/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* OSS compatible sequencer driver
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*
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* seq_oss_event.h - OSS event queue record
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*
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* Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
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*/
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#ifndef __SEQ_OSS_EVENT_H
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#define __SEQ_OSS_EVENT_H
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#include "seq_oss_device.h"
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#define SHORT_EVENT_SIZE 4
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#define LONG_EVENT_SIZE 8
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/* short event (4bytes) */
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struct evrec_short {
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unsigned char code;
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unsigned char parm1;
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unsigned char dev;
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unsigned char parm2;
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};
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/* short note events (4bytes) */
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struct evrec_note {
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unsigned char code;
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unsigned char chn;
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unsigned char note;
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unsigned char vel;
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};
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/* long timer events (8bytes) */
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struct evrec_timer {
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unsigned char code;
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unsigned char cmd;
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unsigned char dummy1, dummy2;
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unsigned int time;
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};
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/* long extended events (8bytes) */
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struct evrec_extended {
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unsigned char code;
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unsigned char cmd;
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unsigned char dev;
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unsigned char chn;
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unsigned char p1, p2, p3, p4;
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};
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/* long channel events (8bytes) */
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struct evrec_long {
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unsigned char code;
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unsigned char dev;
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unsigned char cmd;
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unsigned char chn;
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unsigned char p1, p2;
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unsigned short val;
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};
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/* channel voice events (8bytes) */
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struct evrec_voice {
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unsigned char code;
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unsigned char dev;
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unsigned char cmd;
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unsigned char chn;
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unsigned char note, parm;
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unsigned short dummy;
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};
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/* sysex events (8bytes) */
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struct evrec_sysex {
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unsigned char code;
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unsigned char dev;
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unsigned char buf[6];
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};
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/* event record */
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union evrec {
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struct evrec_short s;
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struct evrec_note n;
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struct evrec_long l;
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struct evrec_voice v;
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struct evrec_timer t;
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struct evrec_extended e;
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struct evrec_sysex x;
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unsigned int echo;
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unsigned char c[LONG_EVENT_SIZE];
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};
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#define ev_is_long(ev) ((ev)->s.code >= 128)
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#define ev_length(ev) ((ev)->s.code >= 128 ? LONG_EVENT_SIZE : SHORT_EVENT_SIZE)
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int snd_seq_oss_process_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev);
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int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *q);
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int snd_seq_oss_event_input(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop);
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#endif /* __SEQ_OSS_EVENT_H */
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