#define DIGI_SOUND
#define MIDI_SOUND

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <mmsystem.h>
#include <dsound.h>

#include <math.h>

#include "error.h"
#include "mono.h"
#include "fix.h"
#include "vecmat.h"
#include "gr.h" // needed for piggy.h
#include "piggy.h"
#include "digi.h"
#include "sounds.h"
#include "wall.h"
#include "newdemo.h"
#include "kconfig.h"
#include "hmpfile.h"
hmp_file *hmp = NULL;

#ifdef DIGI_SOUND
#define MAX_SOUND_SLOTS 32
#define MIN_VOLUME 10


#define SOF_USED			1		// Set if this sample is used
#define SOF_PLAYING			2		// Set if this sample is playing on a channel
#define SOF_LINK_TO_OBJ		4		// Sound is linked to a moving object. If object dies, then finishes play and quits.
#define SOF_LINK_TO_POS		8		// Sound is linked to segment, pos
#define SOF_PLAY_FOREVER	16		// Play forever (or until level is stopped), otherwise plays once

typedef struct sound_object {
	short		signature;		// A unique signature to this sound
	ubyte		flags;			// Used to tell if this slot is used and/or currently playing, and how long.
	fix		max_volume;		// Max volume that this sound is playing at
	fix		max_distance;	        // The max distance that this sound can be heard at...
	int		volume;			// Volume that this sound is playing at
	int 		pan;			// Pan value that this sound is playing at
	int		handle; 		// What handle this sound is playing on.  Valid only if SOF_PLAYING is set.
	short		soundnum;		// The sound number that is playing
	union {	
		struct {
			short		segnum; 			// Used if SOF_LINK_TO_POS field is used
			short		sidenum;
			vms_vector	position;
		}pos;
		struct {
			short		 objnum;			 // Used if SOF_LINK_TO_OBJ field is used
			short		 objsignature;
		}obj;
	}link;
} sound_object;
#define lp_segnum link.pos.segnum
#define lp_sidenum link.pos.sidenum
#define lp_position link.pos.position

#define lo_objnum link.obj.objnum
#define lo_objsignature link.obj.objsignature

#define MAX_SOUND_OBJECTS 16
sound_object SoundObjects[MAX_SOUND_OBJECTS];
short next_signature=0;


//added/changed on 980905 by adb to make sfx volume work
#define SOUND_MAX_VOLUME F1_0
int digi_volume = SOUND_MAX_VOLUME;
//end edit by adb

LPDIRECTSOUND lpds;
WAVEFORMATEX waveformat;
DSBUFFERDESC dsbd;

extern HWND g_hWnd;

struct sound_slot {
 int soundno;
 int playing;   // Is there a sample playing on this channel?
 int looped;    // Play this sample looped?
 fix pan;       // 0 = far left, 1 = far right
 fix volume;    // 0 = nothing, 1 = fully on
 //changed on 980905 by adb from char * to unsigned char * 
 unsigned char *samples;
 //end changes by adb
 unsigned int length; // Length of the sample
 unsigned int position; // Position we are at at the moment.
 LPDIRECTSOUNDBUFFER lpsb;
} SoundSlots[MAX_SOUND_SLOTS];


int digi_lomem = 0;
int midi_volume = 255;
int digi_midi_song_playing = 0;
int digi_last_midi_song = 0;
int digi_last_midi_song_loop = 0;

static int digi_initialised = 0;
static int digi_atexit_initialised=0;

static int digi_sounds_initialized = 0;

//added on 980905 by adb to add rotating/volume based sound kill system
static int digi_max_channels = 16;
static int next_handle = 0;
int SampleHandles[32];
void reset_sounds_on_channel(int channel);
//end edit by adb

void digi_reset_digi_sounds(void);

void digi_reset() { }

void digi_close(void) {
  if(digi_initialised)
   IDirectSound_Release(lpds);
 digi_initialised = 0;
}

/* Initialise audio devices. */
int digi_init()
{
 HRESULT hr;
 
 if (!digi_initialised && g_hWnd){

	 memset(&waveformat, 0, sizeof(waveformat));
	 waveformat.wFormatTag=WAVE_FORMAT_PCM;
	 waveformat.wBitsPerSample=8;
	 waveformat.nChannels = 1;
	 waveformat.nSamplesPerSec = digi_sample_rate; //11025;
	 waveformat.nBlockAlign =
	 waveformat.nChannels * (waveformat.wBitsPerSample/8);
	 waveformat.nAvgBytesPerSec =
	 waveformat.nSamplesPerSec * waveformat.nBlockAlign;	

	  if ((hr = DirectSoundCreate(NULL, &lpds, NULL)) != DS_OK)
	   return -1;

