mirror of
https://github.com/asterisk/asterisk.git
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set properties for new files (i need to get this documented)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@9960 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
824
apps/app_amd.c
824
apps/app_amd.c
@@ -1,412 +1,412 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2003 - 2006, Aheeva Technology.
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*
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* Claude Klimos (claude.klimos@aheeva.com)
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*
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* Disclaimed to Digium
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
|
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "asterisk/module.h"
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#include "asterisk/lock.h"
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#include "asterisk/options.h"
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#include "asterisk/channel.h"
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#include "asterisk/dsp.h"
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#include "asterisk/pbx.h"
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#include "asterisk/config.h"
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#include "asterisk/app.h"
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static char *tdesc = "Answering Machine Detection Application";
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static char *app = "AMD";
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static char *synopsis = "Attempts to detect answering machines";
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static char *descrip =
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" AMD([initialSilence][|greeting][|afterGreetingSilence][|totalAnalysisTime]\n"
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" [|minimumWordLength][|betweenWordsSilence][|maximumNumberOfWords]\n"
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" [|silenceThreshold])\n"
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" This application attempts to detect answering machines at the beginning\n"
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" of outbound calls. Simply call this application after the call\n"
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" has been answered (outbound only, of course).\n"
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" When loaded, AMD reads amd.conf and uses the parameters specified as\n"
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" default values. Those default values get overwritten when calling AMD\n"
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" with parameters.\n"
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"- 'initialSilence' is the maximum silence duration before the greeting. If\n"
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" exceeded then MACHINE.\n"
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"- 'greeting' is the maximum length of a greeting. If exceeded then MACHINE.\n"
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"- 'afterGreetingSilence' is the silence after detecting a greeting.\n"
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" If exceeded then HUMAN.\n"
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"- 'totalAnalysisTime' is the maximum time allowed for the algorithm to decide\n"
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" on a HUMAN or MACHINE.\n"
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"- 'minimumWordLength'is the minimum duration of Voice to considered as a word.\n"
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"- 'betweenWordsSilence' is the minimum duration of silence after a word to \n"
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" consider the audio that follows as a new word.\n"
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"- 'maximumNumberOfWords'is the maximum number of words in the greeting. \n"
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" If exceeded then MACHINE.\n"
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"- 'silenceThreshold' is the silence threshold.\n"
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"This application sets the following channel variable upon completion:\n"
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" AMDSTATUS - This is the status of the answering machine detection.\n"
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" Possible values are:\n"
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" AMD_MACHINE | AMD_PERSON | AMD_NOTSURE | AMD_HANGUP\n"
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" AMDCAUSE - Indicates the cause that led to the conclusion.\n"
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" Possible values are:\n"
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" AMD_TOOLONG-<%d total_time>\n"
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" AMD_INITIALSILENCE-<%d silenceDuration>-<%d initialSilence>\n"
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" AMD_HUMAN-<%d silenceDuration>-<%d afterGreetingSilence>\n"
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" AMD_MAXWORDS-<%d wordsCount>-<%d maximumNumberOfWords>\n"
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" AMD_LONGGREETING-<%d voiceDuration>-<%d greeting>\n";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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#define STATE_IN_WORD 1
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#define STATE_IN_SILENCE 2
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/* Some default values for the algorithm parameters. These defaults will be overwritten from amd.conf */
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static int dfltInitialSilence = 2500;
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static int dfltGreeting = 1500;
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static int dfltAfterGreetingSilence = 800;
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static int dfltTotalAnalysisTime = 5000;
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static int dfltMinimumWordLength = 100;
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static int dfltBetweenWordsSilence = 50;
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static int dfltMaximumNumberOfWords = 3;
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static int dfltSilenceThreshold = 256;
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static void isAnsweringMachine(struct ast_channel *chan, void *data)
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{
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int res = 0;
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struct ast_frame *f = NULL;
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struct ast_dsp *silenceDetector; /* silence detector dsp */
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int dspsilence = 0;
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int readFormat;
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int inInitialSilence = 1;
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int inGreeting = 0;
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int voiceDuration = 0;
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int silenceDuration = 0;
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int iTotalTime = 0;
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int iWordsCount = 0;
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int currentState = STATE_IN_SILENCE;
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int previousState = STATE_IN_SILENCE;
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int consecutiveVoiceDuration = 0;
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char amdCause[256] = "";
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char amdStatus[256] = "";
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/* Lets set the initial values of the variables that will control the algorithm.
