// Emacs style mode select   -*- C++ -*- //-----------------------------------------------------------------------------//// $Id: linux.c,v 1.3 2000/04/30 19:56:02 metzgermeister Exp $//// Copyright (C) 1993-1996 by id Software, Inc.// Portions Copyright (C) 1998-2000 by DooM Legacy Team.//// 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.////// $Log: linux.c,v $// Revision 1.3  2000/04/30 19:56:02  metzgermeister// remove warning//// Revision 1.2  2000/02/27 00:42:12  hurdler// fix CR+LF problem//// Revision 1.1.1.1  2000/02/22 20:32:33  hurdler// Initial import into CVS (v1.29 pr3)////// DESCRIPTION://      UNIX, soundserver for Linux i386.////-----------------------------------------------------------------------------#include <stdlib.h>#include <stdio.h>#include <fcntl.h>#include <unistd.h>#include <sys/ioctl.h>#ifdef LINUX#include <linux/soundcard.h>#endif#if defined(SCOOS5) || defined(SCOUW2)#include <sys/soundcard.h>#endif#include "soundsrv.h"int     audio_fd;int     audio_8bit_flag;voidmyioctl( 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){}voidI_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");        return;    }       // reset is broken in many sound drivers    //myioctl(audio_fd, SNDCTL_DSP_RESET, 0);    if (getenv("DOOM_SOUND_SAMPLEBITS") == NULL)    {        myioctl(audio_fd, SNDCTL_DSP_GETFMTS, &i);        if (i&=AFMT_S16_LE)        {            myioctl(audio_fd, SNDCTL_DSP_SETFMT, &i);            i = 11 | (2<<16);                                                       myioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i);            i=1;                myioctl(audio_fd, SNDCTL_DSP_STEREO, &i);            fprintf(stderr, "sndserver: Using 16 bit sound card\n");        }        else        {            i=AFMT_U8;            myioctl(audio_fd, SNDCTL_DSP_SETFMT, &i);            i = 10 | (2<<16);                                                       myioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i);            audio_8bit_flag++;            fprintf(stderr, "sndserver: Using 8 bit sound card\n");        }    }    else    {        i=AFMT_U8;        myioctl(audio_fd, SNDCTL_DSP_SETFMT, &i);        i = 10 | (2<<16);                                                   myioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i);        audio_8bit_flag++;        fprintf(stderr, "sndserver: Using 8 bit sound card\n");    }    i=11025;    myioctl(audio_fd, SNDCTL_DSP_SPEED, &i);}voidI_SubmitOutputBuffer( void* samples,  int   samplecount ){    if (audio_fd >= 0)    {        if (!audio_8bit_flag)            write(audio_fd, samples, samplecount*4);        else            write(audio_fd, samples, samplecount);    }}void I_ShutdownSound(void){    if (audio_fd >= 0)        close(audio_fd);}void I_ShutdownMusic(void){}