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cava/config.c

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#include "config.h"
#include "util.h"
#include <ctype.h>
#include <iniparser.h>
#include <math.h>
#ifdef SNDIO
#include <sndio.h>
#endif
#include <stdarg.h>
#include <stdbool.h>
#include <sys/stat.h>
double smoothDef[5] = {1, 1, 1, 1, 1};
enum input_method default_methods[] = {
INPUT_FIFO,
INPUT_PORTAUDIO,
INPUT_ALSA,
INPUT_PULSE,
};
char *outputMethod, *channels;
const char *input_method_names[] = {
"fifo", "portaudio", "alsa", "pulse", "sndio", "shmem",
};
const bool has_input_method[] = {
true, /** Always have at least FIFO and shmem input. */
HAS_PORTAUDIO, HAS_ALSA, HAS_PULSE, HAS_SNDIO, true,
};
enum input_method input_method_by_name(const char *str) {
for (int i = 0; i < INPUT_MAX; i++) {
if (!strcmp(str, input_method_names[i])) {
return (enum input_method)i;
}
}
return INPUT_MAX;
}
void write_errorf(void *err, const char *fmt, ...) {
struct error_s *error = (struct error_s *)err;
va_list args;
va_start(args, fmt);
error->length +=
vsnprintf((char *)error->message + error->length, MAX_ERROR_LEN - error->length, fmt, args);
va_end(args);
}
int validate_color(char *checkColor, void *params, void *err) {
struct config_params *p = (struct config_params *)params;
struct error_s *error = (struct error_s *)err;
int validColor = 0;
if (checkColor[0] == '#' && strlen(checkColor) == 7) {
// If the output mode is not ncurses, tell the user to use a named colour instead of hex
// colours.
if (p->om != OUTPUT_NCURSES) {
#ifdef NCURSES
write_errorf(error,
"hex color configured, but ncurses not set. Forcing ncurses mode.\n");
p->om = OUTPUT_NCURSES;
#else
write_errorf(error,
"Only 'ncurses' output method supports HTML colors "
"(required by gradient). "
"Cava was built without ncurses support, install ncurses(w) dev files "
"and rebuild.\n");
return 0;
#endif
}
// 0 to 9 and a to f
for (int i = 1; checkColor[i]; ++i) {
if (!isdigit(checkColor[i])) {
if (tolower(checkColor[i]) >= 'a' && tolower(checkColor[i]) <= 'f') {
validColor = 1;
} else {
validColor = 0;
break;
}
} else {
validColor = 1;
}
}
} else {
if ((strcmp(checkColor, "black") == 0) || (strcmp(checkColor, "red") == 0) ||
(strcmp(checkColor, "green") == 0) || (strcmp(checkColor, "yellow") == 0) ||
(strcmp(checkColor, "blue") == 0) || (strcmp(checkColor, "magenta") == 0) ||
(strcmp(checkColor, "cyan") == 0) || (strcmp(checkColor, "white") == 0) ||
(strcmp(checkColor, "default") == 0))
validColor = 1;
}
return validColor;
}
bool validate_colors(void *params, void *err) {
struct config_params *p = (struct config_params *)params;
struct error_s *error = (struct error_s *)err;
// validate: color
if (!validate_color(p->color, p, error)) {
write_errorf(error, "The value for 'foreground' is invalid. It can be either one of the 7 "
"named colors or a HTML color of the form '#xxxxxx'.\n");
return false;
}
// validate: background color
if (!validate_color(p->bcolor, p, error)) {
write_errorf(error, "The value for 'background' is invalid. It can be either one of the 7 "
"named colors or a HTML color of the form '#xxxxxx'.\n");
return false;
}
if (p->gradient) {
for (int i = 0; i < p->gradient_count; i++) {
if (!validate_color(p->gradient_colors[i], p, error)) {
write_errorf(
error,
"Gradient color %d is invalid. It must be HTML color of the form '#xxxxxx'.\n",
i + 1);
return false;
}
}
}
// In case color is not html format set bgcol and col to predefinedint values
p->col = -1;
if (strcmp(p->color, "black") == 0)
p->col = 0;
if (strcmp(p->color, "red") == 0)
p->col = 1;
if (strcmp(p->color, "green") == 0)
p->col = 2;
if (strcmp(p->color, "yellow") == 0)
p->col = 3;
if (strcmp(p->color, "blue") == 0)
