Mercurial > vba-clojure

     1 #ifdef WIN32

     2 #   include "../win32/stdafx.h"

     3 #   include "../win32/VBA.h"

     4 #endif

     5 

     6 #include <cstring>

     7 #include <cassert>

     8 #include <stdio.h>

     9 

    10 #include "../common/System.h"

    11 #include "../common/Util.h"

    12 //#include "../Blip_Buffer.h"

    13 #include "gbGlobals.h"

    14 #include "gbSound.h"

    15 

    16 #ifndef countof

    17 #define countof(a)  (sizeof(a) / sizeof(a[0]))

    18 #endif

    19 

    20 extern u8	 soundBuffer[6][735];

    21 extern u16	 soundFinalWave[1470];

    22 extern u16	 soundFrameSound[735 * 30 * 2];

    23 extern int32 soundVolume;

    24 

    25 soundtick_t GB_USE_TICKS_AS = 24; // (1048576.0/44100.0); // FIXME: (4194304.0/70224.0)(fps) vs 60.0fps?

    26 

    27 #define SOUND_MAGIC   0x60000000

    28 #define SOUND_MAGIC_2 0x30000000

    29 #define NOISE_MAGIC   (2097152.0 / 44100.0)

    30 

    31 extern int32 speed;

    32 

    33 extern u8 soundWavePattern[4][32];

    34 

    35 extern u32		   soundBufferLen;

    36 extern u32		   soundBufferTotalLen;

    37 extern int32	   soundQuality;

    38 extern int32	   soundPaused;

    39 extern int32	   soundPlay;

    40 extern soundtick_t soundTicks;

    41 extern soundtick_t SOUND_CLOCK_TICKS;

    42 extern u32		   soundNextPosition;

    43 

    44 extern int32 soundLevel1;

    45 extern int32 soundLevel2;

    46 extern int32 soundBalance;

    47 extern int32 soundMasterOn;

    48 extern u32	 soundIndex;

    49 extern u32	 soundBufferIndex;

    50 extern int32 soundFrameSoundWritten;

    51 int32		 soundVIN = 0;

    52 extern int32 soundDebug;

    53 

    54 extern int32 sound1On;

    55 extern int32 sound1ATL;

    56 extern int32 sound1Skip;

    57 extern int32 sound1Index;

    58 extern int32 sound1Continue;

    59 extern int32 sound1EnvelopeVolume;

    60 extern int32 sound1EnvelopeATL;

    61 extern int32 sound1EnvelopeUpDown;

    62 extern int32 sound1EnvelopeATLReload;

    63 extern int32 sound1SweepATL;

    64 extern int32 sound1SweepATLReload;

    65 extern int32 sound1SweepSteps;

    66 extern int32 sound1SweepUpDown;

    67 extern int32 sound1SweepStep;

    68 extern u8 *	 sound1Wave;

    69 

    70 extern int32 sound2On;

    71 extern int32 sound2ATL;

    72 extern int32 sound2Skip;

    73 extern int32 sound2Index;

    74 extern int32 sound2Continue;

    75 extern int32 sound2EnvelopeVolume;

    76 extern int32 sound2EnvelopeATL;

    77 extern int32 sound2EnvelopeUpDown;

    78 extern int32 sound2EnvelopeATLReload;

    79 extern u8 *	 sound2Wave;

    80 

    81 extern int32 sound3On;

    82 extern int32 sound3ATL;

    83 extern int32 sound3Skip;

    84 extern int32 sound3Index;

    85 extern int32 sound3Continue;

    86 extern int32 sound3OutputLevel;

    87 extern int32 sound3Last;

    88 

    89 extern int32 sound4On;

    90 extern int32 sound4Clock;

    91 extern int32 sound4ATL;

    92 extern int32 sound4Skip;

    93 extern int32 sound4Index;

    94 extern int32 sound4ShiftRight;

    95 extern int32 sound4ShiftSkip;

    96 extern int32 sound4ShiftIndex;

    97 extern int32 sound4NSteps;

    98 extern int32 sound4CountDown;

    99 extern int32 sound4Continue;

   100 extern int32 sound4EnvelopeVolume;

   101 extern int32 sound4EnvelopeATL;

   102 extern int32 sound4EnvelopeUpDown;

   103 extern int32 sound4EnvelopeATLReload;

   104 

   105 extern int32 soundEnableFlag;

   106 extern int32 soundMutedFlag;

   107 

   108 extern int32 soundFreqRatio[8];

   109 extern int32 soundShiftClock[16];

   110 

   111 extern s16	 soundFilter[4000];

   112 extern s16	 soundLeft[5];

   113 extern s16	 soundRight[5];

   114 extern int32 soundEchoIndex;

   115 extern bool8 soundEcho;

   116 extern bool8 soundLowPass;

   117 extern bool8 soundReverse;

   118 extern bool8 soundOffFlag;

   119 

   120 bool8 gbDigitalSound = false;

   121 

   122 void gbSoundEvent(register u16 address, register int data)

   123 {

   124 	int freq = 0;

   125 

   126 	gbMemory[address] = data;

   127 

   128 #ifndef FINAL_VERSION

   129 	if (soundDebug)

   130 	{

   131 		// don't translate. debug only

   132 		log("Sound event: %08lx %02x\n", address, data);

