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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: linux.c,v 1.4 2001/05/29 22:18:41 bock 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 1.4 2001/05/29 22:18:41 bock
// Small BSD commit: build r_opengl.so, sndserver
//
// 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
#ifdef FREEBSD
#include <machine/soundcard.h>
#else
#include <linux/soundcard.h>
#endif
#endif
#if defined(SCOOS5) || defined(SCOUW2)
#include <sys/soundcard.h>
#endif
#include "soundsrv.h"
int audio_fd;
int audio_8bit_flag;
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");
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);
}
void
I_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)
{
}
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