Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef __SOUND_SEQ_KERNEL_H
2#define __SOUND_SEQ_KERNEL_H
3
4/*
5 * Main kernel header file for the ALSA sequencer
6 * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24#include <linux/time.h>
25#include "asequencer.h"
26
27typedef sndrv_seq_tick_time_t snd_seq_tick_time_t;
28typedef sndrv_seq_position_t snd_seq_position_t;
29typedef sndrv_seq_frequency_t snd_seq_frequency_t;
30typedef sndrv_seq_instr_cluster_t snd_seq_instr_cluster_t;
31typedef enum sndrv_seq_client_type snd_seq_client_type_t;
32typedef enum sndrv_seq_stop_mode snd_seq_stop_mode_t;
33typedef struct sndrv_seq_port_info snd_seq_port_info_t;
34typedef struct sndrv_seq_port_subscribe snd_seq_port_subscribe_t;
35typedef struct sndrv_seq_event snd_seq_event_t;
36typedef struct sndrv_seq_addr snd_seq_addr_t;
37typedef struct sndrv_seq_ev_volume snd_seq_ev_volume_t;
38typedef struct sndrv_seq_ev_loop snd_seq_ev_loop_t;
39typedef struct sndrv_seq_remove_events snd_seq_remove_events_t;
40typedef struct sndrv_seq_query_subs snd_seq_query_subs_t;
41typedef struct sndrv_seq_real_time snd_seq_real_time_t;
42typedef struct sndrv_seq_system_info snd_seq_system_info_t;
43typedef struct sndrv_seq_client_info snd_seq_client_info_t;
44typedef struct sndrv_seq_queue_info snd_seq_queue_info_t;
45typedef struct sndrv_seq_queue_status snd_seq_queue_status_t;
46typedef struct sndrv_seq_queue_tempo snd_seq_queue_tempo_t;
47typedef struct sndrv_seq_queue_owner snd_seq_queue_owner_t;
48typedef struct sndrv_seq_queue_timer snd_seq_queue_timer_t;
49typedef struct sndrv_seq_queue_client snd_seq_queue_client_t;
50typedef struct sndrv_seq_client_pool snd_seq_client_pool_t;
51typedef struct sndrv_seq_instr snd_seq_instr_t;
52typedef struct sndrv_seq_instr_data snd_seq_instr_data_t;
53typedef struct sndrv_seq_instr_header snd_seq_instr_header_t;
54typedef union sndrv_seq_timestamp snd_seq_timestamp_t;
55
56#define snd_seq_event_bounce_ext_data sndrv_seq_event_bounce_ext_data
57#define snd_seq_ev_is_result_type sndrv_seq_ev_is_result_type
58#define snd_seq_ev_is_channel_type sndrv_seq_ev_is_channel_type
59#define snd_seq_ev_is_note_type sndrv_seq_ev_is_note_type
60#define snd_seq_ev_is_control_type sndrv_seq_ev_is_control_type
61#define snd_seq_ev_is_queue_type sndrv_seq_ev_is_queue_type
62#define snd_seq_ev_is_message_type sndrv_seq_ev_is_message_type
63#define snd_seq_ev_is_sample_type sndrv_seq_ev_is_sample_type
64#define snd_seq_ev_is_user_type sndrv_seq_ev_is_user_type
65#define snd_seq_ev_is_fixed_type sndrv_seq_ev_is_fixed_type
66#define snd_seq_ev_is_instr_type sndrv_seq_ev_is_instr_type
67#define snd_seq_ev_is_variable_type sndrv_seq_ev_is_variable_type
68#define snd_seq_ev_is_reserved sndrv_seq_ev_is_reserved
69#define snd_seq_ev_is_direct sndrv_seq_ev_is_direct
70#define snd_seq_ev_is_prior sndrv_seq_ev_is_prior
71#define snd_seq_ev_length_type sndrv_seq_ev_length_type
72#define snd_seq_ev_is_fixed sndrv_seq_ev_is_fixed
73#define snd_seq_ev_is_variable sndrv_seq_ev_is_variable
74#define snd_seq_ev_is_varusr sndrv_seq_ev_is_varusr
75#define snd_seq_ev_timestamp_type sndrv_seq_ev_timestamp_type
76#define snd_seq_ev_is_tick sndrv_seq_ev_is_tick
77#define snd_seq_ev_is_real sndrv_seq_ev_is_real
78#define snd_seq_ev_timemode_type sndrv_seq_ev_timemode_type
79#define snd_seq_ev_is_abstime sndrv_seq_ev_is_abstime
80#define snd_seq_ev_is_reltime sndrv_seq_ev_is_reltime
81#define snd_seq_queue_sync_port sndrv_seq_queue_sync_port
82#define snd_seq_queue_owner sndrv_seq_queue_owner
83
84/* maximum number of events dequeued per schedule interval */
85#define SNDRV_SEQ_MAX_DEQUEUE 50
86
87/* maximum number of queues */
88#define SNDRV_SEQ_MAX_QUEUES 8
89
90/* max number of concurrent clients */
91#define SNDRV_SEQ_MAX_CLIENTS 192
92
93/* max number of concurrent ports */
