Initial commit

3 files changed, 476 insertions, 0 deletions

diff --git a/config.h b/config.h
new file mode 100644
index 0000000..bdfa4b3
--- /dev/null
+++ b/config.h
@@ -0,0 +1,88 @@
+/*Settings for customization*/
+#define BLANK " " //Blank space in the graph
+#define BAR "|" //Character to use for the bar
+#define COLORFUL false //Use custom colors?
+/*
+ *Use Ncurses colors, valid colors are:
+ *      COLOR_BLACK
+ *      COLOR_RED
+ *      COLOR_GREEN
+ *      COLOR_YELLOW
+ *      COLOR_BLUE  
+ *      COLOR_MAGENTA
+ *      COLOR_CYAN   
+ *      COLOR_WHITE  
+ */
+#define BORCOLORBG COLOR_BLACK //Border color background
+#define BORCOLORFG COLOR_RED //Border color forground
+#define BARCOLORBG COLOR_GREEN //Bar color background
+#define BARCOLORFG COLOR_YELLOW //Bar color forground
+#define BLANKCOLORBG COLOR_BLUE //Blank color background
+#define BLANKCOLORFG COLOR_MAGENTA //Blank color forground
+
+
+/********************************************************
+ * STOP CHANGEING HERE UNLESS YOU KNOW WHAT YOU'RE DOING*
+ ********************************************************/
+
+/* Define to 1 if you have the `atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `usleep' function. */
+#define HAVE_USLEEP 1
+
+/* Name of package */
+#define PACKAGE "vaud"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "alexander.pickering@anondomain.site90.net"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "visual-audio"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "vaud 0.5"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "vaud"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "0.5"
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "0.5"
+
+
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..2d89131
--- /dev/null
+++ b/makefile
@@ -0,0 +1,18 @@
+# the compiler: gcc for C program, define as g++ for C++
+CC = g++
+
+# compiler flags:
+PREFLAGS  =
+POSTFLAGS = -lncurses -ljack
+
+# the build target executable:
+TARGET = vaud
+
+
+all: $(TARGET)
+
+$(TARGET): $(TARGET).c
+	$(CC) $(PREFLAGS) -o $(TARGET) $(TARGET).c $(POSTFLAGS)
+
+clean:
+	$(RM) $(TARGET)
diff --git a/vaud.c b/vaud.c
new file mode 100644
index 0000000..9f95505
--- /dev/null
+++ b/vaud.c
@@ -0,0 +1,370 @@
+/*
+	vaud.c
+	A console based audio visualizer for JACK
+	Copyright (C) 2014 Alexander M. Pickering
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License
+	as published by the Free Software Foundation; either version 2
+	of the License, or (at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+	A big thank you goes to Nicholas J. Humfrey, whos jack meter
+	was modified to make this. You can view the project here:
+	http://www.aelius.com/njh/jackmeter/
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <ncurses.h>
+#include <jack/jack.h>
+#include <getopt.h>
+#include "config.h"
+
+/*Stuff to get from the settings file*/
+
+float bias = 1.0f;
+float peak = 0.0f;
+jack_default_audio_sample_t *data;
+jack_nframes_t dframes;
+int dpeak = 0;
+int dtime = 0;
+int decay_len;
+int set = 0;
+jack_port_t *input_port = NULL;
+jack_client_t *client = NULL;
+
+WINDOW *create_newwin(int height, int width, int starty, int startx);
+
+/* Read and reset the recent peak sample */
+static float read_peak()
+{
+	float tmp = peak;
+	peak = 0.0f;
+
+	return tmp;
+}
+/* Callback called by JACK when audio is available.