	  if ((hr = IDirectSound_SetCooperativeLevel(lpds, g_hWnd, DSSCL_PRIORITY)) //hWndMain
	       != DS_OK)
	   {
	    IDirectSound_Release(lpds);
	    return -1;
	   }
	
	 memset(&dsbd, 0, sizeof(dsbd));
	 dsbd.dwSize = sizeof(dsbd);
	 dsbd.dwFlags = DSBCAPS_CTRLDEFAULT | DSBCAPS_GETCURRENTPOSITION2;
	 dsbd.dwBufferBytes = 8192;
	 dsbd.dwReserved=0;
	 dsbd.lpwfxFormat = &waveformat;

	 digi_initialised = 1;
}

	if (!digi_atexit_initialised){
		atexit(digi_close);
		digi_atexit_initialised=1;
	}
 return 0;
}

/* Find the sound which actually equates to a sound number */
int digi_xlat_sound(int soundno)
{
	if ( soundno < 0 ) return -1;

	if ( digi_lomem )	{
		soundno = AltSounds[soundno];
		if ( soundno == 255 ) return -1;
	}
	return Sounds[soundno];
}

static int get_free_slot()
{
 int i;
 unsigned int s;
 for (i=0; i<MAX_SOUND_SLOTS; i++)
 {
  if (!SoundSlots[i].playing) return i;
  if (SoundSlots[i].lpsb) {
   IDirectSoundBuffer_GetStatus(SoundSlots[i].lpsb, &s);
   if (!(s & DSBSTATUS_PLAYING)) IDirectSoundBuffer_Release(SoundSlots[i].lpsb);
   SoundSlots[i].playing = 0;
   SoundSlots[i].lpsb = NULL;
   return i;
  }
 }
 return -1;
}

int D1vol2DSvol(fix d1v){
//multiplying by 1.5 doesn't help.  DirectSound uses dB for volume, rather than a linear scale like d1 wants.
//I had to pull out a math book, but here is the code to fix it :)  -Matt Mueller
//log x=y  <==>  x=a^y  
//   a
	 if (d1v<=0)
		 return -10000;
	 else
//		 return log2(f2fl(d1v))*1000;//no log2? hm.
		 return log(f2fl(d1v))/log(2)*1000.0;
}

int digi_start_sound(int soundnum, fix volume, fix pan)
{
 int ntries;
 int slot;
 HRESULT hr;

 if (!digi_initialised) return -1;

 //added on 980905 by adb from original source to add sound kill system
 // play at most digi_max_channel samples, if possible kill sample with low volume
 ntries = 0;

TryNextChannel:
 if ( (SampleHandles[next_handle] >= 0) && (SoundSlots[SampleHandles[next_handle]].playing)  )
 {
  if ( (SoundSlots[SampleHandles[next_handle]].volume > digi_volume) && (ntries<digi_max_channels) )
  {
   //mprintf(( 0, "Not stopping loud sound %d.\n", next_handle ));
   next_handle++;
   if ( next_handle >= digi_max_channels )
    next_handle = 0;
   ntries++;
   goto TryNextChannel;
  }
  //mprintf(( 0, "[SS:%d]", next_handle ));
  SoundSlots[SampleHandles[next_handle]].playing = 0;
  SampleHandles[next_handle] = -1;
 }
 //end edit by adb

 slot = get_free_slot();
 if (slot<0) return -1;

 SoundSlots[slot].soundno = soundnum;
 SoundSlots[slot].samples = GameSounds[soundnum].data;
 SoundSlots[slot].length = GameSounds[soundnum].length;
 SoundSlots[slot].volume = fixmul(digi_volume, volume);
 SoundSlots[slot].pan = pan;
 SoundSlots[slot].position = 0;
 SoundSlots[slot].looped = 0;
 SoundSlots[slot].playing = 1;

 memset(&waveformat, 0, sizeof(waveformat));
 waveformat.wFormatTag=WAVE_FORMAT_PCM;
 waveformat.wBitsPerSample=8;
 waveformat.nChannels = 1;
 waveformat.nSamplesPerSec = digi_sample_rate; //11025;
 waveformat.nBlockAlign =
   waveformat.nChannels * (waveformat.wBitsPerSample/8);
 waveformat.nAvgBytesPerSec =
   waveformat.nSamplesPerSec * waveformat.nBlockAlign;

 memset(&dsbd, 0, sizeof(dsbd));
 dsbd.dwSize = sizeof(dsbd);
 dsbd.dwFlags = DSBCAPS_CTRLDEFAULT | DSBCAPS_GETCURRENTPOSITION2;
 dsbd.dwReserved=0;
 dsbd.dwBufferBytes = SoundSlots[slot].length;
 dsbd.lpwfxFormat = &waveformat;

