/*
 *-----------------------------------------------------------------------------
 *
 * $Log: linux.c,v $
 *
 * Revision 2.0  1999/01/24 00:52:12  Andre Wertmann
 * changed to work with Heretic 
 *
 * Revision 1.4  1998/06/23 12:21:38  rafaj
 * included missing <sys/ioctl.h>
 *
 * Revision 1.3  1997/01/26 07:45:01  b1
 * 2nd formatting run, fixed a few warnings as well.
 *
 * Revision 1.2  1997/01/21 19:00:01  b1
 * First formatting run:
 *  using Emacs cc-mode.el indentation for C++ now.
 *
 * Revision 1.1  1997/01/19 17:22:45  b1
 * Initial check in DOOM sources as of Jan. 10th, 1997
 *
 *
 * DESCRIPTION:
 *	UNIX, soundserver for Linux i386.
 *
 *-----------------------------------------------------------------------------
 */

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>

#include <soundcard.h>

#include "soundsrv.h"

int	audio_fd;


void myioctl( int fd, int command, int*	arg )
{   
  int		rc;
/*  extern int	errno;*/
    
  rc = ioctl(fd, command, arg);  
  if (rc < 0)
    {
      fprintf(stderr, "ioctl(dsp,%d,arg) failed\n", command);
      fprintf(stderr, "errno=%d\n", errno);
      exit(-1);
    }
}

void I_InitMusic(void)
{
}

void I_InitSound( int samplerate, int samplesize )
{
  int i;
  
  audio_fd = open("/dev/dsp", O_WRONLY);
  if (audio_fd<0)
    fprintf(stderr, "Could not open /dev/dsp\n");
  
  
  i = 11 | (2<<16);                                           
  myioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i);
  
  myioctl(audio_fd, SNDCTL_DSP_RESET, 0);
  i=11025;
  myioctl(audio_fd, SNDCTL_DSP_SPEED, &i);
  i=1;    
  myioctl(audio_fd, SNDCTL_DSP_STEREO, &i);
  
  myioctl(audio_fd, SNDCTL_DSP_GETFMTS, &i);
  if (i&=AFMT_S16_LE)    
    myioctl(audio_fd, SNDCTL_DSP_SETFMT, &i);
  else
    fprintf(stderr, "Could not play signed 16 data\n");
  
}

void I_SubmitOutputBuffer( void* samples, int samplecount )
{
  write(audio_fd, samples, samplecount*4);
}

void I_ShutdownSound(void)
{
  close(audio_fd);
}

void I_ShutdownMusic(void)
{
}