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Diffstat (limited to '1.2-netsec/apps/app_waitforsilence.c')
| -rw-r--r-- | 1.2-netsec/apps/app_waitforsilence.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/1.2-netsec/apps/app_waitforsilence.c b/1.2-netsec/apps/app_waitforsilence.c deleted file mode 100644 index 615eddbce..000000000 --- a/1.2-netsec/apps/app_waitforsilence.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * WaitForSilence Application by David C. Troy <dave@popvox.com> - * Version 1.00 2004-01-29 - * - * Mark Spencer <markster@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * - * \brief Wait for Silence - * - Waits for up to 'x' milliseconds of silence, 'y' times \n - * - WaitForSilence(500,2) will wait for 1/2 second of silence, twice \n - * - WaitForSilence(1000,1) will wait for 1 second of silence, once \n - * - * \ingroup applications - */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include "asterisk/file.h" -#include "asterisk/logger.h" -#include "asterisk/channel.h" -#include "asterisk/pbx.h" -#include "asterisk/dsp.h" -#include "asterisk/module.h" -#include "asterisk/options.h" - -static char *tdesc = "Wait For Silence"; -static char *app = "WaitForSilence"; -static char *synopsis = "Waits for a specified amount of silence"; -static char *descrip = -" WaitForSilence(x[|y]) Wait for Silence: Waits for up to 'x' \n" -"milliseconds of silence, 'y' times or 1 if omitted\n" -"Set the channel variable WAITSTATUS with to one of these values:" -"SILENCE - if silence of x ms was detected" -"TIMEOUT - if silence of x ms was not detected." -"Examples:\n" -" - WaitForSilence(500|2) will wait for 1/2 second of silence, twice\n" -" - WaitForSilence(1000) will wait for 1 second of silence, once\n"; - -STANDARD_LOCAL_USER; - -LOCAL_USER_DECL; - -static int do_waiting(struct ast_channel *chan, int maxsilence) { - - struct ast_frame *f; - int totalsilence = 0; - int dspsilence = 0; - int gotsilence = 0; - static int silencethreshold = 64; - int rfmt = 0; - int res = 0; - struct ast_dsp *sildet; /* silence detector dsp */ - time_t start, now; - time(&start); - - rfmt = chan->readformat; /* Set to linear mode */ - res = ast_set_read_format(chan, AST_FORMAT_SLINEAR); - if (res < 0) { - ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n"); - return -1; - } - - sildet = ast_dsp_new(); /* Create the silence detector */ - if (!sildet) { - ast_log(LOG_WARNING, "Unable to create silence detector :(\n"); - return -1; - } - ast_dsp_set_threshold(sildet, silencethreshold); - - /* Await silence... */ - f = NULL; - for(;;) { - res = ast_waitfor(chan, 2000); - if (!res) { - ast_log(LOG_WARNING, "One waitfor failed, trying another\n"); - /* Try one more time in case of masq */ - res = ast_waitfor(chan, 2000); - if (!res) { - ast_log(LOG_WARNING, "No audio available on %s??\n", chan->name); - res = -1; - } - } - - if (res < 0) { - f = NULL; - break; - } - f = ast_read(chan); - if (!f) - break; - if (f->frametype == AST_FRAME_VOICE) { - dspsilence = 0; - ast_dsp_silence(sildet, f, &dspsilence); - if (dspsilence) { - totalsilence = dspsilence; - time(&start); - } else { - totalsilence = 0; - } - - if (totalsilence >= maxsilence) { - if (option_verbose > 2) - ast_verbose(VERBOSE_PREFIX_3 "Exiting with %dms silence > %dms required\n", totalsilence, maxsilence); - /* Ended happily with silence */ - gotsilence = 1; - pbx_builtin_setvar_helper(chan, "WAITSTATUS", "SILENCE"); - ast_log(LOG_DEBUG, "WAITSTATUS was set to SILENCE\n"); - ast_frfree(f); - break; - } else if ( difftime(time(&now),start) >= maxsilence/1000 ) { - pbx_builtin_setvar_helper(chan, "WAITSTATUS", "TIMEOUT"); - ast_log(LOG_DEBUG, "WAITSTATUS was set to TIMEOUT\n"); - ast_frfree(f); - break; - } - } - ast_frfree(f); - } - if (rfmt && ast_set_read_format(chan, rfmt)) { - ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name); - } - ast_dsp_free(sildet); - return gotsilence; -} - -static int waitforsilence_exec(struct ast_channel *chan, void *data) -{ - int res = 1; - struct localuser *u; - int maxsilence = 1000; - int iterations = 1, i; - - LOCAL_USER_ADD(u); - - res = ast_answer(chan); /* Answer the channel */ - - if (!data || ((sscanf(data, "%d|%d", &maxsilence, &iterations) != 2) && - (sscanf(data, "%d", &maxsilence) != 1))) { - ast_log(LOG_WARNING, "Using default value of 1000ms, 1 iteration\n"); - } - - if (option_verbose > 2) - ast_verbose(VERBOSE_PREFIX_3 "Waiting %d time(s) for %d ms silence\n", iterations, maxsilence); - - res = 1; - for (i=0; (i<iterations) && (res == 1); i++) { - res = do_waiting(chan, maxsilence); - } - LOCAL_USER_REMOVE(u); - if (res > 0) - res = 0; - return res; -} - -int unload_module(void) -{ - int res; - - res = ast_unregister_application(app); - - STANDARD_HANGUP_LOCALUSERS; - - return res; -} - -int load_module(void) -{ - return ast_register_application(app, waitforsilence_exec, synopsis, descrip); -} - -char *description(void) -{ - return tdesc; -} - -int usecount(void) -{ - int res; - STANDARD_USECOUNT(res); - return res; -} - -char *key() -{ - return ASTERISK_GPL_KEY; -} - |