AdLib music support

Actor_WorkType.HC

@@ -21,8 +21,8 @@ U0 actor_wt_133_boss_purple_15411(ActorData *actor)
     {
         word_2E21E = 1;
         actor_add_new(0xf4, player_x_pos - 1, player_y_pos - 5);
-        //stop_music();
-        //load_music(2);
+        stop_music();
+        load_music(2);
     }
     
     if (actor->has_moved_right_flag > 0)

Dialog.HC

@@ -528,7 +528,7 @@ U0 now_entering_level_n_dialog(U16 level_number)
 I64 main_menu() {
     set_initial_game_state();
     show_one_moment_screen_flag = 0;
-    //load_music(0x12);
+    load_music(0x12);
     display_fullscreen_image(1);
     flush_input();
     I64 i, return_to_title;
@@ -575,7 +575,7 @@ I64 main_menu() {
                             Bt(kbd.down_bitmap, Char2ScanCode(' ')))
                         {
 
-                            //stop_music();
+                            stop_music();
                             show_one_moment_screen_flag = 1;
                             show_monster_attack_hint = 0;
                             //play_sfx(0x30);
@@ -588,7 +588,7 @@ I64 main_menu() {
                             //restore_status = restore_savegame_dialog();
                             if(restore_status == 1)
                             {
-                                //stop_music();
+                                stop_music();
                                 return PLAY_GAME;
                             }
 
@@ -752,7 +752,7 @@ U0 monster_attack_hint_dialog()
 
 U0 display_score_from_level()
 {
-    //stop_music();
+    stop_music();
 
     if(num_stars_collected == 0)
     {

Fullscreen_Image.HC

@@ -76,7 +76,7 @@ U0 display_fullscreen_image(U8 image_number)
 
     if(image_number != 1 && image_number != 2)
     {
-        //stop_music();
+        stop_music();
     }
 
     fade_to_black_speed_3();

