[patch] alternative peak meter for aplay

[Dirk Jagdmann <doj@cubic.org>]

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This patch adds an alternative peak meter for aplay/arecord which is 
enabled via three "-v" command line arguments. This new mode differs 
from the old in a larger meter, no linefeeds for every meter update and 
a static maximum peak (for 1s).

-- 
---> Dirk Jagdmann ^ doj / cubic
----> http://cubic.org/~doj
-----> http://llg.cubic.org

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Index: alsa-utils-1.0.10/aplay/aplay.c
===================================================================
--- alsa-utils-1.0.10.orig/aplay/aplay.c	2005-11-08 17:43:36.000000000 +0100
+++ alsa-utils-1.0.10/aplay/aplay.c	2005-12-03 01:05:34.000000000 +0100
@@ -1183,17 +1183,47 @@
 	max = 1 << (bits_per_sample-1);
 	if (max <= 0)
 		max = 0x7fffffff;
-	printf(_("Max peak (%li samples): 0x%08x "), (long)ocount, max_peak);
+
 	if (bits_per_sample > 16)
 		perc = max_peak / (max / 100);
 	else
 		perc = max_peak * 100 / max;
-	for (val = 0; val < 20; val++)
-		if (val <= perc / 5)
-			putc('#', stdout);
-		else
-			putc(' ', stdout);
-	printf(" %i%%\n", perc);
+
+	if(verbose<=2) {
+		printf(_("Max peak (%li samples): 0x%08x "), (long)ocount, max_peak);
+		for (val = 0; val < 20; val++)
+			if (val <= perc / 5)
+				putchar('#');
+			else
+				putchar(' ');
+		printf(" %i%%\n", perc);
+	}
+	else if(verbose==3) {
+		static int maxperc=0;
+		static time_t t=0;
+		const time_t tt=time(NULL);
+		if(tt>t) {
+			t=tt;
+			maxperc=0;
+		}
+		if(perc>maxperc)
+			maxperc=perc;
+
+		putchar('\r');
+		for (val = 0; val <= perc / 2 && val < 50; val++)
+			putchar('#');
+		for (; val < maxperc / 2 && val < 50; val++)
+			putchar(' ');
+		putchar('+');
+		for (++val; val < 50; val++)
+			putchar(' ');
+
+		printf("| %02i%%", maxperc);
+		if (perc>99)
+			printf(_(" !clip  "));
+
+		fflush(stdout);
+	}
 }
 
 /*
Index: alsa-utils-1.0.10/aplay/aplay.1
===================================================================
--- alsa-utils-1.0.10.orig/aplay/aplay.1	2005-11-14 11:11:50.000000000 +0100
+++ alsa-utils-1.0.10/aplay/aplay.1	2005-12-03 01:06:01.000000000 +0100
@@ -111,7 +111,7 @@
 \fI\-v, \-\-verbose\fP           
 Show PCM structure and setup.
 This option is accumulative.  The VU meter is displayed when this
-is given twice.
+is given twice or three times.
 .TP
 \fI\-I, \-\-separate\-channels\fP 
 One file for each channel
Index: alsa-utils-1.0.10/aplay/arecord.1
===================================================================
--- alsa-utils-1.0.10.orig/aplay/arecord.1	2005-11-14 11:11:50.000000000 +0100
+++ alsa-utils-1.0.10/aplay/arecord.1	2005-12-03 01:06:19.000000000 +0100
@@ -111,7 +111,7 @@
 \fI\-v, \-\-verbose\fP           
 Show PCM structure and setup.
 This option is accumulative.  The VU meter is displayed when this
-is given twice.
+is given twice or three times.
 .TP
 \fI\-I, \-\-separate\-channels\fP 
 One file for each channel