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asterisk
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Make this module fit the guidelines better

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@42109 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.4
Joshua Colp 19 years ago
parent e77c51f5c6
commit ca2b4d407a
1 changed files with 103 additions and 115 deletions
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218
apps/app_amd.c
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@ -88,26 +88,21 @@ static int dfltSilenceThreshold = 256;
static void isAnsweringMachine(struct ast_channel *chan, void *data)
{
int res = 0, ret = 0;
int res = 0;
struct ast_frame *f = NULL;
struct ast_dsp *silenceDetector; /* silence detector dsp */
int dspsilence = 0;
int readFormat;
int framelength;
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;
struct ast_dsp *silenceDetector = NULL;
int dspsilence = 0, readFormat, framelength;
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] = "";
char amdCause[256] = "", amdStatus[256] = "";
char *parse = ast_strdupa(data);
/* 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
@ -122,7 +117,6 @@ static void isAnsweringMachine(struct ast_channel *chan, void *data)
int maximumNumberOfWords = dfltMaximumNumberOfWords;
int silenceThreshold = dfltSilenceThreshold;
char *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(argInitialSilence);
AST_APP_ARG(argGreeting);
@ -133,98 +127,92 @@ static void isAnsweringMachine(struct ast_channel *chan, void *data)
AST_APP_ARG(argMaximumNumberOfWords);
AST_APP_ARG(argSilenceThreshold);
);
if (option_verbose > 2)
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 {
if (!ast_strlen_zero(parse)) {
/* Some arguments have been passed. Lets parse them and overwrite the defaults. */
parse = ast_strdupa(data);
AST_STANDARD_APP_ARGS(args, parse);
if (!ast_strlen_zero(args.argInitialSilence)) {
if (!ast_strlen_zero(args.argInitialSilence))
initialSilence = atoi(args.argInitialSilence);
}
if (!ast_strlen_zero(args.argGreeting)) {
if (!ast_strlen_zero(args.argGreeting))
greeting = atoi(args.argGreeting);
}
if (!ast_strlen_zero(args.argAfterGreetingSilence)) {
if (!ast_strlen_zero(args.argAfterGreetingSilence))
afterGreetingSilence = atoi(args.argAfterGreetingSilence);
}
if (!ast_strlen_zero(args.argTotalAnalysisTime)) {
if (!ast_strlen_zero(args.argTotalAnalysisTime))
totalAnalysisTime = atoi(args.argTotalAnalysisTime);
}
if (!ast_strlen_zero(args.argMinimumWordLength)) {
if (!ast_strlen_zero(args.argMinimumWordLength))
minimumWordLength = atoi(args.argMinimumWordLength);
}
if (!ast_strlen_zero(args.argBetweenWordsSilence)) {
if (!ast_strlen_zero(args.argBetweenWordsSilence))
betweenWordsSilence = atoi(args.argBetweenWordsSilence);
}
if (!ast_strlen_zero(args.argMaximumNumberOfWords)) {
if (!ast_strlen_zero(args.argMaximumNumberOfWords))
maximumNumberOfWords = atoi(args.argMaximumNumberOfWords);
}
if (!ast_strlen_zero(args.argSilenceThreshold)) {
if (!ast_strlen_zero(args.argSilenceThreshold))
silenceThreshold = atoi(args.argSilenceThreshold);
}
}
} else
ast_log(LOG_NOTICE, "AMD using the default parameters.\n");
/* Now we're ready to roll! */
if (option_verbose > 2)
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 );
/* Set read format to signed linear so we get signed linear frames in */
readFormat = chan->readformat;
res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
if (res < 0 ) {
if (ast_set_read_format(chan, AST_FORMAT_SLINEAR) < 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" , "" );
pbx_builtin_setvar_helper(chan , "AMDSTATUS", "");
