diff options
Diffstat (limited to 'sound/core/seq/oss/seq_oss_event.h')
-rw-r--r-- | sound/core/seq/oss/seq_oss_event.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/sound/core/seq/oss/seq_oss_event.h b/sound/core/seq/oss/seq_oss_event.h new file mode 100644 index 000000000..b4f723949 --- /dev/null +++ b/sound/core/seq/oss/seq_oss_event.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * OSS compatible sequencer driver + * + * seq_oss_event.h - OSS event queue record + * + * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> + */ + +#ifndef __SEQ_OSS_EVENT_H +#define __SEQ_OSS_EVENT_H + +#include "seq_oss_device.h" + +#define SHORT_EVENT_SIZE 4 +#define LONG_EVENT_SIZE 8 + +/* short event (4bytes) */ +struct evrec_short { + unsigned char code; + unsigned char parm1; + unsigned char dev; + unsigned char parm2; +}; + +/* short note events (4bytes) */ +struct evrec_note { + unsigned char code; + unsigned char chn; + unsigned char note; + unsigned char vel; +}; + +/* long timer events (8bytes) */ +struct evrec_timer { + unsigned char code; + unsigned char cmd; + unsigned char dummy1, dummy2; + unsigned int time; +}; + +/* long extended events (8bytes) */ +struct evrec_extended { + unsigned char code; + unsigned char cmd; + unsigned char dev; + unsigned char chn; + unsigned char p1, p2, p3, p4; +}; + +/* long channel events (8bytes) */ +struct evrec_long { + unsigned char code; + unsigned char dev; + unsigned char cmd; + unsigned char chn; + unsigned char p1, p2; + unsigned short val; +}; + +/* channel voice events (8bytes) */ +struct evrec_voice { + unsigned char code; + unsigned char dev; + unsigned char cmd; + unsigned char chn; + unsigned char note, parm; + unsigned short dummy; +}; + +/* sysex events (8bytes) */ +struct evrec_sysex { + unsigned char code; + unsigned char dev; + unsigned char buf[6]; +}; + +/* event record */ +union evrec { + struct evrec_short s; + struct evrec_note n; + struct evrec_long l; + struct evrec_voice v; + struct evrec_timer t; + struct evrec_extended e; + struct evrec_sysex x; + unsigned int echo; + unsigned char c[LONG_EVENT_SIZE]; +}; + +#define ev_is_long(ev) ((ev)->s.code >= 128) +#define ev_length(ev) ((ev)->s.code >= 128 ? LONG_EVENT_SIZE : SHORT_EVENT_SIZE) + +int snd_seq_oss_process_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev); +int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *q); +int snd_seq_oss_event_input(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop); + + +#endif /* __SEQ_OSS_EVENT_H */ |