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 */ 192