include/sound/seq_kernel.h

   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
  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         unsigned 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 *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 /* interface for OSS emulation */
 172 int snd_seq_set_queue_tempo(int client, snd_seq_queue_tempo_t *tempo);
 173
 174 /* port callback routines */
 175 void snd_port_init_callback(snd_seq_port_callback_t *p);
 176 snd_seq_port_callback_t *snd_port_alloc_callback(void);
 177
 178 /* port attach/detach */
 179 int 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);
 181 int snd_seq_event_port_detach(int client, int port);
 182
 183 #ifdef CONFIG_KMOD
 184 void snd_seq_autoload_lock(void);
 185 void 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 */