xref: /netbsd-src/usr.bin/aiomixer/parse.c (revision 2b7f45452778c0cb078dcdc867e0f668cde14fd5)
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