 hr = IDirectSound_CreateSoundBuffer(lpds, &dsbd, &SoundSlots[slot].lpsb, NULL);
 if ( hr != DS_OK ) {
  printf("Createsoundbuffer failed! hr=0x%X\n", (int)hr);
  abort();
 }
 {
  char *ptr1, *ptr2;
  int len1, len2;
  IDirectSoundBuffer_Lock(SoundSlots[slot].lpsb, 0, GameSounds[soundnum].length,
         (void **)&ptr1, &len1, (void **)&ptr2, &len2, 0);
  memcpy(ptr1,GameSounds[soundnum].data, MIN(len1, GameSounds[soundnum].length));
  IDirectSoundBuffer_Unlock(SoundSlots[slot].lpsb, ptr1, len1, ptr2, len2);
 }
 IDirectSoundBuffer_SetPan(SoundSlots[slot].lpsb, ((int)(f2fl(pan) * 20000.0))-10000);
// IDirectSoundBuffer_SetVolume(SoundSlots[slot].lpsb, MIN(((int)(f2fl(SoundSlots[slot].volume) * 15000.0)) - 10000, 0));//nope
 IDirectSoundBuffer_SetVolume(SoundSlots[slot].lpsb, D1vol2DSvol(SoundSlots[slot].volume));
 
 IDirectSoundBuffer_Play(SoundSlots[slot].lpsb, 0, 0, 0);

 //added on 980905 by adb to add sound kill system from original sos digi.c
 reset_sounds_on_channel(slot);
 SampleHandles[next_handle] = slot;
 next_handle++;
 if ( next_handle >= digi_max_channels )
  next_handle = 0;
 //end edit by adb

 return slot;
}

 //added on 980905 by adb to add sound kill system from original sos digi.c
void reset_sounds_on_channel( int channel )
{
 int i;

 for (i=0; i<digi_max_channels; i++)
  if (SampleHandles[i] == channel)
   SampleHandles[i] = -1;
}
//end edit by adb

int digi_start_sound_object(int obj)
{
 int slot;
 HRESULT hr;

 if (!digi_initialised) return -1;
 slot = get_free_slot();

 if (slot<0) return -1;


 SoundSlots[slot].soundno = SoundObjects[obj].soundnum;
 SoundSlots[slot].samples = GameSounds[SoundObjects[obj].soundnum].data;
 SoundSlots[slot].length = GameSounds[SoundObjects[obj].soundnum].length;
 SoundSlots[slot].volume = fixmul(digi_volume, SoundObjects[obj].volume);
 SoundSlots[slot].pan = SoundObjects[obj].pan;
 SoundSlots[slot].position = 0;
 SoundSlots[slot].looped = (SoundObjects[obj].flags & SOF_PLAY_FOREVER);
 SoundSlots[slot].playing = 1;

 memset(&waveformat, 0, sizeof(waveformat));
 waveformat.wFormatTag=WAVE_FORMAT_PCM;
 waveformat.wBitsPerSample=8;
 waveformat.nChannels = 1;
 waveformat.nSamplesPerSec = digi_sample_rate; // 11025;
 waveformat.nBlockAlign =
 waveformat.nChannels * (waveformat.wBitsPerSample/8);
 waveformat.nAvgBytesPerSec =
 waveformat.nSamplesPerSec * waveformat.nBlockAlign;

 memset(&dsbd, 0, sizeof(dsbd));
 dsbd.dwSize = sizeof(dsbd);
 dsbd.dwFlags = DSBCAPS_CTRLDEFAULT | DSBCAPS_GETCURRENTPOSITION2;
 dsbd.dwReserved=0;
 dsbd.dwBufferBytes = SoundSlots[slot].length;
 dsbd.lpwfxFormat = &waveformat;

 hr = IDirectSound_CreateSoundBuffer(lpds, &dsbd, &SoundSlots[slot].lpsb, NULL);
 if ( hr != DS_OK ) {
  abort();
 }
 {
  char *ptr1, *ptr2;
  int len1, len2;
  IDirectSoundBuffer_Lock(SoundSlots[slot].lpsb, 0, SoundSlots[slot].length,
         (void **)&ptr1, &len1, (void **)&ptr2, &len2, 0);
  memcpy(ptr1, SoundSlots[slot].samples, MIN(len1,(int)SoundSlots[slot].length));
  IDirectSoundBuffer_Unlock(SoundSlots[slot].lpsb, (void *)ptr1, len1, (void *)ptr2, len2);
 }
 IDirectSoundBuffer_SetPan(SoundSlots[slot].lpsb, ((int)(f2fl(SoundSlots[slot].pan) * 20000))-10000);
// IDirectSoundBuffer_SetVolume(SoundSlots[slot].lpsb, MIN(((int)(f2fl(SoundSlots[slot].volume) * 15000.0)) - 10000, 0));//nope
 IDirectSoundBuffer_SetVolume(SoundSlots[slot].lpsb,D1vol2DSvol(SoundSlots[slot].volume));
 IDirectSoundBuffer_Play(SoundSlots[slot].lpsb, 0, 0, SoundSlots[slot].looped?DSBPLAY_LOOPING:0);