pbx_builtin_setvar_helper(chan , "AMDCAUSE", "");
return;
}
silenceDetector = ast_dsp_new();
if (!silenceDetector ) {
/* Create a new DSP that will detect the silence */
if (!(silenceDetector = ast_dsp_new())) {
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" , "" );
pbx_builtin_setvar_helper(chan , "AMDSTATUS", "");
pbx_builtin_setvar_helper(chan , "AMDCAUSE", "");
return;
}
ast_dsp_set_threshold(silenceDetector, silenceThreshold );
while ((ret = ast_waitfor(chan, totalAnalysisTime)))
{
if (ret < 0 || !(f = ast_read(chan))) {
/* No Frame OR Error on ast_waitfor : Called Party Must Have Dropped */
/* Set silence threshold to specified value */
ast_dsp_set_threshold(silenceDetector, silenceThreshold);
/* Now we go into a loop waiting for frames from the channel */
while ((res = ast_waitfor(chan, totalAnalysisTime)) > -1) {
/* If we fail to read in a frame, that means they hung up */
if (!(f = ast_read(chan))) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: HANGUP\n");
if (option_debug)
ast_log(LOG_DEBUG, "Got hangup\n");
strcpy(amdStatus , "HANGUP" );
strcpy(amdCause , "" );
strcpy(amdStatus, "HANGUP");
break;
}
if (f->frametype == AST_FRAME_VOICE ) {
if (f->frametype == AST_FRAME_VOICE) {
/* If the total time exceeds the analysis time then give up as we are not too sure */
framelength = (ast_codec_get_samples(f) / DEFAULT_SAMPLES_PER_MS);
iTotalTime += framelength;
if (iTotalTime >= totalAnalysisTime ) {
if (iTotalTime >= totalAnalysisTime) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: Channel [%s]. Too long...\n", chan->name );
ast_frfree(f);
strcpy(amdStatus , "NOTSURE" );
sprintf(amdCause , "TOOLONG-%d", iTotalTime );
strcpy(amdStatus , "NOTSURE");
sprintf(amdCause , "TOOLONG-%d", iTotalTime);
break;
}
/* Feed the frame of audio into the silence detector and see if we get a result */
dspsilence = 0;
ast_dsp_silence(silenceDetector, f, &dspsilence);
if (dspsilence ) {
if (dspsilence) {
silenceDuration = dspsilence;
if (silenceDuration >= betweenWordsSilence ) {
if (silenceDuration >= betweenWordsSilence) {
if (currentState != STATE_IN_SILENCE ) {
previousState = currentState;
if (option_verbose > 2)
@ -233,87 +221,88 @@ static void isAnsweringMachine(struct ast_channel *chan, void *data)
currentState = STATE_IN_SILENCE;
consecutiveVoiceDuration = 0;
}
if (inInitialSilence == 1 && silenceDuration >= initialSilence ) {
if (inInitialSilence == 1 && silenceDuration >= initialSilence) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: silenceDuration:%d initialSilence:%d\n",
silenceDuration, initialSilence );
silenceDuration, initialSilence);
ast_frfree(f);
strcpy(amdStatus , "MACHINE" );
sprintf(amdCause , "INITIALSILENCE-%d-%d", silenceDuration, initialSilence );
strcpy(amdStatus , "MACHINE");
sprintf(amdCause , "INITIALSILENCE-%d-%d", silenceDuration, initialSilence);
break;
}
if (silenceDuration >= afterGreetingSilence && inGreeting == 1 ) {
if (silenceDuration >= afterGreetingSilence && inGreeting == 1) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: HUMAN: silenceDuration:%d afterGreetingSilence:%d\n",
silenceDuration, afterGreetingSilence );
silenceDuration, afterGreetingSilence);
ast_frfree(f);
strcpy(amdStatus , "HUMAN" );
sprintf(amdCause , "HUMAN-%d-%d", silenceDuration, afterGreetingSilence );
strcpy(amdStatus , "HUMAN");
sprintf(amdCause , "HUMAN-%d-%d", silenceDuration, afterGreetingSilence);
break;
}
} else {
consecutiveVoiceDuration += framelength;
voiceDuration += framelength;
/* 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++;
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: Word detected. iWordsCount:%d\n", iWordsCount );