+   Stores value of peak sample */
+static int process_peak(jack_nframes_t nframes, void *arg)
+{
+	dframes = nframes;
+	jack_default_audio_sample_t *in;
+	unsigned int i;
+
+
+	/* just incase the port isn't registered yet */
+	if (input_port == NULL) {
+		return 0;
+	}
+
+
+	/* get the audio samples, and find the peak sample */
+	in = (jack_default_audio_sample_t *) jack_port_get_buffer(input_port, nframes);
+	for (i = 0; i < nframes; i++) {
+		const float s = fabs(in[i]);
+		if (s > peak) {
+			peak = s;
+		}
+	}
+	data = in;
+
+	return 0;
+}
+
+
+/* Close down JACK when exiting */
+static void cleanup()
+{
+	const char **all_ports;
+	unsigned int i;
+
+	fprintf(stderr,"cleanup()\n");
+
+	if (input_port != NULL ) {
+
+		all_ports = jack_port_get_all_connections(client, input_port);
+
+		for (i=0; all_ports && all_ports[i]; i++) {
+			jack_disconnect(client, all_ports[i], jack_port_name(input_port));
+		}
+	}
+
+	/* Leave the jack graph */
+	jack_client_close(client);
+
+}
+
+
+/* Connect the chosen port to ours */
+static void connect_port(jack_client_t *client, char *port_name)
+{
+	jack_port_t *port;
+
+	// Get the port we are connecting to
+	port = jack_port_by_name(client, port_name);
+	if (port == NULL) {
+		fprintf(stderr, "Can't find port '%s'\n", port_name);
+		exit(1);
+	}
+
+	// Connect the port to our input port
+	fprintf(stderr,"Connecting '%s' to '%s'...\n", jack_port_name(port), jack_port_name(input_port));
+	if (jack_connect(client, jack_port_name(port), jack_port_name(input_port))) {
+		fprintf(stderr, "Cannot connect port '%s' to '%s'\n", jack_port_name(port), jack_port_name(input_port));
+		exit(1);
+	}
+}
+
+
+/* Sleep for a fraction of a second */
+static int fsleep( float secs )
+{
+
+//#ifdef HAVE_USLEEP
+	return usleep( secs * 1000000 );
+//#endif
+}
+
+
+/* Display how to use this program */
+static int usage( const char * progname )
+{
+	fprintf(stderr, "Visual Audio Version - %s\n\n", VERSION);
+	fprintf(stderr, "Usage %s [-f freqency] [-m meter] [-n] [<port>, ...]\n\n", progname);
+	fprintf(stderr, "where  -f      is how often to update the meter per second [8]\n");
+ 	fprintf(stderr, "       -g      is the number of the meter (1-2)\n");
+	fprintf(stderr, "       -n      changes mode to output meter level as number in decibels\n");
+	fprintf(stderr, "       <port>  the port(s) to monitor (multiple ports are mixed)\n");
+	exit(1);
+}
+
+/*Start the ncurses stuff
+ */
+void start_ncurses()
+{
+	if(COLORFUL && !has_colors) //Settings tell us to be colorful,
+				    //but terminal does not support colors.
+	{
+		printf("Your terminal does not support colors! Chage \"COLORFUL\" in config.h to 0 and rebuild.");
+		exit(1);
+	}
+	initscr(); //Start ncurses
+	curs_set(0); //Hide cursor
+	if(COLORFUL)
+	{
+		start_color(); //Tell ncurses to be colorufl!
+		init_pair(1, BORCOLORFG, BORCOLORBG); //Color the border
+		init_pair(2, BARCOLORFG, BARCOLORBG); //Color the bars
+		init_pair(3, BLANKCOLORBG, BLANKCOLORFG); //Color the blank space	
+	}
+}
+
+/* Creates a new NCurses window
+ *int height	: the height of the window to make
+ *int width 	: the width of the window to make
+ *int startx	: the column to start the window on
+ *int starty	: the row to start the window on
+ */
+WINDOW *create_newwin(int height, int width, int startx, int starty)
+{       WINDOW *local_win;
+	if(COLORFUL)
+		attron(COLOR_PAIR(1));
+        local_win = newwin(height, width, starty, startx);
+        box(local_win, 0 , 0);
+        wrefresh(local_win);
+	if(COLORFUL)
+		attroff(COLOR_PAIR(1));
+
+        return local_win;
+}
+
+void display_centerBars()
+{
+	int width,height,startx,starty,i=0;
+	WINDOW *my_win;
+
+	/*Get width and height of console, make border*/
+	getmaxyx(stdscr,height,width);