   133 	}

   134 #endif

   135 	switch (address)

   136 	{

   137 	case NR10:

   138 		sound1SweepATL	  = sound1SweepATLReload = 344 * ((data >> 4) & 7);

   139 		sound1SweepSteps  = data & 7;

   140 		sound1SweepUpDown = data & 0x08;

   141 		sound1SweepStep	  = 0;

   142 		break;

   143 	case NR11:

   144 		sound1Wave = soundWavePattern[data >> 6];

   145 		sound1ATL  = 172 * (64 - (data & 0x3f));

   146 		break;

   147 	case NR12:

   148 		sound1EnvelopeVolume	= data >> 4;

   149 		sound1EnvelopeUpDown	= data & 0x08;

   150 		sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (data & 7);

   151 		break;

   152 	case NR13:

   153 		freq	  = (((int)(gbMemory[NR14] & 7)) << 8) | data;

   154 		sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));

   155 		freq	  = 2048 - freq;

   156 		if (freq)

   157 		{

   158 			sound1Skip = SOUND_MAGIC / freq;

   159 		}

   160 		else

   161 			sound1Skip = 0;

   162 		break;

   163 	case NR14:

   164 		freq = (((int)(data & 7) << 8) | gbMemory[NR13]);

   165 		freq = 2048 - freq;

   166 		sound1ATL	   = 172 * (64 - (gbMemory[NR11] & 0x3f));

   167 		sound1Continue = data & 0x40;

   168 		if (freq)

   169 		{

   170 			sound1Skip = SOUND_MAGIC / freq;

   171 		}

   172 		else

   173 			sound1Skip = 0;

   174 		if (data & 0x80)

   175 		{

   176 			gbMemory[NR52]		|= 1;

   177 			sound1EnvelopeVolume = gbMemory[NR12] >> 4;

   178 			sound1EnvelopeUpDown = gbMemory[NR12] & 0x08;

   179 			sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));

   180 			sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (gbMemory[NR12] & 7);

   181 			sound1SweepATL			= sound1SweepATLReload = 344 * ((gbMemory[NR10] >> 4) & 7);

   182 			sound1SweepSteps		= gbMemory[NR10] & 7;

   183 			sound1SweepUpDown		= gbMemory[NR10] & 0x08;

   184 			sound1SweepStep			= 0;

   185 

   186 			sound1Index = 0;

   187 			sound1On	= 1;

   188 		}

   189 		break;

   190 	case NR21:

   191 		sound2Wave = soundWavePattern[data >> 6];

   192 		sound2ATL  = 172 * (64 - (data & 0x3f));

   193 		break;

   194 	case NR22:

   195 		sound2EnvelopeVolume	= data >> 4;

   196 		sound2EnvelopeUpDown	= data & 0x08;

   197 		sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (data & 7);

   198 		break;

   199 	case NR23:

   200 		freq	  = (((int)(gbMemory[NR24] & 7)) << 8) | data;

   201 		sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));

   202 		freq	  = 2048 - freq;

   203 		if (freq)

   204 		{

   205 			sound2Skip = SOUND_MAGIC / freq;

   206 		}

   207 		else

   208 			sound2Skip = 0;

   209 		break;

   210 	case NR24:

   211 		freq = (((int)(data & 7) << 8) | gbMemory[NR23]);

   212 		freq = 2048 - freq;

   213 		sound2ATL	   = 172 * (64 - (gbMemory[NR21] & 0x3f));

   214 		sound2Continue = data & 0x40;

   215 		if (freq)

   216 		{

   217 			sound2Skip = SOUND_MAGIC / freq;

   218 		}

   219 		else

   220 			sound2Skip = 0;

   221 		if (data & 0x80)

   222 		{

   223 			gbMemory[NR52]		|= 2;

   224 			sound2EnvelopeVolume = gbMemory[NR22] >> 4;

   225 			sound2EnvelopeUpDown = gbMemory[NR22] & 0x08;

   226 			sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));

   227 			sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (gbMemory[NR22] & 7);

   228 

   229 			sound2Index = 0;

   230 			sound2On	= 1;

   231 		}

   232 		break;

   233 	case NR30:

   234 		if (!(data & 0x80))

   235 		{

   236 			gbMemory[NR52] &= 0xfb;

   237 			sound3On		= 0;

   238 		}

   239 		break;

   240 	case NR31:

   241 		sound3ATL = 172 * (256 - data);

   242 		break;

   243 	case NR32:

   244 		sound3OutputLevel = (data >> 5) & 3;

   245 		break;

   246 	case NR33:

   247 		freq = 2048 - (((int)(gbMemory[NR34] & 7) << 8) | data);

   248 		if (freq)

   249 		{

   250 			sound3Skip = SOUND_MAGIC_2 / freq;

   251 		}

   252 		else

   253 			sound3Skip = 0;

   254 		break;

   255 	case NR34:

   256 		freq = 2048 - (((data & 7) << 8) | (int)gbMemory[NR33]);

   257 		if (freq)

   258 		{

   259 			sound3Skip = SOUND_MAGIC_2 / freq;

   260 		}

   261 		else

   262 		{

   263 			sound3Skip = 0;

   264 		}

   265 		sound3Continue = data & 0x40;