 SoundObjects[obj].signature = next_signature++;
 SoundObjects[obj].handle = slot;

 SoundObjects[obj].flags |= SOF_PLAYING;
 //added on 980905 by adb to add sound kill system from original sos digi.c
 reset_sounds_on_channel(slot);
 //end edit by adb
 
 return 0;
}


// Play the given sound number.
// Volume is max at F1_0.
void digi_play_sample( int soundno, fix max_volume )
{
#ifdef NEWDEMO
	if ( Newdemo_state == ND_STATE_RECORDING )
		newdemo_record_sound( soundno );
#endif
	soundno = digi_xlat_sound(soundno);

	if (!digi_initialised) return;

	if (soundno < 0 ) return;

	digi_start_sound(soundno, max_volume, F0_5);
}

// Play the given sound number. If the sound is already playing,
// restart it.
void digi_play_sample_once( int soundno, fix max_volume )
{
	int i;

#ifdef NEWDEMO
	if ( Newdemo_state == ND_STATE_RECORDING )
		newdemo_record_sound( soundno );
#endif
	soundno = digi_xlat_sound(soundno);

	if (!digi_initialised) return;

	if (soundno < 0 ) return;

        for (i=0; i < MAX_SOUND_SLOTS; i++)
          if (SoundSlots[i].soundno == soundno) {
             SoundSlots[i].playing = 0;
              if (SoundSlots[i].lpsb) {
                unsigned int s;
                IDirectSoundBuffer_GetStatus(SoundSlots[i].lpsb, &s);
                if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[i].lpsb);
                IDirectSoundBuffer_Release(SoundSlots[i].lpsb);
                SoundSlots[i].playing = 0;
                SoundSlots[i].lpsb = NULL;
              }
          }
	digi_start_sound(soundno, max_volume, F0_5);

}

void digi_play_sample_3d( int soundno, int angle, int volume, int no_dups ) // Volume from 0-0x7fff
{
	no_dups = 1;

#ifdef NEWDEMO
	if ( Newdemo_state == ND_STATE_RECORDING )		{
		if ( no_dups )
			newdemo_record_sound_3d_once( soundno, angle, volume );
		else
			newdemo_record_sound_3d( soundno, angle, volume );
	}
#endif
	soundno = digi_xlat_sound(soundno);

	if (!digi_initialised) return;
	if (soundno < 0 ) return;

	if (volume < MIN_VOLUME ) return;
	digi_start_sound(soundno, volume, angle);
}

void digi_get_sound_loc( vms_matrix * listener, vms_vector * listener_pos, int listener_seg, vms_vector * sound_pos, int sound_seg, fix max_volume, int *volume, int *pan, fix max_distance )
{	  
	vms_vector	vector_to_sound;
	fix angle_from_ear, cosang,sinang;
	fix distance;
	fix path_distance;

	*volume = 0;
	*pan = 0;

	max_distance = (max_distance*5)/4;		// Make all sounds travel 1.25 times as far.

	//	Warning: Made the vm_vec_normalized_dir be vm_vec_normalized_dir_quick and got illegal values to acos in the fang computation.
	distance = vm_vec_normalized_dir_quick( &vector_to_sound, sound_pos, listener_pos );
		
	if (distance < max_distance )	{
		int num_search_segs = f2i(max_distance/20);
		if ( num_search_segs < 1 ) num_search_segs = 1;

		path_distance = find_connected_distance(listener_pos, listener_seg, sound_pos, sound_seg, num_search_segs, WID_RENDPAST_FLAG );
		if ( path_distance > -1 )	{
			*volume = max_volume - fixdiv(path_distance,max_distance);
			//mprintf( (0, "Sound path distance %.2f, volume is %d / %d\n", f2fl(distance), *volume, max_volume ));
			if (*volume > 0 )	{
				angle_from_ear = vm_vec_delta_ang_norm(&listener->rvec,&vector_to_sound,&listener->uvec);
				fix_sincos(angle_from_ear,&sinang,&cosang);
				//mprintf( (0, "volume is %.2f\n", f2fl(*volume) ));
				if (Config_channels_reversed) cosang *= -1;
				*pan = (cosang + F1_0)/2;
			} else {
				*volume = 0;
			}
		}
	}																					  
}