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The initial values are the default ones. If they are passed as arguments
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when invoking the application, then the default values will be overwritten
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by the ones passed as parameters. */
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int initialSilence = dfltInitialSilence;
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int greeting = dfltGreeting;
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int afterGreetingSilence = dfltAfterGreetingSilence;
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int totalAnalysisTime = dfltTotalAnalysisTime;
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int minimumWordLength = dfltMinimumWordLength;
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int betweenWordsSilence = dfltBetweenWordsSilence;
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int maximumNumberOfWords = dfltMaximumNumberOfWords;
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int silenceThreshold = dfltSilenceThreshold;
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char *parse;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(argInitialSilence);
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AST_APP_ARG(argGreeting);
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AST_APP_ARG(argAfterGreetingSilence);
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AST_APP_ARG(argTotalAnalysisTime);
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AST_APP_ARG(argMinimumWordLength);
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AST_APP_ARG(argBetweenWordsSilence);
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AST_APP_ARG(argMaximumNumberOfWords);
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AST_APP_ARG(argSilenceThreshold);
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);
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ast_verbose(VERBOSE_PREFIX_3 "AMD: %s %s %s (Fmt: %d)\n", chan->name ,chan->cid.cid_ani, chan->cid.cid_rdnis, chan->readformat);
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/* Lets parse the arguments. */
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if (ast_strlen_zero(data)) {
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ast_log(LOG_NOTICE, "AMD using the default parameters.\n");
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} else {
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/* Some arguments have been passed. Lets parse them and overwrite the defaults. */
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if (!(parse = ast_strdupa(data))) {
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ast_log(LOG_WARNING, "Memory allocation failure\n");
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pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
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pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
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return;
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}
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AST_STANDARD_APP_ARGS(args, parse);
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if (!ast_strlen_zero(args.argInitialSilence)) {
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initialSilence = atoi(args.argInitialSilence);
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}
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if (!ast_strlen_zero(args.argGreeting)) {
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greeting = atoi(args.argGreeting);
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}
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if (!ast_strlen_zero(args.argAfterGreetingSilence)) {
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afterGreetingSilence = atoi(args.argAfterGreetingSilence);
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}
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if (!ast_strlen_zero(args.argTotalAnalysisTime)) {
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totalAnalysisTime = atoi(args.argTotalAnalysisTime);
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}
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if (!ast_strlen_zero(args.argMinimumWordLength)) {
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minimumWordLength = atoi(args.argMinimumWordLength);
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}
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if (!ast_strlen_zero(args.argBetweenWordsSilence)) {
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betweenWordsSilence = atoi(args.argBetweenWordsSilence);
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}
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if (!ast_strlen_zero(args.argMaximumNumberOfWords)) {
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maximumNumberOfWords = atoi(args.argMaximumNumberOfWords);
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}
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if (!ast_strlen_zero(args.argSilenceThreshold)) {
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silenceThreshold = atoi(args.argSilenceThreshold);
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}
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}
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/* Now we're ready to roll! */
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ast_verbose(VERBOSE_PREFIX_3 "AMD: initialSilence [%d] greeting [%d] afterGreetingSilence [%d] "
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"totalAnalysisTime [%d] minimumWordLength [%d] betweenWordsSilence [%d] maximumNumberOfWords [%d] silenceThreshold [%d] \n",
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initialSilence, greeting, afterGreetingSilence, totalAnalysisTime,
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minimumWordLength, betweenWordsSilence, maximumNumberOfWords, silenceThreshold );
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readFormat = chan->readformat;
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res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
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if (res < 0 ) {
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ast_log(LOG_WARNING, "AMD: Channel [%s]. Unable to set to linear mode, giving up\n", chan->name );
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pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
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pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
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return;
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}
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silenceDetector = ast_dsp_new();
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if (!silenceDetector ) {