HDAudio.HC

@@ -0,0 +1,992 @@
+Bool audio_sync_begin = FALSE;
+
+class AudioStream
+{
+    I64 rate;
+    I64 channels;
+    I64 bits;
+    U32 *buf;
+    I64 size;
+};
+
+U8 *Mem2MegAlloc(I64 *_pages2Meg,CBlkPool *bp=NULL)
+{/*Alloc 2Meg pages from BlkPool. Don't link to task.
+(Linking to a task means they will be freed when the task dies.)
+It might give you more than you asked for
+so a ptr to a page count is passed.
+
+Return: NULL if out of memory.
+*/
+  I64 i,j,*pte,num=*_pages2Meg;
+  CMemBlk *res=NULL,*m,*m1;
+
+  if (!bp) bp=sys_code_bp;
+  PUSHFD
+  CLI
+  while (LBts(&bp->locked_flags,BPlf_LOCKED))
+    PAUSE
+  num<<=21-MEM_PAG_BITS;
+
+  m=&bp->mem_free_2meg_lst;
+  while (TRUE) {
+    if (!(res=m->next))
+      break;
+    if (res->pags<num)
+      m=res;
+    else {
+      if (res->pags==num) {
+	m->next=res->next;
+	goto am_done;
+      } else {
+	res->pags-=num;
+	res(U8 *)+=res->pags<<MEM_PAG_BITS;
+	res->pags=num;
+	goto am_done;
+      }
+    }
+  }
+
+  m=&bp->mem_free_lst;
+  while (TRUE) {
+    if (!(res=m->next)) {
+      num=0;
+      res=NULL; //Out of memory
+      goto am_done;
+    }
+    if (res->pags<num)
+      m=res;
+    else {
+      if (res->pags==num) {
+	if (res(U8 *)&0x1FFFFF)
+	  m=res;
+	else {
+	  m->next=res->next;
+	  goto am_done;
+	}
+      } else {
+	if (i=(res(U8 *)&0x1FFFFF)>>MEM_PAG_BITS) {
+	  j=1<<(21-MEM_PAG_BITS)-i;
+	  if (res->pags<num+j)
+	    m=res;
+	  else if (res->pags==num+j) {
+	    res->pags-=num;
+	    res(U8 *)+=res->pags<<MEM_PAG_BITS;
+	    res->pags=num;
+	    goto am_done;
+	  } else {
+	    m1=res;
+	    res(U8 *)+=j<<MEM_PAG_BITS;
+	    res->pags=num;
+	    m=res(U8 *)+num<<MEM_PAG_BITS;
+	    m->pags=m1->pags-num-j;
+	    m1->pags=j;
+	    m->next=m1->next;
+	    m1->next=m;
+	    m->mb_signature=MBS_UNUSED_SIGNATURE_VAL;
+	    goto am_done;
+	  }
+	} else {
+	  m=m->next=res(U8 *)+num<<MEM_PAG_BITS;
+	  m->next=res->next;
+	  m->pags=res->pags-num;
+	  m->mb_signature=MBS_UNUSED_SIGNATURE_VAL;
+	  res->pags=num;
+	  goto am_done;
+	}
+      }
+    }
+  }
+am_done:
+  i=num<<MEM_PAG_BITS;
+  bp->used_u8s+=i;
+  num>>=21-MEM_PAG_BITS;
+  *_pages2Meg=num;
+  m=res;
+  m1=m(U8 *)+i;
+  while (m<m1) {
+    pte=MemPageTable(m);
+    *pte &= ~0x18;
+    InvlPg(m);
+    m(U8 *)+=0x200000;
+  }
+  LBtr(&bp->locked_flags,BPlf_LOCKED);
+  POPFD
+  return res;
+}
+
+U8 *Mem2MegUncachedAlloc(I64 *_pages2Meg,CBlkPool *bp=NULL)
+{/*Alloc 2Meg pages from BlkPool. Don't link to task.
+(Linking to a task means they will be freed when the task dies.)
+It will be marked uncached. It might give you more than you asked for
+so a ptr to a page count is passed.
+
+Return: NULL if out of memory.
+*/
+  CMemBlk *res,*m,*m1;
+  I64 num=*_pages2Meg,*pte;
+  if (res=Mem2MegAlloc(_pages2Meg,bp)) {
+    num=*_pages2Meg;
+    m=res;
+    m1=m(U8 *)+num<<21;
+    while (m<m1) {
+      pte=MemPageTable(m);
+      *pte= *pte& ~0x18 |0x10;
+      InvlPg(m);
+      m(U8 *)+=0x200000;
+    }
+  }
+  return res;
+}
+
+CHeapCtrl *HeapCtrlBPInit(CBlkPool *bp,I64 pags)
+{//Make mem chunk into HeapCtrl and BlkPool.
+  I64 num;
+  CMemBlk *m;
+  CHeapCtrl *hc;
+  MemSet(bp,0,sizeof(CBlkPool)+sizeof(CHeapCtrl));
+  hc=HeapCtrlInit(bp(U8 *)+sizeof(CBlkPool),,bp);
+  m=(bp(U8 *)+sizeof(CBlkPool)+sizeof(CHeapCtrl)+MEM_PAG_SIZE-1)&
+	~(MEM_PAG_SIZE-1);
+  num=(bp(U8 *)+pags<<MEM_PAG_BITS-m(U8 *))>>MEM_PAG_BITS;
+  bp->alloced_u8s=(pags-num)<<MEM_PAG_BITS;
+  BlkPoolAdd(bp,m,num);
+  return hc;
+}
+
+class CSndWaveCtrl
+{
+  I64 sample_rate,sample_bits,channels;
+  F64 freq_multiplier,amp_multiplier;
+  F64 phase,last_y,last_dydt,next_y;
+};
+
+#define WF_NULL                 0
+#define WF_SQUARE               1
+#define WF_SINE                 2
+#define WF_TRI                  3
+#define WF_SAWTOOTH             4
+#define WF_NOISE                5
+#define WF_WAVEFORMS_NUM        6
+
+//snd devs
+#define SD_PC_SPEAKER		0
+#define SD_HD_AUDIO		1
+
+#define SND_SAMPLE_RATE		48000
+#define SND_SAMPLE_BITS		16
+#define SND_OCHANNELS		2
