*** new features for alsabat ***

index 5eaa25b..5775748 100644
@@ -377,12 +377,6 @@ void *playback_alsa(struct bat *bat)
 	retval_play = 0;
 	memset(&sndpcm, 0, sizeof(sndpcm));
 
-	if (bat->playback.device == NULL) {
-		fprintf(bat->err, _("No PCM device for playback: exit\n"));
-		retval_play = 1;
-		goto exit1;
-	}
-
 	err = snd_pcm_open(&sndpcm.handle, bat->playback.device,
 			SND_PCM_STREAM_PLAYBACK, 0);
 	if (err != 0) {

@@ -533,12 +527,6 @@ void *record_alsa(struct bat *bat)
 	retval_record = 0;
 	memset(&sndpcm, 0, sizeof(sndpcm));
 
-	if (bat->capture.device == NULL) {
-		fprintf(bat->err, _("No PCM device for capture: exit\n"));
-		retval_record = 1;
-		goto exit1;
-	}
-
 	err = snd_pcm_open(&sndpcm.handle, bat->capture.device,
 			SND_PCM_STREAM_CAPTURE, 0);
 	if (err != 0) {

index ddb60b7..9c637f2 100644
@@ -473,6 +473,10 @@ static int bat_init(struct bat *bat)
 			return err;
 	}
 
+	/* Set default playback and capture devices */
+	if (bat->playback.device == NULL && bat->capture.device == NULL)
+		bat->playback.device = bat->capture.device = DEFAULT_DEV_NAME;
+
 	/* Determine capture file */
 	if (bat->local) {
 		bat->capture.file = bat->playback.file;

index 7346d9f..5417c0e 100644
@@ -16,6 +16,7 @@
 #include <alsa/asoundlib.h>
 
 #define TEMP_RECORD_FILE_NAME		"/tmp/bat.wav.XXXXXX"
+#define DEFAULT_DEV_NAME		"default"
 
 #define OPT_BASE			300
 #define OPT_LOG				(OPT_BASE + 1)

index 9c637f2..85ec5aa 100644
@@ -33,7 +33,9 @@
 
 #include "alsa.h"
 #include "convert.h"
+#ifdef HAVE_LIBFFTW3
 #include "analyze.h"
+#endif
 
 static int get_duration(struct bat *bat)
 {

@@ -289,6 +291,7 @@ _("Usage: alsabat [-options]...\n"
 "      --file=#           file for playback\n"
 "      --saveplay=#       file that storing playback content, for debug\n"
 "      --local            internal loop, set to bypass pcm hardware devices\n"
+"      --standalone       standalone mode, to bypass analysis\n"
 ));
 	fprintf(bat->log, _("Recognized sample formats are: %s %s %s %s\n"),
 			snd_pcm_format_name(SND_PCM_FORMAT_U8),

@@ -339,6 +342,7 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[])
 		{"file",     1, 0, OPT_READFILE},
 		{"saveplay", 1, 0, OPT_SAVEPLAY},
 		{"local",    0, 0, OPT_LOCAL},
+		{"standalone", 0, 0, OPT_STANDALONE},
 		{0, 0, 0, 0}
 	};
 

@@ -357,6 +361,9 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[])
 		case OPT_LOCAL:
 			bat->local = true;
 			break;
+		case OPT_STANDALONE:
+			bat->standalone = true;
+			break;
 		case 'D':
 			if (bat->playback.device == NULL)
 				bat->playback.device = optarg;

@@ -601,7 +608,12 @@ int main(int argc, char *argv[])
 		test_loopback(&bat);
 
 analyze:
-	err = analyze_capture(&bat);
+#ifdef HAVE_LIBFFTW3
+	if (!bat.standalone)
+		err = analyze_capture(&bat);
+#else
+	fprintf(bat.log, _("No libfftw3 library. Exit without analysis.\n"));
+#endif
 out:
 	fprintf(bat.log, _("\nReturn value is %d\n"), err);
 

index 5417c0e..30e39fc 100644
@@ -23,6 +23,7 @@
 #define OPT_READFILE			(OPT_BASE + 2)
 #define OPT_SAVEPLAY			(OPT_BASE + 3)
 #define OPT_LOCAL			(OPT_BASE + 4)
+#define OPT_STANDALONE			(OPT_BASE + 5)
 
 #define COMPOSE(a, b, c, d)		((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
 #define WAV_RIFF			COMPOSE('R', 'I', 'F', 'F')

@@ -150,6 +151,7 @@ struct bat {
 	char *narg;			/* argument string of duration */
 	char *logarg;			/* path name of log file */
 	char *debugplay;		/* path name to store playback signal */
+	bool standalone;		/* enable to bypass analysis */
 
 	struct pcm playback;
 	struct pcm capture;