### patch number: 20
### area:	Aaxp server.
### severity:	med.
### comments: 	patch using command "(cd <audio_root> ; patch -p < thisfile)"
###             Removes dead code and adds support for line input as well 
###             as the mic input.

*** ./patchlevel.h	Wed Mar  3 16:02:55 1993
--- /crl/audio/./patchlevel.h	Fri Mar  5 11:30:15 1993
***************
*** 1 ****
! #define       PATCHLEVEL      19
--- 1 ----
! #define	PATCHLEVEL	20
*** ./AF/server/dda/axp/Imakefile	Tue Mar  9 11:35:16 1993
--- /crl/audio/./AF/server/dda/axp/Imakefile	Tue Apr 20 13:16:46 1993
***************
*** 3,17 ****
  CDEBUGFLAGS= -g
  SRCS =  dda.c event.c max_io.c \
  	codec_tables.c pscodec.c \
! 	crecord.c cplay.c write.c read.c 
  
  OBJS =  dda.o event.o max_io.o \
  	codec_tables.o pscodec.o \
! 	crecord.o cplay.o write.o read.o 
  
- 
     INCLUDES = -I../mi -I../../../include -I../../include -I$(INCLUDESRC) \
! 		-I/usr/sys/include/netisdn/h -I$(INCROOT) 
  
     LINTLIBS = ../../dix/llib-ldix.ln ../../os/4.2bsd/llib-los.ln \
  	     ../mi/llib-lmi.ln
--- 3,18 ----
  CDEBUGFLAGS= -g
  SRCS =  dda.c event.c max_io.c \
  	codec_tables.c pscodec.c \
! 	crecord.c cplay.c write.c read.c \
! 	axp_ioctl.c
  
  OBJS =  dda.o event.o max_io.o \
  	codec_tables.o pscodec.o \
! 	crecord.o cplay.o write.o read.o \
! 	axp_ioctl.o
  
     INCLUDES = -I../mi -I../../../include -I../../include -I$(INCLUDESRC) \
! 		-I$(INCROOT) -I/usr/sys/include
  
     LINTLIBS = ../../dix/llib-ldix.ln ../../os/4.2bsd/llib-los.ln \
  	     ../mi/llib-lmi.ln
*** ./AF/server/dda/axp/write.c	Tue Mar  9 11:35:16 1993
--- /crl/audio/./AF/server/dda/axp/write.c	Tue Apr 20 13:16:26 1993
***************
*** 38,44 ****
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char write_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/write.c,v 1.7 1993/03/09 16:12:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  
--- 38,44 ----
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char write_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/write.c,v 1.9 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  
***************
*** 52,58 ****
  #include <sys/types.h>
  #include <sys/ioctl.h>
  #include <sys/signal.h>
! #include <codecioc.h>
  #include <stropts.h>
  #include <stdio.h>
  #endif __alpha
--- 52,58 ----
  #include <sys/types.h>
  #include <sys/ioctl.h>
  #include <sys/signal.h>
! #include <netisdn/h/codecioc.h>
  #include <stropts.h>
  #include <stdio.h>
  #endif __alpha
***************
*** 233,239 ****
  	if(1 /* scanit(source, nsamples) */) {
  	result = write(axpfd, source, nsamples);	
  	if(result != nsamples)
! 		printf("short write %d %d\n", result, nsamples);
  	memset(source, SILENCE, nsamples);
  	twritten += nsamples;
  	} 
--- 233,239 ----
  	if(1 /* scanit(source, nsamples) */) {
  	result = write(axpfd, source, nsamples);	
  	if(result != nsamples)
! 		ErrorF("short write %d %d\n", result, nsamples);
  	memset(source, SILENCE, nsamples);
  	twritten += nsamples;
  	} 
***************
*** 252,258 ****
  	if(1 /* scanit(source, nsamples) */) {
  	result = write(sunfd, source, nsamples);	
  	if(result != nsamples)
! 		printf("short write %d %d\n", result, nsamples);
  	memset(source, SILENCE, nsamples);
  	twritten += nsamples;
  	last_stime = start_time;
--- 252,258 ----
  	if(1 /* scanit(source, nsamples) */) {
  	result = write(sunfd, source, nsamples);	
  	if(result != nsamples)
! 		ErrorF("short write %d %d\n", result, nsamples);
  	memset(source, SILENCE, nsamples);
  	twritten += nsamples;
  	last_stime = start_time;
*** ./AF/server/dda/axp/cplay.c	Sun Feb  7 19:11:33 1993
--- /crl/audio/./AF/server/dda/axp/cplay.c	Tue Apr 20 13:16:22 1993
***************
*** 39,45 ****
   */
  
