104 lines
4.4 KiB
C
104 lines
4.4 KiB
C
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#ifndef _ULTRASOUND_H_
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#define _ULTRASOUND_H_
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/*
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* ultrasound.h - Macros for programming the Gravis Ultrasound
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* These macros are extremely device dependent
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* and not portable.
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*/
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/*
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* Copyright (C) by Hannu Savolainen 1993-1997
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*
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* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
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* Version 2 (June 1991). See the "COPYING" file distributed with this software
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* for more info.
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*/
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/*
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* Private events for Gravis Ultrasound (GUS)
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*
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* Format:
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* byte 0 - SEQ_PRIVATE (0xfe)
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* byte 1 - Synthesizer device number (0-N)
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* byte 2 - Command (see below)
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* byte 3 - Voice number (0-31)
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* bytes 4 and 5 - parameter P1 (unsigned short)
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* bytes 6 and 7 - parameter P2 (unsigned short)
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*
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* Commands:
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* Each command affects one voice defined in byte 3.
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* Unused parameters (P1 and/or P2 *MUST* be initialized to zero).
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* _GUS_NUMVOICES - Sets max. number of concurrent voices (P1=14-31, default 16)
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* _GUS_VOICESAMPLE- ************ OBSOLETE *************
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* _GUS_VOICEON - Starts voice (P1=voice mode)
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* _GUS_VOICEOFF - Stops voice (no parameters)
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* _GUS_VOICEFADE - Stops the voice smoothly.
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* _GUS_VOICEMODE - Alters the voice mode, don't start or stop voice (P1=voice mode)
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* _GUS_VOICEBALA - Sets voice balance (P1, 0=left, 7=middle and 15=right, default 7)
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* _GUS_VOICEFREQ - Sets voice (sample) playback frequency (P1=Hz)
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* _GUS_VOICEVOL - Sets voice volume (P1=volume, 0xfff=max, 0xeff=half, 0x000=off)
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* _GUS_VOICEVOL2 - Sets voice volume (P1=volume, 0xfff=max, 0xeff=half, 0x000=off)
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* (Like GUS_VOICEVOL but doesn't change the hw
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* volume. It just updates volume in the voice table).
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*
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* _GUS_RAMPRANGE - Sets limits for volume ramping (P1=low volume, P2=high volume)
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* _GUS_RAMPRATE - Sets the speed for volume ramping (P1=scale, P2=rate)
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* _GUS_RAMPMODE - Sets the volume ramping mode (P1=ramping mode)
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* _GUS_RAMPON - Starts volume ramping (no parameters)
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* _GUS_RAMPOFF - Stops volume ramping (no parameters)
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* _GUS_VOLUME_SCALE - Changes the volume calculation constants
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* for all voices.
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*/
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#define _GUS_NUMVOICES 0x00
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#define _GUS_VOICESAMPLE 0x01 /* OBSOLETE */
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#define _GUS_VOICEON 0x02
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#define _GUS_VOICEOFF 0x03
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#define _GUS_VOICEMODE 0x04
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#define _GUS_VOICEBALA 0x05
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#define _GUS_VOICEFREQ 0x06
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#define _GUS_VOICEVOL 0x07
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#define _GUS_RAMPRANGE 0x08
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#define _GUS_RAMPRATE 0x09
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#define _GUS_RAMPMODE 0x0a
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#define _GUS_RAMPON 0x0b
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#define _GUS_RAMPOFF 0x0c
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#define _GUS_VOICEFADE 0x0d
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#define _GUS_VOLUME_SCALE 0x0e
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#define _GUS_VOICEVOL2 0x0f
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#define _GUS_VOICE_POS 0x10
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/*
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* GUS API macros
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*/
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#define _GUS_CMD(chn, voice, cmd, p1, p2) \
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{_SEQ_NEEDBUF(8); _seqbuf[_seqbufptr] = SEQ_PRIVATE;\
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_seqbuf[_seqbufptr+1] = (chn); _seqbuf[_seqbufptr+2] = cmd;\
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_seqbuf[_seqbufptr+3] = voice;\
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*(unsigned short*)&_seqbuf[_seqbufptr+4] = p1;\
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*(unsigned short*)&_seqbuf[_seqbufptr+6] = p2;\
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_SEQ_ADVBUF(8);}
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#define GUS_NUMVOICES(chn, p1) _GUS_CMD(chn, 0, _GUS_NUMVOICES, (p1), 0)
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#define GUS_VOICESAMPLE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICESAMPLE, (p1), 0) /* OBSOLETE */
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#define GUS_VOICEON(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEON, (p1), 0)
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#define GUS_VOICEOFF(chn, voice) _GUS_CMD(chn, voice, _GUS_VOICEOFF, 0, 0)
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#define GUS_VOICEFADE(chn, voice) _GUS_CMD(chn, voice, _GUS_VOICEFADE, 0, 0)
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#define GUS_VOICEMODE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEMODE, (p1), 0)
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#define GUS_VOICEBALA(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEBALA, (p1), 0)
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#define GUS_VOICEFREQ(chn, voice, p) _GUS_CMD(chn, voice, _GUS_VOICEFREQ, \
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(p) & 0xffff, ((p) >> 16) & 0xffff)
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#define GUS_VOICEVOL(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEVOL, (p1), 0)
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#define GUS_VOICEVOL2(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_VOICEVOL2, (p1), 0)
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#define GUS_RAMPRANGE(chn, voice, low, high) _GUS_CMD(chn, voice, _GUS_RAMPRANGE, (low), (high))
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#define GUS_RAMPRATE(chn, voice, p1, p2) _GUS_CMD(chn, voice, _GUS_RAMPRATE, (p1), (p2))
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#define GUS_RAMPMODE(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_RAMPMODE, (p1), 0)
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#define GUS_RAMPON(chn, voice, p1) _GUS_CMD(chn, voice, _GUS_RAMPON, (p1), 0)
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#define GUS_RAMPOFF(chn, voice) _GUS_CMD(chn, voice, _GUS_RAMPOFF, 0, 0)
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#define GUS_VOLUME_SCALE(chn, voice, p1, p2) _GUS_CMD(chn, voice, _GUS_VOLUME_SCALE, (p1), (p2))
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#define GUS_VOICE_POS(chn, voice, p) _GUS_CMD(chn, voice, _GUS_VOICE_POS, \
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(p) & 0xffff, ((p) >> 16) & 0xffff)
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#endif
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