p->col = 4;
if (strcmp(p->color, "magenta") == 0)
p->col = 5;
if (strcmp(p->color, "cyan") == 0)
p->col = 6;
if (strcmp(p->color, "white") == 0)
p->col = 7;
// default if invalid
// validate: background color
if (strcmp(p->bcolor, "black") == 0)
p->bgcol = 0;
if (strcmp(p->bcolor, "red") == 0)
p->bgcol = 1;
if (strcmp(p->bcolor, "green") == 0)
p->bgcol = 2;
if (strcmp(p->bcolor, "yellow") == 0)
p->bgcol = 3;
if (strcmp(p->bcolor, "blue") == 0)
p->bgcol = 4;
if (strcmp(p->bcolor, "magenta") == 0)
p->bgcol = 5;
if (strcmp(p->bcolor, "cyan") == 0)
p->bgcol = 6;
if (strcmp(p->bcolor, "white") == 0)
p->bgcol = 7;
// default if invalid
return true;
}
bool validate_config(struct config_params *p, struct error_s *error) {
// validate: output method
p->om = OUTPUT_NOT_SUPORTED;
if (strcmp(outputMethod, "ncurses") == 0) {
p->om = OUTPUT_NCURSES;
p->bgcol = -1;
#ifndef NCURSES
write_errorf(error, "cava was built without ncurses support, install ncursesw dev files "
"and run make clean && ./configure && make again\n");
return false;
#endif
}
if (strcmp(outputMethod, "noncurses") == 0) {
p->om = OUTPUT_NONCURSES;
p->bgcol = 0;
}
if (strcmp(outputMethod, "raw") == 0) { // raw:
p->om = OUTPUT_RAW;
p->bar_spacing = 0;
p->bar_width = 1;
// checking data format
p->is_bin = -1;
if (strcmp(p->data_format, "binary") == 0) {
p->is_bin = 1;
// checking bit format:
if (p->bit_format != 8 && p->bit_format != 16) {
write_errorf(
error,
"bit format %d is not supported, supported data formats are: '8' and '16'\n",
p->bit_format);
return false;
}
} else if (strcmp(p->data_format, "ascii") == 0) {
p->is_bin = 0;
if (p->ascii_range < 1) {
write_errorf(error, "ascii max value must be a positive integer\n");
return false;
}
} else {
write_errorf(error,
"data format %s is not supported, supported data formats are: 'binary' "
"and 'ascii'\n",
p->data_format);
return false;
}
}
if (p->om == OUTPUT_NOT_SUPORTED) {
#ifndef NCURSES
write_errorf(
error,
"output method %s is not supported, supported methods are: 'noncurses' and 'raw'\n",
outputMethod);
return false;
#endif
#ifdef NCURSES
write_errorf(error,
"output method %s is not supported, supported methods are: 'ncurses', "
"'noncurses' and 'raw'\n",
outputMethod);
return false;
#endif
}
// validate: output channels
p->stereo = -1;
if (strcmp(channels, "mono") == 0) {
p->stereo = 0;
if (strcmp(p->mono_option, "average") != 0 && strcmp(p->mono_option, "left") != 0 &&
strcmp(p->mono_option, "right") != 0) {
write_errorf(error,
"mono option %s is not supported, supported options are: 'average', "
"'left' or 'right'\n",
p->mono_option);
return false;
}
}
if (strcmp(channels, "stereo") == 0)
p->stereo = 1;
if (p->stereo == -1) {
write_errorf(
error,
"output channels %s is not supported, supported channelss are: 'mono' and 'stereo'\n",
channels);
return false;
}
// validate: bars
p->autobars = 1;
if (p->fixedbars > 0)
p->autobars = 0;
if (p->fixedbars > 256)
p->fixedbars = 256;
if (p->bar_width > 256)
p->bar_width = 256;
if (p->bar_width < 1)
p->bar_width = 1;
// validate: framerate
if (p->framerate < 0) {
write_errorf(error, "framerate can't be negative!\n");
return false;
}
// validate: colors
if (!validate_colors(p, error)) {
return false;
}
// validate: gravity
p->gravity = p->gravity / 100;
if (p->gravity < 0) {
p->gravity = 0;
}
// validate: integral
p->integral = p->integral / 100;
if (p->integral < 0) {
p->integral = 0;
} else if (p->integral > 1) {
p->integral = 1;
}
// validate: cutoff
if (p->lower_cut_off == 0)
p->lower_cut_off++;
if (p->lower_cut_off > p->upper_cut_off) {
write_errorf(error,
"lower cutoff frequency can't be higher than higher cutoff frequency\n");
return false;
}
// setting sens
p->sens = p->sens / 100;