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ast_log(LOG_WARNING, "AMD: Channel [%s]. Unable to create silence detector :(\n", chan->name );
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pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
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pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
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return;
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}
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ast_dsp_set_threshold(silenceDetector, silenceThreshold );
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while (ast_waitfor(chan, -1) > -1)
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{
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f = ast_read(chan);
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if (!f ) {
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/* No Frame: Called Party Must Have Dropped */
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ast_verbose(VERBOSE_PREFIX_3 "AMD: HANGUP\n");
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ast_log(LOG_DEBUG, "Got hangup\n");
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strcpy(amdStatus , "AMD_HANGUP" );
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strcpy(amdCause , "" );
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break;
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}
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iTotalTime += 20;
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if (iTotalTime >= totalAnalysisTime ) {
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ast_verbose(VERBOSE_PREFIX_3 "AMD: Channel [%s]. Too long...\n", chan->name );
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ast_frfree(f);
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strcpy(amdStatus , "AMD_NOTSURE" );
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sprintf(amdCause , "AMD_TOOLONG-%d", iTotalTime );
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break;
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}
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if (f->frametype == AST_FRAME_VOICE ) {
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dspsilence = 0;
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ast_dsp_silence(silenceDetector, f, &dspsilence);
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if (dspsilence ) {
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silenceDuration = dspsilence;
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/* ast_verbose(VERBOSE_PREFIX_3 "AMD: %d SILENCE: silenceDuration:%d afterGreetingSilence:%d inGreeting:%d\n", currentState, silenceDuration, afterGreetingSilence, inGreeting ); */
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if (silenceDuration >= betweenWordsSilence ) {
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if (currentState != STATE_IN_SILENCE ) {
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previousState = currentState;
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ast_verbose(VERBOSE_PREFIX_3 "AMD: Changed state to STATE_IN_SILENCE\n");
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}
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currentState = STATE_IN_SILENCE;
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consecutiveVoiceDuration = 0;
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}
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if (inInitialSilence == 1 && silenceDuration >= initialSilence ) {
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ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: silenceDuration:%d initialSilence:%d\n",
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silenceDuration, initialSilence );
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ast_frfree(f);
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strcpy(amdStatus , "AMD_MACHINE" );
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sprintf(amdCause , "AMD_INITIALSILENCE-%d-%d", silenceDuration, initialSilence );
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break;
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}
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if (silenceDuration >= afterGreetingSilence && inGreeting == 1 ) {
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ast_verbose(VERBOSE_PREFIX_3 "AMD: HUMAN: silenceDuration:%d afterGreetingSilence:%d\n",
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silenceDuration, afterGreetingSilence );
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ast_frfree(f);
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strcpy(amdStatus , "AMD_PERSON" );
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sprintf(amdCause , "AMD_HUMAN-%d-%d", silenceDuration, afterGreetingSilence );
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break;
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}
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} else {
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consecutiveVoiceDuration += 20;
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voiceDuration += 20;
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/* ast_verbose(VERBOSE_PREFIX_3 "AMD: %d VOICE: ConsecutiveVoice:%d voiceDuration:%d inGreeting:%d\n", currentState, consecutiveVoiceDuration, voiceDuration, inGreeting ); */
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/* If I have enough consecutive voice to say that I am in a Word, I can only increment the
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number of words if my previous state was Silence, which means that I moved into a word. */
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if (consecutiveVoiceDuration >= minimumWordLength ) {
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if (currentState == STATE_IN_SILENCE ) {
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iWordsCount++;
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ast_verbose(VERBOSE_PREFIX_3 "AMD: Word detected. iWordsCount:%d\n", iWordsCount );
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previousState = currentState;
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currentState = STATE_IN_WORD;
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}
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}
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if (iWordsCount >= maximumNumberOfWords ) {
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ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: iWordsCount:%d\n", iWordsCount );
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ast_frfree(f);
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strcpy(amdStatus , "AMD_MACHINE" );
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sprintf(amdCause , "AMD_MAXWORDS-%d-%d", iWordsCount, maximumNumberOfWords );
