n"
"Advanced Voicemail detection: fast math enabled, arc cosine table "
"is [%s]\n", ACOS_TABLE_FILENAME
);
#endif
@ -246,7 +305,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_avmd_load)
avmd_start_function,
"[start] [stop]",
SAF_NONE
);
);
SWITCH_ADD_API(api_interface, "avmd", "Voicemail beep detection", avmd_api_main, AVMD_SYNTAX);
@ -328,11 +387,34 @@ SWITCH_STANDARD_APP(avmd_start_function)
*/
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_avmd_shutdown)
{
#ifdef FASTMATH
int res;
#endif
switch_event_free_subclass(AVMD_EVENT_BEEP);
#ifdef FASTMATH
destroy_fast_acosf();
res = destroy_fast_acosf();
if (res != 0) {
switch (res) {
case -1:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Failed unmap arc cosine table\n"
);
break;
case -2:
switch_log_printf(
SWITCH_CHANNEL_LOG,
SWITCH_LOG_ERROR,
"Failed closing arc cosine table\n"
);
break;
default:
break;
}
}
#endif
switch_log_printf(
@ -537,13 +619,16 @@ static void avmd_process(avmd_session_t *session, switch_frame_t *frame)
/* calculate variance */
v = session->sqa_b.sma - (session->sma_b.sma * session->sma_b.sma);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session->session), SWITCH_LOG_DEBUG, "<<< AVMD v=%f f=%f %fHz sma=%f sqa=%f >>>\n", v, f, TO_HZ(session->rate, f), session->sma_b.sma, session->sqa_b.sma);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session->session), SWITCH_LOG_DEBUG,
"<<< AVMD v=[%f] f=[%f] [%f]Hz sma=[%f] sqa=[%f] >>>\n", v, f, TO_HZ(session->rate, f),
session->sma_b.sma, session->sqa_b.sma);
}
/*! If variance is less than threshold then we have detection */
if (v < VARIANCE_THRESHOLD) {
switch_channel_set_variable_printf(channel, "avmd_total_time", "%d", (int)(switch_micro_time_now() - session->start_time) / 1000);
switch_channel_set_variable_printf(channel, "avmd_total_time",
"[%d]", (int)(switch_micro_time_now() - session->start_time) / 1000);
switch_channel_execute_on(channel, "execute_on_avmd_beep");
/*! Throw an event to FreeSWITCH */
@ -551,7 +636,8 @@ static void avmd_process(avmd_session_t *session, switch_frame_t *frame)
if (status != SWITCH_STATUS_SUCCESS) return;
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Beep-Status", "stop");
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Unique-ID", switch_core_session_get_uuid(session->session));
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Unique-ID",
switch_core_session_get_uuid(session->session));
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "call-command", "avmd");
if ((switch_event_dup(&event_copy, event)) != SWITCH_STATUS_SUCCESS) return;
@ -559,7 +645,8 @@ static void avmd_process(avmd_session_t *session, switch_frame_t *frame)
switch_core_session_queue_event(session->session, &event);
switch_event_fire(&event_copy);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session->session), SWITCH_LOG_DEBUG, "<<< AVMD - Beep Detected >>>\n");
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session->session), SWITCH_LOG_DEBUG,
"<<< AVMD - Beep Detected >>>\n");
switch_channel_set_variable(channel, "avmd_detect", "TRUE");
RESET_SMA_BUFFER(&session->sma_b);
RESET_SMA_BUFFER(&session->sqa_b);