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consoleif.c
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consoleif.c
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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <ncurses.h>
#include <pthread.h>
#include <string.h>
#include "error.h"
#include "aldl-io.h"
#include "config.h"
#include "loadconfig.h"
#include "useful.h"
enum {
RED_ON_BLACK = 1,
BLACK_ON_RED = 2,
GREEN_ON_BLACK = 3,
CYAN_ON_BLACK = 4,
WHITE_ON_BLACK = 5,
WHITE_ON_RED = 6
};
typedef enum _gaugetype {
GAUGE_HBAR,
GAUGE_TEXT,
GAUGE_BIN,
GAUGE_ERRSTR,
} gaugetype_t;
typedef struct _gauge {
int x, y; /* coords */
int width, height; /* size */
int data_a, data_b; /* assoc. data index */
aldl_data_t prev_a, prev_b; /* prev. value */
float bottom, top; /* bottom and top of a graph */
int smoothing; /* averaging */
int weight; /* smoothing weight */
int precision; /* floating point precision */
gaugetype_t gaugetype;
} gauge_t;
/* some global cached indexes */
int index_rpm, index_map, index_speed;
typedef struct _consoleif_conf {
int n_gauges; /* number of gauges */
gauge_t *gauge; /* gauge definitions */
dfile_t *dconf; /* conf file, parsed */
int statusbar; /* enable statusbar? */
int delay; /* acq spd */
} consoleif_conf_t;
#define COLOR_STATUSSCREEN RED_ON_BLACK
/* --- variables ---------------------------- */
int w_height, w_width; /* width and height of window */
aldl_conf_t *aldl; /* global pointer to aldl conf struct */
char *bigbuf; /* a large temporary string construction buffer */
aldl_record_t *rec; /* current record */
/* --- local functions ------------------------*/
consoleif_conf_t *consoleif_load_config(aldl_conf_t *aldl);
/* center half-width of an element on the screen */
int xcenter(int width);
int ycenter(int height);
/* print a centered string */
void print_centered_string(char *str);
void statusmessage(char *str);
/* clear screen and display waiting for connection messages */
void cons_wait_for_connection();
/* get a config string for a particular gauge */
char *gconfig(char *parameter, int n);
/* "smooth" a float */
float smooth_float(gauge_t *g);
/* check if a value is past alarm range */
int alarm_range(gauge_t *g);
/* handle ncurses input */
void consoleif_handle_input();
/* gauges -------------------*/
void draw_h_progressbar(gauge_t *g);
void draw_simpletext_a(gauge_t *g);
void draw_bin(gauge_t *g);
void draw_errstr(gauge_t *g);
void gauge_blank(gauge_t *g);
void draw_statusbar();
/* --------------------------------------------*/
void *consoleif_init(void *aldl_in) {
aldl = (aldl_conf_t *)aldl_in;
bigbuf = smalloc(512);
/* load config file */
consoleif_conf_t *conf = consoleif_load_config(aldl);
/* if /etc/aldl-pi/consoleif-start.sh exists, run it */
if(access("/etc/aldl-pi/consoleif-start.sh",X_OK) != -1) {
system("/etc/aldl-pi/consoleif-start.sh");
}
/* initialize root window */
WINDOW *root;
if((root = initscr()) == NULL) {
error(1,ERROR_NULL,"could not init ncurses");
}
curs_set(0); /* remove cursor */
cbreak(); /* dont req. line break for input */
nodelay(root,true); /* non-blocking input */
noecho();
start_color();
init_pair(RED_ON_BLACK,COLOR_RED,COLOR_BLACK);
init_pair(BLACK_ON_RED,COLOR_BLACK,COLOR_RED);