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break;
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}
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if (inGreeting == 1 && voiceDuration >= greeting ) {
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ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: voiceDuration:%d greeting:%d\n",
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voiceDuration, greeting );
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ast_frfree(f);
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strcpy(amdStatus , "AMD_MACHINE" );
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sprintf(amdCause , "AMD_LONGGREETING-%d-%d", voiceDuration, greeting );
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break;
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}
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if (voiceDuration >= minimumWordLength ) {
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silenceDuration = 0;
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inInitialSilence = 0;
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inGreeting = 1;
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}
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}
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}
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ast_frfree(f);
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}
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pbx_builtin_setvar_helper(chan , "AMDSTATUS" , amdStatus );
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pbx_builtin_setvar_helper(chan , "AMDCAUSE" , amdCause );
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/* If We Started With A Valid Read Format, Return To It... */
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if (readFormat) {
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res = ast_set_read_format(chan, readFormat );
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if (res)
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ast_log(LOG_WARNING, "AMD: Unable to restore read format on '%s'\n", chan->name);
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}
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/* Free The Silence Detector DSP */
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ast_dsp_free(silenceDetector );
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return;
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}
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static int amd_exec(struct ast_channel *chan, void *data)
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{
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struct localuser *u;
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LOCAL_USER_ADD(u);
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isAnsweringMachine(chan, data);
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LOCAL_USER_REMOVE(u);
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return 0;
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}
|
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|
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static void load_config(void)
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{
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struct ast_config *cfg;
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char *cat;
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struct ast_variable *var;
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||||
cfg = ast_config_load("amd.conf");
|
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|
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if (!cfg) {
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ast_log(LOG_ERROR, "Configuration file amd.conf missing.\n");
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return;
|
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}
|
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cat = ast_category_browse(cfg, NULL);
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while (cat) {
|
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if (!strcasecmp(cat, "amd") ) {
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var = ast_variable_browse(cfg, cat);
|
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while (var) {
|
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if (!strcasecmp(var->name, "initial_silence")) {
|
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dfltInitialSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "greeting")) {
|
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dfltGreeting = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "after_greeting_silence")) {
|
||||
dfltAfterGreetingSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "silence_threshold")) {
|
||||
dfltSilenceThreshold = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "total_analysis_time")) {
|
||||
dfltTotalAnalysisTime = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "min_word_length")) {
|
||||
dfltMinimumWordLength = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "between_words_silence")) {
|
||||
dfltBetweenWordsSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "maximum_number_of_words")) {
|
||||
dfltMaximumNumberOfWords = atoi(var->value);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "%s: Cat:%s. Unknown keyword %s at line %d of amd.conf\n",
|
||||
app, cat, var->name, var->lineno);
|
||||
}
|
||||
var = var->next;
|
||||
}
|
||||
}
|
||||
cat = ast_category_browse(cfg, cat);
|
||||
}
|
||||
ast_config_destroy(cfg);
|
||||
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD defaults: initialSilence [%d] greeting [%d] afterGreetingSilence [%d] "
|
||||
"totalAnalysisTime [%d] minimumWordLength [%d] betweenWordsSilence [%d] maximumNumberOfWords [%d] silenceThreshold [%d] \n",
|
||||
dfltInitialSilence, dfltGreeting, dfltAfterGreetingSilence, dfltTotalAnalysisTime,
|
||||
dfltMinimumWordLength, dfltBetweenWordsSilence, dfltMaximumNumberOfWords, dfltSilenceThreshold );
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
int unload_module(void)
|
||||
{
|
||||
STANDARD_HANGUP_LOCALUSERS;
|
||||
return ast_unregister_application(app);
|
||||
}
|
||||
|
||||
int load_module(void)
|
||||
{
|
||||
load_config();
|
||||
return ast_register_application(app, amd_exec, synopsis, descrip);
|
||||
}
|
||||
|
||||
int reload(void)
|
||||
{
|
||||
load_config();
|
||||
return 0;
|
||||
}
|
||||
|
||||
char *description(void)
|
||||
{
|
||||
return tdesc;
|
||||
}
|
||||
|
||||
int usecount(void)
|
||||
{
|
||||
int res;
|
||||
STANDARD_USECOUNT(res);
|
||||
return res;
|
||||
}
|
||||
|
||||
char *key()
|
||||
{
|
||||
return ASTERISK_GPL_KEY;
|
||||
}
|
||||
|
||||
/*
|
||||
* Asterisk -- An open source telephony toolkit.
|
||||
*
|
||||
* Copyright (C) 2003 - 2006, Aheeva Technology.