  #if !defined(lint) && !defined(SABER)
! static char cplay_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/cplay.c,v 1.2 1993/02/08 00:11:33 stewart Exp $";
  #endif /* !lint && !SABER */
  
  #include <include/audio.h>
--- 39,45 ----
   */
  
  #if !defined(lint) && !defined(SABER)
! static char cplay_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/cplay.c,v 1.3 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  #include <include/audio.h>
***************
*** 47,53 ****
  #include <server/include/acstruct.h>
  #include <server/include/audiodev.h>
  #include <server/include/task.h>
! #include "bba.h"
  #include "ringbuffers.h"
  #include "physdevice.h"
  #include "max_io.h"
--- 47,53 ----
  #include <server/include/acstruct.h>
  #include <server/include/audiodev.h>
  #include <server/include/task.h>
! #include <netisdn/driver/bba/bba.h>
  #include "ringbuffers.h"
  #include "physdevice.h"
  #include "max_io.h"
***************
*** 55,61 ****
  #include "pscodec.h"
  #include "devtime.h"
  
! #define	EPSILON	DMASIZE
  
  
  /* This procedure is invoked by a protocol dispatching routine
--- 55,61 ----
  #include "pscodec.h"
  #include "devtime.h"
  
! #define	EPSILON	BBA_DMASIZE
  
  
  /* This procedure is invoked by a protocol dispatching routine
*** ./AF/server/dda/axp/read.c	Tue Mar  9 11:35:16 1993
--- /crl/audio/./AF/server/dda/axp/read.c	Tue Apr 20 13:16:25 1993
***************
*** 38,44 ****
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char read_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/read.c,v 1.4 1993/03/09 16:12:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  /* Revision History
--- 38,44 ----
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char read_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/read.c,v 1.5 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  /* Revision History
***************
*** 51,57 ****
  #include <sys/types.h>
  #include <sys/ioctl.h>
  #include <sys/signal.h>
! #include <codecioc.h>
  #include <stropts.h>
  #include <stdio.h>
  #include <errno.h>
--- 51,57 ----
  #include <sys/types.h>
  #include <sys/ioctl.h>
  #include <sys/signal.h>
! #include <netisdn/h/codecioc.h>
  #include <stropts.h>
  #include <stdio.h>
  #include <errno.h>
*** ./AF/server/dda/axp/devtime.h	Sun Feb  7 19:12:37 1993
--- /crl/audio/./AF/server/dda/axp/devtime.h	Tue Apr 20 13:16:01 1993
***************
*** 50,56 ****
  					(current)-(time) )
  
  /* Given a codec audio device, read the time register on the hardware. */
! #define GET_TIME(aDev)	bba_get_time( ((maxPhysDevice *)((aDev)->devPtr))->bba)
  
  /* Give a audio device, update current time in the audio device. */
  #define UPDATE_TIME(aDev)	\
--- 50,56 ----
  					(current)-(time) )
  
  /* Given a codec audio device, read the time register on the hardware. */
! #define GET_TIME(aDev)	bba_get_time()
  
  /* Give a audio device, update current time in the audio device. */
  #define UPDATE_TIME(aDev)	\
*** ./AF/server/dda/axp/event.c	Sun Feb  7 19:12:44 1993
--- /crl/audio/./AF/server/dda/axp/event.c	Tue Apr 20 13:16:23 1993
***************
*** 39,45 ****
   */
  
  #if !defined(lint) && !defined(SABER)
! static char event_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/event.c,v 1.2 1993/02/08 00:12:44 stewart Exp $";
  #endif /* !lint && !SABER */
  