   266 		if ((data & 0x80) && (gbMemory[NR30] & 0x80))

   267 		{

   268 			gbMemory[NR52] |= 4;

   269 			sound3ATL		= 172 * (256 - gbMemory[NR31]);

   270 			sound3Index		= 0;

   271 			sound3On		= 1;

   272 		}

   273 		break;

   274 	case NR41:

   275 		sound4ATL = 172 * (64 - (data & 0x3f));

   276 		break;

   277 	case NR42:

   278 		sound4EnvelopeVolume	= data >> 4;

   279 		sound4EnvelopeUpDown	= data & 0x08;

   280 		sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (data & 7);

   281 		break;

   282 	case NR43:

   283 		freq		 = soundFreqRatio[data & 7];

   284 		sound4NSteps = data & 0x08;

   285 

   286 		sound4Skip = freq * NOISE_MAGIC;

   287 

   288 		sound4Clock = data >> 4;

   289 

   290 		freq = freq / soundShiftClock[sound4Clock];

   291 

   292 		sound4ShiftSkip = freq * NOISE_MAGIC;

   293 

   294 		break;

   295 	case NR44:

   296 		sound4Continue = data & 0x40;

   297 		if (data & 0x80)

   298 		{

   299 			gbMemory[NR52]		|= 8;

   300 			sound4EnvelopeVolume = gbMemory[NR42] >> 4;

   301 			sound4EnvelopeUpDown = gbMemory[NR42] & 0x08;

   302 			sound4ATL = 172 * (64 - (gbMemory[NR41] & 0x3f));

   303 			sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (gbMemory[NR42] & 7);

   304 

   305 			sound4On = 1;

   306 

   307 			sound4Index		 = 0;

   308 			sound4ShiftIndex = 0;

   309 

   310 			freq = soundFreqRatio[gbMemory[NR43] & 7];

   311 

   312 			sound4Skip = freq * NOISE_MAGIC;

   313 

   314 			sound4NSteps = gbMemory[NR43] & 0x08;

   315 

   316 			freq = freq / soundShiftClock[gbMemory[NR43] >> 4];

   317 

   318 			sound4ShiftSkip = freq * NOISE_MAGIC;

   319 			if (sound4NSteps)

   320 				sound4ShiftRight = 0x7f;

   321 			else

   322 				sound4ShiftRight = 0x7fff;

   323 		}

   324 		break;

   325 	case NR50:

   326 		soundVIN	= data & 0x88;

   327 		soundLevel1 = data & 7;

   328 		soundLevel2 = (data >> 4) & 7;

   329 		break;

   330 	case NR51:

   331 		soundBalance	  = (data & soundEnableFlag);

   332 		gbMemory[address] = data;

   333 		break;

   334 	case NR52:

   335 		soundMasterOn = data & 0x80;

   336 		if (!(data & 0x80))

   337 		{

   338 			sound1On = 0;

   339 			sound2On = 0;

   340 			sound3On = 0;

   341 			sound4On = 0;

   342 		}

   343 		break;

   344 	}

   345 

   346 	gbDigitalSound = true;

   347 

   348 	if (sound1On && sound1EnvelopeVolume != 0)

   349 		gbDigitalSound = false;

   350 	if (sound2On && sound2EnvelopeVolume != 0)

   351 		gbDigitalSound = false;

   352 	if (sound3On && sound3OutputLevel != 0)

   353 		gbDigitalSound = false;

   354 	if (sound4On && sound4EnvelopeVolume != 0)

   355 		gbDigitalSound = false;

   356 }

   357 

   358 void gbSoundChannel1()

   359 {

   360 	int vol = sound1EnvelopeVolume;

   361 

   362 	int freq = 0;

   363 

   364 	int value = 0;

   365 

   366 	if (sound1On && (sound1ATL || !sound1Continue))

   367 	{

   368 		sound1Index += soundQuality * sound1Skip;

   369 		sound1Index &= 0x1fffffff;

   370 

   371 		value = ((s8)sound1Wave[sound1Index >> 24]) * vol;

   372 	}

   373 

   374 	soundBuffer[0][soundIndex] = value;

   375 

   376 	if (sound1On)

   377 	{

   378 		if (sound1ATL)

   379 		{

   380 			sound1ATL -= soundQuality;

   381 

   382 			if (sound1ATL <= 0 && sound1Continue)

   383 			{

   384 				gbMemory[NR52] &= 0xfe;

   385 				sound1On		= 0;

   386 			}

   387 		}

   388 

   389 		if (sound1EnvelopeATL)

   390 		{

   391 			sound1EnvelopeATL -= soundQuality;

   392 

   393 			if (sound1EnvelopeATL <= 0)

   394 			{

   395 				if (sound1EnvelopeUpDown)

   396 				{

   397 					if (sound1EnvelopeVolume < 15)

   398 						sound1EnvelopeVolume++;

   399 				}

   400 				else

   401 				{

   402 					if (sound1EnvelopeVolume)

   403 						sound1EnvelopeVolume--;

   404 				}

   405 

   406 				sound1EnvelopeATL += sound1EnvelopeATLReload;

   407 			}

   408 		}

   409 

   410 		if (sound1SweepATL)

