[svn-commits] trunk r9960 - in /trunk: apps/app_amd.c configs/amd.conf.sample

svn-commits at lists.digium.com svn-commits at lists.digium.com
Tue Feb 14 11:44:19 MST 2006


Author: kpfleming
Date: Tue Feb 14 12:44:18 2006
New Revision: 9960

URL: http://svn.digium.com/view/asterisk?rev=9960&view=rev
Log:
set properties for new files (i need to get this documented)

Modified:
    trunk/apps/app_amd.c   (contents, props changed)
    trunk/configs/amd.conf.sample   (contents, props changed)

Modified: trunk/apps/app_amd.c
URL: http://svn.digium.com/view/asterisk/trunk/apps/app_amd.c?rev=9960&r1=9959&r2=9960&view=diff
==============================================================================
--- trunk/apps/app_amd.c (original)
+++ trunk/apps/app_amd.c Tue Feb 14 12:44:18 2006
@@ -1,412 +1,412 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 2003 - 2006, Aheeva Technology.
- *
- * Claude Klimos (claude.klimos at 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;
-}
-
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2003 - 2006, Aheeva Technology.
+ *
+ * Claude Klimos (claude.klimos at 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;
+}
+

Propchange: trunk/apps/app_amd.c
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: trunk/apps/app_amd.c
------------------------------------------------------------------------------
    svn:keywords = Author Date Id Revision

Modified: trunk/configs/amd.conf.sample
URL: http://svn.digium.com/view/asterisk/trunk/configs/amd.conf.sample?rev=9960&r1=9959&r2=9960&view=diff
==============================================================================
--- trunk/configs/amd.conf.sample (original)
+++ trunk/configs/amd.conf.sample Tue Feb 14 12:44:18 2006
@@ -1,24 +1,24 @@
-; initial_silence: Maximum silence duration before the greeting.
-; If exceeded then MACHINE.
-; greeting: Maximum length of a greeting. If exceeded then MACHINE.
-; after_greeting_silence: Silence after detecting a greeting.
-; If exceeded then HUMAN
-; total_analysis_time: Maximum time allowed for the algorithm to decide
-; on a HUMAN or PERSON
-; min_word_length: Minimum duration of Voice to considered as a word
-; between_words_silence: Minimum duration of silence after a word to consider
-; the audio what follows as a new word
-; maximum_number_of_words: Maximum number of words in the greeting.
-; If exceeded then MACHINE
-
-
-[AnsweringMachineDetector]
-initial_silence            = 2500
-greeting                   = 1500
-after_greeting_silence     = 300
-total_analysis_time        = 5000
-min_word_length            = 120
-between_words_silence      = 50
-maximum_number_of_words    = 2
-silence_threshold          = 256
-
+; initial_silence: Maximum silence duration before the greeting.
+; If exceeded then MACHINE.
+; greeting: Maximum length of a greeting. If exceeded then MACHINE.
+; after_greeting_silence: Silence after detecting a greeting.
+; If exceeded then HUMAN
+; total_analysis_time: Maximum time allowed for the algorithm to decide
+; on a HUMAN or PERSON
+; min_word_length: Minimum duration of Voice to considered as a word
+; between_words_silence: Minimum duration of silence after a word to consider
+; the audio what follows as a new word
+; maximum_number_of_words: Maximum number of words in the greeting.
+; If exceeded then MACHINE
+
+
+[AnsweringMachineDetector]
+initial_silence            = 2500
+greeting                   = 1500
+after_greeting_silence     = 300
+total_analysis_time        = 5000
+min_word_length            = 120
+between_words_silence      = 50
+maximum_number_of_words    = 2
+silence_threshold          = 256
+

Propchange: trunk/configs/amd.conf.sample
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: trunk/configs/amd.conf.sample
------------------------------------------------------------------------------
    svn:keywords = Author Date Id Revision



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