  #include <stdio.h>
--- 39,45 ----
   */
  
  #if !defined(lint) && !defined(SABER)
! static char event_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/event.c,v 1.3 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  #include <stdio.h>
***************
*** 49,55 ****
  #include <audioproto.h>
  #include <audio.h>
  #include "dda.h"
! #include "bba.h"
  #include "max_io.h"
  #include "physdevice.h"
  #include "event.h"
--- 49,55 ----
  #include <audioproto.h>
  #include <audio.h>
  #include "dda.h"
! #include <netisdn/driver/bba/bba.h>
  #include "max_io.h"
  #include "physdevice.h"
  #include "event.h"
***************
*** 59,122 ****
  void
  ProcessInputEvents()
  {
-     int i;
-     struct interrupt_event event; 
-     aEvent cEvent;
-     int device;
-     maxPhysDevice *pDev;
-     AudioDevicePtr    aDev;
-     ATime etime;
-     ATime ctime;
- 
-     pDev = &physDevices[0];
-     aDev = physmap[0].primDev;
- 
-     /* Check event queue. */
-     if(GetEvent(pDev->bba, &event) == 0) return;
- 
-     /* Compute the audio device format timestamp for this event. */
-     ctime = (*(aDev->GetTime))(aDev);	
- 
-     switch(event.type){
-     case UNKNOWN:
-     default:
- 	    ErrorF("Unexpected event received in ProcessInputEvents %d\n",
- 		    event.type);
- 	    break;
-     }
- }
- 
- 
- /*
-  * returns an event, principally to hide the details of the queue.
-  * May craft a server internal event. 
-  */
- int GetEvent(info, event)
- struct bba_info *info;
-  struct interrupt_event *event;
- {
- 	struct interrupt_event *e;
- 	int i;
- 	if (info->head == info->tail) return 0;
- 	i = info->head;
- 	e = (struct interrupt_event *)((int)(info->us_start) 
- 			+ info->event_size * i);
- 	*event = *e;
- 	if (i >= info->event_list_size - 1) i = info->head = 0;
- 	else			 i = ++info->head;
- 	return 1;
  }
- /*
-  * flushes event queue
-  */
- int FlushEvent(info)
- struct bba_info *info;
- {
- 	struct interrupt_event e;
  
- 	int i=0;
- 	while(GetEvent(info, &e) != 0)
- 		++i;
- 	return i;
- }
  
--- 59,64 ----
*** ./AF/server/dda/axp/event.h	Sun Feb  7 19:12:52 1993
--- /crl/audio/./AF/server/dda/axp/event.h	Tue Apr 20 13:16:02 1993
***************
*** 42,51 ****
  #ifndef EVENT_H 
  #define EVENT_H
  
- /*
- #include "bba.h"
- */
- 
  extern void lofiInputInit();
  int GetEvent();
  int FlushEvent();
--- 42,47 ----
*** ./AF/server/dda/axp/max_io.c	Tue Mar  9 11:35:16 1993
--- /crl/audio/./AF/server/dda/axp/max_io.c	Tue Apr 20 13:16:23 1993
***************
*** 38,44 ****
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char lofiio_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/max_io.c,v 1.4 1993/03/09 16:12:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  /* Revision History
--- 38,44 ----
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char lofiio_c_rcsid[]="$Header: /crl/audio/AF/server/dda/axp/RCS/max_io.c,v 1.5 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  /* Revision History
***************
*** 62,68 ****
  #include <server/include/input.h>
  #include <stropts.h>
  #ifdef __alpha
! #include <codecioc.h>
  #endif __alpha
  #ifdef SUN
  #include <multimedia/libaudio.h>
--- 62,68 ----
  #include <server/include/input.h>
  #include <stropts.h>
  #ifdef __alpha
! #include <netisdn/h/codecioc.h>
  #endif __alpha
  #ifdef SUN
  #include <multimedia/libaudio.h>
***************
*** 70,76 ****
  #endif SUN
  
  #include "physdevice.h"
! #include "bba.h"
  #include "ringbuffers.h"
  #include "max_io.h"
  #include "codec.h"
--- 70,76 ----
  #endif SUN
  