   411 		{

   412 			sound1SweepATL -= soundQuality;

   413 

   414 			if (sound1SweepATL <= 0)

   415 			{

   416 				freq = (((int)(gbMemory[NR14] & 7) << 8) | gbMemory[NR13]);

   417 

   418 				int updown = 1;

   419 

   420 				if (sound1SweepUpDown)

   421 					updown = -1;

   422 

   423 				int newfreq = 0;

   424 				if (sound1SweepSteps)

   425 				{

   426 					newfreq = freq + updown * freq / (1 << sound1SweepSteps);

   427 					if (newfreq == freq)

   428 						newfreq = 0;

   429 				}

   430 				else

   431 					newfreq = freq;

   432 

   433 				if (newfreq < 0)

   434 				{

   435 					sound1SweepATL += sound1SweepATLReload;

   436 				}

   437 				else if (newfreq > 2047)

   438 				{

   439 					sound1SweepATL	= 0;

   440 					sound1On		= 0;

   441 					gbMemory[NR52] &= 0xfe;

   442 				}

   443 				else

   444 				{

   445 					sound1SweepATL += sound1SweepATLReload;

   446 					sound1Skip		= SOUND_MAGIC / (2048 - newfreq);

   447 

   448 					gbMemory[NR13] = newfreq & 0xff;

   449 					gbMemory[NR14] = (gbMemory[NR14] & 0xf8) | ((newfreq >> 8) & 7);

   450 				}

   451 			}

   452 		}

   453 	}

   454 }

   455 

   456 void gbSoundChannel2()

   457 {

   458 	//  int freq = 0;

   459 	int vol = sound2EnvelopeVolume;

   460 

   461 	int value = 0;

   462 

   463 	if (sound2On && (sound2ATL || !sound2Continue))

   464 	{

   465 		sound2Index += soundQuality * sound2Skip;

   466 		sound2Index &= 0x1fffffff;

   467 

   468 		value = ((s8)sound2Wave[sound2Index >> 24]) * vol;

   469 	}

   470 

   471 	soundBuffer[1][soundIndex] = value;

   472 

   473 	if (sound2On)

   474 	{

   475 		if (sound2ATL)

   476 		{

   477 			sound2ATL -= soundQuality;

   478 

   479 			if (sound2ATL <= 0 && sound2Continue)

   480 			{

   481 				gbMemory[NR52] &= 0xfd;

   482 				sound2On		= 0;

   483 			}

   484 		}

   485 

   486 		if (sound2EnvelopeATL)

   487 		{

   488 			sound2EnvelopeATL -= soundQuality;

   489 

   490 			if (sound2EnvelopeATL <= 0)

   491 			{

   492 				if (sound2EnvelopeUpDown)

   493 				{

   494 					if (sound2EnvelopeVolume < 15)

   495 						sound2EnvelopeVolume++;

   496 				}

   497 				else

   498 				{

   499 					if (sound2EnvelopeVolume)

   500 						sound2EnvelopeVolume--;

   501 				}

   502 				sound2EnvelopeATL += sound2EnvelopeATLReload;

   503 			}

   504 		}

   505 	}

   506 }

   507 

   508 void gbSoundChannel3()

   509 {

   510 	int value = sound3Last;

   511 

   512 	if (sound3On && (sound3ATL || !sound3Continue))

   513 	{

   514 		sound3Index += soundQuality * sound3Skip;

   515 		sound3Index &= 0x1fffffff;

   516 

   517 		value = gbMemory[0xff30 + (sound3Index >> 25)];

   518 

   519 		if ((sound3Index & 0x01000000))

   520 		{

   521 			value &= 0x0f;

   522 		}

   523 		else

   524 		{

   525 			value >>= 4;

   526 		}

   527 

   528 		value -= 8;

   529 		value *= 2;

   530 

   531 		switch (sound3OutputLevel)

   532 		{

   533 		case 0:

   534 			value = 0;

   535 			break;

   536 		case 1:

   537 			break;

   538 		case 2:

   539 			value = (value >> 1);

   540 			break;

   541 		case 3:

   542 			value = (value >> 2);

   543 			break;

   544 		}

   545 		//value += 1;

   546 		sound3Last = value;

   547 	}

   548 

   549 	soundBuffer[2][soundIndex] = value;

   550 

   551 	if (sound3On)

   552 	{

   553 		if (sound3ATL)

   554 		{

   555 			sound3ATL -= soundQuality;

   556 

   557 			if (sound3ATL <= 0 && sound3Continue)

   558 			{

   559 				gbMemory[NR52] &= 0xfb;

   560 				sound3On		= 0;

   561 			}

   562 		}

   563 	}

   564 }

   565 

   566 void gbSoundChannel4()

   567 {

   568 	int vol = sound4EnvelopeVolume;

   569 

   570 	int value = 0;

   571 

   572 	if (sound4Clock <= 0x0c)

   573 	{

   574 		if (sound4On && (sound4ATL || !sound4Continue))

   575 		{

   576 	  #define NOISE_ONE_SAMP_SCALE  0x200000

   577 

   578 			sound4Index		 += soundQuality * sound4Skip;

   579 			sound4ShiftIndex += soundQuality * sound4ShiftSkip;

   580 

   581 			if (sound4NSteps)

