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2289326673
Since they are never changed it does not make sense to have them in the writeable .data section, just make sure to add const to the ops member in the structure definitions so that there are no extra warnings added. Signed-off-by: Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com>
100 lines
4 KiB
C
100 lines
4 KiB
C
/*
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* Control Interface - local header file
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* Copyright (c) 2000 by Jaroslav Kysela <perex@perex.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 Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; 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 "local.h"
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typedef struct _snd_ctl_ops {
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int (*close)(snd_ctl_t *handle);
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int (*nonblock)(snd_ctl_t *handle, int nonblock);
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int (*async)(snd_ctl_t *handle, int sig, pid_t pid);
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int (*subscribe_events)(snd_ctl_t *handle, int subscribe);
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int (*card_info)(snd_ctl_t *handle, snd_ctl_card_info_t *info);
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int (*element_list)(snd_ctl_t *handle, snd_ctl_elem_list_t *list);
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int (*element_info)(snd_ctl_t *handle, snd_ctl_elem_info_t *info);
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int (*element_add)(snd_ctl_t *handle, snd_ctl_elem_info_t *info);
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int (*element_replace)(snd_ctl_t *handle, snd_ctl_elem_info_t *info);
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int (*element_remove)(snd_ctl_t *handle, snd_ctl_elem_id_t *id);
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int (*element_read)(snd_ctl_t *handle, snd_ctl_elem_value_t *control);
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int (*element_write)(snd_ctl_t *handle, snd_ctl_elem_value_t *control);
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int (*element_lock)(snd_ctl_t *handle, snd_ctl_elem_id_t *lock);
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int (*element_unlock)(snd_ctl_t *handle, snd_ctl_elem_id_t *unlock);
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int (*element_tlv)(snd_ctl_t *handle, int op_flag, unsigned int numid,
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unsigned int *tlv, unsigned int tlv_size);
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int (*hwdep_next_device)(snd_ctl_t *handle, int *device);
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int (*hwdep_info)(snd_ctl_t *handle, snd_hwdep_info_t * info);
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int (*pcm_next_device)(snd_ctl_t *handle, int *device);
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int (*pcm_info)(snd_ctl_t *handle, snd_pcm_info_t * info);
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int (*pcm_prefer_subdevice)(snd_ctl_t *handle, int subdev);
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int (*rawmidi_next_device)(snd_ctl_t *handle, int *device);
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int (*rawmidi_info)(snd_ctl_t *handle, snd_rawmidi_info_t * info);
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int (*rawmidi_prefer_subdevice)(snd_ctl_t *handle, int subdev);
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int (*set_power_state)(snd_ctl_t *handle, unsigned int state);
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int (*get_power_state)(snd_ctl_t *handle, unsigned int *state);
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int (*read)(snd_ctl_t *handle, snd_ctl_event_t *event);
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int (*poll_descriptors_count)(snd_ctl_t *handle);
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int (*poll_descriptors)(snd_ctl_t *handle, struct pollfd *pfds, unsigned int space);
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int (*poll_revents)(snd_ctl_t *handle, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
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} snd_ctl_ops_t;
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struct _snd_ctl {
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void *dl_handle;
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char *name;
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snd_ctl_type_t type;
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const snd_ctl_ops_t *ops;
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void *private_data;
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int nonblock;
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int poll_fd;
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struct list_head async_handlers;
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};
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struct _snd_hctl_elem {
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snd_ctl_elem_id_t id; /* must be always on top */
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struct list_head list; /* links for list of all helems */
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int compare_weight; /* compare weight (reversed) */
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/* event callback */
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snd_hctl_elem_callback_t callback;
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void *callback_private;
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/* links */
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snd_hctl_t *hctl; /* associated handle */
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};
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struct _snd_hctl {
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snd_ctl_t *ctl;
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struct list_head elems; /* list of all controls */
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unsigned int alloc;
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unsigned int count;
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snd_hctl_elem_t **pelems;
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snd_hctl_compare_t compare;
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snd_hctl_callback_t callback;
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void *callback_private;
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};
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/* make local functions really local */
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#define snd_ctl_new snd1_ctl_new
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int snd_ctl_new(snd_ctl_t **ctlp, snd_ctl_type_t type, const char *name);
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int _snd_ctl_poll_descriptor(snd_ctl_t *ctl);
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#define _snd_ctl_async_descriptor _snd_ctl_poll_descriptor
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int snd_ctl_hw_open(snd_ctl_t **handle, const char *name, int card, int mode);
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int snd_ctl_shm_open(snd_ctl_t **handlep, const char *name, const char *sockname, const char *sname, int mode);
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int snd_ctl_async(snd_ctl_t *ctl, int sig, pid_t pid);
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