  #include "physdevice.h"
! #include <netisdn/driver/bba/bba.h>
  #include "ringbuffers.h"
  #include "max_io.h"
  #include "codec.h"
***************
*** 88,94 ****
   * puts control bits in known state, and finally
   * loads (not enables) the dsp uKernel.
   */
! struct bba_info my_bba_info;
  #ifdef SUN
  #include <sys/ioctl.h>
  #include <sys/filio.h>
--- 88,94 ----
   * puts control bits in known state, and finally
   * loads (not enables) the dsp uKernel.
   */
! 
  #ifdef SUN
  #include <sys/ioctl.h>
  #include <sys/filio.h>
***************
*** 124,136 ****
  
  	pDev->state = STATE_INIT;
  #ifndef SUN
- #ifdef mips
- 	if (ioctl(pDev->fd, QIOBBAINFO, &pDev->bba) < 0) {
- 	    ErrorF("dda QIOBBAINFO failed, errno message %d\n", 
- 		errno);
- 	    exit(1);
- 	}
- #endif mips
  #ifdef __alpha
  	if ((pDev->fd = open(devName, O_RDWR | O_NDELAY, 0)) < 0) {
  	    ErrorF("dda can't open %s, errno message \" %d \"\n", devName, 
--- 124,129 ----
***************
*** 137,144 ****
  		errno);
  	    exit(1);
  	}
- 	bzero(&my_bba_info, sizeof(struct bba_info));
- 	pDev->bba = &my_bba_info;
  	axpfd = pDev->fd;
  	data [0] = 1; /* Enable */
          if (axpIoctl (pDev->fd, ISDNIOC_MIC_ENABLE, data, sizeof (int)) < 0) {
--- 130,135 ----
***************
*** 163,170 ****
  		errno);
  	    exit(1);
  	}
- 	bzero(&my_bba_info, sizeof(struct bba_info));
- 	pDev->bba = &my_bba_info;
  	sunfd = pDev->fd;
  	if ((sunfd1 = open(devName, O_RDONLY | O_NDELAY, 0)) < 0) {
  	    ErrorF("dda can't open %s, errno message \" %d \"\n", devName, 
--- 154,159 ----
***************
*** 187,203 ****
  	    ErrorF("dda can't close device. errno message \" %d \"\n",
  		errno);
  	pDev->state = STATE_CLOSED;
- }
- 
- #include <sys/time.h>
- void msleep(info, msecs)
- struct bba_info *info;
- int msecs;
- {
-   struct timeval timeout;
- 
-   timeout.tv_sec = msecs / 1000;
-   timeout.tv_usec = msecs * 1000;
-   select(0, NULL, NULL, NULL, &timeout);
  }
  
--- 176,180 ----
*** ./AF/server/dda/axp/max_io.h	Sun Feb  7 19:13:10 1993
--- /crl/audio/./AF/server/dda/axp/max_io.h	Tue Apr 20 13:16:03 1993
***************
*** 42,51 ****
  #ifndef	MAXIO_H
  #define	MAXIO_H
  
! #include "bba.h"
  #include "physdevice.h"
  
- void	msleep();
  void	initMAX();
  void	closeMAX();
  #endif	/* MAXIO_H */
--- 42,50 ----
  #ifndef	MAXIO_H
  #define	MAXIO_H
  
! #include <netisdn/driver/bba/bba.h>
  #include "physdevice.h"
  
  void	initMAX();
  void	closeMAX();
  #endif	/* MAXIO_H */
*** ./AF/server/dda/axp/pscodec.c	Mon Mar 15 16:40:42 1993
--- /crl/audio/./AF/server/dda/axp/pscodec.c	Tue Apr 20 13:16:24 1993
***************
*** 38,44 ****
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char pscodec_c_rcsid[] = "$Header: /crl/audio/AF/server/dda/axp/RCS/pscodec.c,v 1.10 1993/03/09 16:31:12 tml Exp tml $";
  #endif /* !lint && !SABER */
  
  /* Revision History
--- 38,44 ----
   * SOFTWARE.
   */
  #if !defined(lint) && !defined(SABER)
! static char pscodec_c_rcsid[] = "$Header: /crl/audio/AF/server/dda/axp/RCS/pscodec.c,v 1.11 1993/04/20 17:15:14 tml Exp $";
  #endif /* !lint && !SABER */
  
  /* Revision History
***************
*** 71,77 ****
  #include <audio/AFUtils.h>
  #include "uatables.h"
  #ifdef __alpha
! #include <codecioc.h>
  #endif __alpha
  
  #ifdef SUN
--- 71,77 ----
  #include <audio/AFUtils.h>
  #include "uatables.h"
  #ifdef __alpha
! #include <netisdn/h/codecioc.h>
  #endif __alpha
  
