1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * ALSA sequencer System Client 4 * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl> 5 */ 6 #ifndef __SND_SEQ_SYSTEM_H 7 #define __SND_SEQ_SYSTEM_H 8 9 #include <sound/seq_kernel.h> 10 11 12 /* entry points for broadcasting system events */ 13 void snd_seq_system_broadcast(int client, int port, int type, bool atomic); 14 15 /* normal system notification event broadcast */ 16 #define notify_event(client, port, type) \ 17 snd_seq_system_broadcast(client, port, type, false) 18 19 /* notify UMP EP/FB change event */ 20 static inline void snd_seq_system_ump_notify(int client, int block, int type, 21 bool atomic) 22 { 23 /* reuse the existing snd_seq_system_broadcast(): 24 * struct snd_seq_ev_ump_notify is compatible with struct snd_seq_addr 25 */ 26 snd_seq_system_broadcast(client, block, type, atomic); 27 } 28 29 #define snd_seq_system_client_ev_client_start(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_START) 30 #define snd_seq_system_client_ev_client_exit(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_EXIT) 31 #define snd_seq_system_client_ev_client_change(client) notify_event(client, 0, SNDRV_SEQ_EVENT_CLIENT_CHANGE) 32 #define snd_seq_system_client_ev_port_start(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_START) 33 #define snd_seq_system_client_ev_port_exit(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_EXIT) 34 #define snd_seq_system_client_ev_port_change(client, port) notify_event(client, port, SNDRV_SEQ_EVENT_PORT_CHANGE) 35 36 int snd_seq_system_notify(int client, int port, struct snd_seq_event *ev, 37 bool atomic); 38 39 /* register our internal client */ 40 int snd_seq_system_client_init(void); 41 42 /* unregister our internal client */ 43 void snd_seq_system_client_done(void); 44 45 46 #endif 47