init_pair(GREEN_ON_BLACK,COLOR_GREEN,COLOR_BLACK);
init_pair(CYAN_ON_BLACK,COLOR_CYAN,COLOR_BLACK);
init_pair(WHITE_ON_BLACK,COLOR_WHITE,COLOR_BLACK);
init_pair(WHITE_ON_RED,COLOR_WHITE,COLOR_RED);
/* get initial screen size */
getmaxyx(stdscr,w_height,w_width);
/* some globals */
index_rpm = get_index_by_name(aldl,"RPM");
index_map = get_index_by_name(aldl,"MAP");
index_speed = get_index_by_name(aldl,"SPEED");
cons_wait_for_connection();
int x;
gauge_t *gauge;
while(1) {
rec = newest_record_wait(aldl,rec);
if(rec == NULL) { /* disconnected */
cons_wait_for_connection();
continue;
}
consoleif_handle_input();
for(x=0;x<conf->n_gauges;x++) {
gauge = &conf->gauge[x];
switch(gauge->gaugetype) {
case GAUGE_HBAR:
draw_h_progressbar(gauge);
break;
case GAUGE_TEXT:
draw_simpletext_a(gauge);
break;
case GAUGE_BIN:
draw_bin(gauge);
break;
case GAUGE_ERRSTR:
draw_errstr(gauge);
break;
default:
break;
}
}
if(conf->statusbar == 1) {
draw_statusbar();
}
refresh();
usleep(conf->delay);
}
sleep(4);
delwin(root);
endwin();
refresh();
pthread_exit(NULL);
return NULL;
}
int xcenter(int width) {
return ( w_width / 2 ) - ( width / 2 );
}
int ycenter(int height) {
return ( w_height / 2 ) - ( height / 2 );
}
void print_centered_string(char *str) {
mvaddstr(ycenter(0),xcenter(strlen(str)),str);
}
void draw_statusbar() {
lock_stats();
float pps = aldl->stats->packetspersecond;
unsigned int failcounter = aldl->stats->packetheaderfail +
aldl->stats->packetchecksumfail +
aldl->stats->packetrecvtimeout;
unlock_stats();
if(w_width < 40) { /* small statusbar */
mvprintw(w_height - 1,0,"%u R=%.1f ERR=%u ",
rec->t / 1000, pps, failcounter);
} else { /* lg statusbar */
mvprintw(w_height - 1,1,"%s TIMESTAMP: %i PKT/S: %.1f FAILED: %u ",
VERSION, rec->t, pps, failcounter);
}
}
void statusmessage(char *str) {
erase();
attron(COLOR_PAIR(COLOR_STATUSSCREEN));
print_centered_string(str);
mvaddstr(1,1,VERSION);
attroff(COLOR_PAIR(COLOR_STATUSSCREEN));
refresh();
usleep(5000);
}
void cons_wait_for_connection() {
aldl_state_t s = ALDL_LOADING;
aldl_state_t s_cache = ALDL_CONNECTED; /* cache to avoid redraws */
while(s > 10) { /* messages >10 are non-connected */
s = get_connstate(aldl);
if(s != s_cache) { /* status message has changed */
statusmessage(get_state_string(s)); /* disp. msg */
s_cache = s; /* reset cache */
} else {
usleep(10000); /* checking conn state too fast is bad */
}
}
statusmessage("Buffering...");
pause_until_buffered(aldl);
erase();
}
/* --- GAUGES ---------------------------------- */
void draw_bin(gauge_t *g) {
aldl_define_t *def = &aldl->def[g->data_a];
gauge_blank(g);
aldl_data_t *data = &rec->data[g->data_a];
if(data->i == 0) return;
attron(COLOR_PAIR(GREEN_ON_BLACK));
mvprintw(g->y,g->x,"%s",def->name);
attroff(COLOR_PAIR(GREEN_ON_BLACK));
}
void draw_errstr(gauge_t *g) {
int errfound = 0;
int x = 0;
gauge_blank(g);
for(x=0;x<=aldl->n_defs - 1;x++) {
if(aldl->def[x].err == 1) { /* is an err flag */
if(rec->data[x].i == 1) { /* err flag is set */
if(errfound > 4) return; /* display max 4 codes */
attron(COLOR_PAIR(RED_ON_BLACK));
errfound++;
if(errfound == 1) mvprintw(g->y,g->x,"ERROR:");
printw(" %s",aldl->def[x].name);
attroff(COLOR_PAIR(RED_ON_BLACK));
}
}
}