   582 			{

   583 				while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)

   584 				{

   585 					sound4ShiftRight = (((sound4ShiftRight << 6) ^

   586 					                     (sound4ShiftRight << 5)) & 0x40) |

   587 					                   (sound4ShiftRight >> 1);

   588 					sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;

   589 				}

   590 			}

   591 			else

   592 			{

   593 				while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)

   594 				{

   595 					sound4ShiftRight = (((sound4ShiftRight << 14) ^

   596 					                     (sound4ShiftRight << 13)) & 0x4000) |

   597 					                   (sound4ShiftRight >> 1);

   598 

   599 					sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;

   600 				}

   601 			}

   602 

   603 			sound4Index		 %= NOISE_ONE_SAMP_SCALE;

   604 			sound4ShiftIndex %= NOISE_ONE_SAMP_SCALE;

   605 

   606 			value = ((sound4ShiftRight & 1) * 2 - 1) * vol;

   607 		}

   608 		else

   609 		{

   610 			value = 0;

   611 		}

   612 	}

   613 

   614 	soundBuffer[3][soundIndex] = value;

   615 

   616 	if (sound4On)

   617 	{

   618 		if (sound4ATL)

   619 		{

   620 			sound4ATL -= soundQuality;

   621 

   622 			if (sound4ATL <= 0 && sound4Continue)

   623 			{

   624 				gbMemory[NR52] &= 0xfd;

   625 				sound4On		= 0;

   626 			}

   627 		}

   628 

   629 		if (sound4EnvelopeATL)

   630 		{

   631 			sound4EnvelopeATL -= soundQuality;

   632 

   633 			if (sound4EnvelopeATL <= 0)

   634 			{

   635 				if (sound4EnvelopeUpDown)

   636 				{

   637 					if (sound4EnvelopeVolume < 15)

   638 						sound4EnvelopeVolume++;

   639 				}

   640 				else

   641 				{

   642 					if (sound4EnvelopeVolume)

   643 						sound4EnvelopeVolume--;

   644 				}

   645 				sound4EnvelopeATL += sound4EnvelopeATLReload;

   646 			}

   647 		}

   648 	}

   649 }

   650 

   651 void gbSoundMix()

   652 {

   653 	int res = 0;

   654 

   655 	if (gbMemory)

   656 		soundBalance = (gbMemory[NR51] & soundEnableFlag & ~soundMutedFlag);

   657 

   658 	if (soundBalance & 16)

   659 	{

   660 		res += ((s8)soundBuffer[0][soundIndex]);

   661 	}

   662 	if (soundBalance & 32)

   663 	{

   664 		res += ((s8)soundBuffer[1][soundIndex]);

   665 	}

   666 	if (soundBalance & 64)

   667 	{

   668 		res += ((s8)soundBuffer[2][soundIndex]);

   669 	}

   670 	if (soundBalance & 128)

   671 	{

   672 		res += ((s8)soundBuffer[3][soundIndex]);

   673 	}

   674 

   675 	if (gbDigitalSound)

   676 		res = soundLevel1 * 256;

   677 	else

   678 		res *= soundLevel1 * 60;

   679 

   680 	if (soundEcho)

   681 	{

   682 		res *= 2;

   683 		res += soundFilter[soundEchoIndex];

   684 		res /= 2;

   685 		soundFilter[soundEchoIndex++] = res;

   686 	}

   687 

   688 	if (soundLowPass)

   689 	{

   690 		soundLeft[4] = soundLeft[3];

   691 		soundLeft[3] = soundLeft[2];

   692 		soundLeft[2] = soundLeft[1];

   693 		soundLeft[1] = soundLeft[0];

   694 		soundLeft[0] = res;

   695 		res = (soundLeft[4] + 2 * soundLeft[3] + 8 * soundLeft[2] + 2 * soundLeft[1] +

   696 		       soundLeft[0]) / 14;

   697 	}

   698 

   699 	bool noSpecialEffects = false;

   700 #if (defined(WIN32) && !defined(SDL))

   701 	if (theApp.soundRecording || theApp.aviRecording || theApp.nvAudioLog)

   702 		noSpecialEffects = true;

   703 #endif

   704 

   705 	if (!noSpecialEffects)

   706 	{

   707 		switch (soundVolume)

   708 		{

   709 		case 0:

   710 		case 1:

   711 		case 2:

   712 		case 3:

   713 			res *= (soundVolume + 1);

   714 			break;

   715 		case 4:

   716 			res >>= 2;

   717 			break;

   718 		case 5:

   719 			res >>= 1;

   720 			break;

   721 		}

   722 	}

   723 

   724 	if (res > 32767)

   725 		res = 32767;

   726 	if (res < -32768)

   727 		res = -32768;

   728 

   729 	if (soundReverse && !noSpecialEffects)

   730 	{

   731 		soundFinalWave[++soundBufferIndex] = res;

   732 		if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))

   733 		  

   734 		  ; //printf("oh noes!\n");

   735 		else

   736 			soundFrameSound[++soundFrameSoundWritten] = res;

   737 	}

   738 	else

   739 	{

   740 		soundFinalWave[soundBufferIndex++] = res;

   741 		if (soundFrameSoundWritten >= countof(soundFrameSound))

