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- /*
- * ---------------------------------------------------------------------------
- * sfxserver/device.c
- *
- * Copyright by Terry Evans 1994
- * tevans@cs.utah.edu, tevans@slc.unisys.com
- * ---------------------------------------------------------------------------
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer. 2.
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ---------------------------------------------------------------------------
- */
-
- #include <fcntl.h>
- #include <stdio.h>
- #include <linux/soundcard.h>
- #include <unistd.h>
-
-
- #include "global.h"
- #include "types.h"
- #include "error.h"
- #include "io.h"
- #include "device.h"
-
-
- int D_Init(char *device, int *frag_spec, int *frequency, int *stereo, int *frag_size)
- {
- int s_fd;
-
- IO_WriteStdout("D_Init: Initializing sound device\n");
-
- /* See if we have access to write to the dsp device */
- if(access(device, W_OK))
- E_ErrnoFatalError("D_Init", "unable to get write access to sound device %s", device);
-
- /* We open it and then close it to check if we have opening permission */
- if((s_fd = open(device, O_WRONLY)) == -1)
- E_ErrnoFatalError("D_Init", "unable to open sound device %s", device);
-
- if(ioctl(s_fd, SNDCTL_DSP_SETFRAGMENT, frag_spec))
- E_ErrnoFatalError("D_Init", "unable to ioctl SNDCTL_DSP_SETFRAGMENT on %s", device);
-
- if(ioctl(s_fd, SNDCTL_DSP_SPEED, frequency))
- E_ErrnoFatalError("D_Init", "unable to ioctl SNDCTL_DSP_SPEED on %s", device);
-
- if(ioctl(s_fd, SNDCTL_DSP_STEREO, stereo))
- E_ErrnoFatalError("D_Init", "unable to ioctl SNDCTL_DSP_STEREO on %s", device);
-
- if(ioctl(s_fd, SNDCTL_DSP_GETBLKSIZE, frag_size))
- E_ErrnoFatalError("D_Init", "unable to ioctl SNDCTL_DSP_GETBLKSIZE on %s", device);
-
- /* Return the file descriptor */
- return(s_fd);
- }
-
-
- void D_DeInit(int s_fd)
- {
- IO_WriteStdout("D_DeInit: DeInitializing sound driver\n");
- close(s_fd);
- }
-