if(errfound == 0) mvprintw(g->y,g->x,"NO ERRORS");
}
void draw_simpletext_a(gauge_t *g) {
aldl_define_t *def = &aldl->def[g->data_a];
gauge_blank(g);
aldl_data_t *data = &rec->data[g->data_a];
if(alarm_range(g) == 1) attron(COLOR_PAIR(RED_ON_BLACK));
switch(def->type) {
case ALDL_FLOAT:
mvprintw(g->y,g->x,"%s: %.*f",
def->name,g->precision,smooth_float(g));
#ifdef CONSOLEIF_UOM
if(def->uom != NULL) printw(" %s",def->uom);
#endif
break;
case ALDL_INT:
case ALDL_BOOL:
mvprintw(g->y,g->x,"%s: %i",
def->name,data->i);
#ifdef CONSOLEIF_UOM
if(def->uom != NULL) printw(" %s",def->uom);
#endif
break;
default:
return;
}
if(alarm_range(g) == 1) attroff(COLOR_PAIR(RED_ON_BLACK));
}
int alarm_range(gauge_t *g) {
aldl_define_t *def = &aldl->def[g->data_a];
aldl_data_t *data = &rec->data[g->data_a];
switch(def->type) {
case ALDL_FLOAT:
if( ( def->alarm_low_enable == 1 && data->f < def->alarm_low.f ) ||
( def->alarm_high_enable == 1 && data->f > def->alarm_high.f) ) return 1;
return 0;
break;
case ALDL_INT:
if( ( def->alarm_low_enable == 1 && data->i < def->alarm_low.i ) ||
( def->alarm_high_enable == 1 && data->i > def->alarm_high.i) ) return 1;
return 0;
default:
return 0;
}
}
void draw_h_progressbar(gauge_t *g) {
aldl_define_t *def = &aldl->def[g->data_a];
float data_lm = 0; /* limited data for progress bar */
float data = 0; /* unlimited data for txt display */
switch(def->type) {
case ALDL_INT:
case ALDL_BOOL:
data = rec->data[g->data_a].i;
data_lm = rf_clamp_int(g->bottom,g->top,data);
break;
case ALDL_FLOAT:
data = smooth_float(g);
data_lm = rf_clamp_float(g->bottom,g->top,data);
break;
default:
break;
}
int x;
char *curs;
/* get rh text width */
int width_rhtext = sprintf(bigbuf,"] %.0f",g->top);
if(g->precision == 1) width_rhtext += ( g->precision + 1); /* incl . */
#ifdef CONSOLEIF_UOM
width_rhtext += sprintf(bigbuf,"%s",def->uom);
#endif
/* print LH text */
int width_lhtext = sprintf(bigbuf,"%s [",def->name);
curs = bigbuf + width_lhtext; /* set cursor after initial text */
int pbwidth = g->width - width_lhtext - width_rhtext;
int filled = data_lm / ( g->top / pbwidth );
int remainder = pbwidth - filled;
/* draw progress bar content */
for(x=0;x<filled;x++) { /* filled section */
curs[0] = CONSOLEIF_BAR_CHAR;
curs++;
}
for(x=0;x<remainder;x++) { /* unfilled section */
curs[0] = ' ';
curs++;
}
/* draw trailing text */
curs += sprintf(curs,"] %.*f",g->precision,data);
/* optional UOM */
#ifdef CONSOLEIF_UOM
sprintf(curs,"%s",data,def->uom);
#endif
move(g->y,g->x);
gauge_blank(g);
if(alarm_range(g) == 1) attron(COLOR_PAIR(RED_ON_BLACK));
mvaddstr(g->y,g->x,bigbuf);
if(alarm_range(g) == 1) attroff(COLOR_PAIR(RED_ON_BLACK));
}
void gauge_blank(gauge_t *g) {
move(g->y,g->x);
int x;
for(x=0;x<g->width;x++) addch(' ');
}
/*---- * LOAD CONFIG *--------------------------- */
consoleif_conf_t *consoleif_load_config(aldl_conf_t *aldl) {
consoleif_conf_t *conf = malloc(sizeof(consoleif_conf_t));
if(aldl->consoleif_config == NULL) error(1,ERROR_CONFIG,
"no consoleif config specified");
conf->dconf = dfile_load(aldl->consoleif_config);
if(conf->dconf == NULL) error(1,ERROR_CONFIG,
"consoleif config file missing");
dfile_t *config = conf->dconf;
/* GLOBAL OPTIONS */
conf->n_gauges = configopt_int_fatal(config,"N_GAUGES",1,65535);