|
||||
*
|
||||
* Claude Klimos (claude.klimos@aheeva.com)
|
||||
*
|
||||
* Disclaimed to Digium
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "asterisk/module.h"
|
||||
#include "asterisk/lock.h"
|
||||
#include "asterisk/options.h"
|
||||
#include "asterisk/channel.h"
|
||||
#include "asterisk/dsp.h"
|
||||
#include "asterisk/pbx.h"
|
||||
#include "asterisk/config.h"
|
||||
#include "asterisk/app.h"
|
||||
|
||||
|
||||
static char *tdesc = "Answering Machine Detection Application";
|
||||
static char *app = "AMD";
|
||||
static char *synopsis = "Attempts to detect answering machines";
|
||||
static char *descrip =
|
||||
" AMD([initialSilence][|greeting][|afterGreetingSilence][|totalAnalysisTime]\n"
|
||||
" [|minimumWordLength][|betweenWordsSilence][|maximumNumberOfWords]\n"
|
||||
" [|silenceThreshold])\n"
|
||||
" This application attempts to detect answering machines at the beginning\n"
|
||||
" of outbound calls. Simply call this application after the call\n"
|
||||
" has been answered (outbound only, of course).\n"
|
||||
" When loaded, AMD reads amd.conf and uses the parameters specified as\n"
|
||||
" default values. Those default values get overwritten when calling AMD\n"
|
||||
" with parameters.\n"
|
||||
"- 'initialSilence' is the maximum silence duration before the greeting. If\n"
|
||||
" exceeded then MACHINE.\n"
|
||||
"- 'greeting' is the maximum length of a greeting. If exceeded then MACHINE.\n"
|
||||
"- 'afterGreetingSilence' is the silence after detecting a greeting.\n"
|
||||
" If exceeded then HUMAN.\n"
|
||||
"- 'totalAnalysisTime' is the maximum time allowed for the algorithm to decide\n"
|
||||
" on a HUMAN or MACHINE.\n"
|
||||
"- 'minimumWordLength'is the minimum duration of Voice to considered as a word.\n"
|
||||
"- 'betweenWordsSilence' is the minimum duration of silence after a word to \n"
|
||||
" consider the audio that follows as a new word.\n"
|
||||
"- 'maximumNumberOfWords'is the maximum number of words in the greeting. \n"
|
||||
" If exceeded then MACHINE.\n"
|
||||
"- 'silenceThreshold' is the silence threshold.\n"
|
||||
"This application sets the following channel variable upon completion:\n"
|
||||
" AMDSTATUS - This is the status of the answering machine detection.\n"
|
||||
" Possible values are:\n"
|
||||
" AMD_MACHINE | AMD_PERSON | AMD_NOTSURE | AMD_HANGUP\n"
|
||||
" AMDCAUSE - Indicates the cause that led to the conclusion.\n"
|
||||
" Possible values are:\n"
|
||||
" AMD_TOOLONG-<%d total_time>\n"
|
||||
" AMD_INITIALSILENCE-<%d silenceDuration>-<%d initialSilence>\n"
|
||||
" AMD_HUMAN-<%d silenceDuration>-<%d afterGreetingSilence>\n"
|
||||
" AMD_MAXWORDS-<%d wordsCount>-<%d maximumNumberOfWords>\n"
|
||||
" AMD_LONGGREETING-<%d voiceDuration>-<%d greeting>\n";
|
||||
|
||||
|
||||
STANDARD_LOCAL_USER;
|
||||
|
||||
LOCAL_USER_DECL;
|
||||
|
||||
#define STATE_IN_WORD 1
|
||||
#define STATE_IN_SILENCE 2
|
||||
|
||||
/* Some default values for the algorithm parameters. These defaults will be overwritten from amd.conf */
|
||||
static int dfltInitialSilence = 2500;
|
||||
static int dfltGreeting = 1500;
|
||||
static int dfltAfterGreetingSilence = 800;
|
||||
static int dfltTotalAnalysisTime = 5000;
|
||||
static int dfltMinimumWordLength = 100;
|
||||
static int dfltBetweenWordsSilence = 50;
|
||||
static int dfltMaximumNumberOfWords = 3;
|
||||
static int dfltSilenceThreshold = 256;
|
||||
|
||||
static void isAnsweringMachine(struct ast_channel *chan, void *data)
|
||||
{
|
||||
int res = 0;
|
||||
|
||||
struct ast_frame *f = NULL;
|
||||
|
||||
struct ast_dsp *silenceDetector; /* silence detector dsp */
|
||||
int dspsilence = 0;
|
||||
int readFormat;
|
||||
|
||||
int inInitialSilence = 1;
|
||||
int inGreeting = 0;
|
||||
int voiceDuration = 0;
|
||||
int silenceDuration = 0;
|
||||
int iTotalTime = 0;
|
||||
int iWordsCount = 0;
|
||||
int currentState = STATE_IN_SILENCE;
|
||||
int previousState = STATE_IN_SILENCE;
|
||||
int consecutiveVoiceDuration = 0;
|
||||
char amdCause[256] = "";
|
||||
char amdStatus[256] = "";
|
||||
|
||||
/* Lets set the initial values of the variables that will control the algorithm.