int digi_link_sound_to_object2( int org_soundnum, short objnum, int forever, fix max_volume, fix  max_distance )
{
	int i,volume,pan;
	object * objp;
	int soundnum;

	soundnum = digi_xlat_sound(org_soundnum);

	if ( max_volume < 0 ) return -1;
//	if ( max_volume > F1_0 ) max_volume = F1_0;

	if (!digi_initialised) return -1;
	if (soundnum < 0 ) return -1;
	if (GameSounds[soundnum].data==NULL) {
		Int3();
		return -1;
	}
	if ((objnum<0)||(objnum>Highest_object_index))
		return -1;

	if ( !forever )	{
		// Hack to keep sounds from building up...
		digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, &Objects[objnum].pos, Objects[objnum].segnum, max_volume,&volume, &pan, max_distance );
		digi_play_sample_3d( org_soundnum, pan, volume, 0 );
		return -1;
	}

       	for (i=0; i<MAX_SOUND_OBJECTS; i++ )
        	if (SoundObjects[i].flags==0)
	           break;

	if (i==MAX_SOUND_OBJECTS) {
		mprintf((1, "Too many sound objects!\n" ));
		return -1;
	}

	SoundObjects[i].signature=next_signature++;
	SoundObjects[i].flags = SOF_USED | SOF_LINK_TO_OBJ;
	if ( forever )
		SoundObjects[i].flags |= SOF_PLAY_FOREVER;
	SoundObjects[i].lo_objnum = objnum;
	SoundObjects[i].lo_objsignature = Objects[objnum].signature;
	SoundObjects[i].max_volume = max_volume;
	SoundObjects[i].max_distance = max_distance;
	SoundObjects[i].volume = 0;
	SoundObjects[i].pan = 0;
	SoundObjects[i].soundnum = soundnum;

	objp = &Objects[SoundObjects[i].lo_objnum];
	digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, 
                       &objp->pos, objp->segnum, SoundObjects[i].max_volume,
                       &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );

	if (!forever || SoundObjects[i].volume >= MIN_VOLUME)
	       digi_start_sound_object(i);

	return SoundObjects[i].signature;
}

int digi_link_sound_to_object( int soundnum, short objnum, int forever, fix max_volume )
{ return digi_link_sound_to_object2( soundnum, objnum, forever, max_volume, 256*F1_0); }

int digi_link_sound_to_pos2( int org_soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume, fix max_distance )
{
	int i, volume, pan;
	int soundnum;

	soundnum = digi_xlat_sound(org_soundnum);

	if ( max_volume < 0 ) return -1;
//	if ( max_volume > F1_0 ) max_volume = F1_0;

	if (!digi_initialised) return -1;
	if (soundnum < 0 ) return -1;
	if (GameSounds[soundnum].data==NULL) {
		Int3();
		return -1;
	}

	if ((segnum<0)||(segnum>Highest_segment_index))
		return -1;

	if ( !forever )	{
		// Hack to keep sounds from building up...
		digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, pos, segnum, max_volume, &volume, &pan, max_distance );
		digi_play_sample_3d( org_soundnum, pan, volume, 0 );
		return -1;
	}

	for (i=0; i<MAX_SOUND_OBJECTS; i++ )
		if (SoundObjects[i].flags==0)
			break;
	
	if (i==MAX_SOUND_OBJECTS) {
		mprintf((1, "Too many sound objects!\n" ));
		return -1;
	}


	SoundObjects[i].signature=next_signature++;
	SoundObjects[i].flags = SOF_USED | SOF_LINK_TO_POS;
	if ( forever )
		SoundObjects[i].flags |= SOF_PLAY_FOREVER;
	SoundObjects[i].lp_segnum = segnum;
	SoundObjects[i].lp_sidenum = sidenum;
	SoundObjects[i].lp_position = *pos;
	SoundObjects[i].soundnum = soundnum;
	SoundObjects[i].max_volume = max_volume;
	SoundObjects[i].max_distance = max_distance;
	SoundObjects[i].volume = 0;
	SoundObjects[i].pan = 0;
	digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, 
					   &SoundObjects[i].lp_position, SoundObjects[i].lp_segnum,
					   SoundObjects[i].max_volume,
                       &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
	
	if (!forever || SoundObjects[i].volume >= MIN_VOLUME)
		digi_start_sound_object(i);

	return SoundObjects[i].signature;
}

int digi_link_sound_to_pos( int soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume )
{
	return digi_link_sound_to_pos2( soundnum, segnum, sidenum, pos, forever, max_volume, F1_0 * 256 );
}

void digi_kill_sound_linked_to_segment( int segnum, int sidenum, int soundnum )
{
	int i,killed;

