/* 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: drv_aix.c,v 1.1.1.1 2004/06/01 12:16:17 raph Exp $

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(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;

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*)_mm_malloc(buffersize))) return 1;

return VC_Init();

}

static void AIX_Exit(void)

{

VC_Exit();

if (fd>=0) {

close(fd);

fd=-1;

}

_mm_free(audiobuffer);

}

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",

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: */