   742 		  ; //printf("oh noes!\n");

   743 		else

   744 			soundFrameSound[soundFrameSoundWritten++] = res;

   745 	}

   746 

   747 	res = 0;

   748 

   749 	if (soundBalance & 1)

   750 	{

   751 		res += ((s8)soundBuffer[0][soundIndex]);

   752 	}

   753 	if (soundBalance & 2)

   754 	{

   755 		res += ((s8)soundBuffer[1][soundIndex]);

   756 	}

   757 	if (soundBalance & 4)

   758 	{

   759 		res += ((s8)soundBuffer[2][soundIndex]);

   760 	}

   761 	if (soundBalance & 8)

   762 	{

   763 		res += ((s8)soundBuffer[3][soundIndex]);

   764 	}

   765 

   766 	if (gbDigitalSound)

   767 		res = soundLevel2 * 256;

   768 	else

   769 		res *= soundLevel2 * 60;

   770 

   771 	if (soundEcho)

   772 	{

   773 		res *= 2;

   774 		res += soundFilter[soundEchoIndex];

   775 		res /= 2;

   776 		soundFilter[soundEchoIndex++] = res;

   777 

   778 		if (soundEchoIndex >= 4000)

   779 			soundEchoIndex = 0;

   780 	}

   781 

   782 	if (soundLowPass)

   783 	{

   784 		soundRight[4] = soundRight[3];

   785 		soundRight[3] = soundRight[2];

   786 		soundRight[2] = soundRight[1];

   787 		soundRight[1] = soundRight[0];

   788 		soundRight[0] = res;

   789 		res = (soundRight[4] + 2 * soundRight[3] + 8 * soundRight[2] + 2 * soundRight[1] +

   790 		       soundRight[0]) / 14;

   791 	}

   792 

   793 	if (!noSpecialEffects)

   794 	{

   795 		switch (soundVolume)

   796 		{

   797 		case 0:

   798 		case 1:

   799 		case 2:

   800 		case 3:

   801 			res *= (soundVolume + 1);

   802 			break;

   803 		case 4:

   804 			res >>= 2;

   805 			break;

   806 		case 5:

   807 			res >>= 1;

   808 			break;

   809 		}

   810 	}

   811 

   812 	if (res > 32767)

   813 		res = 32767;

   814 	if (res < -32768)

   815 		res = -32768;

   816 

   817 	if (soundReverse && !noSpecialEffects)

   818 	{

   819 		soundFinalWave[-1 + soundBufferIndex++]		   = res;

   820 		if ((soundFrameSoundWritten) >= countof(soundFrameSound))

   821 		  ;//printf("oh noes!\n");

   822 		else

   823 			soundFrameSound[-1 + soundFrameSoundWritten++] = res;

   824 	}

   825 	else

   826 	{

   827 		soundFinalWave[soundBufferIndex++]			  = res;

   828 		if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))

   829 		  ;//printf("oh noes!\n");

   830 		else

   831 			soundFrameSound[soundFrameSoundWritten++] = res;

   832 	}

   833 }

   834 

   835 void gbSoundTick()

   836 {

   837   if (systemSoundOn)

   838     {

   839       if (soundMasterOn)

   840 	{

   841 	  gbSoundChannel1();

   842 	  gbSoundChannel2();

   843 	  gbSoundChannel3();

   844 	  gbSoundChannel4();

   845 

   846 	  gbSoundMix();

   847 	}

   848       else

   849 	{

   850 	  soundFinalWave[soundBufferIndex++] = 0;

   851 	  soundFinalWave[soundBufferIndex++] = 0;

   852 	  if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))

   853 			  

   854 	    ;//printf("oh noes!\n");

   855 	  else

   856 	    {

   857 	      soundFrameSound[soundFrameSoundWritten++] = 0;

   858 	      soundFrameSound[soundFrameSoundWritten++] = 0;

   859 	    }

   860 	}

   861 

   862       soundIndex++;

   863 

   864       if (2 * soundBufferIndex >= soundBufferLen)

   865 	{

   866 	  if (systemSoundOn)

   867 	    {

   868 	      if (soundPaused)

   869 		{

   870 		  extern void soundResume();

   871 		  soundResume();

   872 		}

   873 

   874 	      systemSoundWriteToBuffer();

   875 	    }

   876 	  soundIndex		 = 0;

   877 	  soundBufferIndex = 0;

   878 	}

   879     }

   880 }

   881 

   882 void gbSoundReset()

   883 {

   884 	soundPaused		  = 1;

   885 	soundPlay		  = 0;

   886 	SOUND_CLOCK_TICKS = soundQuality * GB_USE_TICKS_AS;

   887 //  soundTicks = SOUND_CLOCK_TICKS;

   888 	soundTicks		  = 0;

   889 	soundNextPosition = 0;

   890 	soundMasterOn	  = 1;

   891 	soundIndex		  = 0;

   892 	soundBufferIndex  = 0;

   893 	soundLevel1		  = 7;

   894 	soundLevel2		  = 7;

   895 	soundVIN = 0;

   896 

   897 	sound1On = 0;

   898 	sound1ATL = 0;

   899 	sound1Skip = 0;

   900 	sound1Index = 0;

   901 	sound1Continue = 0;