94#define SNDRV_SEQ_MAX_PORTS 254
95
96/* max number of events in memory pool */
97#define SNDRV_SEQ_MAX_EVENTS 2000
98
99/* default number of events in memory chunk */
100#define SNDRV_SEQ_DEFAULT_CHUNK_EVENTS 64
101
102/* default number of events in memory pool */
103#define SNDRV_SEQ_DEFAULT_EVENTS 500
104
105/* max number of events in memory pool for one client (outqueue) */
106#define SNDRV_SEQ_MAX_CLIENT_EVENTS 2000
107
108/* default number of events in memory pool for one client (outqueue) */
109#define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS 200
110
111/* max delivery path length */
112#define SNDRV_SEQ_MAX_HOPS 10
113
114/* max size of event size */
115#define SNDRV_SEQ_MAX_EVENT_LEN 0x3fffffff
116
117/* typedefs */
118struct _snd_seq_user_client;
119struct _snd_seq_kernel_client;
120struct _snd_seq_client;
121struct _snd_seq_queue;
122
123typedef struct _snd_seq_user_client user_client_t;
124typedef struct _snd_seq_kernel_client kernel_client_t;
125typedef struct _snd_seq_client client_t;
126typedef struct _snd_seq_queue queue_t;
127
128/* call-backs for kernel client */
129
130typedef struct {
131 void *private_data;
132 unsigned allow_input: 1,
133 allow_output: 1;
134 /*...*/
135} snd_seq_client_callback_t;
136
137/* call-backs for kernel port */
138typedef int (snd_seq_kernel_port_open_t)(void *private_data, snd_seq_port_subscribe_t *info);
139typedef int (snd_seq_kernel_port_close_t)(void *private_data, snd_seq_port_subscribe_t *info);
140typedef int (snd_seq_kernel_port_input_t)(snd_seq_event_t *ev, int direct, void *private_data, int atomic, int hop);
141typedef void (snd_seq_kernel_port_private_free_t)(void *private_data);
142
143typedef struct {
144 struct module *owner;
145 void *private_data;
146 snd_seq_kernel_port_open_t *subscribe;
147 snd_seq_kernel_port_close_t *unsubscribe;
148 snd_seq_kernel_port_open_t *use;
149 snd_seq_kernel_port_close_t *unuse;
150 snd_seq_kernel_port_input_t *event_input;
151 snd_seq_kernel_port_private_free_t *private_free;
152 unsigned int callback_all; /* call subscribe callbacks at each connection/disconnection */
153 /*...*/
154} snd_seq_port_callback_t;
155
156/* interface for kernel client */
157extern int snd_seq_create_kernel_client(snd_card_t *card, int client_index, snd_seq_client_callback_t *callback);
158extern int snd_seq_delete_kernel_client(int client);
159extern int snd_seq_kernel_client_enqueue(int client, snd_seq_event_t *ev, int atomic, int hop);
160extern int snd_seq_kernel_client_dispatch(int client, snd_seq_event_t *ev, int atomic, int hop);
161extern int snd_seq_kernel_client_ctl(int client, unsigned int cmd, void *arg);
162
163#define SNDRV_SEQ_EXT_MASK 0xc0000000
164#define SNDRV_SEQ_EXT_USRPTR 0x80000000
165#define SNDRV_SEQ_EXT_CHAINED 0x40000000
166
167typedef int (*snd_seq_dump_func_t)(void *ptr, void *buf, int count);
168int snd_seq_expand_var_event(const snd_seq_event_t *event, int count, char *buf, int in_kernel, int size_aligned);
169int snd_seq_dump_var_event(const snd_seq_event_t *event, snd_seq_dump_func_t func, void *private_data);
170
171/* interface for OSS emulation */
172int snd_seq_set_queue_tempo(int client, snd_seq_queue_tempo_t *tempo);
173
174/* port callback routines */
175void snd_port_init_callback(snd_seq_port_callback_t *p);
176snd_seq_port_callback_t *snd_port_alloc_callback(void);
177
178/* port attach/detach */
179int snd_seq_event_port_attach(int client, snd_seq_port_callback_t *pcbp,
180 int cap, int type, int midi_channels, int midi_voices, char *portname);
181int snd_seq_event_port_detach(int client, int port);
182
183#ifdef CONFIG_KMOD
184void snd_seq_autoload_lock(void);
185void snd_seq_autoload_unlock(void);
186#else
187#define snd_seq_autoload_lock()
188#define snd_seq_autoload_unlock()
189#endif
190
191#endif /* __SOUND_SEQ_KERNEL_H */