  #ifdef SUN
***************
*** 113,130 ****
  }
  
  
! ATime bba_get_time (info)
! 	struct bba_info *info;		/* which bba */
  {
  	return((ATime) getctime());
  }
  
  typedef enum {DispositionUnknown, Before, Now, After, Early, Past}
  	TickDisposition;
  
! 
! TickDisposition time_status(info, time)
! struct bba_info *info;
  ATime time;
  {
  	ATime current_time;	/* offset in words */
--- 113,128 ----
  }
  
  
! ATime bba_get_time ()
  {
  	return((ATime) getctime());
  }
  
+ #if	0
  typedef enum {DispositionUnknown, Before, Now, After, Early, Past}
  	TickDisposition;
  
! TickDisposition time_status(time)
  ATime time;
  {
  	ATime current_time;	/* offset in words */
***************
*** 131,137 ****
  	ATime end_of_wrap_time;
  
  	current_time = (ATime) getctime();
! 	end_of_wrap_time = current_time + RING_SIZE - DMASIZE;
  	if (time >= (end_of_wrap_time + WDEADSPACE ))
  		return ( After );
  	else if (time < current_time)
--- 129,135 ----
  	ATime end_of_wrap_time;
  
  	current_time = (ATime) getctime();
! 	end_of_wrap_time = current_time + RING_SIZE - BBA_DMASIZE;
  	if (time >= (end_of_wrap_time + WDEADSPACE ))
  		return ( After );
  	else if (time < current_time)
***************
*** 139,145 ****
  	else
  		return (Now);
  }
! 
  
  static ATime
  codecGetTime(aDev)
--- 137,143 ----
  	else
  		return (Now);
  }
! #endif
  
  static ATime
  codecGetTime(aDev)
***************
*** 315,322 ****
  	if (!codecInitCommon(aDev))
  		return FALSE;
  
! 	aDev->numberOfInputs = 1;		/* Phone */
! 	aDev->numberOfOutputs = 2;		/* Phone and monitor. */
  	aDev->inputsFromPhone = 0x0000;		/* Input 0. */
  	aDev->outputsToPhone = 0x0000;		/* Input 0. */
  
--- 313,320 ----
  	if (!codecInitCommon(aDev))
  		return FALSE;
  
! 	aDev->numberOfInputs = 2;
! 	aDev->numberOfOutputs = 2;
  	aDev->inputsFromPhone = 0x0000;		/* Input 0. */
  	aDev->outputsToPhone = 0x0000;		/* Input 0. */
  
***************
*** 502,510 ****
--- 500,516 ----
  	maxPhysDevice *pDev=(maxPhysDevice *)aDev->devPtr;
  	CodecPrivate	*cPtr= (CodecPrivate *) aDev->privPtr;
  
+ #if	0
  	/* Only 1 input - sorry */
  	if(omaskp) *omaskp = 1;
  	if(amaskp) *amaskp = 1;
+ #else
+ 	*omaskp = axp_get_input(pDev->fd)
+ 		& TOMASK(aDev->numberOfInputs);
+ 	axp_set_input(pDev->fd, onoff, nmask&INMASK);
+ 	*amaskp = axp_get_input(pDev->fd)
+ 		& TOMASK(aDev->numberOfInputs);
+ #endif
  }
  
  #ifdef	__alpha
*** ./AF/server/dda/axp/physdevice.h	Sun Feb  7 19:13:34 1993
--- /crl/audio/./AF/server/dda/axp/physdevice.h	Tue Apr 20 13:16:04 1993
***************
*** 37,43 ****
   * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
   * SOFTWARE.
   */
! /* $Header: /crl/audio/AF/server/dda/axp/RCS/physdevice.h,v 1.2 1993/02/08 00:13:34 stewart Exp $ */
  
  #ifndef PHYSDEVICE_H
  #define PHYSDEVICE_H
--- 37,43 ----
   * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
   * SOFTWARE.
   */
! /* $Header: /crl/audio/AF/server/dda/axp/RCS/physdevice.h,v 1.3 1993/04/20 17:15:14 tml Exp $ */
  