   902 	sound1EnvelopeVolume	= 0;

   903 	sound1EnvelopeATL		= 0;

   904 	sound1EnvelopeUpDown	= 0;

   905 	sound1EnvelopeATLReload = 0;

   906 	sound1SweepATL			= 0;

   907 	sound1SweepATLReload	= 0;

   908 	sound1SweepSteps		= 0;

   909 	sound1SweepUpDown		= 0;

   910 	sound1SweepStep			= 0;

   911 	sound1Wave				= soundWavePattern[2];

   912 

   913 	sound2On = 0;

   914 	sound2ATL = 0;

   915 	sound2Skip = 0;

   916 	sound2Index = 0;

   917 	sound2Continue = 0;

   918 	sound2EnvelopeVolume	= 0;

   919 	sound2EnvelopeATL		= 0;

   920 	sound2EnvelopeUpDown	= 0;

   921 	sound2EnvelopeATLReload = 0;

   922 	sound2Wave				= soundWavePattern[2];

   923 

   924 	sound3On = 0;

   925 	sound3ATL		  = 0;

   926 	sound3Skip		  = 0;

   927 	sound3Index		  = 0;

   928 	sound3Continue	  = 0;

   929 	sound3OutputLevel = 0;

   930 

   931 	sound4On = 0;

   932 	sound4Clock = 0;

   933 	sound4ATL = 0;

   934 	sound4Skip = 0;

   935 	sound4Index = 0;

   936 	sound4ShiftRight		= 0x7f;

   937 	sound4NSteps			= 0;

   938 	sound4CountDown			= 0;

   939 	sound4Continue			= 0;

   940 	sound4EnvelopeVolume	= 0;

   941 	sound4EnvelopeATL		= 0;

   942 	sound4EnvelopeUpDown	= 0;

   943 	sound4EnvelopeATLReload = 0;

   944 

   945 	// don't translate

   946 	if (soundDebug)

   947 	{

   948 		log("*** Sound Init ***\n");

   949 	}

   950 

   951 	gbSoundEvent(0xff10, 0x80);

   952 	gbSoundEvent(0xff11, 0xbf);

   953 	gbSoundEvent(0xff12, 0xf3);

   954 	gbSoundEvent(0xff14, 0xbf);

   955 	gbSoundEvent(0xff16, 0x3f);

   956 	gbSoundEvent(0xff17, 0x00);

   957 	gbSoundEvent(0xff19, 0xbf);

   958 

   959 	gbSoundEvent(0xff1a, 0x7f);

   960 	gbSoundEvent(0xff1b, 0xff);

   961 	gbSoundEvent(0xff1c, 0xbf);

   962 	gbSoundEvent(0xff1e, 0xbf);

   963 

   964 	gbSoundEvent(0xff20, 0xff);

   965 	gbSoundEvent(0xff21, 0x00);

   966 	gbSoundEvent(0xff22, 0x00);

   967 	gbSoundEvent(0xff23, 0xbf);

   968 	gbSoundEvent(0xff24, 0x77);

   969 	gbSoundEvent(0xff25, 0xf3);

   970 

   971 	gbSoundEvent(0xff26, 0xf0);

   972 

   973 	// don't translate

   974 	if (soundDebug)

   975 	{

   976 		log("*** Sound Init Complete ***\n");

   977 	}

   978 

   979 	sound1On = 0;

   980 	sound2On = 0;

   981 	sound3On = 0;

   982 	sound4On = 0;

   983 

   984 	int addr = 0xff30;

   985 

   986 	while (addr < 0xff40)

   987 	{

   988 		gbMemory[addr++] = 0x00;

   989 		gbMemory[addr++] = 0xff;

   990 	}

   991 

   992 	memset(soundFinalWave, 0x00, soundBufferLen);

   993 

   994 	memset(soundFilter, 0, sizeof(soundFilter));

   995 	soundEchoIndex = 0;

   996 }

   997 

   998 extern bool soundInit();

   999 extern void soundShutdown();

  1000 

  1001 void gbSoundSetQuality(int quality)

  1002 {

  1003 	if (soundQuality != quality && systemSoundCanChangeQuality())

  1004 	{

  1005 		if (!soundOffFlag)

  1006 			soundShutdown();

  1007 		soundQuality	  = quality;

  1008 		soundNextPosition = 0;

  1009 		if (!soundOffFlag)

  1010 			soundInit();

  1011 		SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;

  1012 		soundIndex		  = 0;

  1013 		soundBufferIndex  = 0;

  1014 	}

  1015 	else

  1016 	{

  1017 		soundNextPosition = 0;

  1018 		SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;

  1019 		soundIndex		  = 0;

  1020 		soundBufferIndex  = 0;

  1021 	}

  1022 }

  1023 

  1024 static int32 soundTicks_int32;

  1025 static int32 SOUND_CLOCK_TICKS_int32;

