119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
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// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id: linux.c,v 1.3 1997/01/26 07:45:01 b1 Exp $
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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//
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// $Log: linux.c,v $
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// Revision 1.3 1997/01/26 07:45:01 b1
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// 2nd formatting run, fixed a few warnings as well.
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//
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// Revision 1.2 1997/01/21 19:00:01 b1
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// First formatting run:
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// using Emacs cc-mode.el indentation for C++ now.
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//
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// Revision 1.1 1997/01/19 17:22:45 b1
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// Initial check in DOOM sources as of Jan. 10th, 1997
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//
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//
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// DESCRIPTION:
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// UNIX, soundserver for Linux i386.
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//
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//-----------------------------------------------------------------------------
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static const char rcsid[] = "$Id: linux.c,v 1.3 1997/01/26 07:45:01 b1 Exp $";
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/soundcard.h>
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#include "soundsrv.h"
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int audio_fd;
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void
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myioctl
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( int fd,
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int command,
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int* arg )
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{
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int rc;
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extern int errno;
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rc = ioctl(fd, command, arg);
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if (rc < 0)
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{
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fprintf(stderr, "ioctl(dsp,%d,arg) failed\n", command);
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fprintf(stderr, "errno=%d\n", errno);
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exit(-1);
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}
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}
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void I_InitMusic(void)
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{
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}
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void
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I_InitSound
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( int samplerate,
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int samplesize )
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{
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int i;
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audio_fd = open("/dev/dsp", O_WRONLY);
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if (audio_fd<0)
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fprintf(stderr, "Could not open /dev/dsp\n");
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i = 11 | (2<<16);
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myioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &i);
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myioctl(audio_fd, SNDCTL_DSP_RESET, 0);
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i=11025;
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myioctl(audio_fd, SNDCTL_DSP_SPEED, &i);
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i=1;
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myioctl(audio_fd, SNDCTL_DSP_STEREO, &i);
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myioctl(audio_fd, SNDCTL_DSP_GETFMTS, &i);
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if (i&=AFMT_S16_LE)
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myioctl(audio_fd, SNDCTL_DSP_SETFMT, &i);
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else
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fprintf(stderr, "Could not play signed 16 data\n");
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}
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void
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I_SubmitOutputBuffer
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( void* samples,
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int samplecount )
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{
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write(audio_fd, samples, samplecount*4);
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}
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void I_ShutdownSound(void)
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{
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close(audio_fd);
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}
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void I_ShutdownMusic(void)
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{
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}
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