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cava.c
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#include <locale.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#else
#include <stdlib.h>
#endif
#include <fcntl.h>
#include <math.h>
#ifndef M_PI
#define M_PI 3.1415926535897932385
#endif
#include <stdio.h>
#include <stdlib.h>
#ifndef _MSC_VER
#include <ctype.h>
#include <dirent.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
#endif
#ifdef _MSC_VER
#include "input/winscap.h"
#include <windows.h>
#define PATH_MAX 260
#define PACKAGE "cava"
#define _CRT_SECURE_NO_WARNINGS 1
#endif // _MSC_VER
#include <signal.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include "cavacore.h"
#include "config.h"
#include "debug.h"
#include "util.h"
#ifdef SDL
#include "output/sdl_cava.h"
#endif
#ifdef SDL_GLSL
#include "output/sdl_glsl.h"
#endif
#include "input/common.h"
#include "output/terminal_noncurses.h"
#ifndef _MSC_VER
#ifdef NCURSES
#include "output/terminal_bcircle.h"
#include "output/terminal_ncurses.h"
#include <curses.h>
#endif
#include "output/noritake.h"
#include "output/raw.h"
#include "input/alsa.h"
#include "input/fifo.h"
#include "input/pipewire.h"
#include "input/portaudio.h"
#include "input/pulse.h"
#include "input/shmem.h"
#include "input/sndio.h"
#endif
#ifdef __GNUC__
// curses.h or other sources may already define
#undef GCC_UNUSED
#define GCC_UNUSED __attribute__((unused))
#else
#define GCC_UNUSED /* nothing */
#endif
// used by sig handler
// needs to know output mode in order to clean up terminal
int output_mode;
// whether we should reload the config or not
int should_reload = 0;
// whether we should only reload colors or not
int reload_colors = 0;
// whether we should quit
int should_quit = 0;
// these variables are used only in main, but making them global
// will allow us to not free them on exit without ASan complaining
struct config_params p;
// general: cleanup
void cleanup(void) {
if (output_mode == OUTPUT_NCURSES) {
#ifdef NCURSES
cleanup_terminal_ncurses();
#else
;
#endif
} else if (output_mode == OUTPUT_NONCURSES) {
cleanup_terminal_noncurses();
} else if (output_mode == OUTPUT_SDL) {
#ifdef SDL
cleanup_sdl();
#else
;
#endif
#ifdef SDL_GLSL
} else if (output_mode == OUTPUT_SDL_GLSL) {
cleanup_sdl_glsl();
#else
;
#endif
}
}
// general: handle signals
void sig_handler(int sig_no) {
#ifndef _MSC_VER
if (sig_no == SIGUSR1) {
should_reload = 1;
return;
}
if (sig_no == SIGUSR2) {
reload_colors = 1;
return;
}
#endif
cleanup();
if (sig_no == SIGINT) {
printf("CTRL-C pressed -- goodbye\n");
}
signal(sig_no, SIG_DFL);
raise(sig_no);
}
#ifdef ALSA
static bool is_loop_device_for_sure(const char *text) {
const char *const LOOPBACK_DEVICE_PREFIX = "hw:Loopback,";
return strncmp(text, LOOPBACK_DEVICE_PREFIX, strlen(LOOPBACK_DEVICE_PREFIX)) == 0;
}
static bool directory_exists(const char *path) {
DIR *const dir = opendir(path);
if (dir == NULL)
return false;
closedir(dir);
return true;
}
#endif
float *monstercat_filter(float *bars, int number_of_bars, int waves, double monstercat) {
int z;
// process [smoothing]: monstercat-style "average"
int m_y, de;
if (waves > 0) {
for (z = 0; z < number_of_bars; z++) { // waves
bars[z] = bars[z] / 1.25;
// if (bars[z] < 1) bars[z] = 1;
for (m_y = z - 1; m_y >= 0; m_y--) {
de = z - m_y;
bars[m_y] = max(bars[z] - pow(de, 2), bars[m_y]);
}
for (m_y = z + 1; m_y < number_of_bars; m_y++) {
de = m_y - z;
