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TOMOYO Linux Cross Reference
Linux/include/sound/seq_kernel.h

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  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@home.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 
 27 typedef sndrv_seq_tick_time_t snd_seq_tick_time_t;
 28 typedef sndrv_seq_position_t snd_seq_position_t;
 29 typedef sndrv_seq_frequency_t snd_seq_frequency_t;
 30 typedef sndrv_seq_instr_cluster_t snd_seq_instr_cluster_t;
 31 typedef enum sndrv_seq_client_type snd_seq_client_type_t;
 32 typedef enum sndrv_seq_stop_mode snd_seq_stop_mode_t;
 33 typedef struct sndrv_seq_port_info snd_seq_port_info_t;
 34 typedef struct sndrv_seq_port_subscribe snd_seq_port_subscribe_t;
 35 typedef struct sndrv_seq_event snd_seq_event_t;
 36 typedef struct sndrv_seq_addr snd_seq_addr_t;
 37 typedef struct sndrv_seq_ev_volume snd_seq_ev_volume_t;
 38 typedef struct sndrv_seq_ev_loop snd_seq_ev_loop_t;
 39 typedef struct sndrv_seq_remove_events snd_seq_remove_events_t;
 40 typedef struct sndrv_seq_query_subs snd_seq_query_subs_t;
 41 typedef struct sndrv_seq_real_time snd_seq_real_time_t;
 42 typedef struct sndrv_seq_system_info snd_seq_system_info_t;
 43 typedef struct sndrv_seq_client_info snd_seq_client_info_t;
 44 typedef struct sndrv_seq_queue_info snd_seq_queue_info_t;
 45 typedef struct sndrv_seq_queue_status snd_seq_queue_status_t;
 46 typedef struct sndrv_seq_queue_tempo snd_seq_queue_tempo_t;
 47 typedef struct sndrv_seq_queue_owner snd_seq_queue_owner_t;
 48 typedef struct sndrv_seq_queue_timer snd_seq_queue_timer_t;
 49 typedef struct sndrv_seq_queue_client snd_seq_queue_client_t;
 50 typedef struct sndrv_seq_client_pool snd_seq_client_pool_t;
 51 typedef struct sndrv_seq_instr snd_seq_instr_t;
 52 typedef struct sndrv_seq_instr_data snd_seq_instr_data_t;
 53 typedef struct sndrv_seq_instr_header snd_seq_instr_header_t;
 54 typedef 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 */
118 struct _snd_seq_user_client;
119 struct _snd_seq_kernel_client;
120 struct _snd_seq_client;
121 struct _snd_seq_queue;
122 
123 typedef struct _snd_seq_user_client user_client_t;
124 typedef struct _snd_seq_kernel_client kernel_client_t;
125 typedef struct _snd_seq_client client_t;
126 typedef struct _snd_seq_queue queue_t;
127 
128 /* call-backs for kernel client */
129 
130 typedef struct {
131         void *private_data;
132         int allow_input: 1,
133             allow_output: 1;
134         /*...*/
135 } snd_seq_client_callback_t;
136 
137 /* call-backs for kernel port */
138 typedef int (snd_seq_kernel_port_open_t)(void *private_data, snd_seq_port_subscribe_t *info);
139 typedef int (snd_seq_kernel_port_close_t)(void *private_data, snd_seq_port_subscribe_t *info);
140 typedef int (snd_seq_kernel_port_input_t)(snd_seq_event_t *ev, int direct, void *private_data, int atomic, int hop);
141 typedef void (snd_seq_kernel_port_private_free_t)(void *private_data);
142 
143 typedef 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 */
157 extern int snd_seq_create_kernel_client(snd_card_t *card, int client_index, snd_seq_client_callback_t *callback);
158 extern int snd_seq_delete_kernel_client(int client);
159 extern int snd_seq_kernel_client_enqueue(int client, snd_seq_event_t *ev, int atomic, int hop);
160 extern int snd_seq_kernel_client_dispatch(int client, snd_seq_event_t *ev, int atomic, int hop);
161 extern int snd_seq_kernel_client_ctl(int client, unsigned int cmd, void __user *arg);
162 
163 #define SNDRV_SEQ_EXT_MASK      0xc0000000
164 #define SNDRV_SEQ_EXT_USRPTR    0x80000000
165 #define SNDRV_SEQ_EXT_CHAINED   0x40000000
166 
167 typedef int (*snd_seq_dump_func_t)(void *ptr, void *buf, int count);
168 int snd_seq_expand_var_event(const snd_seq_event_t *event, int count, char *buf, int in_kernel, int size_aligned);
169 int snd_seq_dump_var_event(const snd_seq_event_t *event, snd_seq_dump_func_t func, void *private_data);
170 
171 /* port callback routines */
172 void snd_port_init_callback(snd_seq_port_callback_t *p);
173 snd_seq_port_callback_t *snd_port_alloc_callback(void);
174 
175 /* port attach/detach */
176 int snd_seq_event_port_attach(int client, snd_seq_port_callback_t *pcbp,
177                               int cap, int type, int midi_channels, int midi_voices, char *portname);
178 int snd_seq_event_port_detach(int client, int port);
179 
180 #endif /* __SOUND_SEQ_KERNEL_H */
181 

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