mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-03 09:01:52 -05:00
Removed
This commit is contained in:
Jaroslav Kysela
parent
7165608b17
commit
3e561540d5
1 changed files with 0 additions and 503 deletions
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@ -1,503 +0,0 @@
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/*
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* Control Interface - highlevel API
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* Copyright (c) 2000 by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#define __USE_GNU
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#include <search.h>
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#include "control_local.h"
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static void snd_ctl_hfree1(snd_hctl_elem_t *helem);
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int snd_ctl_hbuild(snd_ctl_t *handle, snd_ctl_hsort_t hsort)
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{
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snd_ctl_elem_list_t list;
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snd_hctl_elem_t *helem, *prev;
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int err;
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unsigned int idx;
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assert(handle != NULL);
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if ((err = snd_ctl_hfree(handle)) < 0)
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return err;
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if (hsort == NULL)
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hsort = snd_ctl_hsort;
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memset(&list, 0, sizeof(list));
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do {
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if (list.pids != NULL)
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free(list.pids);
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list.offset = 0;
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list.space = 0;
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if ((err = snd_ctl_clist(handle, &list)) < 0)
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return err;
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if (list.count == 0)
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break;
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list.pids = (snd_ctl_elem_id_t *)calloc(list.count, sizeof(snd_ctl_elem_id_t));
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if (list.pids == NULL)
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return -ENOMEM;
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list.space = list.count;
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if ((err = snd_ctl_clist(handle, &list)) < 0)
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return err;
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} while (list.count != list.used);
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for (idx = 0, prev = NULL; idx < list.count; idx++) {
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helem = (snd_hctl_elem_t *)calloc(1, sizeof(snd_hctl_elem_t));
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if (helem == NULL)
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goto __nomem;
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helem->id = list.pids[idx];
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helem->handle = handle;
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if (tsearch(helem, &handle->hroot, (__compar_fn_t)hsort) == NULL) {
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__nomem:
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if (handle->hroot != NULL) {
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tdestroy(handle->hroot, (__free_fn_t)snd_ctl_hfree1);
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handle->hroot = NULL;
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}
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handle->hroot = NULL;
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if (helem != NULL)
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free(helem);
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free(list.pids);
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return -ENOMEM;
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}
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list_add_tail(&helem->list, &handle->hlist);
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handle->hcount++;
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}
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if (list.pids != NULL)
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free(list.pids);
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if ((err = snd_ctl_hresort(handle, hsort)) < 0) {
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tdestroy(handle->hroot, (__free_fn_t)snd_ctl_hfree1);
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handle->hroot = NULL;
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}
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return 0;
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}
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static void snd_ctl_hfree1(snd_hctl_elem_t *helem)
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{
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snd_ctl_t *handle;
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assert(helem != NULL);
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handle = helem->handle;
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assert(handle != NULL);
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assert(handle->hcount > 0);
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if (helem->callback_remove)
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helem->callback_remove(handle, helem);
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if (helem->private_free)
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helem->private_free(helem);
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list_del(&helem->list);
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free(helem);
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handle->hcount--;
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}
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int snd_ctl_hfree(snd_ctl_t *handle)
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{
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handle->hsort = NULL;
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handle->herr = 0;
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if (handle->hroot != NULL) {
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tdestroy(handle->hroot, (__free_fn_t)snd_ctl_hfree1);
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handle->hroot = NULL;
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}
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assert(list_empty(&handle->hlist));
