NetBSD/usr.bin/aiomixer/main.c

575 lines
13 KiB
C

/* $NetBSD: main.c,v 1.4 2021/07/18 11:45:31 nia Exp $ */
/*-
* Copyright (c) 2021 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nia Alarie.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/audioio.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <paths.h>
#include <curses.h>
#include <stdlib.h>
#include <err.h>
#include "app.h"
#include "draw.h"
#include "parse.h"
static void process_device_select(struct aiomixer *, unsigned int);
static void open_device(struct aiomixer *, const char *);
static void __dead usage(void);
static int adjust_level(int, int);
static int select_class(struct aiomixer *, unsigned int);
static int select_control(struct aiomixer *, unsigned int);
static void slide_control(struct aiomixer *, struct aiomixer_control *, bool);
static int toggle_set(struct aiomixer *);
static void step_up(struct aiomixer *);
static void step_down(struct aiomixer *);
static int read_key(struct aiomixer *, int);
static void __dead
usage(void)
{
fputs("aiomixer [-u] [-d device]\n", stderr);
exit(1);
}
static int
select_class(struct aiomixer *aio, unsigned int n)
{
struct aiomixer_class *class;
unsigned i;
if (n >= aio->numclasses)
return -1;
class = &aio->classes[n];
aio->widgets_resized = true;
aio->class_scroll_y = 0;
aio->curcontrol = 0;
aio->curclass = n;
for (i = 0; i < class->numcontrols; ++i) {
class->controls[i].setindex = -1;
draw_control(aio, &class->controls[i], false);
}
draw_classbar(aio);
return 0;
}
static int
select_control(struct aiomixer *aio, unsigned int n)
{
struct aiomixer_class *class;
struct aiomixer_control *lastcontrol;
struct aiomixer_control *control;
class = &aio->classes[aio->curclass];
if (n >= class->numcontrols)
return -1;
lastcontrol = &class->controls[aio->curcontrol];
lastcontrol->setindex = -1;
draw_control(aio, lastcontrol, false);
control = &class->controls[n];
aio->curcontrol = n;
control->setindex = 0;
draw_control(aio, control, true);
if (aio->class_scroll_y > control->widget_y) {
aio->class_scroll_y = control->widget_y;
aio->widgets_resized = true;
}
if ((control->widget_y + control->height) >
((getmaxy(stdscr) - 4) + aio->class_scroll_y)) {
aio->class_scroll_y = control->widget_y;
aio->widgets_resized = true;
}
return 0;
}
static int
adjust_level(int level, int delta)
{
if (level > (AUDIO_MAX_GAIN - delta))
return AUDIO_MAX_GAIN;
if (delta < 0 && level < (AUDIO_MIN_GAIN + (-delta)))
return AUDIO_MIN_GAIN;
return level + delta;
}
static void
slide_control(struct aiomixer *aio,
struct aiomixer_control *control, bool right)
{
struct mixer_devinfo *info = &control->info;
struct mixer_ctrl value;
unsigned char *level;
int i, delta;
int cur_index = 0;
if (info->type != AUDIO_MIXER_SET) {
value.dev = info->index;
value.type = info->type;
if (info->type == AUDIO_MIXER_VALUE)
value.un.value.num_channels = info->un.v.num_channels;
if (ioctl(aio->fd, AUDIO_MIXER_READ, &value) < 0)
err(EXIT_FAILURE, "failed to read mixer control");
}
switch (info->type) {
case AUDIO_MIXER_VALUE:
delta = right ? info->un.v.delta : -info->un.v.delta;
/*
* work around strange problem where the level can be
* increased but not decreased, seen with uaudio(4)
*/
if (delta < 16)
delta *= 2;
if (aio->channels_unlocked) {
level = &value.un.value.level[control->setindex];
*level = (unsigned char)adjust_level(*level, delta);
} else {
for (i = 0; i < value.un.value.num_channels; ++i) {
level = &value.un.value.level[i];
*level = (unsigned char)adjust_level(*level, delta);
}
}
break;
case AUDIO_MIXER_ENUM:
for (i = 0; i < info->un.e.num_mem; ++i) {
if (info->un.e.member[i].ord == value.un.ord) {
cur_index = i;
break;
}
}
if (right) {
value.un.ord = cur_index < (info->un.e.num_mem - 1) ?
info->un.e.member[cur_index + 1].ord :
info->un.e.member[0].ord;
} else {
value.un.ord = cur_index > 0 ?
info->un.e.member[cur_index - 1].ord :
info->un.e.member[control->info.un.e.num_mem - 1].ord;
}
break;
case AUDIO_MIXER_SET:
if (right) {
control->setindex =
control->setindex < (info->un.s.num_mem - 1) ?
