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- /* MikMod sound library
- (c) 1998 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- /*==============================================================================
-
- $Id: drv_aix.c,v 1.16 1998/12/07 06:01:37 miod Exp $
-
- Mikmod driver for output to AIX series audio device
-
- ==============================================================================*/
-
- /*
-
- Written by Lutz Vieweg <lkv@mania.robin.de>
-
- */
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #ifdef HAVE_FCNTL_H
- #include <fcntl.h>
- #endif
- #include <stdlib.h>
- #include <sys/audio.h>
-
- #include <mikmod_internals.h>
-
- struct _track_info
- {
- unsigned short master_volume;
- unsigned short dither_percent;
- unsigned short reserved[3];
- } t_info;
-
- static audio_init a_init;
- static audio_control a_control;
- static audio_change a_change;
-
- #define BUFFERSIZE 32768
-
- static int fd=-1;
- static SBYTE *audiobuffer=NULL;
-
- static BOOL AIX_IsThere(void)
- {
- return 1;
- }
-
- static BOOL AIX_Init(void)
- {
- float volume=(float)1.0;
- int flags;
-
- 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)(volume*(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 0
- if ((flags=fcntl(fd,F_GETFL,0))<0) {
- _mm_errno=MMERR_NON_BLOCK;
- return 1;
- }
- flags|=O_NDELAY;
- if (fcntl(fd,F_SETFL,flags)<0) {
- _mm_errno=MMERR_NON_BLOCK;
- return 1;
- }
- #endif
-
- 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;
- }
- if (audiobuffer) {
- free(audiobuffer);
- audiobuffer=NULL;
- }
- }
-
- static BOOL AIX_Reset(void)
- {
- AIX_Exit();
- return AIX_Init();
- }
-
- static void AIX_Update(void)
- {
- write(fd,audiobuffer,VC_WriteBytes(audiobuffer,BUFFERSIZE));
- }
-
- MDRIVER drv_aix={
- NULL,
- "AIX Audio",
- "AIX Audio driver v1.2",
- 0,255,
- AIX_IsThere,
- VC_SampleLoad,
- VC_SampleUnload,
- VC_SampleSpace,
- VC_SampleLength,
- AIX_Init,
- AIX_Exit,
- AIX_Reset,
- VC_SetNumVoices,
- VC_PlayStart,
- VC_PlayStop,
- AIX_Update,
- VC_VoiceSetVolume,
- VC_VoiceSetFrequency,
- VC_VoiceSetPanning,
- VC_VoicePlay,
- VC_VoiceStop,
- VC_VoiceStopped,
- VC_VoiceGetPosition,
- VC_VoiceRealVolume
- };
-