From 1e697494e8ab6554b87982e15bd5abe3b5b8f67f Mon Sep 17 00:00:00 2001
From: Tomas Mudrunka <tomas@mudrunka.cz>
Date: Mon, 21 Oct 2013 22:57:57 +0200
Subject: [PATCH] Beermeter

---
 c/beermeter/Makefile            |  1 +
 c/beermeter/accounts/.gitignore |  1 +
 c/beermeter/audio.c             | 22 ++++++++++++++
 c/beermeter/audio.sh            |  3 ++
 c/beermeter/beermeter.sh        | 52 +++++++++++++++++++++++++++++++++
 5 files changed, 79 insertions(+)
 create mode 100644 c/beermeter/Makefile
 create mode 100644 c/beermeter/accounts/.gitignore
 create mode 100644 c/beermeter/audio.c
 create mode 100755 c/beermeter/audio.sh
 create mode 100755 c/beermeter/beermeter.sh

diff --git a/c/beermeter/Makefile b/c/beermeter/Makefile
new file mode 100644
index 0000000..18cfc57
--- /dev/null
+++ b/c/beermeter/Makefile
@@ -0,0 +1 @@
+all: audio
diff --git a/c/beermeter/accounts/.gitignore b/c/beermeter/accounts/.gitignore
new file mode 100644
index 0000000..72e8ffc
--- /dev/null
+++ b/c/beermeter/accounts/.gitignore
@@ -0,0 +1 @@
+*
diff --git a/c/beermeter/audio.c b/c/beermeter/audio.c
new file mode 100644
index 0000000..839f47d
--- /dev/null
+++ b/c/beermeter/audio.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+#define SAMPLE_MIN -128
+#define SAMPLE_MAX 127
+
+int main() {
+	unsigned long count=0;
+	char sample, sample_last=SAMPLE_MIN, x=0, y=0;
+	while(!feof(stdin)) {
+		fread(&sample,1,1,stdin);
+		if(
+			(sample_last < 0 && sample > SAMPLE_MAX/2)
+			|| (sample_last >= 0 && sample < SAMPLE_MIN/2)
+		)
+		{
+			putchar('.');
+			//printf("\r%lu    ", ++count);
+			fflush(stdout);
+			sample_last=sample;
+		}
+	}
+}
diff --git a/c/beermeter/audio.sh b/c/beermeter/audio.sh
new file mode 100755
index 0000000..8ecffca
--- /dev/null
+++ b/c/beermeter/audio.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+PATH="$PATH:./"
+arecord -c 1 -f S8 -r 8000 -t raw 2>/dev/null | audio
diff --git a/c/beermeter/beermeter.sh b/c/beermeter/beermeter.sh
new file mode 100755
index 0000000..e6c7e6a
--- /dev/null
+++ b/c/beermeter/beermeter.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+title='Beer-O-Meter'
+accounts='./accounts'
+backend='./audio.sh'
+tmp="/tmp/beertmp-$$";
+dialog=$(which dialog);
+
+beer_stat() {
+	echo $(wc -c "$accounts/$1" | cut -d ' ' -f 1) piv
+}
+
+add_account() {
+	"$dialog" --inputbox "New account name" 0 0 2>"$tmp"
+	[ $? = 0 ] && touch "$accounts/$(cat "$tmp")";
+}
+
+servis_menu() {
+	$dialog --menu "$title servis" 0 0 0 new "Novy stamgast" exit "Konec party" 2>"$tmp"
+	option="$(cat "$tmp")"
+
+	case $option in
+		new)
+			add_account
+			;;
+		exit)
+			exit
+			;;
+	esac
+}
+
+beer_menu() {
+	echo -n > "$accounts/.totals"
+	ls -1 --group-directories-first "$accounts" | while read i; do
+		echo -n "$i"; echo -ne "\x00";
+		echo -n $(beer_stat "$i");  echo -ne "\x00"
+		echo -e "$i\t$(beer_stat "$i")" >> "$accounts/.totals"
+	done | xargs -0 $dialog --menu "$title stamgasti" 0 0 0
+}
+
+main_menu() {
+	while true; do
+		beer_menu 2>"$tmp"
+		[ "$?" = "0" ] && {
+			stamgast="$(cat "$tmp")"
+			echo == Cepuje stamgast $stamgast, ukonci ctrl+c ==
+			"$backend" | tee -a "$accounts/$stamgast"
+			true
+		} || servis_menu
+	done
+}
+
+main_menu
-- 
2.30.2