control->setindex + 1 : 0;
} else {
control->setindex = control->setindex > 0 ?
control->setindex - 1 :
control->info.un.s.num_mem - 1;
}
break;
}
if (info->type != AUDIO_MIXER_SET) {
if (ioctl(aio->fd, AUDIO_MIXER_WRITE, &value) < 0)
err(EXIT_FAILURE, "failed to adjust mixer control");
}
draw_control(aio, control, true);
}
static int
toggle_set(struct aiomixer *aio)
{
struct mixer_ctrl ctrl;
struct aiomixer_class *class = &aio->classes[aio->curclass];
struct aiomixer_control *control = &class->controls[aio->curcontrol];
ctrl.dev = control->info.index;
ctrl.type = control->info.type;
if (control->info.type != AUDIO_MIXER_SET)
return -1;
if (ioctl(aio->fd, AUDIO_MIXER_READ, &ctrl) < 0)
err(EXIT_FAILURE, "failed to read mixer control");
ctrl.un.mask ^= control->info.un.s.member[control->setindex].mask;
if (ioctl(aio->fd, AUDIO_MIXER_WRITE, &ctrl) < 0)
err(EXIT_FAILURE, "failed to read mixer control");
draw_control(aio, control, true);
return 0;
}
static void
step_up(struct aiomixer *aio)
{
struct aiomixer_class *class;
struct aiomixer_control *control;
class = &aio->classes[aio->curclass];
control = &class->controls[aio->curcontrol];
if (aio->channels_unlocked &&
control->info.type == AUDIO_MIXER_VALUE &&
control->setindex > 0) {
control->setindex--;
draw_control(aio, control, true);
return;
}
select_control(aio, aio->curcontrol - 1);
}
static void
step_down(struct aiomixer *aio)
{
struct aiomixer_class *class;
struct aiomixer_control *control;
class = &aio->classes[aio->curclass];
control = &class->controls[aio->curcontrol];
if (aio->channels_unlocked &&
control->info.type == AUDIO_MIXER_VALUE &&
control->setindex < (control->info.un.v.num_channels - 1)) {
control->setindex++;
draw_control(aio, control, true);
return;
}
select_control(aio, (aio->curcontrol + 1) % class->numcontrols);
}
static int
read_key(struct aiomixer *aio, int ch)
{
struct aiomixer_class *class;
struct aiomixer_control *control;
size_t i;
switch (ch) {
case KEY_RESIZE:
class = &aio->classes[aio->curclass];
resize_widgets(aio);
draw_header(aio);
draw_classbar(aio);
for (i = 0; i < class->numcontrols; ++i) {
draw_control(aio,
&class->controls[i],
aio->state == STATE_CONTROL_SELECT ?
(aio->curcontrol == i) : false);
}
break;
case KEY_LEFT:
case 'h':
if (aio->state == STATE_CLASS_SELECT) {
select_class(aio, aio->curclass > 0 ?
aio->curclass - 1 : aio->numclasses - 1);
} else if (aio->state == STATE_CONTROL_SELECT) {
class = &aio->classes[aio->curclass];
slide_control(aio,
&class->controls[aio->curcontrol], false);
}
break;
case KEY_RIGHT:
case 'l':
if (aio->state == STATE_CLASS_SELECT) {
select_class(aio,
(aio->curclass + 1) % aio->numclasses);
} else if (aio->state == STATE_CONTROL_SELECT) {
class = &aio->classes[aio->curclass];
slide_control(aio,
&class->controls[aio->curcontrol], true);
}
break;
case KEY_UP:
case 'k':
if (aio->state == STATE_CONTROL_SELECT) {
if (aio->curcontrol == 0) {
class = &aio->classes[aio->curclass];
control = &class->controls[aio->curcontrol];
control->setindex = -1;
aio->state = STATE_CLASS_SELECT;
draw_control(aio, control, false);
} else {
step_up(aio);
}
}
break;
case KEY_DOWN:
case 'j':
if (aio->state == STATE_CLASS_SELECT) {
class = &aio->classes[aio->curclass];
if (class->numcontrols > 0) {
aio->state = STATE_CONTROL_SELECT;
select_control(aio, 0);
}
} else if (aio->state == STATE_CONTROL_SELECT) {
step_down(aio);
}
break;
case '\n':
case ' ':
if (aio->state == STATE_CONTROL_SELECT)
toggle_set(aio);
break;
case '1':
select_class(aio, 0);
break;
case '2':
select_class(aio, 1);
break;
case '3':
select_class(aio, 2);
break;
case '4':
select_class(aio, 3);
break;
case '5':
select_class(aio, 4);
break;
case '6':
select_class(aio, 5);
break;
case '7':
select_class(aio, 6);
break;
case '8':
select_class(aio, 7);
break;
case '9':
select_class(aio, 8);
break;
case 'q':
case '\e':
if (aio->state == STATE_CONTROL_SELECT) {
class = &aio->classes[aio->curclass];
control = &class->controls[aio->curcontrol];
aio->state = STATE_CLASS_SELECT;
draw_control(aio, control, false);
break;
}
return 1;
case 'u':
aio->channels_unlocked = !aio->channels_unlocked;
if (aio->state == STATE_CONTROL_SELECT) {
class = &aio->classes[aio->curclass];
control = &class->controls[aio->curcontrol];
if (control->info.type == AUDIO_MIXER_VALUE)
draw_control(aio, control, true);
}
break;
}
draw_screen(aio);
return 0;
}
static void
process_device_select(struct aiomixer *aio, unsigned int num_devices)
{
unsigned int selected_device = 0;
char device_path[16];
int ch;
draw_mixer_select(num_devices, selected_device);
while ((ch = getch()) != ERR) {
switch (ch) {
case '\n':
clear();
(void)snprintf(device_path, sizeof(device_path),
"/dev/mixer%d", selected_device);
open_device(aio, device_path);
return;
case KEY_UP:
case 'k':
if (selected_device > 0)
selected_device--;
else
selected_device = (num_devices - 1);
break;
case KEY_DOWN:
case 'j':
if (selected_device < (num_devices - 1))
selected_device++;
else
selected_device = 0;
break;
case '1':
selected_device = 0;
break;
case '2':
selected_device = 1;
break;
case '3':
selected_device = 2;
break;
case '4':
selected_device = 3;
break;
case '5':
selected_device = 4;
break;
case '6':
selected_device = 5;
break;
case '7':
selected_device = 6;
break;
case '8':
selected_device = 7;
break;
case '9':
selected_device = 8;
break;
}
draw_mixer_select(num_devices, selected_device);
}
}
static void
open_device(struct aiomixer *aio, const char *device)
{
int ch;
if ((aio->fd = open(device, O_RDWR)) < 0)
err(EXIT_FAILURE, "couldn't open mixer device");
if (ioctl(aio->fd, AUDIO_GETDEV, &aio->mixerdev) < 0)
err(EXIT_FAILURE, "AUDIO_GETDEV failed");
aio->state = STATE_CLASS_SELECT;
aiomixer_parse(aio);
create_widgets(aio);
draw_header(aio);
select_class(aio, 0);
draw_screen(aio);
while ((ch = getch()) != ERR) {
if (read_key(aio, ch) != 0)
break;
}
}
static __dead void
on_signal(int dummy)
{
endwin();
exit(0);
}
int
main(int argc, char **argv)
{
const char *mixer_device = NULL;
extern char *optarg;
extern int optind;
struct aiomixer *aio;
char mixer_path[32];
unsigned int mixer_count = 0;
int i, fd;
int ch;
if ((aio = malloc(sizeof(struct aiomixer))) == NULL) {
err(EXIT_FAILURE, "malloc failed");
}
while ((ch = getopt(argc, argv, "d:u")) != -1) {
switch (ch) {
case 'd':
mixer_device = optarg;
break;
case 'u':
aio->channels_unlocked = true;
break;
default:
usage();
break;
}
}
argc -= optind;
argv += optind;
if (initscr() == NULL)
err(EXIT_FAILURE, "can't initialize curses");
(void)signal(SIGHUP, on_signal);
(void)signal(SIGINT, on_signal);
(void)signal(SIGTERM, on_signal);
curs_set(0);
keypad(stdscr, TRUE);
cbreak();
noecho();
if (has_colors()) {
start_color();
use_default_colors();
init_pair(COLOR_CONTROL_SELECTED, COLOR_BLUE, COLOR_BLACK);
init_pair(COLOR_LEVELS, COLOR_GREEN, COLOR_BLACK);
init_pair(COLOR_SET_SELECTED, COLOR_BLACK, COLOR_GREEN);
init_pair(COLOR_ENUM_ON, COLOR_WHITE, COLOR_RED);
init_pair(COLOR_ENUM_OFF, COLOR_WHITE, COLOR_BLUE);
init_pair(COLOR_ENUM_MISC, COLOR_BLACK, COLOR_YELLOW);
}
if (mixer_device != NULL) {
open_device(aio, mixer_device);
} else {
for (i = 0; i < 16; ++i) {
(void)snprintf(mixer_path, sizeof(mixer_path),
"/dev/mixer%d", i);
fd = open(mixer_path, O_RDWR);
if (fd == -1)
break;
close(fd);
mixer_count++;
}
if (mixer_count > 1) {
process_device_select(aio, mixer_count);
} else {
open_device(aio, _PATH_MIXER);
}
}
endwin();
close(aio->fd);
free(aio);
return 0;
}