multimedia/init.c

   1 /*
   2  * Initialization procedures for multimedia
   3  *
   4  * Copyright 1998 Luiz Otavio L. Zorzella
   5  */
   6
   7 #include <unistd.h>
   8 #include <fcntl.h>
   9 #include <sys/ioctl.h>
  10 #include "windows.h"
  11 #include "multimedia.h"
  12 #include "mmsystem.h"
  13 #include "xmalloc.h"
  14 #include "debug.h"
  15
  16 #ifdef HAVE_OSS
  17
  18 extern int MODM_NUMDEVS;
  19 extern LPMIDIOUTCAPS16 midiDevices[MAX_MIDIOUTDRV];
  20
  21 #endif
  22
  23 /**************************************************************************
  24  *                      unixToWindowsDeviceType                 [internal]
  25  *
  26  * return the Windows equivalent to a Unix Device Type
  27  *
  28  */
  29 #ifdef HAVE_OSS
  30 int unixToWindowsDeviceType(int type)
  31 {
  32   /* MOD_MIDIPORT     output port
  33    * MOD_SYNTH        generic internal synth
  34    * MOD_SQSYNTH      square wave internal synth
  35    * MOD_FMSYNTH      FM internal synth
  36    * MOD_MAPPER       MIDI mapper
  37    */
  38
  39   /* FIXME Is this really the correct equivalence from UNIX to Windows Sound type */
  40
  41   switch (type) {
  42   case SYNTH_TYPE_FM:     return MOD_FMSYNTH;
  43   case SYNTH_TYPE_SAMPLE: return MOD_SYNTH;
  44   case SYNTH_TYPE_MIDI:   return MOD_MIDIPORT;
  45   default:
  46     ERR(midi, "Cannot determine the type of this midi device. Assuming FM Synth\n");
  47     return MOD_FMSYNTH;
  48   }
  49 }
  50 #endif
  51
  52 /**************************************************************************
  53  *                      MultimediaInit                          [internal]
  54  *
  55  * Initializes the MIDI devices information variables
  56  *
  57  */
  58 BOOL32 MULTIMEDIA_Init (void)
  59 {
  60 #ifdef HAVE_OSS
  61   int i, status, numsynthdevs=255, nummididevs=255;
  62   struct synth_info sinfo;
  63   struct midi_info minfo;
  64   int fd;        /* file descriptor for MIDI_DEV */
  65
  66   TRACE (midi, "Initializing the MIDI variables.\n");
  67   /* try to open device */
  68   fd = open(MIDI_DEV, O_WRONLY);
  69   if (fd == -1) {
  70     TRACE (midi, "No soundcards founds: unable to open `%s'.\n", MIDI_DEV);
  71     return TRUE;
  72   }
  73
  74   /* find how many Synth devices are there in the system */
  75   status = ioctl(fd, SNDCTL_SEQ_NRSYNTHS, &numsynthdevs);
  76
  77   if (numsynthdevs > MAX_MIDIOUTDRV) {
  78     ERR (midi, "MAX_MIDIOUTDRV was enough for the number of devices. Some FM devices will not be available.\n");
  79     numsynthdevs = MAX_MIDIOUTDRV;
  80   }
  81
  82   if (status == -1) {
  83     ERR (midi, "ioctl failed.\n");
  84     return TRUE;
  85   }
  86
  87   for (i = 0 ; i < numsynthdevs ; i++) {
  88     LPMIDIOUTCAPS16 tmplpCaps;
  89
  90     sinfo.device = i;
  91     status = ioctl(fd, SNDCTL_SYNTH_INFO, &sinfo);
  92     if (status == -1) {
  93       ERR(midi, "ioctl failed.\n");
  94       return TRUE;
  95     }
  96
  97     tmplpCaps = xmalloc (sizeof (MIDIOUTCAPS16));
  98     /* We also have the information sinfo.synth_subtype, not used here
  99      */
 100
 101     /* Manufac ID. We do not have access to this with soundcard.h
 102      * Does not seem to be a problem, because in mmsystem.h only
 103      * Microsoft's ID is listed.
