From: "laine" <laine AT ks DOT iwn DOT fi>
Newsgroups: comp.os.msdos.djgpp
Subject: Mods and Wavs with MikAllegro (MikMod)
Date: 30 Jan 1998 18:37:52 GMT
Organization: Clinet, Espoo, Finland.
Lines: 130
Message-ID: <01bd2d62$738ff0e0$453e64c2@default>
NNTP-Posting-Host: dialup204.iwn.fi
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

Hi!

I'vedone this program wich should (at least I think so ;)
play a mod (.xm) and when space is pressed it should make
a sound. It uses MikMod and Allegro (MikAllegro 3.0). 

It plays the music ok but the sounds don't work. MikMod
only gives the following message:
	predict stopped it. current 1, end -1

What's wrong. The code is below.

Thanks.

Jarkko Laine
www: http://www.ks.iwn.fi/~laine/line_a.html

----------------------------------------------------------------------------
--

The code:


#include <stdio.h>
#include <mikmod.h>
#include <allegro.h>

UNIMOD *fn;

void tickhandler(void)
{
    MP_HandleTick();    /* play 1 tick of the module */
    MD_SetBPM(mp_bpm);
}

void aseta_mikmod (void)
{
    setvbuf(stdout, NULL, _IONBF, 0);
    srandom(_farpeekw(_dos_ds, 0x0046C));

//  Initialize soundcard parameters.. you _have_ to do this
//  before calling MD_Init(), and it's illegal to change them
//  after you've called MD_Init()

    md_mixfreq      =44100;          /* standard mixing freq */
    md_dmabufsize   =2000;           /* standard dma buf size */
    md_mode         =7;              /* standard mixing mode */
    md_device       =0;              /* standard device: autodetect */
    
    ML_RegisterLoader(&load_xm);   // Register the loaders we want to use..

    MD_RegisterDriver(&drv_nos);    // Register the drivers we want to use:
    MD_RegisterDriver(&drv_ss);
	 MD_RegisterDriver(&drv_sb);
	 MD_RegisterDriver(&drv_gus);

    MD_RegisterPlayer(tickhoituri);

    allegro_init();
    install_keyboard();
    install_timer();

    if(!MD_Init())  // initialize soundcard 
    {
		printf("Driver error: %s.\n",myerr);
      exit (1);
    }

    printf("\nUsing %s for %d bit %s sound at %u Hz\n\n",
			md_driver->Name,
			(md_mode&DMODE_16BITS) ? 16:8,
			(md_mode&DMODE_STEREO) ? "stereo":"mono",
			md_mixfreq);
}

void play_mikalg_sample (MSAMPLE *sample)
{
    static int channel_no = 24;

    MD_VoiceSetVolume(channel_no, 61);
    MD_VoiceSetPanning(channel_no, 127);
    MD_VoiceSetFrequency(channel_no, sample->c2spd);
    MD_VoicePlay(channel_no ,sample->handle, 0, sample->length,0,0,
sample->flags);

    channel_no++;
    if (channel_no >= 32)
        channel_no=24;
}

int main (void)
{
  MSAMPLE *aani;

  aseta_mikmod();
  allegro_init();
  install_timer();
  install_keyboard();

  fn=ML_LoadFN("sc/autstp.xm");    // load the the music. If it didn't
work,
  if(fn==NULL)                // exit with errormsg
  {
      printf("MikMod Error: %s\n",myerr);
      exit (1);
  }

  mp_loop=TRUE;
  md_numchn=32;
  MP_Init(fn);
  MD_PlayStart();         // Aletaan soittaa

  install_int (MD_Update, 10);  // update the buffer every 10 msec

  aani=MW_LoadWavFN("kops.wav");

  while(!key[KEY_ESC]){
     if(key[KEY_SPACE]){
       play_mikalg_sample(aani);
       clear_keybuf();
     }
  }

  MD_PlayStop();              // stop playing*/
  ML_Free(fn);                // and free the module*/
  MD_Exit();

  allegro_exit();
}