+	my_win = create_newwin(height,width,startx,starty);
+	
+	/*Figure out how which nodes we can safely get*/
+	int space = ((unsigned int) dframes) / width;
+
+	for(i=0;i<space;i+=1)
+	{
+		float samp = fabs(data[space * i]); //get the waveform data
+		float dec;
+		mvprintw(height/2,i,BAR);
+		int j;
+		for(j=0;j<samp*height;j++)
+		{
+			mvprintw((height/2)+j,i,BAR);
+			mvprintw((height/2)-j,i,BAR);
+		}
+	}
+}
+
+/* Displays the graph
+ */
+void display_meter()
+{
+	/*Some variables to keep track of stuff*/
+	int i;
+	int width,height;
+	int startx,starty = 0;
+	int space = 1;
+	WINDOW *my_win;
+
+	/*Get width and height of console, make border*/
+	getmaxyx(stdscr,height,width);
+	my_win = create_newwin(height,width,startx,starty);
+
+	/*Figure out how far inbetween the samples that are "safe" to get are*/
+	int samples = ((unsigned int) dframes) / width;
+
+	/*For every sample we can safely get*/
+	for(i=0;i<dframes;i+=samples)
+	{
+		/*Get the value*/
+		float samp = fabs(data[i]);
+		float dec; //The percentage up the graph
+		if(COLORFUL)
+			attron(COLOR_PAIR(2));
+		/*Draw whitespace from the ground up*/
+		for(dec = height+2;dec > samp;dec-=(1.0/height))
+		{
+			if(dec*height<height-1 && dec*height>=1)
+			mvprintw(dec*height,space,BLANK);
+		}
+		if(COLORFUL)
+			attroff(COLOR_PAIR(2));
+			attron(COLOR_PAIR(3));
+		/*And draw bars the rest of the way*/
+		for(;dec>0;dec-=(1.0/height))
+		{
+			if(dec*height >= 1)
+			mvprintw(dec*height,space,BAR);
+		}
+		if(COLORFUL)
+			attroff(COLOR_PAIR(3));
+		/*Makes sure we don't draw over the frame*/
+		if(space < width-2)
+		{
+			space++;
+		}
+	}
+	refresh(); //And refresh the screen
+}
+
+
+int main(int argc, char *argv[])
+{
+	int console_width = 79;
+	jack_status_t status;
+	int running = 1;
+	float ref_lev;
+	int decibels_mode = 0;
+	int rate = 8;
+	int opt;
+	int graph = 1;
+
+	// Make STDOUT unbuffered
+	setbuf(stdout, NULL);
+
+	while ((opt = getopt(argc, argv, "f:g:n")) != -1) {
+		switch (opt) {
+			case 'g':
+				graph = atoi(optarg);
+				break;
+			case 'f':
+				rate = atoi(optarg);
+				fprintf(stderr,"Updates per second: %d\n", rate);
+				break;
+			case 'n':
+				decibels_mode = 1;
+				break;
+			default:
+				/* Show usage/version information */
+				usage( argv[0] );
+				break;
+		}
+	}
+
+
+
+	// Register with Jack
+	if ((client = jack_client_open("meter", JackNullOption, &status)) == 0) {
+		fprintf(stderr, "Failed to start jack client: %d\n", status);
+		exit(1);
+	}
+	fprintf(stderr,"Registering as '%s'.\n", jack_get_client_name( client ) );
+
+	// Create our input port
+	if (!(input_port = jack_port_register(client, "in", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0))) {
+		fprintf(stderr, "Cannot register input port 'meter'.\n");
+		exit(1);
+	}
+
+	// Register the cleanup function to be called when program exits
+	atexit( cleanup );
+
+	// Register the peak signal callback
+	jack_set_process_callback(client, process_peak, 0);
+
+
+	if (jack_activate(client)) {
+		fprintf(stderr, "Cannot activate client.\n");
+		exit(1);
+	}
+
+
+	// Connect our port to specified port(s)
+	if (argc > optind) {
+		while (argc > optind) {
+			connect_port( client, argv[ optind ] );
+			optind++;
+		}
+	} else {
+		fprintf(stderr,"Meter is not connected to a port.\n");
+	}
+
+	// Calculate the decay length (should be 1600ms)
+	decay_len = (int)(1.6f / (1.0f/rate));
+
+
+	// Display the scale
+	if (decibels_mode==0) {
+		start_ncurses();
+	}
+	while (running) {
+		float db = 20.0f * log10f(read_peak() * bias);
+
+		if (decibels_mode==1) {
+			printf("%1.1f\n", db);
+		} else {
+			switch(graph)
+			{	
+				case 1 : display_meter();break;
+				case 2 : display_centerBars();break;
+			}
+		}
+
+		fsleep( 1.0f/rate );
+	}
+	endwin();
+	return 0;
+}
+