set properties for new files (i need to get this documented)

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@9960 f38db490-d61c-443f-a65b-d21fe96a405b

2 files changed, 436 insertions, 436 deletions

diff --git a/apps/app_amd.c b/apps/app_amd.c
index 8fc20c429..6ae81bd75 100644
--- a/apps/app_amd.c
+++ b/apps/app_amd.c
@@ -1,412 +1,412 @@
-/*

- * 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;

-}

-

+/*
+ * 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;
+}
+
diff --git a/configs/amd.conf.sample b/configs/amd.conf.sample
index ef9a88357..5e5072f69 100644
--- a/configs/amd.conf.sample
+++ b/configs/amd.conf.sample
@@ -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
+