	soundnum = digi_xlat_sound(soundnum);

	if (!digi_initialised) return;

	killed = 0;

	for (i=0; i<MAX_SOUND_OBJECTS; i++ )	{
		if ( (SoundObjects[i].flags & SOF_USED) && (SoundObjects[i].flags & SOF_LINK_TO_POS) )	{
			if ((SoundObjects[i].lp_segnum == segnum) && (SoundObjects[i].soundnum==soundnum ) && (SoundObjects[i].lp_sidenum==sidenum) ) {
				if ( SoundObjects[i].flags & SOF_PLAYING )	{
				        SoundSlots[SoundObjects[i].handle].playing = 0;
                                         if (SoundSlots[SoundObjects[i].handle].lpsb) {
                                           unsigned int s;
                                           IDirectSoundBuffer_GetStatus(SoundSlots[SoundObjects[i].handle].lpsb, &s);
                                           if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[SoundObjects[i].handle].lpsb);
                                           IDirectSoundBuffer_Release(SoundSlots[SoundObjects[i].handle].lpsb);
                                           SoundSlots[SoundObjects[i].handle].playing = 0;
                                           SoundSlots[SoundObjects[i].handle].lpsb = NULL;
                                         }
				}
				SoundObjects[i].flags = 0;	// Mark as dead, so some other sound can use this sound
				killed++;
			}
		}
	}
	// If this assert happens, it means that there were 2 sounds
	// that got deleted. Weird, get John.
	if ( killed > 1 )	{
		mprintf( (1, "ERROR: More than 1 sounds were deleted from seg %d\n", segnum ));
	}
}

void digi_kill_sound_linked_to_object( int objnum )
{
	int i,killed;

	if (!digi_initialised) return;

	killed = 0;

	for (i=0; i<MAX_SOUND_OBJECTS; i++ )	{
		if ( (SoundObjects[i].flags & SOF_USED) && (SoundObjects[i].flags & SOF_LINK_TO_OBJ ) )	{
			if (SoundObjects[i].lo_objnum == objnum)   {
				if ( SoundObjects[i].flags & SOF_PLAYING )	{
                                     SoundSlots[SoundObjects[i].handle].playing = 0;
                                         if (SoundSlots[SoundObjects[i].handle].lpsb) {
                                           unsigned int s;
                                           IDirectSoundBuffer_GetStatus(SoundSlots[SoundObjects[i].handle].lpsb, &s);
                                           if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[SoundObjects[i].handle].lpsb);
                                           IDirectSoundBuffer_Release(SoundSlots[SoundObjects[i].handle].lpsb);
                                           SoundSlots[SoundObjects[i].handle].playing = 0;
                                           SoundSlots[SoundObjects[i].handle].lpsb = NULL;
                                         }
				}
				SoundObjects[i].flags = 0;	// Mark as dead, so some other sound can use this sound
				killed++;
			}
		}
	}
	// If this assert happens, it means that there were 2 sounds
	// that got deleted. Weird, get John.
	if ( killed > 1 )	{
		mprintf( (1, "ERROR: More than 1 sounds were deleted from object %d\n", objnum ));
	}
}

void digi_sync_sounds()
{
	int i;
	int oldvolume, oldpan;

	if (!digi_initialised) return;

	for (i=0; i<MAX_SOUND_OBJECTS; i++ )	{
		if ( SoundObjects[i].flags & SOF_USED )	{
			oldvolume = SoundObjects[i].volume;
			oldpan = SoundObjects[i].pan;

			if ( !(SoundObjects[i].flags & SOF_PLAY_FOREVER) )	{
			 	// Check if its done.
				if (SoundObjects[i].flags & SOF_PLAYING) {
					if (!SoundSlots[SoundObjects[i].handle].playing) {
						SoundObjects[i].flags = 0;	// Mark as dead, so some other sound can use this sound
						continue;		// Go on to next sound...
					}
				}
			}			
		
			if ( SoundObjects[i].flags & SOF_LINK_TO_POS )	{
				digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, 
								&SoundObjects[i].lp_position, SoundObjects[i].lp_segnum,
								SoundObjects[i].max_volume,
                                &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );

			} else if ( SoundObjects[i].flags & SOF_LINK_TO_OBJ )	{
				object * objp;
	
				objp = &Objects[SoundObjects[i].lo_objnum];
		
				if ((objp->type==OBJ_NONE) || (objp->signature!=SoundObjects[i].lo_objsignature))  {
					// The object that this is linked to is dead, so just end this sound if it is looping.
					if ( (SoundObjects[i].flags & SOF_PLAYING)  && (SoundObjects[i].flags & SOF_PLAY_FOREVER))	{
					     SoundSlots[SoundObjects[i].handle].playing = 0;
                                             if (SoundSlots[SoundObjects[i].handle].lpsb) {
                                               unsigned int s;
                                               IDirectSoundBuffer_GetStatus(SoundSlots[SoundObjects[i].handle].lpsb, &s);
                                               if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[SoundObjects[i].handle].lpsb);
                                               IDirectSoundBuffer_Release(SoundSlots[SoundObjects[i].handle].lpsb);
                                               SoundSlots[SoundObjects[i].handle].playing = 0;
                                               SoundSlots[SoundObjects[i].handle].lpsb = NULL;
                                             }
					}
					SoundObjects[i].flags = 0;	// Mark as dead, so some other sound can use this sound
					continue;		// Go on to next sound...
				} else {
					digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, 
	                                &objp->pos, objp->segnum, SoundObjects[i].max_volume,
                                   &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
				}
			}
			 
			if (oldvolume != SoundObjects[i].volume) 	{
				if ( SoundObjects[i].volume < MIN_VOLUME )	 {
					// Sound is too far away, so stop it from playing.
					if ((SoundObjects[i].flags & SOF_PLAYING)&&(SoundObjects[i].flags & SOF_PLAY_FOREVER))	{
                                        	SoundSlots[SoundObjects[i].handle].playing = 0;
                                                if (SoundSlots[SoundObjects[i].handle].lpsb) {
                                                  unsigned int s;
                                                  IDirectSoundBuffer_GetStatus(SoundSlots[SoundObjects[i].handle].lpsb, &s);
                                                  if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[SoundObjects[i].handle].lpsb);
                                                  IDirectSoundBuffer_Release(SoundSlots[SoundObjects[i].handle].lpsb);
                                                  SoundSlots[SoundObjects[i].handle].playing = 0;
                                                  SoundSlots[SoundObjects[i].handle].lpsb = NULL;
                                                }
						SoundObjects[i].flags &= ~SOF_PLAYING;		// Mark sound as not playing
					}
				} else {
					if (!(SoundObjects[i].flags & SOF_PLAYING))	{
						digi_start_sound_object(i);
					} else {
					        SoundSlots[SoundObjects[i].handle].volume = fixmuldiv(SoundObjects[i].volume,digi_volume,F1_0);
					}
				}
			}
				
			if (oldpan != SoundObjects[i].pan) 	{
				if (SoundObjects[i].flags & SOF_PLAYING)
                                        SoundSlots[SoundObjects[i].handle].pan = SoundObjects[i].pan;
			}
		}
	}
}

void digi_init_sounds()
{
	int i;

	if (!digi_initialised) return;

	digi_reset_digi_sounds();

	for (i=0; i<MAX_SOUND_OBJECTS; i++ )	{
		if (digi_sounds_initialized) {
			if ( SoundObjects[i].flags & SOF_PLAYING )	{
			        SoundSlots[SoundObjects[i].handle].playing=0;
                                    if (SoundSlots[SoundObjects[i].handle].lpsb) {
                                           unsigned int s;
                                           IDirectSoundBuffer_GetStatus(SoundSlots[SoundObjects[i].handle].lpsb, &s);
                                           if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[SoundObjects[i].handle].lpsb);
                                           IDirectSoundBuffer_Release(SoundSlots[SoundObjects[i].handle].lpsb);
                                           SoundSlots[SoundObjects[i].handle].playing = 0;
                                           SoundSlots[SoundObjects[i].handle].lpsb = NULL;
                                    }
			}
		}
		SoundObjects[i].flags = 0;	// Mark as dead, so some other sound can use this sound
	}
	digi_sounds_initialized = 1;
}

//added on 980905 by adb from original source to make sfx volume work
void digi_set_digi_volume( int dvolume )
{
	dvolume = fixmuldiv( dvolume, SOUND_MAX_VOLUME, 0x7fff);
	if ( dvolume > SOUND_MAX_VOLUME )
		digi_volume = SOUND_MAX_VOLUME;
	else if ( dvolume < 0 )
		digi_volume = 0;
	else
		digi_volume = dvolume;

	if ( !digi_initialised ) return;

	digi_sync_sounds();
}
//end edit by adb

void digi_set_volume( int dvolume, int mvolume ) 
{ 
	digi_set_digi_volume(dvolume);
	digi_set_midi_volume(mvolume);
}

int digi_is_sound_playing(int soundno)
{
	int i;

	soundno = digi_xlat_sound(soundno);

	for (i = 0; i < MAX_SOUND_SLOTS; i++)
		  //changed on 980905 by adb: added SoundSlots[i].playing &&
		  if (SoundSlots[i].playing && SoundSlots[i].soundno == soundno)
		  //end changes by adb
			return 1;
	return 0;
}