+#define SND_ICHANNELS		2
+#define SND_OUT_CONTAINER	U32
+#define SND_IN_CONTAINER	I16
+#define SND_BUF_LEN		0x400
+#define SND_BUF_TIME_mS		(SND_BUF_LEN/SND_OCHANNELS*1000.0/\
+				SND_SAMPLE_RATE)
+
+F64 snd_freq=0;
+I64 snd_dev=SD_PC_SPEAKER;
+Bool snd_record=FALSE;
+F64 snd_vol=0.1;
+U0 (*fp_snd)(F64 freq,I64 waveform,F64 amp)=NULL;
+U0 (*fp_snd_record)(F64 freq,I64 waveform,F64 amp)=NULL;
+U0 (*fp_snd_fill_buf)(SND_OUT_CONTAINER *buf,I64 buf_num)=NULL;
+U0 (*fp_snd_copy_buf)(SND_IN_CONTAINER *buf,I64 buf_num)=NULL;
+
+I64 snd_obuf_num,snd_ibuf_num;
+
+#define Sf_FILLING_OUT		0
+I64 snd_flags;
+
+#define HD_1_CHAN	0
+#define HD_2_CHAN	1
+#define HD_3_CHAN	2
+#define HD_4_CHAN	3
+
+#define HD_8_BIT	0
+#define HD_16_BIT	1
+#define HD_20_BIT	2
+#define HD_24_BIT	3
+#define HD_32_BIT	4
+
+#define HD_48kHz	0
+
+#define HD_DFT_OUT_FMT	(HD_2_CHAN+HD_16_BIT<<4+HD_48kHz<<8)
+#define HD_DFT_IN_FMT	(HD_2_CHAN+HD_16_BIT<<4+HD_48kHz<<8)
+
+#define HD_POS_BUF_MULTIPLES	0x1000
+
+#define HD_CORB_ENTRIES	256
+#define HD_RIRB_ENTRIES	256
+#define HD_BDL_ENTRIES	256
+
+#define HD_GCTL		0x08
+#define HD_STATESTS	0x0E
+#define HD_GSTS		0x10
+#define HD_CORBLBASE	0x40
+#define HD_CORBUBASE	0x44
+#define HD_CORBWP	0x48
+#define HD_CORBRP	0x4A
+#define HD_CORBCTL	0x4C
+#define HD_CORBST	0x4D
+#define HD_RIRBLBASE	0x50
+#define HD_RIRBUBASE	0x54
+#define HD_RIRBWP	0x58
+#define HD_RIRBCTL	0x5C
+#define HD_RIRBSTS	0x5D
+
+#define STRCTL		0x00
+#define STRSTS		0x03
+#define STRLPIB		0x04
+#define STRCBL		0x08
+#define STRLVI		0x0C
+#define STRFIFOW	0x0E
+#define STRFIFOS	0x10
+#define STRFMT		0x12
+#define STRBDPL		0x18
+#define STRBDPU		0x1C
+
+#define ISTR0		0x080
+#define ISTR1		0x0A0
+#define ISTR2		0x0C0
+#define ISTR3		0x0E0
+#define OSTR0		0x100
+#define OSTR1		0x120
+#define OSTR2		0x140
+#define OSTR3		0x160
+
+#define VERB_GET_PARAM		0xF0000
+#define VERB_CONNECT_SEL_GET	0xF0100
+#define VERB_CONNECT_SEL_SET	0x70100
+#define VERB_GET_CONNECT_LST	0xF0200
+#define VERB_PROCESS_STATE_GET	0xF0300
+#define VERB_PROCESS_STATE_SET	0x70300
+#define VERB_COEFF_IDX_GET	0xD0000
+#define VERB_COEFF_IDX_SET	0x50000
+#define VERB_PROCESS_COEFF_GET	0xC0000
+#define VERB_PROCESS_COEFF_SET	0x40000
+#define VERB_AMPLIFIER_GAIN_GET	0xB0000
+#define VERB_AMPLIFIER_GAIN_SET	0x30000
+#define VERB_STREAM_FMT_GET	0xA0000
+#define VERB_STREAM_FMT_SET	0x20000
+#define VERB_DIGIT_CONVERT1_GET	0xF0D00
+#define VERB_DIGIT_CONVERT1_SET	0x70D00
+#define VERB_DIGIT_CONVERT2_GET	0xF0D00
+#define VERB_DIGIT_CONVERT2_SET	0x70E00
+#define VERB_POWER_STATE_GET	0xF0500
+#define VERB_POWER_STATE_SET	0x70500
+#define VERB_CHAN_STREAM_ID_GET	0xF0600
+#define VERB_CHAN_STREAM_ID_SET	0x70600
+#define VERB_SDI_SEL_GET	0xF0400
+#define VERB_SDI_SEL_SET	0x70400
+#define VERB_PIN_WIDGET_CTL_GET	0xF0700
+#define VERB_PIN_WIDGET_CTL_SET	0x70700
+#define VERB_UNSOL_ENABLE_GET	0xF0800
+#define VERB_UNSOL_ENABLE_SET	0x70800
+#define VERB_PIN_SENSE_GET	0xF0900
+#define VERB_PIN_SENSE_SET	0x70900
+#define VERB_EAPDBTL_ENABLE_GET 0xF0C00
+#define VERB_EAPDBTL_ENABLE_SET 0x70C00
+#define VERB_BEEP_CTL_GET	0xF0A00
+#define VERB_BEEP_CTL_SET	0x70A00
+#define VERB_GPI_CTRL0_GET	0xF1000
+#define VERB_GPI_CTRL0_SET	0x71000
+#define VERB_GPI_CTRL1_GET	0xF1100
+#define VERB_GPI_CTRL1_SET	0x71100
+#define VERB_GPI_CTRL2_GET	0xF1200
+#define VERB_GPI_CTRL2_SET	0x71200
+#define VERB_GPI_CTRL3_GET	0xF1300
+#define VERB_GPI_CTRL3_SET	0x71300
+#define VERB_GPI_CTRL4_GET	0xF1400
+#define VERB_GPI_CTRL4_SET	0x71400
+#define VERB_GPI_CTRL5_GET	0xF1500
+#define VERB_GPI_CTRL5_SET	0x71500
+#define VERB_GPI_CTRL6_GET	0xF1600
+#define VERB_GPI_CTRL6_SET	0x71600
+#define VERB_GPI_CTRL7_GET	0xF1700
+#define VERB_GPI_CTRL7_SET	0x71700
+#define VERB_GPI_CTRL8_GET	0xF1800
+#define VERB_GPI_CTRL8_SET	0x71800
+#define VERB_GPI_CTRL9_GET	0xF1900
+#define VERB_GPI_CTRL9_SET	0x71900
+#define VERB_GPI_CTRLA_GET	0xF1A00
+#define VERB_GPI_CTRLA_SET	0x71A00
+#define VERB_VOL_CTL_GET	0xF0F00
+#define VERB_VOL_CTL_SET	0x70F00
+#define VERB_SUB_SYS_ID0_GET	0xF2000
+#define VERB_SUB_SYS_ID0_SET	0x72000
