1 /* 2 * Sequencer Interface - definition of sequencer event handler 3 * Copyright (c) 2000 by Jaroslav Kysela <perex (at) perex.cz> 4 * Abramo Bagnara <abramo (at) alsa-project.org> 5 * 6 * 7 * This library is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU Lesser General Public License as 9 * published by the Free Software Foundation; either version 2.1 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 */ 22 23 #ifndef __SEQ_LOCAL_H 24 #define __SEQ_LOCAL_H 25 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <limits.h> 29 #include "local.h" 30 31 #define SND_SEQ_OBUF_SIZE (16*1024) /* default size */ 32 #define SND_SEQ_IBUF_SIZE 500 /* in event_size aligned */ 33 #define DEFAULT_TMPBUF_SIZE 20 34 35 typedef struct sndrv_seq_queue_client snd_seq_queue_client_t; 36 37 38 typedef struct { 39 int (*close)(snd_seq_t *seq); 40 int (*nonblock)(snd_seq_t *seq, int nonblock); 41 int (*system_info)(snd_seq_t *seq, snd_seq_system_info_t * info); 42 int (*get_client_info)(snd_seq_t *seq, snd_seq_client_info_t * info); 43 int (*set_client_info)(snd_seq_t *seq, snd_seq_client_info_t * info); 44 int (*create_port)(snd_seq_t *seq, snd_seq_port_info_t * port); 45 int (*delete_port)(snd_seq_t *seq, snd_seq_port_info_t * port); 46 int (*get_port_info)(snd_seq_t *seq, snd_seq_port_info_t * info); 47 int (*set_port_info)(snd_seq_t *seq, snd_seq_port_info_t * info); 48 int (*get_port_subscription)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub); 49 int (*subscribe_port)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub); 50 int (*unsubscribe_port)(snd_seq_t *seq, snd_seq_port_subscribe_t * sub); 51 int (*query_port_subscribers)(snd_seq_t *seq, snd_seq_query_subscribe_t * subs); 52 int (*get_queue_status)(snd_seq_t *seq, snd_seq_queue_status_t * status); 53 int (*get_queue_tempo)(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo); 54 int (*set_queue_tempo)(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo); 55 int (*get_queue_timer)(snd_seq_t *seq, snd_seq_queue_timer_t * timer); 56 int (*set_queue_timer)(snd_seq_t *seq, snd_seq_queue_timer_t * timer); 57 int (*get_queue_client)(snd_seq_t *seq, snd_seq_queue_client_t * client); 58 int (*set_queue_client)(snd_seq_t *seq, snd_seq_queue_client_t * client); 59 int (*create_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info); 60 int (*delete_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info); 61 int (*get_queue_info)(snd_seq_t *seq, snd_seq_queue_info_t *info); 62 int (*set_queue_info)(snd_seq_t *seq, snd_seq_queue_info_t *info); 63 int (*get_named_queue)(snd_seq_t *seq, snd_seq_queue_info_t *info); 64 ssize_t (*write)(snd_seq_t *seq, void *buf, size_t len); 65 ssize_t (*read)(snd_seq_t *seq, void *buf, size_t len); 66 int (*remove_events)(snd_seq_t *seq, snd_seq_remove_events_t *rmp); 67 int (*get_client_pool)(snd_seq_t *seq, snd_seq_client_pool_t *info); 68 int (*set_client_pool)(snd_seq_t *seq, snd_seq_client_pool_t *info); 69 int (*query_next_client)(snd_seq_t *seq, snd_seq_client_info_t *info); 70 int (*query_next_port)(snd_seq_t *seq, snd_seq_port_info_t *info); 71 } snd_seq_ops_t; 72 73 struct _snd_seq { 74 char *name; 75 snd_seq_type_t type; 76 int streams; 77 int mode; 78 int poll_fd; 79 void *dl_handle; 80 const snd_seq_ops_t *ops; 81 void *private_data; 82 int client; /* client number */ 83 /* buffers */ 84 char *obuf; /* output buffer */ 85 size_t obufsize; /* output buffer size */ 86 size_t obufused; /* output buffer used size */ 87 snd_seq_event_t *ibuf; /* input buffer */ 88 size_t ibufptr; /* current pointer of input buffer */ 89 size_t ibuflen; /* queued length */ 90 size_t ibufsize; /* input buffer size */ 91 snd_seq_event_t *tmpbuf; /* temporary event for extracted event */ 92 size_t tmpbufsize; /* size of errbuf */ 93 }; 94 95 int snd_seq_hw_open(snd_seq_t **handle, const char *name, int streams, int mode); 96 97 #endif 98
