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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 |