+#define VERB_SUB_SYS_ID1_GET	0xF2000
+#define VERB_SUB_SYS_ID1_SET	0x72100
+#define VERB_SUB_SYS_ID2_GET	0xF2000
+#define VERB_SUB_SYS_ID2_SET	0x72200
+#define VERB_SUB_SYS_ID3_GET	0xF2000
+#define VERB_SUB_SYS_ID3_SET	0x72300
+#define VERB_CFG_DFT0_GET	0xF1C00
+#define VERB_CFG_DFT0_SET	0x71C00
+#define VERB_CFG_DFT1_GET	0xF1C00
+#define VERB_CFG_DFT1_SET	0x71D00
+#define VERB_CFG_DFT2_GET	0xF1C00
+#define VERB_CFG_DFT2_SET	0x71E00
+#define VERB_CFG_DFT3_GET	0xF1C00
+#define VERB_CFG_DFT3_SET	0x71F00
+#define VERB_STRIPE_CTL_GET	0xF2400
+#define VERB_STRIPE_CTL_SET	0x72400
+#define VERB_RST		0x7FF00
+
+//Parameters
+#define P_VENDOR_ID		0x00
+#define P_REVISION_ID		0x02
+#define P_SUBNODE_CNT		0x04
+#define P_FUN_GRP_TYPE		0x05
+#define P_AUDIO_FUN_CAP		0x08
+#define P_AUDIO_WIDGET_CAP	0x09
+#define P_SAMPLE_SIZE_RATE_CAP	0x0A
+#define P_STREAM_FMTS		0x0B
+#define P_PIN_CAP		0x0C
+#define P_INPUT_AMP_CAP		0x0D
+#define P_OUTPUT_AMP_CAP	0x12
+#define P_CONNECT_LST_LEN	0x0E
+#define P_POWER_STATES		0x0F
+#define P_PROCESSING_CAP	0x10
+#define P_GPIO_CNT		0x11
+#define P_VOL_KNOB_CAP	0x13
+
+//Function Group Types
+//00 reserved
+#define FGT_AUDIO		1
+#define FGT_VENDOR_MODEM	2
+//03-7F reserved
+//80-FF vendor function group
+
+//Audio Widget Types
+#define AWT_OUTPUT		0x0
+#define AWT_INPUT		0x1
+#define AWT_MIXER		0x2
+#define AWT_SELECTOR		0x3
+#define AWT_PIN_COMPLEX		0x4
+#define AWT_POWER_WIDGET	0x5
+#define AWT_VOL_KNOB_WIDGET	0x6
+#define AWT_BEEP_GEN_WIDGET	0x7
+#define AWT_VENDOR		0xF
+#define AWT_NODE		0x10
+DefineLstLoad("ST_AUDIO_WIDGET_TYPES",
+"Output\0Input\0Mixer\0Sellector\0Pin Complex\0"
+"Power Widget\0Vol Knob\0Beep Gen\0\0\0\0\0\0\0\0Vendor\0Node\0");
+
+class CHDBufDesc
+{
+  I32 *buf;
+  U32 len;
+  U32 ctrl;
+};
+
+#define HD_TONES	8
+
+class CHDAudioCtrl
+{
+  U8 *bar;
+  CBlkPool *bp;
+  CHeapCtrl *hc;
+  I64 cad;
+  U32 *corb;
+  I64 *rirb;
+  CHDBufDesc *ostr0_bdl,*istr0_bdl;
+  SND_OUT_CONTAINER *ostr0_buf[2],*o_tmp_buf;
+  SND_IN_CONTAINER  *istr0_buf[2];
+  CTask *task;
+  I64 waveform;
+  F64 freq,amp;
+  CSndWaveCtrl *tone_swcs[HD_TONES];
+  U8 rirb_rp,corb_wp;
+  Bool audio_task_started,in_running,out_running;
+} hda;
+MemSet(&hda,0,sizeof(CHDAudioCtrl));
+
+F64 SinPhaseCont(F64 last_y,F64 last_dydt,
+		    F64 current_amp,F64 phase_offset)
+{//Next sample of sin waveform.
+  F64 phase;
+  phase=last_y/current_amp;
+  if (phase>1.0) phase=1.0;
+  if (phase<-1.0) phase=-1.0;
+  if (last_dydt<0)
+    phase=pi-ASin(phase);
+  else
+    phase=ASin(phase);
+  return phase-phase_offset;
+}
+
+public CSndWaveCtrl *SndWaveCtrlNew(I64 sample_rate=8000,I64 sample_bits=24,
+  I64 channels=2,CTask *mem_task=NULL)
+{//MAlloc ctrl struct for generating waveforms.
+  CSndWaveCtrl *swc=CAlloc(sizeof(CSndWaveCtrl),mem_task);
+  swc->freq_multiplier=1.0;
+  swc->amp_multiplier=1.0;
+  swc->sample_rate=sample_rate;
+  swc->sample_bits=sample_bits;
+  swc->channels=channels;
+  swc->last_dydt=1.0;
+  return swc;
+}
+
+public U0 SndWaveCtrlDel(CSndWaveCtrl *swc)
+{//Free waveform ctrl.
+  Free(swc);
+}
+
+public U0 SndWaveAddBuf(CSndWaveCtrl *swc,U8 *buf,I64 num_samples,
+  F64 _freq,I64 _waveform=WF_SQUARE,F64 _amp=1.0,F64 _left=1.0, F64 _right=1.0)
+{//Add waveform to buffer.
+//num_samples is multiplied by channels to get buf_len.
+  //left,right range from 0.0-1.0
+  //Supports 16,24 and 32 bits
+  I64 reg i,reg j,reg k;
+  F64 a,f,amp,reg phase;
+  if (!swc) return;
+  _freq*=swc->freq_multiplier;
+  _amp*=swc->amp_multiplier;
+  if (!_freq||!_amp) {
+    swc->last_y=swc->phase=0;
+    swc->last_dydt=1.0;
+  } else {
+    phase=swc->phase;
+    i=0;
+    amp=Min(I32_MAX,I32_MAX*_amp);
+    f=2*pi/swc->sample_rate*_freq;
+    switch (_waveform) {
+      case WF_NOISE:
+	a=2.0/pi*amp;
+	break;
+      case WF_SAWTOOTH:
+	a=amp/pi;
+	break;
+      case WF_SINE:
+	phase=SinPhaseCont(swc->last_y,swc->last_dydt,amp,0.0);
+	break;
+    }
+    while (phase<0)
+      phase+=2*pi;
+    while (phase>=2*pi)
+      phase-=2*pi;
+    num_samples*=swc->channels;
