freebsd-dev/sys/i386/isa/sound/midi.c
David Greenman 3c4dd3568f Added $Id$
1994-08-02 07:55:43 +00:00

206 lines
4.3 KiB
C

/*
* Copyright by UWM - comments to soft-eng@cs.uwm.edu
*
* 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.
*
* $Id$
*/
#define _MIDI_TABLE_C_
#include "sound_config.h"
#ifdef CONFIGURE_SOUNDCARD
#ifndef EXCLUDE_CHIP_MIDI
static int generic_midi_busy[MAX_MIDI_DEV];
long
CMIDI_init (long mem_start)
{
int i;
int n = num_midi_drivers;
/*
* int n = sizeof (midi_supported) / sizeof( struct generic_midi_info );
*/
for (i = 0; i < n; i++)
{
if (midi_supported[i].attach (mem_start))
{
printk ("MIDI: Successfully attached %s\n", midi_supported[i].name);
}
}
return (mem_start);
}
int
CMIDI_open (int dev, struct fileinfo *file)
{
int mode, err, retval;
dev = dev >> 4;
mode = file->mode & O_ACCMODE;
if (generic_midi_busy[dev])
return (RET_ERROR (EBUSY));
if (dev >= num_generic_midis)
{
printk (" MIDI device %d not installed.\n", dev);
return (ENXIO);
}
if (!generic_midi_devs[dev])
{
printk (" MIDI device %d not initialized\n", dev);
return (ENXIO);
}
/* If all good and healthy, go ahead and issue call! */
retval = generic_midi_devs[dev]->open (dev, mode);
/* If everything ok, set device as busy */
if (retval >= 0)
generic_midi_busy[dev] = 1;
return (retval);
}
int
CMIDI_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
{
int retval;
dev = dev >> 4;
if (dev >= num_generic_midis)
{
printk (" MIDI device %d not installed.\n", dev);
return (ENXIO);
}
/*
* Make double sure of healthiness -- doubt Need we check this again??
*
*/
if (!generic_midi_devs[dev])
{
printk (" MIDI device %d not initialized\n", dev);
return (ENXIO);
}
/* If all good and healthy, go ahead and issue call! */
retval = generic_midi_devs[dev]->write (dev, buf);
return (retval);
}
int
CMIDI_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count)
{
int retval;
dev = dev >> 4;
if (dev >= num_generic_midis)
{
printk (" MIDI device %d not installed.\n", dev);
return (ENXIO);
}
/*
* Make double sure of healthiness -- doubt Need we check this again??
*
*/
if (!generic_midi_devs[dev])
{
printk (" MIDI device %d not initialized\n", dev);
return (ENXIO);
}
/* If all good and healthy, go ahead and issue call! */
retval = generic_midi_devs[dev]->read (dev, buf);
return (retval);
}
int
CMIDI_close (int dev, struct fileinfo *file)
{
int retval;
dev = dev >> 4;
if (dev >= num_generic_midis)
{
printk (" MIDI device %d not installed.\n", dev);
return (ENXIO);
}
/*
* Make double sure of healthiness -- doubt Need we check this again??
*
*/
if (!generic_midi_devs[dev])
{
printk (" MIDI device %d not initialized\n", dev);
return (ENXIO);
}
/* If all good and healthy, go ahead and issue call! */
generic_midi_devs[dev]->close (dev);
generic_midi_busy[dev] = 0; /* Free the device */
return (0);
}
#endif
#endif