bars[m_y] = max(bars[z] - pow(de, 2), bars[m_y]);
}
}
} else if (monstercat > 0) {
for (z = 0; z < number_of_bars; z++) {
// if (bars[z] < 1)bars[z] = 1;
for (m_y = z - 1; m_y >= 0; m_y--) {
de = z - m_y;
bars[m_y] = max(bars[z] / pow(monstercat * 1.5, de), bars[m_y]);
}
for (m_y = z + 1; m_y < number_of_bars; m_y++) {
de = m_y - z;
bars[m_y] = max(bars[z] / pow(monstercat * 1.5, de), bars[m_y]);
}
}
}
return bars;
}
// general: entry point
int main(int argc, char **argv) {
#ifndef _MSC_VER
// general: console title
printf("%c]0;%s%c", '\033', PACKAGE, '\007');
#endif // !_MSC_VER
// general: handle command-line arguments
char configPath[PATH_MAX];
configPath[0] = '\0';
#ifdef _MSC_VER
if (!SetConsoleCtrlHandler(sig_handler, TRUE)) {
fprintf(stderr, "ERROR: Could not set control handler");
exit(EXIT_FAILURE);
}
#else
// general: handle Ctrl+C
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_handler = &sig_handler;
sigaction(SIGINT, &action, NULL);
sigaction(SIGTERM, &action, NULL);
sigaction(SIGUSR1, &action, NULL);
sigaction(SIGUSR2, &action, NULL);
#endif
char *usage = "\n\
Usage : " PACKAGE " [options]\n\
Visualize audio input in terminal. \n\
\n\
Options:\n\
-p path to config file\n\
-v print version\n\
\n\
Keys:\n\
Up Increase sensitivity\n\
Down Decrease sensitivity\n\
Left Decrease number of bars\n\
Right Increase number of bars\n\
r Reload config\n\
c Reload colors only\n\
f Cycle foreground color\n\
b Cycle background color\n\
q Quit\n\
\n\
as of 0.4.0 all options are specified in config file, see in '/home/username/.config/cava/' \n";
#ifndef _MSC_VER
int c;
while ((c = getopt(argc, argv, "p:vh")) != -1) {
switch (c) {
case 'p': // argument: fifo path
snprintf(configPath, sizeof(configPath), "%s", optarg);
break;
case 'h': // argument: print usage
printf("%s", usage);
return 1;
case '?': // argument: print usage
printf("%s", usage);
return 1;
case 'v': // argument: print version
printf(PACKAGE " " VERSION "\n");
return 0;
default: // argument: no arguments; exit
abort();
}
}
#else
if (argc > 1)
snprintf(configPath, sizeof(configPath), "%s", argv[1]);
#endif
// general: main loop
while (1) {
debug("loading config\n");
// config: load
struct error_s error;
error.length = 0;
if (!load_config(configPath, &p, 0, &error)) {
fprintf(stderr, "Error loading config. %s", error.message);
exit(EXIT_FAILURE);
}
int inAtty = 0;
output_mode = p.output;
#ifndef _MSC_VER
if (output_mode == OUTPUT_NCURSES || output_mode == OUTPUT_NONCURSES) {
// Check if we're running in a tty
if (strncmp(ttyname(0), "/dev/tty", 8) == 0 || strcmp(ttyname(0), "/dev/console") == 0)
inAtty = 1;
// in macos vitual terminals are called ttys(xyz) and there are no ttys
if (strncmp(ttyname(0), "/dev/ttys", 9) == 0)
inAtty = 0;
if (inAtty) {
// checking if cava psf font is installed in FONTDIR
FILE *font_file;
font_file = fopen(FONTDIR "/cava.psf", "r");
if (font_file) {
fclose(font_file);
system("setfont " FONTDIR "/cava.psf >/dev/null 2>&1");
} else {
// if not it might still be available, we dont know, must try
system("setfont cava.psf >/dev/null 2>&1");
}
if (p.disable_blanking)
system("setterm -blank 0");
}
// We use unicode block characters to draw the bars and
// the locale var LANG must be set to use unicode chars.
// For some reason this var can't be retrieved with
// setlocale(LANG, NULL), so we get it with getenv.
// Also we can't set it with setlocale(LANG "") so we
// must set LC_ALL instead.
