1 #ifndef _ULTRASOUND_H_
2 #define _ULTRASOUND_H_
3 /*
4 * ultrasound.h - Macros for programming the Gravis Ultrasound
5 * These macros are extremely device dependent
6 * and not portable.
7 */
8 /*
9 * Copyright (C) by Hannu Savolainen 1993-1997
10 *
11 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
12 * Version 2 (June 1991). See the "COPYING" file distributed with this software
13 * for more info.
14 */
15
16
17 /*
18 * Private events for Gravis Ultrasound (GUS)
19 *
20 * Format:
21 * byte 0 - SEQ_PRIVATE (0xfe)
22 * byte 1 - Synthesizer device number (0-N)
23 * byte 2 - Command (see below)
24 * byte 3 - Voice number (0-31)
25 * bytes 4 and 5 - parameter P1 (unsigned short)
26 * bytes 6 and 7 - parameter P2 (unsigned short)
27 *
28 * Commands:
29 * Each command affects one voice defined in byte 3.
30 * Unused parameters (P1 and/or P2 *MUST* be initialized to zero).
31 * _GUS_NUMVOICES - Sets max. number of concurrent voices (P1=14-31, default 16)
32 * _GUS_VOICESAMPLE- ************ OBSOLETE *************
33 * _GUS_VOICEON - Starts voice (P1=voice mode)
34 * _GUS_VOICEOFF - Stops voice (no parameters)
35 * _GUS_VOICEFADE - Stops the voice smoothly.
36 * _GUS_VOICEMODE - Alters the voice mode, don't start or stop voice (P1=voice mode)
37 * _GUS_VOICEBALA - Sets voice balence (P1, 0=left, 7=middle and 15=right, default 7)
38 * _GUS_VOICEFREQ - Sets voice (sample) playback frequency (P1=Hz)
39 * _GUS_VOICEVOL - Sets voice volume (P1=volume, 0xfff=max, 0xeff=half, 0x000=off)
40 * _GUS_VOICEVOL2 - Sets voice volume (P1=volume, 0xfff=max, 0xeff=half, 0x000=off)
41 * (Like GUS_VOICEVOL but doesn't change the hw
42 * volume. It just updates volume in the voice table).
43 *
44 * _GUS_RAMPRANGE - Sets limits for volume ramping (P1=low volume, P2=high volume)
45 * _GUS_RAMPRATE - Sets the speed for volume ramping (P1=scale, P2=rate)
46 * _GUS_RAMPMODE - Sets the volume ramping mode (P1=ramping mode)
47 * _GUS_RAMPON - Starts volume ramping (no parameters)
48 * _GUS_RAMPOFF - Stops volume ramping (no parameters)
49 * _GUS_VOLUME_SCALE - Changes the volume calculation constants
50 * for all voices.
51 */
52
53 #define _GUS_NUMVOICES 0x00
54 #define _GUS_VOICESAMPLE 0x01 /* OBSOLETE */
55 #define _GUS_VOICEON 0x02
56 #define _GUS_VOICEOFF 0x03
57 #define _GUS_VOICEMODE 0x04
58 #define _GUS_VOICEBALA 0x05
59 #define _GUS_VOICEFREQ 0x06
60 #define _GUS_VOICEVOL 0x07
61 #define _GUS_RAMPRANGE 0x08
62 #define _GUS_RAMPRATE 0x09
63 #define _GUS_RAMPMODE 0x0a
64 #define _GUS_RAMPON 0x0b
65 #define _GUS_RAMPOFF 0x0c
66 #define _GUS_VOICEFADE 0x0d
67 #define _GUS_VOLUME_SCALE 0x0e
68 #define _GUS_VOICEVOL2 0x0f
69 #define _GUS_VOICE_POS 0x10
70
71 /*
72 * GUS API macros
73 */
74
75 #define _GUS_CMD(chn, voice, cmd, p1, p2) \
76 {_SEQ_NEEDBUF(8); _seqbuf[_seqbufptr] = SEQ_PRIVATE;\
77 _seqbuf[_seqbufptr+1] = (chn); _seqbuf[_seqbufptr+2] = cmd;\
78 _seqbuf[_seqbufptr+3] = voice;\
79 *(unsigned short*)&_seqbuf[_seqbufptr+4] = p1;\
80 *(unsigned short*)&_seqbuf[_seqbufptr+6] = p2;\
81 _SEQ_ADVBUF(8);}
82
83 #define GUS_NUMVOICES(chn, p1) _GUS_CMD(chn, 0, _GUS_NUMVOICES, (p1), 0)
84 #define GUS_VOICESAMPLE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICESAMPLE, (p1), 0) /* OBSOLETE */
85 #define GUS_VOICEON(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEON, (p1), 0)
86 #define GUS_VOICEOFF(chn, voice) _GUS_CMD(chn, voice, _GUS_VOICEOFF, 0, 0)
87 #define GUS_VOICEFADE(chn, voice) _GUS_CMD(chn, voice, _GUS_VOICEFADE, 0, 0)
88 #define GUS_VOICEMODE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEMODE, (p1), 0)
89 #define GUS_VOICEBALA(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEBALA, (p1), 0)
90 #define GUS_VOICEFREQ(chn, voice, p) _GUS_CMD(chn, voice, _GUS_VOICEFREQ, \
91 (p) & 0xffff, ((p) >> 16) & 0xffff)
92 #define GUS_VOICEVOL(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEVOL, (p1), 0)
93 #define GUS_VOICEVOL2(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEVOL2, (p1), 0)
94 #define GUS_RAMPRANGE(chn, voice, low, high) _GUS_CMD(chn, voice, _GUS_RAMPRANGE, (low), (high))
95 #define GUS_RAMPRATE(chn, voice, p1, p2) _GUS_CMD(chn, voice, _GUS_RAMPRATE, (p1), (p2))
96 #define GUS_RAMPMODE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_RAMPMODE, (p1), 0)
97 #define GUS_RAMPON(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_RAMPON, (p1), 0)
98 #define GUS_RAMPOFF(chn, voice) _GUS_CMD(chn, voice, _GUS_RAMPOFF, 0, 0)
99 #define GUS_VOLUME_SCALE(chn, voice, p1, p2) _GUS_CMD(chn, voice, _GUS_VOLUME_SCALE, (p1), (p2))
100 #define GUS_VOICE_POS(chn, voice, p) _GUS_CMD(chn, voice, _GUS_VOICE_POS, \
101 (p) & 0xffff, ((p) >> 16) & 0xffff)
102
103 #endif
104
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