sound/core/seq/oss/seq_oss_event.h

   1 /*
   2  * OSS compatible sequencer driver
   3  *
   4  * seq_oss_event.h - OSS event queue record
   5  *
   6  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #ifndef __SEQ_OSS_EVENT_H
  24 #define __SEQ_OSS_EVENT_H
  25
  26 #include "seq_oss_device.h"
  27
  28 #define SHORT_EVENT_SIZE        4
  29 #define LONG_EVENT_SIZE         8
  30
  31 /* short event (4bytes) */
  32 typedef struct evrec_short_t {
  33         unsigned char code;
  34         unsigned char parm1;
  35         unsigned char dev;
  36         unsigned char parm2;
  37 } evrec_short_t;
  38
  39 /* short note events (4bytes) */
  40 typedef struct evrec_note_t {
  41         unsigned char code;
  42         unsigned char chn;
  43         unsigned char note;
  44         unsigned char vel;
  45 } evrec_note_t;
  46
  47 /* long timer events (8bytes) */
  48 typedef struct evrec_timer_t {
  49         unsigned char code;
  50         unsigned char cmd;
  51         unsigned char dummy1, dummy2;
  52         unsigned int time;
  53 } evrec_timer_t;
  54
  55 /* long extended events (8bytes) */
  56 typedef struct evrec_extended_t {
  57         unsigned char code;
  58         unsigned char cmd;
  59         unsigned char dev;
  60         unsigned char chn;
  61         unsigned char p1, p2, p3, p4;
  62 } evrec_extended_t;
  63
  64 /* long channel events (8bytes) */
  65 typedef struct evrec_long_t {
  66         unsigned char code;
  67         unsigned char dev;
  68         unsigned char cmd;
  69         unsigned char chn;
  70         unsigned char p1, p2;
  71         unsigned short val;
  72 } evrec_long_t;
  73
  74 /* channel voice events (8bytes) */
  75 typedef struct evrec_voice_t {
  76         unsigned char code;
  77         unsigned char dev;
  78         unsigned char cmd;
  79         unsigned char chn;
  80         unsigned char note, parm;
  81         unsigned short dummy;
  82 } evrec_voice_t;
  83
  84 /* sysex events (8bytes) */
  85 typedef struct evrec_sysex_t {
  86         unsigned char code;
  87         unsigned char dev;
  88         unsigned char buf[6];
  89 } evrec_sysex_t;
  90
  91 /* event record */
  92 union evrec_t {
  93         evrec_short_t s;
  94         evrec_note_t n;
  95         evrec_long_t l;
  96         evrec_voice_t v;
  97         evrec_timer_t t;
  98         evrec_extended_t e;
  99         evrec_sysex_t x;
 100         unsigned int echo;
 101         unsigned char c[LONG_EVENT_SIZE];
 102 };
 103
 104 #define ev_is_long(ev) ((ev)->s.code >= 128)
 105 #define ev_length(ev) ((ev)->s.code >= 128 ? LONG_EVENT_SIZE : SHORT_EVENT_SIZE)
 106
 107 int snd_seq_oss_process_event(seq_oss_devinfo_t *dp, evrec_t *q, snd_seq_event_t *ev);
 108 int snd_seq_oss_process_timer_event(seq_oss_timer_t *rec, evrec_t *q);
 109 int snd_seq_oss_event_input(snd_seq_event_t *ev, int direct, void *private_data, int atomic, int hop);
 110
 111
 112 #endif /* __SEQ_OSS_EVENT_H */