previousState = currentState;
currentState = STATE_IN_WORD;
}
number of words if my previous state was Silence, which means that I moved into a word. */
if (consecutiveVoiceDuration >= minimumWordLength && currentState == STATE_IN_SILENCE) {
iWordsCount++;
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: Word detected. iWordsCount:%d\n", iWordsCount);
previousState = currentState;
currentState = STATE_IN_WORD;
}
if (iWordsCount >= maximumNumberOfWords ) {
if (iWordsCount >= maximumNumberOfWords) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: iWordsCount:%d\n", iWordsCount );
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: iWordsCount:%d\n", iWordsCount);
ast_frfree(f);
strcpy(amdStatus , "MACHINE" );
sprintf(amdCause , "MAXWORDS-%d-%d", iWordsCount, maximumNumberOfWords );
strcpy(amdStatus , "MACHINE");
sprintf(amdCause , "MAXWORDS-%d-%d", iWordsCount, maximumNumberOfWords);
break;
}
if (inGreeting == 1 && voiceDuration >= greeting ) {
if (inGreeting == 1 && voiceDuration >= greeting) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: voiceDuration:%d greeting:%d\n", voiceDuration, greeting);
ast_frfree(f);
strcpy(amdStatus , "MACHINE" );
sprintf(amdCause , "LONGGREETING-%d-%d", voiceDuration, greeting );
ast_verbose(VERBOSE_PREFIX_3 "AMD: ANSWERING MACHINE: voiceDuration:%d greeting:%d\n", voiceDuration, greeting);
ast_frfree(f);
strcpy(amdStatus , "MACHINE");
sprintf(amdCause , "LONGGREETING-%d-%d", voiceDuration, greeting);
break;
}
if (voiceDuration >= minimumWordLength ) {
silenceDuration = 0;
inInitialSilence = 0;
inGreeting = 1;
}
}
}
ast_frfree(f);
}
if (!ret) {
if (!res) {
/* It took too long to get a frame back. Giving up. */
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "AMD: Channel [%s]. Too long...\n", chan->name );
strcpy(amdStatus , "NOTSURE" );
sprintf(amdCause , "TOOLONG-%d", iTotalTime );
ast_verbose(VERBOSE_PREFIX_3 "AMD: Channel [%s]. Too long...\n", chan->name);
strcpy(amdStatus , "NOTSURE");
sprintf(amdCause , "TOOLONG-%d", iTotalTime);
}
pbx_builtin_setvar_helper(chan , "AMDSTATUS" , amdStatus );
pbx_builtin_setvar_helper(chan , "AMDCAUSE" , amdCause );
/* Set the status and cause on the channel */
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 && chan->_state == AST_STATE_UP) {
res = ast_set_read_format(chan, readFormat );
if (res)
ast_log(LOG_WARNING, "AMD: Unable to restore read format on '%s'\n", chan->name);
}
/* Restore channel read format */
if (readFormat && ast_set_read_format(chan, readFormat))
ast_log(LOG_WARNING, "AMD: Unable to restore read format on '%s'\n", chan->name);
/* Free The Silence Detector DSP */
ast_dsp_free(silenceDetector );
/* Free the DSP used to detect silence */
ast_dsp_free(silenceDetector);
return;
}
@ -321,7 +310,7 @@ static void isAnsweringMachine(struct ast_channel *chan, void *data)
static int amd_exec(struct ast_channel *chan, void *data)
{
struct ast_module_user *u;
struct ast_module_user *u = NULL;
u = ast_module_user_add(chan);
isAnsweringMachine(chan, data);
@ -332,13 +321,11 @@ static int amd_exec(struct ast_channel *chan, void *data)
static void load_config(void)
{
struct ast_config *cfg;
char *cat;
struct ast_variable *var;
struct ast_config *cfg = NULL;
char *cat = NULL;
struct ast_variable *var = NULL;
cfg = ast_config_load("amd.conf");
if (!cfg) {
if (!(cfg = ast_config_load("amd.conf"))) {
ast_log(LOG_ERROR, "Configuration file amd.conf missing.\n");
return;
}
@ -374,6 +361,7 @@ static void load_config(void)
}
cat = ast_category_browse(cfg, cat);
}
ast_config_destroy(cfg);
if (option_verbose > 2)

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