  #ifndef PHYSDEVICE_H
  #define PHYSDEVICE_H
***************
*** 76,82 ****
  } CodecPrivate;
  
  typedef struct {
-     struct bba_info 	*bba;
      int			fd;	
  
      /* ADevice state. */
--- 76,81 ----
*** ./AF/server/dda/axp/pscodec.h	Sun Feb  7 19:13:43 1993
--- /crl/audio/./AF/server/dda/axp/pscodec.h	Tue Apr 20 13:16:04 1993
***************
*** 55,61 ****
  #define SAMPLEFREQ	8000		/* 8000 samples/second		    */
  #define SILENCE 	0x0ff		/* mu-255 silence.		    */
  #define	MSHWALERT	100		/* Interval of hw->host alert. 	*/
! #define	LENHWBUF	8*DMASIZE	/* Number of words in HW Buffer.    */
  #define	TIMEHWBUF	(LENHWBUF * 1)	/* Number of samples.		    */
  
  #define TICKSTOMS(tick)	((tick)>>3)
--- 55,61 ----
  #define SAMPLEFREQ	8000		/* 8000 samples/second		    */
  #define SILENCE 	0x0ff		/* mu-255 silence.		    */
  #define	MSHWALERT	100		/* Interval of hw->host alert. 	*/
! #define	LENHWBUF	8*BBA_DMASIZE	/* Number of words in HW Buffer.    */
  #define	TIMEHWBUF	(LENHWBUF * 1)	/* Number of samples.		    */
  