+    while (i<num_samples) {
+      switch (_waveform) {
+	case WF_SQUARE:
+	  if (phase>=pi)
+	    j=-amp;
+	  else
+	    j=amp;
+	  break;
+	case WF_SINE:
+	  j=amp*Sin(phase);
+	  break;
+	case WF_TRI:
+	  if (phase>=pi) {
+	    swc->last_y=swc->next_y;
+	    swc->next_y=-amp*Sign(swc->last_y)+.00001;
+	    phase-=pi;
+	  }
+	  j=(swc->last_y*(pi-phase)+swc->next_y*phase)/pi;
+	  break;
+	case WF_SAWTOOTH:
+	  j=a*(phase-pi);
+	  break;
+	case WF_NOISE:
+	  if (phase<pi) {
+	    if (phase<f) {
+	      swc->last_y=swc->next_y;
+	      swc->next_y=a*RandI16/U16_MAX;
+	    }
+	    j=swc->last_y*(pi-phase)+swc->next_y*phase;
+	  } else {
+	    if (phase-pi<f) {
+	      swc->last_y=swc->next_y;
+	      swc->next_y=a*RandI16/U16_MAX;
+	    }
+	    j=swc->last_y*(2.0*pi-phase)+swc->next_y*(phase-pi);
+	  }
+	  break;
+      }
+//left channel
+      k=j*_left;
+      if (swc->sample_bits==16) {
+	k>>=16;
+	buf(I16 *)[i++]+=k;
+      } else {
+	if (swc->sample_bits==24)
+	  k&=0xFFFFFF00;
+	buf(I32 *)[i++]+=k;
+      }
+//right channel
+      if (swc->channels==2) {
+	k=j*_right;
+	if (swc->sample_bits==16) {
+	  k>>=16;
+	  buf(I16 *)[i++]+=k;
+	} else {
+	  if (swc->sample_bits==24)
+	    k&=0xFFFFFF00;
+	  buf(I32 *)[i++]+=k;
+	}
+      }
+      phase+=f;
+      while (phase>=2*pi)
+	phase-=2*pi;
+    }
+    if (_waveform==WF_SINE) {
+      swc->last_y=amp*Sin(phase);
+      swc->last_dydt=Cos(phase);
+    }
+    swc->phase=phase;
+  }
+}
+
+U0 HDSyncCORB()
+{
+  U16 *wp,*rp;
+  wp =hda.bar+HD_CORBWP;
+  *wp=hda.corb_wp;
+  rp =hda.bar+HD_CORBRP;
+  while (*rp&255!=hda.corb_wp)
+    Yield;
+}
+
+U0 HDWriteCORB(I64 cad,I64 nid,U32 val)
+{
+  val|=cad<<28+nid<<20;
+  hda.corb[++hda.corb_wp]=val;
+}
+
+I64 HDSyncRIRB()
+{
+  U16 *_w;
+  I64 wp,res=0;
+  _w=hda.bar+HD_RIRBWP;
+  wp=*_w;
+  while (hda.rirb_rp!=wp)
+    res=hda.rirb[++hda.rirb_rp];
+  return res;
+}
+
+I64 HDReadRIRB()
+{
+  U16 *_w;
+  I64 wp,res=0;
+  _w=hda.bar+HD_RIRBWP;
+  do {
+    Yield;
+    wp=*_w;
+  } while (wp==hda.rirb_rp);
+  res=hda.rirb[++hda.rirb_rp];
+  return res;
+}
+
+I64 HDWriteCORBSync(I64 cad,I64 nid,U32 val)
+{
+  HDSyncCORB;
+  HDSyncRIRB;
+  HDWriteCORB(cad,nid,val);
+  HDSyncCORB;
+  return HDReadRIRB;
+}
+
+Bool HDTestCORBSync(I64 cad,I64 nid,U32 val)
+{ //Checks for a response
+  U16 *_w;
+  I64 wp;
+
+  HDSyncCORB;
+  HDSyncRIRB;
+  HDWriteCORB(cad,nid,val);
+  HDSyncCORB;
+
+  Sleep(1);
+  _w=hda.bar+HD_RIRBWP;
+  wp=*_w;
+  if (wp==hda.rirb_rp)
+    return FALSE;
+  HDReadRIRB;
+  return TRUE;
+}
+
+U0 HDTraverse(I64 cad,I64 nid)
+{
+  I64 i,len,aud_cap,type;
+  HDWriteCORBSync(cad,nid,VERB_POWER_STATE_SET+0x00); //0 is on
+  HDWriteCORBSync(cad,nid,VERB_EAPDBTL_ENABLE_SET+0x02);
+  HDWriteCORBSync(cad,nid,VERB_PROCESS_STATE_SET+0x02);
+  HDWriteCORBSync(cad,nid,VERB_CONNECT_SEL_SET+0x00);
+  aud_cap=HDWriteCORBSync(cad,nid,VERB_GET_PARAM+P_SUBNODE_CNT);
+  if (aud_cap.u16[0]) {
+    for (i=aud_cap.u16[1];i<aud_cap.u16[1]+aud_cap.u16[0];i++)
+      HDTraverse(cad,i);
+  } else {
+    aud_cap=HDWriteCORBSync(cad,nid,VERB_GET_PARAM+P_AUDIO_WIDGET_CAP);
+    type=aud_cap>>20&15;
+    if (Bt(&aud_cap,8))
+      len=HDWriteCORBSync(cad,nid,VERB_GET_PARAM+P_CONNECT_LST_LEN)&127;
+    else
+      len=0;
+    HDWriteCORBSync(cad,nid,VERB_AMPLIFIER_GAIN_SET+0xF07F); //set I/O amp #0
+    for (i=1;i<len;i++)
+//Set IN amps to mute
+      HDWriteCORBSync(cad,nid,VERB_AMPLIFIER_GAIN_SET+0x7080+i<<8);
+    switch (type) {
+      case AWT_OUTPUT:
+	if (FALSE) //if disabled
+	  HDWriteCORBSync(cad,nid,VERB_CHAN_STREAM_ID_SET+0x00);
+	else
+	  HDWriteCORBSync(cad,nid,VERB_CHAN_STREAM_ID_SET+0x10);
+	HDWriteCORBSync(cad,nid,VERB_STREAM_FMT_SET+HD_DFT_OUT_FMT);
+	HDWriteCORBSync(cad,nid,VERB_PROCESS_STATE_SET+0x01);
+	break;
+      case AWT_INPUT:
+	if (TRUE) //if disabled
+	  HDWriteCORBSync(cad,nid,VERB_CHAN_STREAM_ID_SET+0x00);
+	else
+	  HDWriteCORBSync(cad,nid,VERB_CHAN_STREAM_ID_SET+0x20);
+	HDWriteCORBSync(cad,nid,VERB_STREAM_FMT_SET+HD_DFT_IN_FMT);
+	HDWriteCORBSync(cad,nid,VERB_PROCESS_STATE_SET+0x01);
