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https://github.com/alsa-project/alsa-tools.git
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97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* EMU10k1 loader
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*
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* Copyright (c) 2003,2004 by Peter Zubaj
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <alsa/asoundlib.h>
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#include "ld10k1.h"
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#include "ld10k1_mixer.h"
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#include "ld10k1_error.h"
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int ld10k1_init_reserved_ctls(ld10k1_dsp_mgr_t *dsp_mgr, snd_ctl_t *ctlp)
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{
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snd_ctl_elem_list_t *clist;
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int count;
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int i;
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const char *ctl_name;
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unsigned int ctl_index;
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ld10k1_reserved_ctl_list_item_t *res_ctl;
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dsp_mgr->reserved_ctl_list = NULL;
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snd_ctl_elem_list_alloca(&clist);
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if (snd_ctl_elem_list(ctlp, clist) < 0)
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return LD10K1_ERR_NO_MEM;
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if ((count = snd_ctl_elem_list_get_count(clist)) < 0)
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return LD10K1_ERR_NO_MEM;
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snd_ctl_elem_list_set_offset(clist, 0);
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if (snd_ctl_elem_list_alloc_space(clist, count) < 0)
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return LD10K1_ERR_NO_MEM;
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if (snd_ctl_elem_list(ctlp, clist) < 0) {
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snd_ctl_elem_list_free_space(clist);
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return LD10K1_ERR_NO_MEM;
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}
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for (i = 0; i < count; i++) {
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snd_ctl_elem_id_t *id;
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snd_ctl_elem_id_alloca(&id);
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snd_ctl_elem_list_get_id(clist, i, id);
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ctl_name = snd_ctl_elem_id_get_name(id);
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ctl_index = snd_ctl_elem_id_get_index(id);
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res_ctl = (ld10k1_reserved_ctl_list_item_t *)malloc(sizeof(ld10k1_reserved_ctl_list_item_t));
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if (!res_ctl) {
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snd_ctl_elem_list_free_space(clist);
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return LD10K1_ERR_NO_MEM;
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}
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res_ctl->next = dsp_mgr->reserved_ctl_list;
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dsp_mgr->reserved_ctl_list = res_ctl;
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strncpy(res_ctl->res_ctl.name, ctl_name, 43);
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res_ctl->res_ctl.name[43] = '\0';
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res_ctl->res_ctl.index = ctl_index;
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}
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snd_ctl_elem_list_free_space(clist);
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return 0;
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}
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int ld10k1_free_reserved_ctls(ld10k1_dsp_mgr_t *dsp_mgr)
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{
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ld10k1_reserved_ctl_list_item_t *item;
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ld10k1_reserved_ctl_list_item_t *item1;
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for (item = dsp_mgr->reserved_ctl_list; item != NULL;) {
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item1 = item->next;
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free(item);
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item = item1;
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}
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dsp_mgr->reserved_ctl_list = NULL;
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return 0;
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}
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