|
||||
The initial values are the default ones. If they are passed as arguments
|
||||
when invoking the application, then the default values will be overwritten
|
||||
by the ones passed as parameters. */
|
||||
int initialSilence = dfltInitialSilence;
|
||||
int greeting = dfltGreeting;
|
||||
int afterGreetingSilence = dfltAfterGreetingSilence;
|
||||
int totalAnalysisTime = dfltTotalAnalysisTime;
|
||||
int minimumWordLength = dfltMinimumWordLength;
|
||||
int betweenWordsSilence = dfltBetweenWordsSilence;
|
||||
int maximumNumberOfWords = dfltMaximumNumberOfWords;
|
||||
int silenceThreshold = dfltSilenceThreshold;
|
||||
|
||||
char *parse;
|
||||
AST_DECLARE_APP_ARGS(args,
|
||||
AST_APP_ARG(argInitialSilence);
|
||||
AST_APP_ARG(argGreeting);
|
||||
AST_APP_ARG(argAfterGreetingSilence);
|
||||
AST_APP_ARG(argTotalAnalysisTime);
|
||||
AST_APP_ARG(argMinimumWordLength);
|
||||
AST_APP_ARG(argBetweenWordsSilence);
|
||||
AST_APP_ARG(argMaximumNumberOfWords);
|
||||
AST_APP_ARG(argSilenceThreshold);
|
||||
);
|
||||
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: %s %s %s (Fmt: %d)\n", chan->name ,chan->cid.cid_ani, chan->cid.cid_rdnis, chan->readformat);
|
||||
|
||||
/* Lets parse the arguments. */
|
||||
if (ast_strlen_zero(data)) {
|
||||
ast_log(LOG_NOTICE, "AMD using the default parameters.\n");
|
||||
} else {
|
||||
/* Some arguments have been passed. Lets parse them and overwrite the defaults. */
|
||||
if (!(parse = ast_strdupa(data))) {
|
||||
ast_log(LOG_WARNING, "Memory allocation failure\n");
|
||||
pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
|
||||
pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
|
||||
return;
|
||||
}
|
||||
|
||||
AST_STANDARD_APP_ARGS(args, parse);
|
||||
|
||||
if (!ast_strlen_zero(args.argInitialSilence)) {
|
||||
initialSilence = atoi(args.argInitialSilence);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argGreeting)) {
|
||||
greeting = atoi(args.argGreeting);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argAfterGreetingSilence)) {
|
||||
afterGreetingSilence = atoi(args.argAfterGreetingSilence);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argTotalAnalysisTime)) {
|
||||
totalAnalysisTime = atoi(args.argTotalAnalysisTime);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argMinimumWordLength)) {
|
||||
minimumWordLength = atoi(args.argMinimumWordLength);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argBetweenWordsSilence)) {
|
||||
betweenWordsSilence = atoi(args.argBetweenWordsSilence);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argMaximumNumberOfWords)) {
|
||||
maximumNumberOfWords = atoi(args.argMaximumNumberOfWords);
|
||||
}
|
||||
if (!ast_strlen_zero(args.argSilenceThreshold)) {
|
||||
silenceThreshold = atoi(args.argSilenceThreshold);
|
||||
}
|
||||
}
|
||||
|
||||
/* Now we're ready to roll! */
|
||||
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: initialSilence [%d] greeting [%d] afterGreetingSilence [%d] "
|
||||
"totalAnalysisTime [%d] minimumWordLength [%d] betweenWordsSilence [%d] maximumNumberOfWords [%d] silenceThreshold [%d] \n",
|
||||
initialSilence, greeting, afterGreetingSilence, totalAnalysisTime,
|
||||
minimumWordLength, betweenWordsSilence, maximumNumberOfWords, silenceThreshold );
|
||||
|
||||
readFormat = chan->readformat;
|
||||
res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
|
||||
if (res < 0 ) {
|
||||
ast_log(LOG_WARNING, "AMD: Channel [%s]. Unable to set to linear mode, giving up\n", chan->name );
|
||||
pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
|
||||
pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
|
||||
return;
|
||||
}
|
||||
|
||||
silenceDetector = ast_dsp_new();
|
||||
if (!silenceDetector ) {
|
||||
ast_log(LOG_WARNING, "AMD: Channel [%s]. Unable to create silence detector :(\n", chan->name );
