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/* MikMod sound library
(c) 1998, 1999, 2000 Miodrag Vallat and others - see file AUTHORS for
complete list.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
/*==============================================================================
$Id$
Driver for output to AIX series audio device
==============================================================================*/
/*
Written by Lutz Vieweg <lkv@mania.robin.de>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mikmod_internals.h"
#ifdef DRV_AIX
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <stdlib.h>
#include <sys/audio.h>
#include <sys/acpa.h>
#define BUFFERSIZE 15
static int buffersize=1<<BUFFERSIZE;
static int fd=-1;
static SBYTE *audiobuffer=NULL;
static void AIX_CommandLine(const CHAR *cmdline)
{
char *buffer=MD_GetAtom("buffer",cmdline,0);
if(buffer) {
int buf=atoi(buffer);
if((buf<12)||(buf>19)) buf=BUFFERSIZE;
buffersize=1<<buf;
MikMod_free(buffer);
}
}
static BOOL AIX_IsThere(void)
{
int fd;
if((fd=open("/dev/acpa0/1",O_WRONLY))<0)
if((fd=open("/dev/paud0/1",O_WRONLY))<0)
if((fd=open("/dev/baud0/1",O_WRONLY))<0)
return 0;
close(fd);
return 1;
}
static int AIX_Init(void)
{
audio_init a_init;
audio_control a_control;
audio_change a_change;
track_info t_info;
if (!(md_mode&DMODE_16BITS)) {
_mm_errno=MMERR_16BIT_ONLY;
return 1;
}
if((fd=open("/dev/acpa0/1",O_WRONLY))<0)
if((fd=open("/dev/paud0/1",O_WRONLY))<0)
if((fd=open("/dev/baud0/1",O_WRONLY))<0) {
_mm_errno=MMERR_OPENING_AUDIO;
return 1;
}
t_info.master_volume=0x7fff;
t_info.dither_percent=0;
a_init.srate=md_mixfreq;
a_init.bits_per_sample=16;
a_init.channels=(md_mode&DMODE_STEREO)?2:1;
a_init.mode=PCM;
a_init.flags=FIXED|BIG_ENDIAN|TWOS_COMPLEMENT;
a_init.operation=PLAY;
a_change.balance=0x3fff0000;
a_change.balance_delay=0;
a_change.volume=(long)((float)1.0*(float)0x7FFFFFFF);
a_change.volume_delay=0;
a_change.monitor=AUDIO_IGNORE;
a_change.input=AUDIO_IGNORE;
a_change.output=OUTPUT_1;
a_change.dev_info=&t_info;
a_control.ioctl_request=AUDIO_CHANGE;
a_control.position=0;
a_control.request_info=&a_change;
if (ioctl(fd,AUDIO_INIT,&a_init)==-1) {
_mm_errno=MMERR_AIX_CONFIG_INIT;
return 1;
}
if (ioctl(fd,AUDIO_CONTROL,&a_control)==-1) {
_mm_errno=MMERR_AIX_CONFIG_CONTROL;
return 1;
}
a_control.ioctl_request=AUDIO_START;
a_control.request_info=NULL;
if (ioctl(fd,AUDIO_CONTROL,&a_control)==-1) {
_mm_errno=MMERR_AIX_CONFIG_START;
return 1;
}
if (!(audiobuffer=(SBYTE*)MikMod_malloc(buffersize))) return 1;
return VC_Init();
}
static void AIX_Exit(void)
{
VC_Exit();
if (fd>=0) {
close(fd);
fd=-1;
}
MikMod_free(audiobuffer);
audiobuffer=NULL;
}
static void AIX_Update(void)
{
write(fd,audiobuffer,VC_WriteBytes(audiobuffer,buffersize));
}
static void AIX_Pause(void)
{
write(fd,audiobuffer,VC_SilenceBytes(audiobuffer,buffersize));
}
MIKMODAPI MDRIVER drv_aix={
NULL,
"AIX Audio",
"AIX Audio driver v1.2",
0,255,
"AIX",
"buffer:r:12,19,15:Audio buffer log2 size\n",
AIX_CommandLine,
AIX_IsThere,
VC_SampleLoad,
VC_SampleUnload,
VC_SampleSpace,
VC_SampleLength,
AIX_Init,
AIX_Exit,
NULL,
VC_SetNumVoices,
VC_PlayStart,
VC_PlayStop,
AIX_Update,
AIX_Pause,
VC_VoiceSetVolume,
VC_VoiceGetVolume,
VC_VoiceSetFrequency,
VC_VoiceGetFrequency,
VC_VoiceSetPanning,
VC_VoiceGetPanning,
VC_VoicePlay,
VC_VoiceStop,
VC_VoiceStopped,
VC_VoiceGetPosition,
VC_VoiceRealVolume
};
#else
MISSING(drv_aix);
#endif
/* ex:set ts=4: */
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