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assert(handle->hcount == 0);
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return 0;
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}
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#define NOT_FOUND 1000000000
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static int snd_ctl_hsort_mixer_priority_lookup(char **name, char * const *names, int coef)
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{
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int res;
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for (res = 0; *names; names++, res += coef) {
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if (!strncmp(*name, *names, strlen(*names))) {
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*name += strlen(*names);
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if (**name == ' ')
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(*name)++;
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return res;
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}
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}
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return NOT_FOUND;
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}
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static int snd_ctl_hsort_mixer_priority(const char *name)
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{
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static char *names[] = {
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"Master",
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"Master Digital",
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"Master Mono",
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"Hardware Master",
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"Headphone",
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"Tone Control",
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"3D Control",
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"PCM",
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"PCM Front",
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"PCM Rear",
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"PCM Pan",
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"Synth",
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"FM",
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"Wave",
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"Music",
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"DSP",
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"Line",
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"CD",
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"Mic",
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"Phone",
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"Video",
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"PC Speaker",
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"Aux",
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"Mono",
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"Mono Output",
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"ADC",
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"Capture Source",
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"Capture",
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"Playback",
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"Loopback",
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"Analog Loopback",
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"Digital Loopback",
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"S/PDIF Input",
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"S/PDIF Output",
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NULL
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};
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static char *names1[] = {
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"Switch",
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"Volume",
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"Playback",
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"Capture",
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"Bypass",
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NULL
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};
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static char *names2[] = {
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"Switch",
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"Volume",
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"Bypass",
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NULL
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};
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int res, res1;
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if ((res = snd_ctl_hsort_mixer_priority_lookup((char **)&name, names, 1000000)) == NOT_FOUND)
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return NOT_FOUND;
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if ((res1 = snd_ctl_hsort_mixer_priority_lookup((char **)&name, names1, 1000)) == NOT_FOUND)
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return res;
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res += res1;
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if ((res1 = snd_ctl_hsort_mixer_priority_lookup((char **)&name, names2, 1)) == NOT_FOUND)
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return res;
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return res + res1;
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}
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int snd_ctl_hsort(const snd_hctl_elem_t *c1, const snd_hctl_elem_t *c2)
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{
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int res, p1, p2;
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if (c1->id.iface < c2->id.iface)
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return -1;
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if (c1->id.iface > c2->id.iface)
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return 1;
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if ((res = strcmp(c1->id.name, c2->id.name)) != 0) {
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if (c1->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
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return res;
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p1 = snd_ctl_hsort_mixer_priority(c1->id.name);
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p2 = snd_ctl_hsort_mixer_priority(c2->id.name);
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if (p1 < p2)
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return -1;
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if (p1 > p2)
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return 1;
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return res;
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}
