include/linux/ultrasound.h

   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