conf->statusbar = configopt_int(config,"STATUSBAR",0,1,0);
conf->delay = configopt_int(config,"DELAY",0,65535,0);
/* PER GAUGE OPTIONS */
conf->gauge = malloc(sizeof(gauge_t) * conf->n_gauges);
gauge_t *gauge;
char *idstring = NULL;
int n;
for(n=0;n<conf->n_gauges;n++) {
gauge = &conf->gauge[n];
idstring = configopt(config,gconfig("A_NAME",n),NULL);
if(idstring != NULL) { /* A_NAME is present */
gauge->data_a = get_index_by_name(aldl,idstring);
if(gauge->data_a == -1) error(1,ERROR_CONFIG,
"consoleif: gauge %i invalid name %s",n,idstring);
} else {
error(1,ERROR_CONFIG,"consoleif: name missing from %i",n);
}
/* b_name is set to a_name if not set at all ... */
idstring = configopt(config,gconfig("B_NAME",n),NULL);
if(idstring != NULL) { /* B_NAME is present */
gauge->data_b = get_index_by_name(aldl,idstring);
if(gauge->data_b == -1) error(1,ERROR_CONFIG,
"consoleif: gauge %i invalid name %s",n,idstring);
} else {
gauge->data_b = gauge->data_a;
}
gauge->x = configopt_int_fatal(config,gconfig("X",n),0,10000);
gauge->y = configopt_int_fatal(config,gconfig("Y",n),0,10000);
gauge->width = configopt_int(config,gconfig("WIDTH",n),0,10000,30);
gauge->height = configopt_int(config,gconfig("HEIGHT",n),0,10000,1);
gauge->bottom = configopt_float(config,gconfig("MIN",n),0);
gauge->top = configopt_float(config,gconfig("MAX",n),65535);
gauge->precision = configopt_int(config,gconfig("PRECISION",n),0,20,0);
gauge->smoothing = configopt_int(config,gconfig("SMOOTHING",n),0,1000,0);
if(gauge->smoothing > aldl->bufstart - 1) {
error(1,ERROR_BUFFER,"gauge %i has its smoothing setting too high\n\
gauge smoothing %i, but prebuffer is %i\n\
please decrease smoothing or increase prebuffer.",
n,gauge->smoothing,aldl->bufstart);
}
gauge->weight = configopt_int(config,gconfig("WEIGHT",n),0,500,0);
/* TYPE SELECTOR */
char *gtypestr = configopt_fatal(config,gconfig("TYPE",n));
if(rf_strcmp(gtypestr,"HBAR") == 1) {
gauge->gaugetype = GAUGE_HBAR;
} else if(rf_strcmp(gtypestr,"TEXT") == 1) {
gauge->gaugetype = GAUGE_TEXT;
} else if(rf_strcmp(gtypestr,"BIN") == 1) {
gauge->gaugetype = GAUGE_BIN;
} else if(rf_strcmp(gtypestr,"ERRSTR") == 1) {
gauge->gaugetype = GAUGE_ERRSTR;
} else {
error(1,ERROR_CONFIG,"consoleif: gauge %i bad type %s",n,gtypestr);
}
}
return conf;
}
char *gconfig(char *parameter, int n) {
sprintf(bigbuf,"G%i.%s",n,parameter);
return bigbuf;
}
float smooth_float(gauge_t *g) {
if(g->smoothing == 0) return (rec->data[g->data_a].f +
rec->data[g->data_b].f) / 2;
int x;
aldl_record_t *r = rec;
float avg = 0;
for(x=0;x<=g->smoothing;x++) {
avg += ( r->data[g->data_a].f + r->data[g->data_b].f ) / 2;
if(r->prev == NULL) { /* attempt to trap underrun (might not work) */
error(1,ERROR_BUFFER,"buffer underrun caught in %s gauge\n\
%i smoothing w/ %i total buffer, and %i prebuffer.\n\
please decrease smoothing or increase prebuffer settings!!",
aldl->def[g->data_a].name,g->smoothing,aldl->bufsize,aldl->bufstart);
}
r = r->prev;
}
avg += ( ( r->data[g->data_a].f + r->data[g->data_b].f ) / 2 ) * g->weight;
return avg / ( g->smoothing + g->weight + 1 );
}
void consoleif_exit() {
endwin();
}
void consoleif_handle_input() {
int c;
if((c = getch()) != ERR) {
/* do stuff here */
}
}