  #define TICKSTOMS(tick)	((tick)>>3)
*** ./AF/server/dda/axp/axp_ioctl.c	Tue Apr 20 13:26:23 1993
--- /crl/audio/./AF/server/dda/axp/axp_ioctl.c	Tue Apr 20 13:16:16 1993
***************
*** 0 ****
--- 1,176 ----
+ /*              Copyright 1990, 1991, 1992, 1993 Digital Equipment Corporation
+  *                        All Rights Reserved
+  *
+  * Permission to use, copy, and modify this software and its documentation is
+  * hereby granted only under the following terms and conditions.  Both the
+  * above copyright notice and this permission notice must appear in all copies
+  * of the software, derivative works or modified versions, and any portions
+  * thereof, and both notices must appear in supporting documentation.
+  *
+  * Users of this software agree to the terms and conditions set forth herein,
+  * and hereby grant back to Digital a non-exclusive, unrestricted, royalty-free
+  * right and license under any changes, enhancements or extensions made to the
+  * core functions of the software, including but not limited to those affording
+  * compatibility with other hardware or software environments, but excluding
+  * applications which incorporate this software.  Users further agree to use
+  * their best efforts to return to Digital any such changes, enhancements or
+  * extensions that they make and inform Digital of noteworthy uses of this
+  * software.  Correspondence should be provided to Digital at:
+  *
+  *                      Director of Licensing
+  *                      Cambridge Research Laboratory
+  *                      Digital Equipment Corporation
+  *                      One Kendall Square, Bld. 700
+  *                      Cambridge, MA 02139  
+  *
+  * This software may be distributed (but not offered for sale or transferred 
+  * for compensation except on systems manufactured by Digital Equipment 
+  * Corporation) to third parties, provided such third parties agree to abide 
+  * by the terms and conditions of this notice.  
+  *
+  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+  * MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+  * SOFTWARE.
+  */
+ #if !defined(lint) && !defined(SABER)
+ static char pscodec_c_rcsid[] = "$Header: /crl/audio/AF/server/dda/axp/RCS/axp_ioctl.c,v 1.1 1993/04/20 17:15:14 tml Exp $";
+ #endif /* !lint && !SABER */
+ 
+ #include <stdio.h>
+ #include <stropts.h>
+ #include <server/include/dia.h>
+ #include <server/include/misc.h>
+ #include <server/include/audiodev.h>
+ #include <server/include/ac.h>
+ #include <server/include/acstruct.h>
+ #include <server/include/task.h>
+ #include "ringbuffers.h"
+ #include "pscodec.h"
+ #include "max_io.h"
+ #include "physdevice.h"
+ #include <audio/AFUtils.h>
+ #include "uatables.h"
+ #ifdef __alpha
+ #include <netisdn/h/codecioc.h>
+ #include <netisdn/driver/bba/bba_reg.h>
+ #endif __alpha
+ 
+ axp_Ioctl (fd, cmd, data, len)
+ 	int fd, cmd, len;
+ 	char *data;
+ {
+ 	struct strioctl ioc;
+ 
+ 	ioc.ic_cmd = cmd;
+ 	ioc.ic_timout = 10;
+ 	ioc.ic_len = len;
+ 	ioc.ic_dp = data;
+ 
+ 	return ioctl (fd, I_STR, &ioc);
+ }
+ 
+ codec_read(int fd, int creg, unsigned char *data, int num)
+ {
+     int i;
+     struct {
+ 	struct bba_indirect ds;
+ 	unsigned char data[10];
+     } is;
+ 
+     is.ds.bi_regno = creg;
+     is.ds.bi_len = num;
+     is.ds.bi_direction = BBA_CODEC_READ;
+     if (axp_Ioctl (fd, BBAIOC_CODEC_INDIRECT, &is, sizeof(is)) < 0)
+     {
+ 	perror("CODEC_INDIRECT: codec_read");
+ 	exit(1);
+     }
+     for (i=0;i<num;i++)
+ 	*data++ = is.data[i];
+ }
+ 
+ codec_write(int fd, int creg, unsigned char *data, int num)
+ {
+     int i;
+     struct {
+ 	struct bba_indirect ds;
+ 	unsigned char data[10];
+     } is;
+ 
+     for (i=0;i<num;i++)
+ 	is.data[i] = *data++;
+ 
+     is.ds.bi_regno = creg;
+     is.ds.bi_len = num;
+     is.ds.bi_direction = BBA_CODEC_WRITE;
+ 	
+     if (axp_Ioctl (fd, BBAIOC_CODEC_INDIRECT, &is, sizeof(is)) < 0)
+     {
+ 	perror("CODEC_INDIRECT: codec_write");
+ 	exit(1);
+     }
+ }
+ 
+ axp_get_input(int fd)
+ {
+   unsigned char d0,mute;
+   int mask = 0;
+   unsigned char data[2];
+ 
+   codec_read(fd, MAP_MMR3, data, 1);
+   mute = data[0];
+   if((mute&MAP_MMR3_BITS_MUTE) != 0) return 0;
+ 
+   codec_read(fd, MAP_MMR2, data, 1);
+   d0 = data[0];
+   mask = ((d0&MAP_MMR2_BITS_AINB)==0 ? 1<<0 : 1<<1);
+   return mask;
+ }
+ 
+ axp_set_input(int fd, int enable, int mask)
+ {
+   unsigned char d0, mute;
+   int dismask;
+   unsigned char data[2];
+ 
+   if (mask == 0) return;
+ 
+   codec_read(fd, MAP_MMR2, data, 1); 
+   d0 = data[0];
+   codec_read(fd, MAP_MMR3, data, 1);
+   mute = data[0];
+ 
+   if(((mute&MAP_MMR3_BITS_MUTE)!=0) && (!enable)) return; /* do nothing */
+ 
+   if(((mute&MAP_MMR3_BITS_MUTE)!=0) && (enable)){
+ 	/* If currently muted and being enabled, turn off mute. */
+ 	mute &= ~(MAP_MMR3_BITS_MUTE);
+         data[0] = mute;
+         codec_write(fd, MAP_MMR3, data, 1);
+   }
+ 
+   if (!enable){
+ 	/* add in input already disabled. */
+ 	dismask = mask | ((d0 & MAP_MMR2_BITS_AINB)==0 ? 0x2 : 0x1);
+ 	if (dismask == 0x3){
+ 		 /* Mute */
+ 		mute |= MAP_MMR3_BITS_MUTE;
+                 data[0] = mute;
+         	codec_write(fd, MAP_MMR3, data, 1);
+ 		return;
+ 	}
+   }
+ 
+   /* Enable  one of the inputs. */
+   d0 &= ~(MAP_MMR2_BITS_AINB);
+   if (enable) d0 |= ((mask&0x1)!=0 ? 0 : MAP_MMR2_BITS_AINB);
+   else d0 |= ((mask&0x1)!=0 ? MAP_MMR2_BITS_AINB : 0);
+   data[0] = d0;
+   codec_write(fd, MAP_MMR2, data, 1);
+ 
+ }