 104      */
 105     tmplpCaps->wMid = 0x00FF;
 106     tmplpCaps->wPid = 0x0001;   /* FIXME Product ID  */
 107     tmplpCaps->vDriverVersion = 0x001; /* Product Version. We simply say "1" */
 108     strcpy(tmplpCaps->szPname, sinfo.name);
 109
 110     tmplpCaps->wTechnology = unixToWindowsDeviceType (sinfo.synth_type);
 111     tmplpCaps->wVoices     = sinfo.nr_voices;
 112
 113     /* FIXME Is it possible to know the maximum
 114      * number of simultaneous notes of a soundcard ?
 115      * I beleive we don't have this information, but
 116      * it's probably equal or more than wVoices
 117      */
 118     tmplpCaps->wNotes      = sinfo.nr_voices;
 119
 120     /* FIXME Do we have this information?
 121      * Assuming the soundcards can handle
 122      * MIDICAPS_VOLUME and MIDICAPS_LRVOLUME but
 123      * not MIDICAPS_CACHE.
 124      */
 125     tmplpCaps->dwSupport   = MIDICAPS_VOLUME|MIDICAPS_LRVOLUME;
 126
 127     midiDevices[i] = tmplpCaps;
 128
 129     TRACE(midi,"techn = %d voices=%d notes = %d support = %ld\n",tmplpCaps->wTechnology,tmplpCaps->wVoices,tmplpCaps->wNotes,tmplpCaps->dwSupport);
 130   }
 131
 132   /* find how many MIDI devices are there in the system */
 133   status = ioctl(fd, SNDCTL_SEQ_NRMIDIS, &nummididevs);
 134   if (status == -1) {
 135     ERR(midi, "ioctl failed.\n");
 136     return TRUE;
 137   }
 138
 139   if (numsynthdevs + nummididevs > MAX_MIDIOUTDRV) {
 140     ERR(midi, "MAX_MIDIOUTDRV was enough for the number of devices. Some MIDI devices will not be available.\n");
 141     nummididevs = MAX_MIDIOUTDRV - numsynthdevs;
 142   }
 143
 144   /* windows does not seem to diferentiate Synth from MIDI devices */
 145   MODM_NUMDEVS = numsynthdevs + nummididevs;
 146
 147   for (i = 0 ; i < nummididevs ; i++) {
 148     LPMIDIOUTCAPS16 tmplpCaps;
 149
 150     minfo.device = i;
 151     status = ioctl(fd, SNDCTL_MIDI_INFO, &minfo);
 152     if (status == -1) {
 153       ERR(midi, "ioctl failed.\n");
 154       return TRUE;
 155     }
 156
 157     tmplpCaps = xmalloc (sizeof (MIDIOUTCAPS16));
 158     /* This whole part is somewhat obscure to me. I'll keep trying to dig
 159        info about it. If you happen to know, please tell us. The very descritive
 160        minfo.dev_type was not used here.
 161      */
 162     tmplpCaps->wMid = 0x00FF;   /* Manufac ID. We do not have access to this with soundcard.h
 163                                    Does not seem to be a problem, because in mmsystem.h only
 164                                    Microsoft's ID is listed */
 165     tmplpCaps->wPid = 0x0001;   /* FIXME Product ID */
 166     tmplpCaps->vDriverVersion = 0x001; /* Product Version. We simply say "1" */
 167     strcpy(tmplpCaps->szPname, minfo.name);
 168
 169     tmplpCaps->wTechnology =  MOD_MIDIPORT; /* FIXME Is this right? */
 170     tmplpCaps->wVoices     = 16;            /* Does it make any difference? */
 171     tmplpCaps->wNotes      = 16;            /* Does it make any difference? */
 172     tmplpCaps->dwSupport   = MIDICAPS_VOLUME|MIDICAPS_LRVOLUME; /* FIXME Does it make any difference? */
 173
 174     midiDevices[numsynthdevs + i] = tmplpCaps;
 175
 176     TRACE(midi,"techn = %d voices=%d notes = %d support = %ld\n",tmplpCaps->wTechnology,tmplpCaps->wVoices,tmplpCaps->wNotes,tmplpCaps->dwSupport);
 177   }
 178
 179   /* close file and exit */
 180   close(fd);
 181
 182 #endif /* HAVE_OSS */
 183
 184   return TRUE;
 185 }