+	break;
+      case AWT_PIN_COMPLEX:
+	HDWriteCORBSync(cad,nid,VERB_PIN_WIDGET_CTL_SET+0xE2);
+	break;
+    }
+  }
+}
+
+U0 HDRun(Bool in,Bool out)
+{
+  U32 *_d;
+  if (hda.bar) {
+    if (out) {
+      _d=hda.bar+OSTR0+STRCTL;
+      *_d=0x100002;
+      hda.out_running=TRUE;
+    }
+    if (in) {
+      _d=hda.bar+ISTR0+STRCTL;
+      *_d=0x200002;
+      hda.in_running=TRUE;
+    }
+  }
+}
+
+U0 HDStop(Bool in,Bool out)
+{
+  U32 *_d;
+  if (hda.bar) {
+    if (out) {
+      _d=hda.bar+OSTR0+STRCTL;
+      *_d=0;
+      hda.out_running=FALSE;
+    }
+    if (in) {
+      _d=hda.bar+ISTR0+STRCTL;
+      *_d=0;
+      hda.in_running=FALSE;
+    }
+  }
+}
+
+U0 HDSnd(F64 freq,I64 waveform=WF_SQUARE,F64 amp=1.0)
+{
+  hda.waveform=waveform;
+  hda.amp=amp;
+  hda.freq=freq;
+}
+
+U32 *hd_buf=NULL;
+I64 hd_buf_pos=0;
+I64 hd_buf_size=0;
+
+U0 HDFillBuf(SND_OUT_CONTAINER *buf,I64)
+{
+    I64 i;
+    for (i=0;i<SND_BUF_LEN;i++)
+    {
+        buf[i]=0;
+    }
+}
+
+U0 SetAudioStream(AudioStream *stream)
+{
+    hd_buf_pos=0;
+    hd_buf_size=stream->size;
+    hd_buf = stream->buf;
+}
+
+U0 HDAudioTaskEndCB()
+{
+  I64 i;
+  HDStop(FALSE,TRUE);
+  fp_snd=NULL;
+  for (i=0;i<HD_TONES;i++) {
+    SndWaveCtrlDel(hda.tone_swcs[i]);
+    hda.tone_swcs[i]=NULL;
+  }
+  Exit;
+}
+
+public U0 HDTonesInit()
+{
+  I64 i;
+  if (hda.bar) {
+    for (i=0;i<HD_TONES;i++) {
+      hda.tone_swcs[i]->freq_multiplier=1.0;
+      hda.tone_swcs[i]->amp_multiplier=0;
+    }
+    hda.tone_swcs[0]->amp_multiplier=1.0;
+  }
+}
+
+U0 HDAudioTask(I64)
+{
+//I didn't feel like messing around with PCI interrupts
+  //so this task polls every millisecond to know when to
+  //switch buffers.
+  I64 i,next_obuf_trigger=SND_BUF_LEN*sizeof(SND_OUT_CONTAINER)/2,
+	obuf_rollover=0,
+	next_ibuf_trigger=SND_BUF_LEN*sizeof(SND_IN_CONTAINER),
+	ibuf_rollover=0;
+  U32 *pos_in_obuf=hda.bar+OSTR0+STRLPIB,
+	*pos_in_ibuf=hda.bar+ISTR0+STRLPIB;
+  Fs->task_end_cb=&HDAudioTaskEndCB;
+  for (i=0;i<HD_TONES;i++)
+    hda.tone_swcs[i]=SndWaveCtrlNew;
+  HDTonesInit;
+  hda.freq=0;
+  Snd;
+  fp_snd=&HDSnd;
+  fp_snd_fill_buf=&HDFillBuf;
+  fp_snd_copy_buf=NULL;
+  snd_obuf_num=1;
+  snd_ibuf_num=1;
+  HDRun(FALSE,TRUE);
+  hda.audio_task_started=TRUE; //This flag is probably not necessary
+  while (TRUE) {
+    if (next_obuf_trigger-obuf_rollover<=*pos_in_obuf<
+	  next_obuf_trigger-obuf_rollover+
+	  (HD_POS_BUF_MULTIPLES-1)*SND_BUF_LEN*sizeof(SND_OUT_CONTAINER)) {
+      next_obuf_trigger+=SND_BUF_LEN*sizeof(SND_OUT_CONTAINER);
+      if (next_obuf_trigger-obuf_rollover>=
+	    HD_POS_BUF_MULTIPLES*SND_BUF_LEN*sizeof(SND_OUT_CONTAINER))
+	obuf_rollover+=HD_POS_BUF_MULTIPLES*SND_BUF_LEN
+	      *sizeof(SND_OUT_CONTAINER);
+      if (fp_snd_fill_buf) {
+	LBts(&snd_flags,Sf_FILLING_OUT);
+	(*fp_snd_fill_buf)(hda.ostr0_buf[snd_obuf_num&1],snd_obuf_num);
+  audio_sync_begin = TRUE;
+	if (IsMute)
+	  MemSet(hda.ostr0_buf[snd_obuf_num&1],0,
+		SND_BUF_LEN*sizeof(SND_OUT_CONTAINER));
+	LBtr(&snd_flags,Sf_FILLING_OUT);
+      }
+      snd_obuf_num++;
+    }
+    if (next_ibuf_trigger-ibuf_rollover<=*pos_in_ibuf<
+	  next_ibuf_trigger-ibuf_rollover+(HD_POS_BUF_MULTIPLES-1)
+	  *SND_BUF_LEN*sizeof(SND_IN_CONTAINER)) {
+      next_ibuf_trigger+=SND_BUF_LEN*sizeof(SND_IN_CONTAINER);
+      if (next_ibuf_trigger-ibuf_rollover>=
+	    HD_POS_BUF_MULTIPLES*SND_BUF_LEN*sizeof(SND_IN_CONTAINER))
+	ibuf_rollover+=HD_POS_BUF_MULTIPLES*SND_BUF_LEN
+	      *sizeof(SND_IN_CONTAINER);
+      if (fp_snd_copy_buf)
+	(*fp_snd_copy_buf)(hda.istr0_buf[snd_obuf_num&1],snd_ibuf_num);
+      snd_ibuf_num++;
+    }
+    Sleep(1);
+  }
+}
+
+U0 HDRst()
+{
+  U32 d,*_d;
+  HDStop(TRUE,TRUE);
+  _d=hda.bar+HD_GCTL;
+  *_d=0;  //rst
+  do {
+    Sleep(1);
+    d=*_d;
+  } while (d & 1);
+  *_d=1;
+  do {
+    Sleep(1);
+    d=*_d;
+  } while (!(d & 1));
+  Sleep(1);
+}
+
+public U0 HDAudioEnd(Bool rst=TRUE)
+{
+  snd_dev=SD_PC_SPEAKER;
+  if (hda.bar) {
+    Kill(hda.task);
+    hda.task=NULL;
+    if (rst)
+      HDRst;