void digi_pause_all() { }
void digi_resume_all() { }
void digi_stop_all() { }

 //added on 980905 by adb to make sound channel setting work
void digi_set_max_channels(int n) { 
	digi_max_channels	= n;

	if ( digi_max_channels < 1 ) 
		digi_max_channels = 1;
	if ( digi_max_channels > (MAX_SOUND_SLOTS-MAX_SOUND_OBJECTS) ) 
		digi_max_channels = (MAX_SOUND_SLOTS-MAX_SOUND_OBJECTS);

	if ( !digi_initialised ) return;

	digi_reset_digi_sounds();
}

int digi_get_max_channels() { 
	return digi_max_channels; 
}
// end edit by adb

void digi_reset_digi_sounds() {
 int i;
 unsigned int s;

 for (i=0; i< MAX_SOUND_SLOTS; i++) {
  SoundSlots[i].playing=0;
  if (SoundSlots[i].lpsb) {
   IDirectSoundBuffer_GetStatus(SoundSlots[i].lpsb, &s);
   if (s & DSBSTATUS_PLAYING) IDirectSoundBuffer_Stop(SoundSlots[i].lpsb);
   IDirectSoundBuffer_Release(SoundSlots[i].lpsb);
   SoundSlots[i].playing = 0;
   SoundSlots[i].lpsb = NULL;
  }

 }
 
 //added on 980905 by adb to reset sound kill system
 memset(SampleHandles, 255, sizeof(SampleHandles));
 next_handle = 0;
 //end edit by adb
}
#else
int digi_lomem = 0;
int digi_midi_song_playing = 0;
static int digi_initialised = 0;
int midi_volume = 255;

int digi_get_settings() { return 0; }
int digi_init() { digi_initialised = 1; return 0; }
void digi_reset() {}
void digi_close() {}

void digi_play_sample( int sndnum, fix max_volume ) {}
void digi_play_sample_once( int sndnum, fix max_volume ) {}
int digi_link_sound_to_object( int soundnum, short objnum, int forever, fix max_volume ) { return 0; }
int digi_link_sound_to_pos( int soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume ) { return 0; }
// Same as above, but you pass the max distance sound can be heard.  The old way uses f1_0*256 for max_distance.
int digi_link_sound_to_object2( int soundnum, short objnum, int forever, fix max_volume, fix  max_distance ) { return 0; }
int digi_link_sound_to_pos2( int soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume, fix max_distance ) { return 0; }

void digi_play_sample_3d( int soundno, int angle, int volume, int no_dups ) {} // Volume from 0-0x7fff

void digi_init_sounds() {}
void digi_sync_sounds() {}
void digi_kill_sound_linked_to_segment( int segnum, int sidenum, int soundnum ) {}
void digi_kill_sound_linked_to_object( int objnum ) {}

void digi_set_digi_volume( int dvolume ) {}
void digi_set_volume( int dvolume, int mvolume ) {}

int digi_is_sound_playing(int soundno) { return 0; }

void digi_pause_all() {}
void digi_resume_all() {}
void digi_stop_all() {}

void digi_set_max_channels(int n) {}
int digi_get_max_channels() { return 0; }

#endif

#ifdef MIDI_SOUND
// MIDI stuff follows.

void digi_stop_current_song()
{
	if ( digi_midi_song_playing ) {
	    hmp_close(hmp);
	    hmp = NULL;
	    digi_midi_song_playing = 0;
	}
}

void digi_set_midi_volume( int n )
{
	int mm_volume;

	if (n < 0)
		midi_volume = 0;
	else if (n > 127)
		midi_volume = 127;
	else
		midi_volume = n;

	// scale up from 0-127 to 0-0xffff
	mm_volume = (midi_volume << 1) | (midi_volume & 1);
	mm_volume |= (mm_volume << 8);

	if (hmp)
		midiOutSetVolume((HMIDIOUT)hmp->hmidi, mm_volume | mm_volume << 16);
}

void digi_play_midi_song( char * filename, char * melodic_bank, char * drum_bank, int loop )
{       
	if (!digi_initialised) return;

        digi_stop_current_song();

       //added on 5/20/99 by Victor Rachels to fix crash/etc
        if(filename == NULL) return;
        if(midi_volume < 1) return;
       //end this section addition - VR

	if ((hmp = hmp_open(filename))) {
	    hmp_play(hmp);
	    digi_midi_song_playing = 1;
	    digi_set_midi_volume(midi_volume);
	}
	else
		printf("hmp_open failed\n");
}
#else
void digi_stop_current_song() {}
void digi_set_midi_volume( int n ) {}
void digi_play_midi_song( char * filename, char * melodic_bank, char * drum_bank, int loop ) {}
#endif