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if (c1->id.index < c2->id.index)
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return -1;
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if (c1->id.index > c2->id.index)
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return 1;
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return 0;
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}
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static void snd_ctl_hresort_free(snd_hctl_elem_t *helem ATTRIBUTE_UNUSED)
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{
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/* nothing */
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}
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int snd_ctl_hresort(snd_ctl_t *handle, snd_ctl_hsort_t hsort)
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{
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struct list_head *list;
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snd_hctl_elem_t *helem;
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snd_ctl_elem_id_t *ids, *pids;
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int idx;
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assert(handle != NULL && hsort != NULL);
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if (handle->hcount == 0)
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return 0;
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if (handle->herr < 0)
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return handle->herr;
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assert(handle->hroot_new == NULL);
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ids = pids = (snd_ctl_elem_id_t *)malloc(sizeof(snd_ctl_elem_id_t) * handle->hcount);
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if (ids == NULL)
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return -ENOMEM;
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/* first step - update search engine */
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list_for_each(list, &handle->hlist) {
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helem = list_entry(list, snd_hctl_elem_t, list);
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*pids++ = helem->id;
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if (tsearch(helem, &handle->hroot_new, (__compar_fn_t)hsort) == NULL) {
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if (handle->hroot_new != NULL)
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tdestroy(handle->hroot_new, (__free_fn_t)snd_ctl_hresort_free);
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handle->hroot_new = NULL;
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free(ids);
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return -ENOMEM;
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}
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}
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if (handle->hroot != NULL)
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tdestroy(handle->hroot, (__free_fn_t)snd_ctl_hresort_free);
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handle->hsort = hsort;
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handle->hroot = handle->hroot_new;
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handle->hroot_new = NULL;
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/* second step - perform qsort and save results */
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qsort(ids, handle->hcount, sizeof(snd_ctl_elem_id_t), (int (*)(const void *, const void *))hsort);
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INIT_LIST_HEAD(&handle->hlist);
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for (idx = 0; idx < handle->hcount; idx++) {
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helem = snd_ctl_hfind(handle, ids + idx);
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list_add_tail(&helem->list, &handle->hlist);
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}
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free(ids);
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return 0;
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}
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snd_hctl_elem_t *snd_ctl_hfirst(snd_ctl_t *handle)
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{
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assert(handle != NULL);
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if (list_empty(&handle->hlist))
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return NULL;
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return (snd_hctl_elem_t *)list_entry(handle->hlist.next, snd_hctl_elem_t, list);
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}
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snd_hctl_elem_t *snd_ctl_hlast(snd_ctl_t *handle)
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{
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assert(handle != NULL);
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if (list_empty(&handle->hlist))
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return NULL;
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return (snd_hctl_elem_t *)list_entry(handle->hlist.prev, snd_hctl_elem_t, list);
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}
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snd_hctl_elem_t *snd_ctl_hnext(snd_ctl_t *handle, snd_hctl_elem_t *helem)
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{
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assert(handle != NULL && helem != NULL);
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if (helem->list.next == &handle->hlist)
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return NULL;
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return (snd_hctl_elem_t *)list_entry(helem->list.next, snd_hctl_elem_t, list);
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}
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snd_hctl_elem_t *snd_ctl_hprev(snd_ctl_t *handle, snd_hctl_elem_t *helem)
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{
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assert(handle != NULL && helem != NULL);
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if (helem->list.prev == &handle->hlist)
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return NULL;
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return (snd_hctl_elem_t *)list_entry(helem->list.prev, snd_hctl_elem_t, list);
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}
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int snd_ctl_hcount(snd_ctl_t *handle)
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{
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assert(handle != NULL);
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return handle->hcount;
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}
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snd_hctl_elem_t *snd_ctl_hfind(snd_ctl_t *handle, snd_ctl_elem_id_t *id)