// Attempting to set to en_US if not set, if that lang
// is not installed and LANG is not set there will be
// no output, for more info see #109 #344
if (!getenv("LANG"))
setlocale(LC_ALL, "en_US.utf8");
else
setlocale(LC_ALL, "");
}
#endif
// input: init
struct audio_data audio;
memset(&audio, 0, sizeof(audio));
audio.source = malloc(1 + strlen(p.audio_source));
strcpy(audio.source, p.audio_source);
audio.format = -1;
audio.rate = 0;
audio.samples_counter = 0;
audio.channels = 2;
audio.IEEE_FLOAT = 0;
audio.input_buffer_size = BUFFER_SIZE * audio.channels;
audio.cava_buffer_size = audio.input_buffer_size * 8;
audio.cava_in = (double *)malloc(audio.cava_buffer_size * sizeof(double));
memset(audio.cava_in, 0, sizeof(int) * audio.cava_buffer_size);
audio.terminate = 0;
debug("starting audio thread\n");
pthread_t p_thread;
int timeout_counter = 0;
int total_bar_height = 0;
struct timespec timeout_timer = {.tv_sec = 0, .tv_nsec = 1000000};
int thr_id GCC_UNUSED;
pthread_mutex_init(&audio.lock, NULL);
switch (p.input) {
#ifndef _MSC_VER
#ifdef ALSA
case INPUT_ALSA:
if (is_loop_device_for_sure(audio.source)) {
if (directory_exists("/sys/")) {
if (!directory_exists("/sys/module/snd_aloop/")) {
cleanup();
fprintf(stderr,
"Linux kernel module \"snd_aloop\" does not seem to be loaded.\n"
"Maybe run \"sudo modprobe snd_aloop\".\n");
exit(EXIT_FAILURE);
}
}
}
thr_id = pthread_create(&p_thread, NULL, input_alsa, (void *)&audio);
break;
#endif
case INPUT_FIFO:
audio.rate = p.samplerate;
audio.format = p.samplebits;
thr_id = pthread_create(&p_thread, NULL, input_fifo, (void *)&audio);
break;
#ifdef PULSE
case INPUT_PULSE:
audio.format = 16;
audio.rate = 44100;
if (strcmp(audio.source, "auto") == 0) {
getPulseDefaultSink((void *)&audio);
}
thr_id = pthread_create(&p_thread, NULL, input_pulse, (void *)&audio);
break;
#endif
#ifdef SNDIO
case INPUT_SNDIO:
audio.format = 16;
audio.rate = 44100;
thr_id = pthread_create(&p_thread, NULL, input_sndio, (void *)&audio);
break;
#endif
case INPUT_SHMEM:
audio.format = 16;
thr_id = pthread_create(&p_thread, NULL, input_shmem, (void *)&audio);
break;
#ifdef PORTAUDIO
case INPUT_PORTAUDIO:
audio.format = 16;
audio.rate = 44100;
thr_id = pthread_create(&p_thread, NULL, input_portaudio, (void *)&audio);
break;
#endif
#ifdef PIPEWIRE
case INPUT_PIPEWIRE:
audio.format = p.samplebits;
audio.rate = p.samplerate;
thr_id = pthread_create(&p_thread, NULL, input_pipewire, (void *)&audio);
break;
#endif
#endif
#ifdef _MSC_VER
case INPUT_WINSCAP:
thr_id = pthread_create(&p_thread, NULL, input_winscap, (void *)&audio);
break;
#endif
default:
exit(EXIT_FAILURE); // Can't happen.
}
timeout_counter = 0;
while (true) {
#ifdef _MSC_VER
Sleep(1);
#else
nanosleep(&timeout_timer, NULL);
#endif
pthread_mutex_lock(&audio.lock);
if (audio.format != -1 && audio.rate != 0)
break;
pthread_mutex_unlock(&audio.lock);
timeout_counter++;
if (timeout_counter > 2000) {
cleanup();
fprintf(stderr, "could not get rate and/or format, problems with audio thread? "
"quiting...\n");
exit(EXIT_FAILURE);
}
}
pthread_mutex_unlock(&audio.lock);
debug("got format: %d and rate %d\n", audio.format, audio.rate);
int audio_channels = audio.channels;
if (p.upper_cut_off > audio.rate / 2) {
cleanup();
fprintf(stderr, "higher cuttoff frequency can't be higher than sample rate / 2");
exit(EXIT_FAILURE);
}
int *bars;
int *previous_frame;
float *bars_left, *bars_right;
double *cava_out;
float *bars_raw;
int height, lines, width, remainder, fp;
int *dimension_bar, *dimension_value;
if (p.orientation == ORIENT_LEFT || p.orientation == ORIENT_RIGHT) {
dimension_bar = &height;
dimension_value = &width;
} else {
dimension_bar = &width;
dimension_value = &height;
}
#ifdef SDL
// output: start sdl mode
if (output_mode == OUTPUT_SDL) {
init_sdl_window(p.sdl_width, p.sdl_height, p.sdl_x, p.sdl_y, p.sdl_full_screen);
height = p.sdl_height;
width = p.sdl_width;
}
#endif
#ifdef SDL_GLSL
if (output_mode == OUTPUT_SDL_GLSL) {
init_sdl_glsl_window(p.sdl_width, p.sdl_height, p.sdl_x, p.sdl_y, p.sdl_full_screen,
p.vertex_shader, p.fragment_shader);
height = p.sdl_height;
width = p.sdl_width;
}
#endif
bool reloadConf = false;
while (!reloadConf) { // jumping back to this loop means that you resized the screen
// frequencies on x axis require a bar width of four or more
if (p.xaxis == FREQUENCY && p.bar_width < 4)
p.bar_width = 4;
switch (output_mode) {
#ifdef NCURSES
// output: start ncurses mode
case OUTPUT_NCURSES:
init_terminal_ncurses(p.color, p.bcolor, p.col, p.bgcol, p.gradient,
p.gradient_count, p.gradient_colors, &width, &lines);
if (p.xaxis != NONE)
lines--;
height = lines;
*dimension_value *=
8; // we have 8 times as much height due to using 1/8 block characters
break;
#endif
#ifdef SDL
// output: get sdl window size
case OUTPUT_SDL:
init_sdl_surface(&width, &height, p.color, p.bcolor, p.gradient, p.gradient_count,
p.gradient_colors);
break;
#endif
#ifdef SDL_GLSL
// output: get sdl window size
case OUTPUT_SDL_GLSL:
init_sdl_glsl_surface(&width, &height, p.color, p.bcolor, p.bar_width,
p.bar_spacing, p.gradient, p.gradient_count,
p.gradient_colors);
break;
#endif
case OUTPUT_NONCURSES:
get_terminal_dim_noncurses(&width, &lines);
if (p.xaxis != NONE)
lines--;
init_terminal_noncurses(inAtty, p.color, p.bcolor, p.col, p.bgcol, p.gradient,
p.gradient_count, p.gradient_colors, width, lines,
p.bar_width);
height = lines * 8;
break;
#ifndef _MSC_VER
case OUTPUT_RAW:
case OUTPUT_NORITAKE:
if (strcmp(p.raw_target, "/dev/stdout") != 0) {
int fptest;
// checking if file exists
if (access(p.raw_target, F_OK) != -1) {
// file exists, testopening in case it's a fifo
fptest = open(p.raw_target, O_RDONLY | O_NONBLOCK, 0644);
if (fptest == -1) {
fprintf(stderr, "could not open file %s for writing\n", p.raw_target);
exit(1);
}
} else {
printf("creating fifo %s\n", p.raw_target);
if (mkfifo(p.raw_target, 0664) == -1) {
fprintf(stderr, "could not create fifo %s\n", p.raw_target);
exit(1);
}
// fifo needs to be open for reading in order to write to it
fptest = open(p.raw_target, O_RDONLY | O_NONBLOCK, 0644);
}
fp = open(p.raw_target, O_WRONLY | O_NONBLOCK | O_CREAT, 0644);
} else {
fp = fileno(stdout);
}
if (fp == -1) {
fprintf(stderr, "could not open file %s for writing\n", p.raw_target);
exit(1);
}
#ifndef NDEBUG
debug("open file %s for writing raw output\n", p.raw_target);
#endif
// width must be hardcoded for raw output.
width = 512;
p.bar_width = 1; // not used
p.bar_spacing = 1;
if (strcmp(p.data_format, "ascii") != 0) {
// "binary" or "noritake"
height = pow(2, p.bit_format) - 1;
} else {
height = p.ascii_range;
}
break;
#endif
default:
exit(EXIT_FAILURE); // Can't happen.
}
// handle for user setting too many bars
if (p.fixedbars) {
p.autobars = 0;
if (p.fixedbars * p.bar_width + p.fixedbars * p.bar_spacing - p.bar_spacing > width)
p.autobars = 1;
}
// getting numbers of bars
int number_of_bars = p.fixedbars;
if (p.autobars == 1)
number_of_bars = (*dimension_bar + p.bar_spacing) / (p.bar_width + p.bar_spacing);
if (number_of_bars <= 1) {
number_of_bars = 1; // must have at least 1 bars
if (p.stereo) {
number_of_bars = 2; // stereo have at least 2 bars
}
}
if (number_of_bars > 512)
number_of_bars = 512; // cant have more than 512 bars on 44100 rate
int output_channels = 1;
if (p.stereo) { // stereo must have even numbers of bars
if (audio.channels == 1) {
fprintf(stderr,
"stereo output configured, but only one channel in audio input.\n");
exit(1);
}
output_channels = 2;
if (number_of_bars % 2 != 0)
number_of_bars--;
}
// checks if there is stil extra room, will use this to center
remainder = (*dimension_bar - number_of_bars * p.bar_width -
number_of_bars * p.bar_spacing + p.bar_spacing) /
2;
if (remainder < 0)
remainder = 0;
#ifndef NDEBUG
debug("height: %d width: %d dimension_bar: %d dimension_value: %d bars:%d bar width: "
"%d remainder: %d\n",
height, width, *dimension_bar, *dimension_value, number_of_bars, p.bar_width,
remainder);
#endif
double userEQ_keys_to_bars_ratio;
if (p.userEQ_enabled && (number_of_bars / output_channels > 0)) {
userEQ_keys_to_bars_ratio = (double)(((double)p.userEQ_keys) /
((double)(number_of_bars / output_channels)));
}
struct cava_plan *plan =
cava_init(number_of_bars / output_channels, audio.rate, audio.channels, p.autosens,
p.noise_reduction, p.lower_cut_off, p.upper_cut_off);
if (plan->status == -1) {
cleanup();
fprintf(stderr, "Error initalizing cava . %s", plan->error_message);
exit(EXIT_FAILURE);
}
bars_left = (float *)malloc(number_of_bars / output_channels * sizeof(float));
bars_right = (float *)malloc(number_of_bars / output_channels * sizeof(float));
memset(bars_left, 0, sizeof(float) * number_of_bars / output_channels);
memset(bars_right, 0, sizeof(float) * number_of_bars / output_channels);
bars = (int *)malloc(number_of_bars * sizeof(int));
bars_raw = (float *)malloc(number_of_bars * sizeof(float));
previous_frame = (int *)malloc(number_of_bars * sizeof(int));
cava_out = (double *)malloc(number_of_bars * audio.channels / output_channels *
sizeof(double));
memset(bars, 0, sizeof(int) * number_of_bars);
memset(bars_raw, 0, sizeof(float) * number_of_bars);
memset(previous_frame, 0, sizeof(int) * number_of_bars);
memset(cava_out, 0, sizeof(double) * number_of_bars * audio.channels / output_channels);
int x_axis_info = 0;
// process: calculate x axis values
if (p.xaxis != NONE) {
x_axis_info = 1;
double cut_off_frequency;
if (output_mode == OUTPUT_NONCURSES) {
printf("\r\033[%dB", lines + 1);
if (remainder)
printf("\033[%dC", remainder);
}
for (int n = 0; n < number_of_bars; n++) {
if (p.stereo) {
if (n < number_of_bars / 2)
cut_off_frequency = plan->cut_off_frequency[number_of_bars / 2 - 1 - n];
else
cut_off_frequency = plan->cut_off_frequency[n - number_of_bars / 2];
} else {
cut_off_frequency = plan->cut_off_frequency[n];
}
float freq_kilohz = cut_off_frequency / 1000;
int freq_floor = cut_off_frequency;
if (output_mode == OUTPUT_NCURSES) {
#ifdef NCURSES
if (cut_off_frequency < 1000)
mvprintw(lines, n * (p.bar_width + p.bar_spacing) + remainder, "%-4d",
freq_floor);
else if (cut_off_frequency > 1000 && cut_off_frequency < 10000)
mvprintw(lines, n * (p.bar_width + p.bar_spacing) + remainder, "%.2f",
freq_kilohz);
else
mvprintw(lines, n * (p.bar_width + p.bar_spacing) + remainder, "%.1f",
freq_kilohz);
#endif
} else if (output_mode == OUTPUT_NONCURSES) {
if (cut_off_frequency < 1000)
printf("%-4d", freq_floor);
else if (cut_off_frequency > 1000 && cut_off_frequency < 10000)
printf("%.2f", freq_kilohz);
else
printf("%.1f", freq_kilohz);
if (n < number_of_bars - 1)
printf("\033[%dC", p.bar_width + p.bar_spacing - 4);
}
}
printf("\r\033[%dA", lines + 1);
}
bool resizeTerminal = false;
int frame_time_msec = (1 / (float)p.framerate) * 1000;
struct timespec framerate_timer = {.tv_sec = 0, .tv_nsec = 0};
if (p.framerate <= 1) {
framerate_timer.tv_sec = frame_time_msec / 1000;
} else {
framerate_timer.tv_sec = 0;
framerate_timer.tv_nsec = frame_time_msec * 1e6;
}
#ifdef _MSC_VER
LARGE_INTEGER frequency; // ticks per second
LARGE_INTEGER t1, t2; // ticks
double elapsedTime;
QueryPerformanceFrequency(&frequency);
#endif // _MSC_VER
int sleep_counter = 0;
bool silence = false;
char ch = '\0';
#ifndef NDEBUG
int maxvalue = 0;
int minvalue = 0;
#endif
struct timespec sleep_mode_timer = {.tv_sec = 1, .tv_nsec = 0};
int total_frames = 0;
while (!resizeTerminal) {
// general: keyboard controls
#ifdef NCURSES
if (output_mode == OUTPUT_NCURSES)
ch = getch();
#endif
#ifndef _MSC_VER
if (output_mode == OUTPUT_NONCURSES)
read(0, &ch, sizeof(ch));
#endif
switch (ch) {
case 65: // key up
p.sens = p.sens * 1.05;
break;
case 66: // key down
p.sens = p.sens * 0.95;
break;
case 68: // key right
p.bar_width++;
resizeTerminal = true;
break;
case 67: // key left
if (p.bar_width > 1)
p.bar_width--;
resizeTerminal = true;
break;
case 'r': // reload config
should_reload = 1;
break;
case 'c': // reload colors
reload_colors = 1;
break;
case 'f': // change forground color
if (p.col < 7)
p.col++;
else
p.col = 0;
resizeTerminal = true;
break;
case 'b': // change backround color
if (p.bgcol < 7)
p.bgcol++;
else
p.bgcol = 0;
resizeTerminal = true;
break;
case 'q':
should_reload = 1;
should_quit = 1;
}
ch = 0;
if (should_reload) {
reloadConf = true;
resizeTerminal = true;
should_reload = 0;
}
if (reload_colors) {
struct error_s error;
error.length = 0;
if (!load_config(configPath, (void *)&p, 1, &error)) {
cleanup();
fprintf(stderr, "Error loading config. %s", error.message);
exit(EXIT_FAILURE);
}
resizeTerminal = true;
reload_colors = 0;
}
#ifndef NDEBUG
// clear();
#ifndef _MSC_VER
refresh();
#endif
#endif
// process: check if input is present
silence = true;
for (int n = 0; n < audio.input_buffer_size * 4; n++) {
if (audio.cava_in[n]) {
silence = false;
break;
}
}
#ifndef _MSC_VER
if (output_mode != OUTPUT_SDL) {
if (p.sleep_timer) {
if (silence && sleep_counter <= p.framerate * p.sleep_timer)
sleep_counter++;
else if (!silence)
sleep_counter = 0;
if (sleep_counter > p.framerate * p.sleep_timer) {
#ifndef NDEBUG
printw("no sound detected for 30 sec, going to sleep mode\n");
#endif
nanosleep(&sleep_mode_timer, NULL);
continue;
}
}
}
#endif // !_MSC_VER
// process: execute cava
pthread_mutex_lock(&audio.lock);
cava_execute(audio.cava_in, audio.samples_counter, cava_out, plan);
if (audio.samples_counter > 0) {
audio.samples_counter = 0;
}
pthread_mutex_unlock(&audio.lock);
for (int n = 0; n < (number_of_bars / output_channels) * audio_channels; n++) {
if (output_mode != OUTPUT_SDL_GLSL) {
cava_out[n] *= *dimension_value;
}
cava_out[n] *= p.sens;
if (output_mode == OUTPUT_SDL_GLSL) {
if (cava_out[n] > 1.0)
cava_out[n] = 1.0;
else if (cava_out[n] < 0.0)
cava_out[n] = 0.0;
}
}
if (audio_channels == 2) {
for (int n = 0; n < number_of_bars / output_channels; n++) {
if (p.userEQ_enabled)
cava_out[n] *=
p.userEQ[(int)floor(((double)n) * userEQ_keys_to_bars_ratio)];
bars_left[n] = cava_out[n];
}
for (int n = 0; n < number_of_bars / output_channels; n++) {
if (p.userEQ_enabled)
cava_out[n + number_of_bars / output_channels] *=
p.userEQ[(int)floor(((double)n) * userEQ_keys_to_bars_ratio)];
bars_right[n] = cava_out[n + number_of_bars / output_channels];
}
} else {
for (int n = 0; n < number_of_bars; n++) {
if (p.userEQ_enabled)
cava_out[n] *=
p.userEQ[(int)floor(((double)n) * userEQ_keys_to_bars_ratio)];
bars_raw[n] = cava_out[n];
}
}
// process [filter]
if (p.monstercat) {
if (audio_channels == 2) {
bars_left = monstercat_filter(bars_left, number_of_bars / output_channels,
p.waves, p.monstercat);
bars_right = monstercat_filter(bars_right, number_of_bars / output_channels,
p.waves, p.monstercat);
} else {
bars_raw =
monstercat_filter(bars_raw, number_of_bars, p.waves, p.monstercat);
}
}
if (audio_channels == 2) {
if (p.stereo) {
// mirroring stereo channels
for (int n = 0; n < number_of_bars; n++) {
if (n < number_of_bars / 2) {
if (p.reverse) {
bars_raw[n] = bars_left[n];
} else {
bars_raw[n] = bars_left[number_of_bars / 2 - n - 1];
}
} else {
if (p.reverse) {
bars_raw[n] = bars_right[number_of_bars - n - 1];
} else {
bars_raw[n] = bars_right[n - number_of_bars / 2];
}
}
}
} else {
// stereo mono output
for (int n = 0; n < number_of_bars; n++) {
if (p.reverse) {
if (p.mono_opt == AVERAGE) {
bars_raw[number_of_bars - n - 1] =
(bars_left[n] + bars_right[n]) / 2;
} else if (p.mono_opt == LEFT) {
bars_raw[number_of_bars - n - 1] = bars_left[n];
} else if (p.mono_opt == RIGHT) {
bars_raw[number_of_bars - n - 1] = bars_right[n];
}
} else {
if (p.mono_opt == AVERAGE) {
bars_raw[n] = (bars_left[n] + bars_right[n]) / 2;
} else if (p.mono_opt == LEFT) {
bars_raw[n] = bars_left[n];
} else if (p.mono_opt == RIGHT) {
bars_raw[n] = bars_right[n];
}
}
}
}
}
#ifdef SDL_GLSL
int re_paint = 0;
#endif
for (int n = 0; n < number_of_bars; n++) {
bars[n] = bars_raw[n];
// zero values causes divided by zero segfault (if not raw)
if (output_mode != OUTPUT_RAW && output_mode != OUTPUT_NORITAKE && bars[n] < 1)
bars[n] = 1;
#ifdef SDL_GLSL
if (output_mode == OUTPUT_SDL_GLSL)
bars[n] =
bars_raw[n] * 1000; // values are 0-1, only used to check for changes
if (bars[n] != previous_frame[n])
re_paint = 1;
#endif
#ifndef NDEBUG
mvprintw(n, 0, "%d: f:%f->%f (%d->%d), eq:\
%15e, peak:%d \n",
n, plan->cut_off_frequency[n], plan->cut_off_frequency[n + 1],
plan->FFTbuffer_lower_cut_off[n], plan->FFTbuffer_upper_cut_off[n],
plan->eq[n], bars[n]);