+    Free(hda.corb);
+    Free(hda.rirb);
+    Free(hda.o_tmp_buf);
+    Free(hda.ostr0_buf[0]);
+    Free(hda.ostr0_buf[1]);
+    Free(hda.istr0_buf[0]);
+    Free(hda.istr0_buf[1]);
+    Free(hda.ostr0_bdl);
+    Free(hda.istr0_bdl);
+    Mem32DevFree(hda.bar);
+    hda.bar=NULL;
+  }
+}
+
+U0 HDAudioUncachedInit()
+{
+  I64 shared_blks=1;
+  hda.bp=Mem2MegUncachedAlloc(&shared_blks);
+  hda.hc=HeapCtrlBPInit(hda.bp,shared_blks<<12);
+}
+
+public Bool HDAudioInit(I64 hd_bus,I64 hd_dev,I64 hd_fun)
+{
+  I64 i;
+  U32 *_d;
+  U16 w,*_w;
+  U8 *_b;
+  if (hda.bar)
+    HDAudioEnd;
+  else
+    HDAudioUncachedInit;
+  if (PCIReadU16(hd_bus,hd_dev,hd_fun,0)==0x8086 &&
+	(hda.bar=PCIReadU32(hd_bus,hd_dev,hd_fun,0x10) & ~(0x1F))) {
+    PCIWriteU16(hd_bus,hd_dev,hd_fun,0x04,
+	  PCIReadU16(hd_bus,hd_dev,hd_fun,0x04)|0x406);
+
+    HDRst;
+
+    hda.corb=CAllocAligned(HD_CORB_ENTRIES*sizeof(U32),128,hda.hc);
+    _d=hda.bar+HD_CORBLBASE;
+    *_d=hda.corb(I64).u32[0];
+    _d=hda.bar+HD_CORBUBASE;
+    *_d=hda.corb(I64).u32[1];
+
+    hda.rirb=CAllocAligned(HD_RIRB_ENTRIES*sizeof(I64),128,hda.hc);
+    _d=hda.bar+HD_RIRBLBASE;
+    *_d=hda.rirb(I64).u32[0];
+    _d=hda.bar+HD_RIRBUBASE;
+    *_d=hda.rirb(I64).u32[1];
+
+    _w=hda.bar+HD_CORBRP;
+    /*
+    *_w=0x8000; //Rst read ptr
+    do {
+      Yield;
+      w=*_w;
+      "%08X\n", w;
+    } while (!(w&0x8000));
+    */
+    *_w=0x0000; //Rst read ptr
+    do {
+      Yield;
+      w=*_w;
+    } while (w&0x8000);
+
+    _w=hda.bar+HD_RIRBWP;
+    *_w=0x8000; //Rst write ptr
+
+    _b=hda.bar+HD_CORBCTL;
+    *_b=0x02; //Run
+    _b=hda.bar+HD_RIRBCTL;
+    *_b=0x02; //Run
+
+    _w=hda.bar+HD_CORBWP;
+    hda.corb_wp=*_w;
+    _w=hda.bar+HD_RIRBWP;
+    hda.rirb_rp=*_w;
+
+    hda.ostr0_bdl =CAllocAligned(
+	  HD_BDL_ENTRIES*sizeof(CHDBufDesc),128,hda.hc);
+    _d=hda.bar+OSTR0+STRBDPL;
+    *_d=hda.ostr0_bdl(I64).u32[0];
+    _d=hda.bar+OSTR0+STRBDPU;
+    *_d=hda.ostr0_bdl(I64).u32[1];
+    for (i=0;i<2;i++) {
+      hda.ostr0_bdl[i].buf=hda.ostr0_buf[i]=
+	    CAllocAligned(
+	    SND_BUF_LEN*sizeof(SND_OUT_CONTAINER),128,hda.hc);
+      hda.ostr0_bdl[i].len=SND_BUF_LEN*sizeof(SND_OUT_CONTAINER);
+      hda.ostr0_bdl[i].ctrl=1;
+    }
+
+    hda.istr0_bdl =CAllocAligned(
+	  HD_BDL_ENTRIES*sizeof(CHDBufDesc),128,hda.hc);
+    _d=hda.bar+ISTR0+STRBDPL;
+    *_d=hda.istr0_bdl(I64).u32[0];
+    _d=hda.bar+ISTR0+STRBDPU;
+    *_d=hda.istr0_bdl(I64).u32[1];
+    for (i=0;i<2;i++) {
+      hda.istr0_bdl[i].buf=hda.istr0_buf[i]=CAllocAligned(
+	    SND_BUF_LEN*sizeof(SND_IN_CONTAINER),128,hda.hc);
+      hda.istr0_bdl[i].len=SND_BUF_LEN*sizeof(SND_IN_CONTAINER);
+      hda.istr0_bdl[i].ctrl=1;
+    }
+
+    _w=hda.bar+HD_STATESTS;
+    w=*_w;
+    while (w) {
+      hda.cad=Bsf(w);
+      if (HDTestCORBSync(hda.cad,0,VERB_GET_PARAM+P_SUBNODE_CNT)) {
+	HDTraverse(hda.cad,0);
+
+	_d=hda.bar+OSTR0+STRLPIB;
+	*_d=0;
+	_d=hda.bar+OSTR0+STRCBL;
+	*_d=HD_POS_BUF_MULTIPLES*SND_BUF_LEN*sizeof(SND_OUT_CONTAINER);
+	_w=hda.bar+OSTR0+STRLVI;
+	*_w=1;	//last valid idx
+	_w=hda.bar+OSTR0+STRFMT;
+	*_w=HD_DFT_OUT_FMT;
+
+	_d=hda.bar+ISTR0+STRLPIB;
+	*_d=0;
+	_d=hda.bar+ISTR0+STRCBL;
+	*_d=HD_POS_BUF_MULTIPLES*SND_BUF_LEN*sizeof(SND_IN_CONTAINER);
+	_w=hda.bar+ISTR0+STRLVI;
+	*_w=1;	//last valid idx
+	_w=hda.bar+ISTR0+STRFMT;
+	*_w=HD_DFT_IN_FMT;
+
+	LBts(&sys_semas[SEMA_SND],0); //turn off until cfg completed
+	LBtr(&snd_flags,Sf_FILLING_OUT);
+	hda.audio_task_started=FALSE;
+	if (mp_cnt>1)
+	  hda.task=Spawn(&HDAudioTask,NULL,"HD Audio",mp_cnt-1);
+	else
+	  hda.task=Spawn(&HDAudioTask,NULL,"HD Audio");
+	while (!hda.audio_task_started)
+	  Yield;
+	snd_dev=SD_HD_AUDIO;
+	return TRUE;
+      }
+      Btr(&w,hda.cad);
+    }
+    HDAudioEnd(FALSE);
+  } else
+    hda.bar=NULL;
+  return FALSE;
+}
+
+Bool HDAudioScan()
+{
+  I64 i=-1,j;
+  while (TRUE) {
+    j=PCIClassFind(0x040300,++i);
+    if (j<0)
+      return FALSE;
+
+    if (HDAudioInit(j.u8[2],j.u8[1],j.u8[0]))
+      return TRUE;
+  }
+}
+
+HDAudioScan;
+Kill(hda.task);
+HDAudioScan;