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{
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void *res;
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assert(handle != NULL);
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if (handle->hroot == NULL)
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return NULL;
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res = tfind(id, &handle->hroot, (__compar_fn_t)handle->hsort);
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return res == NULL ? NULL : *(snd_hctl_elem_t **)res;
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}
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|
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int snd_ctl_hlist(snd_ctl_t *handle, snd_hctl_elem_list_t *hlist)
|
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{
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struct list_head *list;
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snd_hctl_elem_t *helem;
|
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unsigned int idx;
|
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|
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assert(hlist != NULL);
|
||||
if (hlist->offset >= (unsigned int)handle->hcount)
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return -EINVAL;
|
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hlist->used = 0;
|
||||
hlist->count = handle->hcount;
|
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if (hlist->space > 0) {
|
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if (hlist->pids == NULL)
|
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return -EINVAL;
|
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idx = 0;
|
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list_for_each(list, &handle->hlist) {
|
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helem = list_entry(list, snd_hctl_elem_t, list);
|
||||
if (idx >= hlist->offset + hlist->space)
|
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break;
|
||||
if (idx >= hlist->offset) {
|
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hlist->pids[idx] = helem->id;
|
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hlist->used++;
|
||||
}
|
||||
idx++;
|
||||
}
|
||||
}
|
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return 0;
|
||||
}
|
||||
|
||||
int snd_ctl_hcallback_rebuild(snd_ctl_t *handle, snd_ctl_hcallback_rebuild_t callback, void *private_data)
|
||||
{
|
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assert(handle != NULL);
|
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handle->callback_rebuild = callback;
|
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handle->callback_rebuild_private_data = private_data;
|
||||
return 0;
|
||||
}
|
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|
||||
int snd_ctl_hcallback_add(snd_ctl_t *handle, snd_ctl_hcallback_add_t callback, void *private_data)
|
||||
{
|
||||
assert(handle != NULL);
|
||||
handle->callback_add = callback;
|
||||
handle->callback_add_private_data = private_data;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void callback_rebuild(snd_ctl_t *handle, void *private_data ATTRIBUTE_UNUSED)
|
||||
{
|
||||
handle->herr = snd_ctl_hbuild(handle, handle->hsort);
|
||||
if (handle->herr >= 0 && handle->callback_rebuild)
|
||||
handle->callback_rebuild(handle, handle->callback_rebuild_private_data);
|
||||
}
|
||||
|
||||
static void callback_change(snd_ctl_t *handle, void *private_data ATTRIBUTE_UNUSED, snd_ctl_elem_id_t *id)
|
||||
{
|
||||
snd_hctl_elem_t *helem;
|
||||
|
||||
if (handle->herr < 0)
|
||||
return;
|
||||
helem = snd_ctl_hfind(handle, id);
|
||||
if (helem == NULL) {
|
||||
handle->herr = -ENOENT;
|
||||
return;
|
||||
}
|
||||
helem->change = 1;
|
||||
}
|
||||
|
||||
static void callback_value(snd_ctl_t *handle, void *private_data ATTRIBUTE_UNUSED, snd_ctl_elem_id_t *id)
|
||||
{
|
||||
snd_hctl_elem_t *helem;
|
||||
|
||||
if (handle->herr < 0)
|
||||
return;
|
||||
helem = snd_ctl_hfind(handle, id);
|
||||
if (helem == NULL) {
|
||||
handle->herr = -ENOENT;
|
||||
return;
|
||||
}
|
||||
helem->value = 1;
|
||||
}
|
||||
|
||||
static void callback_add(snd_ctl_t *handle, void *private_data ATTRIBUTE_UNUSED, snd_ctl_elem_id_t *id)
|
||||
{
|
||||
snd_hctl_elem_t *helem, *icontrol;
|
||||
|
||||
if (handle->herr < 0)
|
||||
return;
|
||||
helem = (snd_hctl_elem_t *)calloc(1, sizeof(snd_hctl_elem_t));
|
||||
if (helem == NULL) {
|
||||
handle->herr = -ENOMEM;
|
||||
return;
|
||||
}
|
||||
helem->id = *id;
|
||||
helem->handle = handle;
|
||||
icontrol = tsearch(helem, &handle->hroot, (__compar_fn_t)handle->hsort);
|
||||
if (icontrol == NULL) {
|
||||
free(helem);
|
||||
handle->herr = -ENOMEM;
|
||||
return;
|
||||
}
|
||||
if (icontrol != helem) { /* double hit */
|
||||
free(helem);
|
||||
return;
|
||||
}
|
||||
list_add_tail(&helem->list, &handle->hlist);
|
||||
if (handle->callback_add)
|
||||
handle->callback_add(handle, handle->callback_add_private_data, helem);
|
||||
}
|
||||
|
||||
static void callback_remove(snd_ctl_t *handle, void *private_data ATTRIBUTE_UNUSED, snd_ctl_elem_id_t *id)
|
||||
{
|
||||
snd_hctl_elem_t *helem;
|
||||
|
||||
if (handle->herr < 0)
|
||||
return;
|
||||
helem = snd_ctl_hfind(handle, id);
|
||||
if (helem == NULL) {
|
||||
handle->herr = -ENOENT;
|
||||
return;
|
||||
}
|
||||
if (tdelete(helem, &handle->hroot, (__compar_fn_t)handle->hsort) != NULL)
|
||||
snd_ctl_hfree1(helem);
|
||||
}
|
||||
|
||||
int snd_ctl_hevent(snd_ctl_t *handle)
|
||||
{
|
||||
static snd_ctl_callbacks_t callbacks = {
|
||||
rebuild: callback_rebuild,
|
||||
value: callback_value,
|
||||
change: callback_change,
|
||||
add: callback_add,
|
||||
remove: callback_remove,
|
||||
private_data: NULL,
|
||||
reserved: { NULL, }
|
||||
};
|
||||
struct list_head *list;
|
||||
snd_hctl_elem_t *helem;
|
||||
int res;
|
||||
|
||||
assert(handle != NULL);
|
||||
handle->herr = 0;
|
||||
res = snd_ctl_read(handle, &callbacks);
|
||||
if (res < 0)
|
||||
return res;
|
||||
if (handle->herr < 0)
|
||||
return handle->herr;
|
||||
list_for_each(list, &handle->hlist) {
|
||||
helem = list_entry(list, snd_hctl_elem_t, list);
|
||||
if (helem->change && helem->callback_change) {
|
||||
helem->callback_change(helem->handle, helem);
|
||||
helem->change = 0;
|
||||
}
|
||||
if (helem->value && helem->callback_value) {
|
||||
helem->callback_value(helem->handle, helem);
|
||||
helem->value = 0;
|
||||
}
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
int snd_hctl_elem_list_alloc_space(snd_hctl_elem_list_t *obj, unsigned int entries)
|
||||
{
|
||||
obj->pids = calloc(entries, sizeof(*obj->pids));
|
||||
if (!obj->pids) {
|
||||
obj->space = 0;
|
||||
return -ENOMEM;
|
||||
}
|
||||
obj->space = entries;
|
||||
return 0;
|
||||
}
|
||||
|
||||
void snd_hctl_elem_list_free_space(snd_hctl_elem_list_t *obj)
|
||||
{
|
||||
free(obj->pids);
|
||||
obj->pids = NULL;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue