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88e5e45151
The sequencer API is totally recoded with the style of "encapsulation" in other api. The structure becomes opaque and accessed only via functions. Other changes: - There is no longer group in client and port info. - snd_seq_query_subs_t is renamed to snd_seq_query_subscribe_t. - snd_seq_delete_port takes only the port id argument instead of port_info structure. - snd_seq_input/output_buffer_size are renamed as snd_seq_get_input/output_buffer_size. Similarly snd_seq_resize_input/output_buffer are renamed as snd_seq_set_input/output_buffer_size. - snd_seq_get_named_queue is renamed to snd_seq_query_named_queue. - Sync codes are removed temporarily from API. - Subscription conditions are accessed via the corresponding functions. convert_time is named now as time_update. - snd_seq_get/set_queue_owner are removed. Use snd_seq_get/set_queue_info instead. - Instrument put/get/remove structure is unified as snd_instr_header_t.
96 lines
4.1 KiB
C
96 lines
4.1 KiB
C
/*
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* Sequencer Interface - definition of sequencer event handler
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* Copyright (c) 2000 by Jaroslav Kysela <perex@suse.cz>
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* Abramo Bagnara <abramo@alsa-project.org>
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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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#ifndef __SEQ_LOCAL_H
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#define __SEQ_LOCAL_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "local.h"
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#define SND_SEQ_OBUF_SIZE (16*1024) /* default size */
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#define SND_SEQ_IBUF_SIZE 500 /* in event_size aligned */
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#define DEFAULT_TMPBUF_SIZE 20
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typedef struct sndrv_seq_queue_client snd_seq_queue_client_t;
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typedef struct {
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int (*close)(snd_seq_t *seq);
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int (*nonblock)(snd_seq_t *seq, int nonblock);
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int (*system_info)(snd_seq_t *seq, snd_seq_system_info_t * info);
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int (*get_client_info)(snd_seq_t *seq, snd_seq_client_info_t * info);
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int (*set_client_info)(snd_seq_t *seq, snd_seq_client_info_t * info);
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int (*create_port)(snd_seq_t *seq, snd_seq_port_info_t * port);
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int (*delete_port)(snd_seq_t *seq, snd_seq_port_info_t * port);
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int (*get_port_info)(snd_seq_t *seq, snd_seq_port_info_t * info);
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int (*set_port_info)(snd_seq_t *seq, snd_seq_port_info_t * info);
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int (*get_port_subscription)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub);
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int (*subscribe_port)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub);
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int (*unsubscribe_port)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub);
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int (*query_port_subscribers)(snd_seq_t *seq, snd_seq_query_subscribe_t * subs);
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int (*get_queue_status)(snd_seq_t *seq, snd_seq_queue_status_t * status);
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int (*get_queue_tempo)(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo);
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int (*set_queue_tempo)(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo);
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int (*get_queue_timer)(snd_seq_t *seq, snd_seq_queue_timer_t * timer);
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int (*set_queue_timer)(snd_seq_t *seq, snd_seq_queue_timer_t * timer);
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int (*get_queue_client)(snd_seq_t *seq, snd_seq_queue_client_t * client);
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int (*set_queue_client)(snd_seq_t *seq, snd_seq_queue_client_t * client);
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int (*create_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info);
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int (*delete_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info);
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int (*get_queue_info)(snd_seq_t *seq, snd_seq_queue_info_t *info);
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int (*set_queue_info)(snd_seq_t *seq, snd_seq_queue_info_t *info);
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int (*get_named_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info);
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ssize_t (*write)(snd_seq_t *seq, void *buf, size_t len);
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ssize_t (*read)(snd_seq_t *seq, void *buf, size_t len);
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int (*remove_events)(snd_seq_t *seq, snd_seq_remove_events_t *rmp);
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int (*get_client_pool)(snd_seq_t *seq, snd_seq_client_pool_t *info);
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int (*set_client_pool)(snd_seq_t *seq, snd_seq_client_pool_t *info);
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int (*query_next_client)(snd_seq_t *seq, snd_seq_client_info_t *info);
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int (*query_next_port)(snd_seq_t *seq, snd_seq_port_info_t *info);
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} snd_seq_ops_t;
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struct _snd_seq {
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char *name;
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snd_seq_type_t type;
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int streams;
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int mode;
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int poll_fd;
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snd_seq_ops_t *ops;
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void *private_data;
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int client; /* client number */
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/* buffers */
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char *obuf; /* output buffer */
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size_t obufsize; /* output buffer size */
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size_t obufused; /* output buffer used size */
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snd_seq_event_t *ibuf; /* input buffer */
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size_t ibufptr; /* current pointer of input buffer */
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size_t ibuflen; /* queued length */
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size_t ibufsize; /* input buffer size */
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snd_seq_event_t *tmpbuf; /* temporary event for extracted event */
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size_t tmpbufsize; /* size of errbuf */
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};
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int snd_seq_hw_open(snd_seq_t **handle, const char *name, int streams, int mode);
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#endif
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