Main.HC

@@ -17,6 +17,7 @@ I64 main(...)
     Fs->draw_it = &video_draw_it;
     game_init();
     //audio_init();
+    music_init();
 
     video_fill_screen_with_black();
 
@@ -40,7 +41,7 @@ I64 main(...)
         }
 
         game_loop();
-        //stop_music();
+        stop_music();
         /*
         if(game_play_mode == PLAY_GAME)
         {
@@ -50,7 +51,7 @@ I64 main(...)
         game_play_mode = main_menu();
     }
 
-    //stop_music();
+    stop_music();
     //display_exit_text();
 
     return cleanup_and_exit();

Map.HC

@@ -297,7 +297,7 @@ U0 load_level(I64 level_number)
     file_close(&map_file);
 
 
-    //stop_music();
+    stop_music();
     rain_flag = (level_flags & 0x20);
     U16 backdrop_index = (level_flags & 0x1f);
     background_x_scroll_flag = (level_flags & 0x40);
@@ -347,7 +347,7 @@ U0 load_level(I64 level_number)
     status_panel_init();
 
     //write_savegame_file('T');
-    //load_music(music_index);
+    load_music(music_index);
 
     //I Don't think this will be needed.
 

Music.HC

@@ -0,0 +1,118 @@
+extern U8 *load_file_in_new_buf(U8 *filename, U32 *file_size);
+
+#define MUSIC_INSTRUCTION_RATE 560 //Hz
+#define ADLIB_OP_SIZE 4
+
+//Data
+I64 music_index = -1;
+
+U8 *music_data;
+U32 music_data_length;
+
+U32 adlib_instruction_position = 0;
+U32 delay_counter = 0;
+
+U8 music_on_flag = 1;
+
+U8 music_filename_tbl[19][13] = {
+        "MCAVES.MNI",
+        "MSCARRY.MNI",
+        "MBOSS.MNI",
+        "MRUNAWAY.MNI",
+        "MCIRCUS.MNI",
+        "MTEKWRD.MNI",
+        "MEASYLEV.MNI",
+        "MROCKIT.MNI",
+        "MHAPPY.MNI",
+        "MDEVO.MNI",
+        "MDADODA.MNI",
+        "MBELLS.MNI",
+        "MDRUMS.MNI",
+        "MBANJO.MNI",
+        "MEASY2.MNI",
+        "MTECK2.MNI",
+        "MTECK3.MNI",
+        "MTECK4.MNI",
+        "MZZTOP.MNI"
+};
+
+//Get delay between adlib commands. Measured in audio samples.
+U32 get_delay(U32 instruction_num)
+{
+    return (SND_SAMPLE_RATE / MUSIC_INSTRUCTION_RATE) * (music_data[instruction_num*ADLIB_OP_SIZE+2] + (music_data[instruction_num*ADLIB_OP_SIZE+3] << 8));
+}
+
+hd_buf = MAlloc(4096);
+
+U0 music_callback(SND_OUT_CONTAINER *buf,I64)
+{
+    U8 *stream = buf;
+    I64 num_samples = SND_BUF_LEN;
+    U8 is_stereo = Cond(SND_OCHANNELS == 2, 1, 0);
+    I64 i;
+
+    for(i=num_samples;i > 0;)
+    {
+        if(delay_counter == 0)
+        {
+            adlib_write(music_data[adlib_instruction_position*ADLIB_OP_SIZE], music_data[adlib_instruction_position*ADLIB_OP_SIZE+1]);
+            delay_counter = get_delay(adlib_instruction_position);
+            adlib_instruction_position++;
+            if(adlib_instruction_position * ADLIB_OP_SIZE >= music_data_length)
+            {
+                adlib_instruction_position = 0;
+            }
+        }
+        if(delay_counter > i)
+        {
+            delay_counter -= i;
+            adlib_getsample(stream, i, is_stereo);
+            return;
+        }
+        if(delay_counter <= i)
+        {
+            i -= delay_counter;
+            adlib_getsample(stream, delay_counter, is_stereo);
+            stream += delay_counter * SND_OCHANNELS * SND_SAMPLE_BITS/8;
+            delay_counter = 0;
+        }
+    }
+}
+
+U0 play_music()
+{
+    fp_snd_fill_buf=&music_callback;
+}
+
+U0 stop_music()
+{
+    fp_snd_fill_buf=&HDFillBuf;
+}
+
+U0 load_music(U16 new_music_index)
+{
+    adlib_instruction_position = 0;
+    delay_counter = 0;
+
+    if(music_index == new_music_index)
+    {
+        play_music();
+        return;
+    }
+
+    if(music_index != -1)
+    {
+        Free(music_data);
+    }
+
+    music_index = new_music_index;
+    music_data = load_file_in_new_buf(music_filename_tbl[music_index], &music_data_length);
+
+    play_music();
+}
+
+U0 music_init()
+{
+    adlib_init(SND_SAMPLE_RATE);
+}
+ 

Run.HC

@@ -7,6 +7,10 @@
 #include "Input";
 #include "Tile";
 
+#include "HDAudio";
+#include "Opl";
+#include "Music";
+
 #include "Font";
 #include "Status";