1*2b7f4545Snia /* $NetBSD: parse.c,v 1.3 2021/05/08 13:03:40 nia Exp $ */
226802ffdSnia /*-
326802ffdSnia * Copyright (c) 2021 The NetBSD Foundation, Inc.
426802ffdSnia * All rights reserved.
526802ffdSnia *
626802ffdSnia * This code is derived from software contributed to The NetBSD Foundation
726802ffdSnia * by Nia Alarie.
826802ffdSnia *
926802ffdSnia * Redistribution and use in source and binary forms, with or without
1026802ffdSnia * modification, are permitted provided that the following conditions
1126802ffdSnia * are met:
1226802ffdSnia * 1. Redistributions of source code must retain the above copyright
1326802ffdSnia * notice, this list of conditions and the following disclaimer.
1426802ffdSnia * 2. Redistributions in binary form must reproduce the above copyright
1526802ffdSnia * notice, this list of conditions and the following disclaimer in the
1626802ffdSnia * documentation and/or other materials provided with the distribution.
1726802ffdSnia *
1826802ffdSnia * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1926802ffdSnia * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
2026802ffdSnia * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
2126802ffdSnia * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
2226802ffdSnia * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
2326802ffdSnia * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
2426802ffdSnia * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
2526802ffdSnia * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
2626802ffdSnia * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
2726802ffdSnia * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2826802ffdSnia * POSSIBILITY OF SUCH DAMAGE.
2926802ffdSnia */
3026802ffdSnia #include <sys/audioio.h>
3126802ffdSnia #include <sys/ioctl.h>
3226802ffdSnia #include <curses.h>
3326802ffdSnia #include <stdlib.h>
3426802ffdSnia #include "app.h"
3526802ffdSnia #include "parse.h"
3626802ffdSnia
3726802ffdSnia static struct aiomixer_class *get_class(struct aiomixer *, int);
3826802ffdSnia static int compare_control(const void *, const void *);
39*2b7f4545Snia static int compare_class(const void *, const void *);
4026802ffdSnia
4126802ffdSnia static struct aiomixer_class *
get_class(struct aiomixer * aio,int class)4226802ffdSnia get_class(struct aiomixer *aio, int class)
4326802ffdSnia {
4426802ffdSnia size_t i;
4526802ffdSnia
4626802ffdSnia for (i = 0; i < aio->numclasses; ++i) {
4726802ffdSnia if (aio->classes[i].index == class) {
4826802ffdSnia return &aio->classes[i];
4926802ffdSnia }
5026802ffdSnia }
5126802ffdSnia return NULL;
5226802ffdSnia }
5326802ffdSnia
5426802ffdSnia static int
compare_control(const void * pa,const void * pb)5526802ffdSnia compare_control(const void *pa, const void *pb)
5626802ffdSnia {
5726802ffdSnia const struct aiomixer_control *a = (const struct aiomixer_control *)pa;
5826802ffdSnia const struct aiomixer_control *b = (const struct aiomixer_control *)pb;
5926802ffdSnia
60dbb501c4Snia if (a->info.prev != AUDIO_MIXER_LAST ||
6126802ffdSnia b->info.prev != AUDIO_MIXER_LAST) {
6226802ffdSnia if (b->info.prev == a->info.index)
6326802ffdSnia return -1;
6426802ffdSnia if (a->info.prev == b->info.index)
6526802ffdSnia return 1;
66dbb501c4Snia } else {
6726802ffdSnia return strcmp(a->info.label.name, b->info.label.name);
6826802ffdSnia }
69dbb501c4Snia return 0;
70dbb501c4Snia }
7126802ffdSnia
72*2b7f4545Snia static int
compare_class(const void * pa,const void * pb)73*2b7f4545Snia compare_class(const void *pa, const void *pb)
74*2b7f4545Snia {
75*2b7f4545Snia const struct aiomixer_class *a = (const struct aiomixer_class *)pa;
76*2b7f4545Snia const struct aiomixer_class *b = (const struct aiomixer_class *)pb;
77*2b7f4545Snia
78*2b7f4545Snia if (strcmp(a->name, AudioCoutputs) == 0)
79*2b7f4545Snia return -1;
80*2b7f4545Snia if (strcmp(b->name, AudioCoutputs) == 0)
81*2b7f4545Snia return 1;
82*2b7f4545Snia
83*2b7f4545Snia return strcmp(a->name, b->name);
84*2b7f4545Snia }
85*2b7f4545Snia
8626802ffdSnia int
aiomixer_parse(struct aiomixer * aio)8726802ffdSnia aiomixer_parse(struct aiomixer *aio)
8826802ffdSnia {
8926802ffdSnia size_t i;
9026802ffdSnia struct mixer_devinfo info;
9126802ffdSnia struct aiomixer_class *class;
9226802ffdSnia struct aiomixer_control *control;
9326802ffdSnia
9426802ffdSnia for (info.index = 0;
9526802ffdSnia ioctl(aio->fd, AUDIO_MIXER_DEVINFO, &info) != -1; ++info.index) {
9626802ffdSnia if (info.type != AUDIO_MIXER_CLASS)
9726802ffdSnia continue;
9826802ffdSnia if (aio->numclasses >= __arraycount(aio->classes))
9926802ffdSnia break;
10026802ffdSnia class = &aio->classes[aio->numclasses++];
10126802ffdSnia memcpy(class->name, info.label.name, MAX_AUDIO_DEV_LEN);
10226802ffdSnia class->index = info.index;
10326802ffdSnia class->numcontrols = 0;
10426802ffdSnia }
10526802ffdSnia for (info.index = 0;
10626802ffdSnia ioctl(aio->fd, AUDIO_MIXER_DEVINFO, &info) != -1; ++info.index) {
10726802ffdSnia if (info.type == AUDIO_MIXER_CLASS)
10826802ffdSnia continue;
10926802ffdSnia if (info.type == AUDIO_MIXER_VALUE) {
11026802ffdSnia /* XXX workaround for hdaudio(4) bugs */
11126802ffdSnia if (info.un.v.delta > AUDIO_MAX_GAIN)
11226802ffdSnia continue;
11326802ffdSnia if (info.un.v.num_channels == 0)
11426802ffdSnia continue;
11526802ffdSnia }
11626802ffdSnia class = get_class(aio, info.mixer_class);
11726802ffdSnia if (class == NULL)
11826802ffdSnia break;
11926802ffdSnia if (class->numcontrols >= __arraycount(class->controls))
12026802ffdSnia break;
12126802ffdSnia control = &class->controls[class->numcontrols++];
12226802ffdSnia control->info = info;
12326802ffdSnia }
124*2b7f4545Snia qsort(aio->classes, aio->numclasses,
125*2b7f4545Snia sizeof(struct aiomixer_class),
126*2b7f4545Snia compare_class);
12726802ffdSnia for (i = 0; i < aio->numclasses; ++i) {
12826802ffdSnia class = &aio->classes[i];
12926802ffdSnia qsort(class->controls, class->numcontrols,
13026802ffdSnia sizeof(struct aiomixer_control),
13126802ffdSnia compare_control);
13226802ffdSnia }
13326802ffdSnia return 0;
13426802ffdSnia }
13526802ffdSnia
136