|
||||
pbx_builtin_setvar_helper(chan , "AMDSTATUS" , "" );
|
||||
pbx_builtin_setvar_helper(chan , "AMDCAUSE" , "" );
|
||||
return;
|
||||
}
|
||||
ast_dsp_set_threshold(silenceDetector, silenceThreshold );
|
||||
|
||||
while (ast_waitfor(chan, -1) > -1)
|
||||
{
|
||||
f = ast_read(chan);
|
||||
if (!f ) {
|
||||
/* No Frame: Called Party Must Have Dropped */
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: HANGUP\n");
|
||||
ast_log(LOG_DEBUG, "Got hangup\n");
|
||||
strcpy(amdStatus , "AMD_HANGUP" );
|
||||
strcpy(amdCause , "" );
|
||||
break;
|
||||
}
|
||||
iTotalTime += 20;
|
||||
if (iTotalTime >= totalAnalysisTime ) {
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: Channel [%s]. Too long...\n", chan->name );
|
||||
ast_frfree(f);
|
||||
strcpy(amdStatus , "AMD_NOTSURE" );
|
||||
sprintf(amdCause , "AMD_TOOLONG-%d", iTotalTime );
|
||||
break;
|
||||
}
|
||||
if (f->frametype == AST_FRAME_VOICE ) {
|
||||
dspsilence = 0;
|
||||
ast_dsp_silence(silenceDetector, f, &dspsilence);
|
||||
if (dspsilence ) {
|
||||
silenceDuration = dspsilence;
|
||||
/* ast_verbose(VERBOSE_PREFIX_3 "AMD: %d SILENCE: silenceDuration:%d afterGreetingSilence:%d inGreeting:%d\n", currentState, silenceDuration, afterGreetingSilence, inGreeting ); */
|
||||
if (silenceDuration >= betweenWordsSilence ) {
|
||||
if (currentState != STATE_IN_SILENCE ) {
|
||||
previousState = currentState;
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: Changed state to STATE_IN_SILENCE\n");
|
||||
}
|
||||
currentState = STATE_IN_SILENCE;
|
||||
consecutiveVoiceDuration = 0;
|
||||
}
|
||||
if (inInitialSilence == 1 && silenceDuration >= initialSilence ) {
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: silenceDuration:%d initialSilence:%d\n",
|
||||
silenceDuration, initialSilence );
|
||||
ast_frfree(f);
|
||||
strcpy(amdStatus , "AMD_MACHINE" );
|
||||
sprintf(amdCause , "AMD_INITIALSILENCE-%d-%d", silenceDuration, initialSilence );
|
||||
break;
|
||||
}
|
||||
|
||||
if (silenceDuration >= afterGreetingSilence && inGreeting == 1 ) {
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: HUMAN: silenceDuration:%d afterGreetingSilence:%d\n",
|
||||
silenceDuration, afterGreetingSilence );
|
||||
ast_frfree(f);
|
||||
strcpy(amdStatus , "AMD_PERSON" );
|
||||
sprintf(amdCause , "AMD_HUMAN-%d-%d", silenceDuration, afterGreetingSilence );
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
consecutiveVoiceDuration += 20;
|
||||
voiceDuration += 20;
|
||||
/* ast_verbose(VERBOSE_PREFIX_3 "AMD: %d VOICE: ConsecutiveVoice:%d voiceDuration:%d inGreeting:%d\n", currentState, consecutiveVoiceDuration, voiceDuration, inGreeting ); */
|
||||
|
||||
/* If I have enough consecutive voice to say that I am in a Word, I can only increment the
|
||||
number of words if my previous state was Silence, which means that I moved into a word. */
|
||||
if (consecutiveVoiceDuration >= minimumWordLength ) {
|
||||
if (currentState == STATE_IN_SILENCE ) {
|
||||
iWordsCount++;
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: Word detected. iWordsCount:%d\n", iWordsCount );
|
||||
previousState = currentState;
|
||||
currentState = STATE_IN_WORD;
|
||||
}
|
||||
}
|
||||
|
||||
if (iWordsCount >= maximumNumberOfWords ) {
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: iWordsCount:%d\n", iWordsCount );
|
||||
ast_frfree(f);
|
||||
strcpy(amdStatus , "AMD_MACHINE" );
|
||||
sprintf(amdCause , "AMD_MAXWORDS-%d-%d", iWordsCount, maximumNumberOfWords );
|
||||
break;
|
||||
}
|
||||
|
||||
if (inGreeting == 1 && voiceDuration >= greeting ) {
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: voiceDuration:%d greeting:%d\n",
|
||||
voiceDuration, greeting );
|
||||
ast_frfree(f);
|
||||
strcpy(amdStatus , "AMD_MACHINE" );
|
||||
sprintf(amdCause , "AMD_LONGGREETING-%d-%d", voiceDuration, greeting );
