fixed

README.md

@@ -3,7 +3,8 @@
 .asoundrc (Должно быть в ~/)  
 Нужно поменять rockchipes8316c, на вашу карту (aplay -L)  
 
-cc spark.c -lm -s -o spark  
 modprobe snd-aloop  
+
+cc spark_ncurses.c -lm -lncurses -s -ospark
 chmod +x audio_vis.sh  
 ./audio_vis.sh  

audio_vis.sh

@@ -1,4 +1,2 @@
 #!/bin/sh
-cols=180
-
-arecord --rate 48000 --buffer-size=2048 -D loopout -N -q -c 1 -f S24_LE -t raw | hexdump -e '/4 " %d"' | tr -d '*' | tr -d '-' | xargs -n $cols ./spark
+arecord --rate 16000 --buffer-size=1024 -D loopout -MNqc 1 -f S24_LE -t raw | hexdump -e '/4 " %d"' | tr -d '*' | ./spark

spark.c

@@ -1,77 +0,0 @@
-#include <stdio.h>
-#include <float.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-double min = 90000;
-double max = 3000000;
-
-int parse_double(const char *str, double *res) {
-	char *ptr;
-
-	*res = strtod(str, &ptr);
-	if (*ptr)
-		return 0;
-
-	return 1;
-}
-
-void print(double diff, double val) {
-	int lvl = (int)round((val - min + 1) / diff * 7);
-	if (lvl < 0)
-		lvl = 0;
-
-	else if (lvl > 7)
-		lvl = 7;
-
-	putchar('\xe2');
-	putchar('\x96');
-	putchar('\x81' + lvl);
-}
-
-int main(int argc, char **argv) {
-	argv++;
-	argc--;
-
-	if (argc == 0) {
-		fprintf(stderr, "spark: missing operands\n");
-		return 1;
-	}
-
-	size_t as = argc / 2;
-	double *a = malloc((as + 1) * sizeof(double));
-	if (a == NULL)
-		return 1;
-
-	size_t j = 0;
-	for (size_t i = 0; i < as; i++) {
-		double val = 0;
-		if (!parse_double(argv[j], &val)) {
-			j++;
-			continue;
-		}
-
-		double val2 = 0;
-		if (!parse_double(argv[j + 1], &val)) {
-			j++;
-			continue;
-		}
-
-		a[i] = (val + val2) / 2;
-		j++;
-	}
-
-	double diff = max - min + 1;
-	if (diff < 1)
-		diff = 1;
-
-	for (size_t i = 0; i < as; i++)
-		print(diff, a[i]);
-
-	putchar('\r');
-
-	free(a);
-	return 0;
-}

spark_ncurses.c

@@ -0,0 +1,132 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <ncurses.h>
+#include <sys/ioctl.h>
+#include <ctype.h>
+#include <math.h>
+
+#define NARGS 4096
+#define ARG_SIZE 50
+#define MAX 1000000
+#define MIN 50000
+
+int args;
+double values[NARGS + 1];
+
+struct winsize ws;
+
+int parse_double(const char *str, double *res) {
+	char *ptr;
+
+	*res = strtod(str, &ptr);
+	if (*ptr)
+		return 0;
+
+	return 1;
+}
+
+int add_value(const char *str) {
+	if (args >= sizeof(values) / sizeof(double) || args > ws.ws_col)
+		return 1;
+
+	double val = 0;
+	if (!parse_double(str, &val))
+		return 1;
+
+	values[args] = val;
+	args++;
+
+	return 0;
+}
+
+void stdin_read(void) {
+	char arg[ARG_SIZE + 1];
+	char *p = arg;
+
+	fflush(stdin);
+	while (1) {
+		int c = getchar();
+		if (c == EOF)
+			return;
+
+		else if (c == ' ' && p != arg) {
+			*p = '\0';
+			p = arg;
+
+			if (add_value(arg))
+				break;
+		}
+
+		else {
+			*p = c;
+			if (p + 1 == arg + sizeof(arg))
+				break;
+
+			p++;
+		}
+	}
+}
+
+void mvprint(int y, int x, int lvl) {
+	char *fmt = "@";
+	if (lvl < 4) {
+		fmt = "/";
+		if (y > ws.ws_row / 2)
+			fmt = "\\";
+	}
+
+	else if (lvl - 4 <= 2)
+		fmt = "+";
+
+	mvprintw(y, x, "%s", fmt);
+}
+
+void print(double value, double diff, int col) {
+	size_t m_screen = ws.ws_row / 2;
+
+	if (value >= 0) {
+		int lvl = (int)round((value - MIN + 1) / diff * 2);
+		mvprint(m_screen - lvl, col, lvl);
+	}
+
+	else {
+		int lvl = (int)round(((value * -1) - MIN + 1) / diff * 2);
+		mvprint(m_screen + lvl, col, lvl);
+	}
+}
+
+void sig_handler(int sig) {
+	(void)sig;
+
+	endwin();
+	exit(0);
+}
+
+int main(void) {
+	signal(SIGINT, sig_handler);
+	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) < 0)
+		return 1;
+
+	initscr();
+	curs_set(0);
+	timeout(0);
+
+	double diff = MAX - MIN + 1;
+	if (diff < 1)
+		diff = 1;
+
+	while (1) {
+		args = 0;
+		stdin_read();
+
+		clear();
+		for (int i = 1; i < args - 1; i++)
+			print((values[i - 1] + values[i] + values[i + 1]) / 4, diff, i);
+
+		refresh();
+	}
+}