// validate FFT buffer
if (p->FFTbufferSize >= 8 && p->FFTbufferSize <= 16) {
p->FFTbufferSize = pow(2, p->FFTbufferSize);
} else {
write_errorf(error, "FFT buffer is set in the exponent of 2 and must be between 8 - 16\n");
return false;
}
return true;
}
bool load_colors(struct config_params *p, dictionary *ini, void *err) {
struct error_s *error = (struct error_s *)err;
free(p->color);
free(p->bcolor);
p->color = strdup(iniparser_getstring(ini, "color:foreground", "default"));
p->bcolor = strdup(iniparser_getstring(ini, "color:background", "default"));
p->gradient = iniparser_getint(ini, "color:gradient", 0);
if (p->gradient) {
for (int i = 0; i < p->gradient_count; ++i) {
free(p->gradient_colors[i]);
}
p->gradient_count = iniparser_getint(ini, "color:gradient_count", 8);
if (p->gradient_count < 2) {
write_errorf(error, "\nAtleast two colors must be given as gradient!\n");
return false;
}
if (p->gradient_count > 8) {
write_errorf(error, "\nMaximum 8 colors can be specified as gradient!\n");
return false;
}
p->gradient_colors = (char **)malloc(sizeof(char *) * p->gradient_count * 9);
p->gradient_colors[0] =
strdup(iniparser_getstring(ini, "color:gradient_color_1", "#59cc33"));
p->gradient_colors[1] =
strdup(iniparser_getstring(ini, "color:gradient_color_2", "#80cc33"));
p->gradient_colors[2] =
strdup(iniparser_getstring(ini, "color:gradient_color_3", "#a6cc33"));
p->gradient_colors[3] =
strdup(iniparser_getstring(ini, "color:gradient_color_4", "#cccc33"));
p->gradient_colors[4] =
strdup(iniparser_getstring(ini, "color:gradient_color_5", "#cca633"));
p->gradient_colors[5] =
strdup(iniparser_getstring(ini, "color:gradient_color_6", "#cc8033"));
p->gradient_colors[6] =
strdup(iniparser_getstring(ini, "color:gradient_color_7", "#cc5933"));
p->gradient_colors[7] =
strdup(iniparser_getstring(ini, "color:gradient_color_8", "#cc3333"));
}
return true;
}
bool load_config(char configPath[PATH_MAX], struct config_params *p, bool colorsOnly,
struct error_s *error) {
FILE *fp;
// config: creating path to default config file
if (configPath[0] == '\0') {
char *configFile = "config";
char *configHome = getenv("XDG_CONFIG_HOME");
if (configHome != NULL) {
sprintf(configPath, "%s/%s/", configHome, PACKAGE);
} else {
configHome = getenv("HOME");
if (configHome != NULL) {
sprintf(configPath, "%s/%s/", configHome, ".config");
mkdir(configPath, 0777);
sprintf(configPath, "%s/%s/%s/", configHome, ".config", PACKAGE);
} else {
write_errorf(error, "No HOME found (ERR_HOMELESS), exiting...");
return false;
}
}
// config: create directory
mkdir(configPath, 0777);
// config: adding default filename file
strcat(configPath, configFile);
fp = fopen(configPath, "ab+");
if (fp) {
fclose(fp);
} else {
write_errorf(error, "Unable to access config '%s', exiting...\n", configPath);
return false;
}
} else { // opening specified file
fp = fopen(configPath, "rb+");
if (fp) {
fclose(fp);
} else {
write_errorf(error, "Unable to open file '%s', exiting...\n", configPath);
return false;
}
}
// config: parse ini
dictionary *ini;
ini = iniparser_load(configPath);
if (colorsOnly) {
if (!load_colors(p, ini, error)) {
return false;
}
return validate_colors(p, error);
}
#ifdef NCURSES
outputMethod = (char *)iniparser_getstring(ini, "output:method", "noncurses");
#endif
#ifndef NCURSES
outputMethod = (char *)iniparser_getstring(ini, "output:method", "noncurses");
#endif
p->monstercat = 1.5 * iniparser_getdouble(ini, "smoothing:monstercat", 0);
p->waves = iniparser_getint(ini, "smoothing:waves", 0);
p->integral = iniparser_getdouble(ini, "smoothing:integral", 77);
p->gravity = iniparser_getdouble(ini, "smoothing:gravity", 100);
p->ignore = iniparser_getdouble(ini, "smoothing:ignore", 0);