|
||||
break;
|
||||
}
|
||||
if (voiceDuration >= minimumWordLength ) {
|
||||
silenceDuration = 0;
|
||||
inInitialSilence = 0;
|
||||
inGreeting = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
ast_frfree(f);
|
||||
}
|
||||
|
||||
pbx_builtin_setvar_helper(chan , "AMDSTATUS" , amdStatus );
|
||||
pbx_builtin_setvar_helper(chan , "AMDCAUSE" , amdCause );
|
||||
|
||||
/* If We Started With A Valid Read Format, Return To It... */
|
||||
if (readFormat) {
|
||||
res = ast_set_read_format(chan, readFormat );
|
||||
if (res)
|
||||
ast_log(LOG_WARNING, "AMD: Unable to restore read format on '%s'\n", chan->name);
|
||||
}
|
||||
|
||||
/* Free The Silence Detector DSP */
|
||||
ast_dsp_free(silenceDetector );
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
static int amd_exec(struct ast_channel *chan, void *data)
|
||||
{
|
||||
struct localuser *u;
|
||||
|
||||
LOCAL_USER_ADD(u);
|
||||
isAnsweringMachine(chan, data);
|
||||
LOCAL_USER_REMOVE(u);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void load_config(void)
|
||||
{
|
||||
struct ast_config *cfg;
|
||||
char *cat;
|
||||
struct ast_variable *var;
|
||||
|
||||
cfg = ast_config_load("amd.conf");
|
||||
|
||||
if (!cfg) {
|
||||
ast_log(LOG_ERROR, "Configuration file amd.conf missing.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
cat = ast_category_browse(cfg, NULL);
|
||||
|
||||
while (cat) {
|
||||
if (!strcasecmp(cat, "amd") ) {
|
||||
var = ast_variable_browse(cfg, cat);
|
||||
while (var) {
|
||||
if (!strcasecmp(var->name, "initial_silence")) {
|
||||
dfltInitialSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "greeting")) {
|
||||
dfltGreeting = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "after_greeting_silence")) {
|
||||
dfltAfterGreetingSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "silence_threshold")) {
|
||||
dfltSilenceThreshold = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "total_analysis_time")) {
|
||||
dfltTotalAnalysisTime = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "min_word_length")) {
|
||||
dfltMinimumWordLength = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "between_words_silence")) {
|
||||
dfltBetweenWordsSilence = atoi(var->value);
|
||||
} else if (!strcasecmp(var->name, "maximum_number_of_words")) {
|
||||
dfltMaximumNumberOfWords = atoi(var->value);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "%s: Cat:%s. Unknown keyword %s at line %d of amd.conf\n",
|
||||
app, cat, var->name, var->lineno);
|
||||
}
|
||||
var = var->next;
|
||||
}
|
||||
}
|
||||
cat = ast_category_browse(cfg, cat);
|
||||
}
|
||||
ast_config_destroy(cfg);
|
||||
|
||||
ast_verbose(VERBOSE_PREFIX_3 "AMD defaults: initialSilence [%d] greeting [%d] afterGreetingSilence [%d] "
|
||||
"totalAnalysisTime [%d] minimumWordLength [%d] betweenWordsSilence [%d] maximumNumberOfWords [%d] silenceThreshold [%d] \n",
|
||||
dfltInitialSilence, dfltGreeting, dfltAfterGreetingSilence, dfltTotalAnalysisTime,
|
||||
dfltMinimumWordLength, dfltBetweenWordsSilence, dfltMaximumNumberOfWords, dfltSilenceThreshold );
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
int unload_module(void)
|
||||
{
|
||||
STANDARD_HANGUP_LOCALUSERS;
|
||||
return ast_unregister_application(app);
|
||||
}
|
||||
|
||||
int load_module(void)
|
||||
{
|
||||
load_config();
|
||||
return ast_register_application(app, amd_exec, synopsis, descrip);
|
||||
}
|
||||
|
||||
int reload(void)
|
||||
{
|
||||
load_config();
|
||||
return 0;
|
||||
}
|
||||
|
||||
char *description(void)
|
||||
{
|
||||
return tdesc;
|
||||
}
|
||||
|
||||
int usecount(void)
|
||||
{
|
||||
int res;
|
||||
STANDARD_USECOUNT(res);
|
||||
return res;
|
||||
}
|
||||
|
||||
char *key()
|
||||
{
|
||||
return ASTERISK_GPL_KEY;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user