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mididrv.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2004 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/sound/mididrv.cpp,v 1.55 2004/12/14 01:02:55 fingolfin Exp $
 *
 */

#include "stdafx.h"

#include "base/engine.h"
#include "common/config-manager.h"
#include "common/str.h"
#include "sound/mididrv.h"

/** Internal list of all available 'midi' drivers. */
static const struct MidiDriverDescription midiDrivers[] = {
      {"auto", "Default", MD_AUTO},
      {"null", "No music", MD_NULL},

#if defined(WIN32) && !defined(_WIN32_WCE)
      {"windows", "Windows MIDI", MD_WINDOWS},
#endif

#if defined(UNIX) && !defined(__BEOS__) && !defined(MACOSX)
      {"seq", "SEQ", MD_SEQ},
#endif

#if defined(MACOSX)
      {"qt", "QuickTime", MD_QTMUSIC},
      {"core", "CoreAudio", MD_COREAUDIO},
#endif

#if defined(__MORPHOS__)
      {"etude", "Etude", MD_ETUDE},
#endif

#if defined(UNIX) && defined(USE_ALSA)
      {"alsa", "ALSA", MD_ALSA},
#endif

      {"adlib", "Adlib", MD_ADLIB},
      {"towns", "FM Towns", MD_TOWNS},
      {"pcspk", "PC Speaker", MD_PCSPK},
      {"pcjr", "IBM PCjr", MD_PCJR},
#ifdef USE_MT32EMU
      {"mt32", "MT-32", MD_MT32},
#endif

#if defined(__PALM_OS__)
      {"ypa1", "Yamaha Pa1", MD_YPA1},
      {"zodiac", "Tapwave Zodiac", MD_ZODIAC},
#endif
      {0, 0, 0}
};


00072 const MidiDriverDescription *MidiDriver::getAvailableMidiDrivers() {
      return midiDrivers;
}

00076 int MidiDriver::parseMusicDriver(const Common::String &str) {
      if (str.isEmpty())
            return -1;

      const char *s = str.c_str();
      const MidiDriverDescription *md = getAvailableMidiDrivers();

      while (md->name) {
            if (!scumm_stricmp(md->name, s)) {
                  return md->id;
            }
            md++;
      }

      return -1;
}

int MidiDriver::detectMusicDriver(int midiFlags) {
      int musicDriver = parseMusicDriver(ConfMan.get("music_driver"));
      /* Use the adlib sound driver if auto mode is selected,
       * and the game is one of those that want adlib as
       * default, OR if the game is an older game that doesn't
       * support anything else anyway. */
      if (musicDriver == MD_AUTO || musicDriver < 0) {
            if (midiFlags & MDT_PREFER_NATIVE) {
                  if (musicDriver == MD_AUTO) {
                        #if defined (WIN32) && !defined(_WIN32_WCE)
                              musicDriver = MD_WINDOWS; // MD_WINDOWS is default MidiDriver on windows targets
                        #elif defined(MACOSX)
                              musicDriver = MD_COREAUDIO;
                        #elif defined(__PALM_OS__)    // must be before mac
                              musicDriver = MD_YPA1;  // TODO : cahnge this and use Zodiac driver when needed
                        #elif defined(__MORPHOS__)
                              musicDriver = MD_ETUDE;
                        #elif defined (_WIN32_WCE) || defined(UNIX) || defined(X11_BACKEND)
                              // Always use MIDI emulation via adlib driver on CE and UNIX device
                        
                              // TODO: We should, for the Unix targets, attempt to detect
                              // whether a sequencer is available, and use it instead.
                              musicDriver = MD_ADLIB;
                        #else
                              musicDriver = MD_NULL;
                        #endif
                  } else
                        musicDriver = MD_ADLIB;
            } else
                  musicDriver = MD_TOWNS;
      }
      bool nativeMidiDriver =
            (musicDriver != MD_NULL && musicDriver != MD_ADLIB &&
             musicDriver != MD_PCSPK && musicDriver != MD_PCJR &&
             musicDriver != MD_TOWNS);

      if (nativeMidiDriver && !(midiFlags & MDT_NATIVE))
            musicDriver = MD_TOWNS;
      if (musicDriver == MD_TOWNS && !(midiFlags & MDT_TOWNS))
            musicDriver = MD_ADLIB;
      if (musicDriver == MD_ADLIB && !(midiFlags & MDT_ADLIB))
            musicDriver = MD_PCJR;
      if ((musicDriver == MD_PCSPK || musicDriver == MD_PCJR) && !(midiFlags & MDT_PCSPK))
            musicDriver = MD_NULL;

      return musicDriver;
}

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