if (!load_colors(p, ini, error)) {
return false;
}
p->fixedbars = iniparser_getint(ini, "general:bars", 0);
p->bar_width = iniparser_getint(ini, "general:bar_width", 2);
p->bar_spacing = iniparser_getint(ini, "general:bar_spacing", 1);
p->framerate = iniparser_getint(ini, "general:framerate", 60);
p->sens = iniparser_getint(ini, "general:sensitivity", 100);
p->autosens = iniparser_getint(ini, "general:autosens", 1);
p->overshoot = iniparser_getint(ini, "general:overshoot", 20);
p->lower_cut_off = iniparser_getint(ini, "general:lower_cutoff_freq", 50);
p->upper_cut_off = iniparser_getint(ini, "general:higher_cutoff_freq", 10000);
p->FFTbufferSize = iniparser_getint(ini, "general:FFTbufferSize", 12);
// config: output
free(channels);
free(p->mono_option);
free(p->raw_target);
free(p->data_format);
channels = strdup(iniparser_getstring(ini, "output:channels", "stereo"));
p->mono_option = strdup(iniparser_getstring(ini, "output:mono_option", "average"));
p->raw_target = strdup(iniparser_getstring(ini, "output:raw_target", "/dev/stdout"));
p->data_format = strdup(iniparser_getstring(ini, "output:data_format", "binary"));
p->bar_delim = (char)iniparser_getint(ini, "output:bar_delimiter", 59);
p->frame_delim = (char)iniparser_getint(ini, "output:frame_delimiter", 10);
p->ascii_range = iniparser_getint(ini, "output:ascii_max_range", 1000);
p->bit_format = iniparser_getint(ini, "output:bit_format", 16);
// read & validate: eq
p->userEQ_keys = iniparser_getsecnkeys(ini, "eq");
if (p->userEQ_keys > 0) {
p->userEQ_enabled = 1;
p->userEQ = calloc(p->userEQ_keys + 1, sizeof(p->userEQ));
#ifndef LEGACYINIPARSER
const char *keys[p->userEQ_keys];
iniparser_getseckeys(ini, "eq", keys);
#endif
#ifdef LEGACYINIPARSER
char **keys = iniparser_getseckeys(ini, "eq");
#endif
for (int sk = 0; sk < p->userEQ_keys; sk++) {
p->userEQ[sk] = iniparser_getdouble(ini, keys[sk], 1);
}
} else {
p->userEQ_enabled = 0;
}
free(p->audio_source);
char *input_method_name;
for (size_t i = 0; i < ARRAY_SIZE(default_methods); i++) {
enum input_method method = default_methods[i];
if (has_input_method[method]) {
input_method_name =
(char *)iniparser_getstring(ini, "input:method", input_method_names[method]);
}
}
p->im = input_method_by_name(input_method_name);
switch (p->im) {
#ifdef ALSA
case INPUT_ALSA:
p->audio_source = strdup(iniparser_getstring(ini, "input:source", "hw:Loopback,1"));
break;
#endif
case INPUT_FIFO:
p->audio_source = strdup(iniparser_getstring(ini, "input:source", "/tmp/mpd.fifo"));
p->fifoSample = iniparser_getint(ini, "input:sample_rate", 44100);
p->fifoSampleBits = iniparser_getint(ini, "input:sample_bits", 16);
break;
#ifdef PULSE
case INPUT_PULSE:
p->audio_source = strdup(iniparser_getstring(ini, "input:source", "auto"));
break;
#endif
#ifdef SNDIO
case INPUT_SNDIO:
p->audio_source = strdup(iniparser_getstring(ini, "input:source", SIO_DEVANY));
break;
#endif
case INPUT_SHMEM:
p->audio_source =
strdup(iniparser_getstring(ini, "input:source", "/squeezelite-00:00:00:00:00:00"));
break;
#ifdef PORTAUDIO
case INPUT_PORTAUDIO:
p->audio_source = strdup(iniparser_getstring(ini, "input:source", "auto"));
break;
#endif
case INPUT_MAX: {
char supported_methods[255] = "";
for (int i = 0; i < INPUT_MAX; i++) {
if (has_input_method[i]) {
strcat(supported_methods, "'");
strcat(supported_methods, input_method_names[i]);
strcat(supported_methods, "' ");
}
}
write_errorf(error, "input method '%s' is not supported, supported methods are: %s\n",
input_method_name, supported_methods);
return false;
}
default:
write_errorf(error, "cava was built without '%s' input support\n",
input_method_names[p->im]);
return false;
}
bool result = validate_config(p, error);
iniparser_freedict(ini);
return result;
}