  1026 variable_desc gbSoundSaveStruct[] = {

  1027 	{ &soundPaused,				sizeof(int32)					  },

  1028 	{ &soundPlay,				sizeof(int32)					  },

  1029 	{ &soundTicks_int32,		sizeof(int32)					  },

  1030 	{ &SOUND_CLOCK_TICKS_int32, sizeof(int32)					  },

  1031 	{ &soundLevel1,				sizeof(int32)					  },

  1032 	{ &soundLevel2,				sizeof(int32)					  },

  1033 	{ &soundBalance,			sizeof(int32)					  },

  1034 	{ &soundMasterOn,			sizeof(int32)					  },

  1035 	{ &soundIndex,				sizeof(int32)					  },

  1036 	{ &soundVIN,				sizeof(int32)					  },

  1037 	{ &sound1On,				sizeof(int32)					  },

  1038 	{ &sound1ATL,				sizeof(int32)					  },

  1039 	{ &sound1Skip,				sizeof(int32)					  },

  1040 	{ &sound1Index,				sizeof(int32)					  },

  1041 	{ &sound1Continue,			sizeof(int32)					  },

  1042 	{ &sound1EnvelopeVolume,	sizeof(int32)					  },

  1043 	{ &sound1EnvelopeATL,		sizeof(int32)					  },

  1044 	{ &sound1EnvelopeATLReload, sizeof(int32)					  },

  1045 	{ &sound1EnvelopeUpDown,	sizeof(int32)					  },

  1046 	{ &sound1SweepATL,			sizeof(int32)					  },

  1047 	{ &sound1SweepATLReload,	sizeof(int32)					  },

  1048 	{ &sound1SweepSteps,		sizeof(int32)					  },

  1049 	{ &sound1SweepUpDown,		sizeof(int32)					  },

  1050 	{ &sound1SweepStep,			sizeof(int32)					  },

  1051 	{ &sound2On,				sizeof(int32)					  },

  1052 	{ &sound2ATL,				sizeof(int32)					  },

  1053 	{ &sound2Skip,				sizeof(int32)					  },

  1054 	{ &sound2Index,				sizeof(int32)					  },

  1055 	{ &sound2Continue,			sizeof(int32)					  },

  1056 	{ &sound2EnvelopeVolume,	sizeof(int32)					  },

  1057 	{ &sound2EnvelopeATL,		sizeof(int32)					  },

  1058 	{ &sound2EnvelopeATLReload, sizeof(int32)					  },

  1059 	{ &sound2EnvelopeUpDown,	sizeof(int32)					  },

  1060 	{ &sound3On,				sizeof(int32)					  },

  1061 	{ &sound3ATL,				sizeof(int32)					  },

  1062 	{ &sound3Skip,				sizeof(int32)					  },

  1063 	{ &sound3Index,				sizeof(int32)					  },

  1064 	{ &sound3Continue,			sizeof(int32)					  },

  1065 	{ &sound3OutputLevel,		sizeof(int32)					  },

  1066 	{ &sound4On,				sizeof(int32)					  },

  1067 	{ &sound4ATL,				sizeof(int32)					  },

  1068 	{ &sound4Skip,				sizeof(int32)					  },

  1069 	{ &sound4Index,				sizeof(int32)					  },

  1070 	{ &sound4Clock,				sizeof(int32)					  },

  1071 	{ &sound4ShiftRight,		sizeof(int32)					  },

  1072 	{ &sound4ShiftSkip,			sizeof(int32)					  },

  1073 	{ &sound4ShiftIndex,		sizeof(int32)					  },

  1074 	{ &sound4NSteps,			sizeof(int32)					  },

  1075 	{ &sound4CountDown,			sizeof(int32)					  },

  1076 	{ &sound4Continue,			sizeof(int32)					  },

  1077 	{ &sound4EnvelopeVolume,	sizeof(int32)					  },

  1078 	{ &sound4EnvelopeATL,		sizeof(int32)					  },

  1079 	{ &sound4EnvelopeATLReload, sizeof(int32)					  },

  1080 	{ &sound4EnvelopeUpDown,	sizeof(int32)					  },

  1081 	{ &soundEnableFlag,			sizeof(int32)					  },

  1082 	{ NULL,						0								  }

  1083 };

  1084 

  1085 //variable_desc gbSoundSaveStructV2[] = {

  1086 //  { &soundTicks, sizeof(soundtick_t) },

  1087 //  { &SOUND_CLOCK_TICKS, sizeof(soundtick_t) },

  1088 //  { &GB_USE_TICKS_AS, sizeof(soundtick_t) },

  1089 //  { NULL, 0 }

  1090 //};

  1091 

  1092 void gbSoundSaveGame(gzFile gzFile)

  1093 {

  1094 	soundTicks_int32		= (int32) soundTicks;

  1095 	SOUND_CLOCK_TICKS_int32 = (int32) SOUND_CLOCK_TICKS;

  1096 

  1097 	utilWriteData(gzFile, gbSoundSaveStruct);

  1098 

  1099 	utilGzWrite(gzFile, soundBuffer, 4 * 735);

  1100 	utilGzWrite(gzFile, soundFinalWave, 2 * 735);

  1101 	utilGzWrite(gzFile, &soundQuality, sizeof(int32));

  1102 

  1103 	//utilWriteData(gzFile, gbSoundSaveStructV2);

  1104 }

  1105 

  1106 void gbSoundReadGame(int version, gzFile gzFile)

  1107 {

  1108 	int32 oldSoundPaused = soundPaused;

  1109 	int32 oldSoundEnableFlag = soundEnableFlag;

  1110 	utilReadData(gzFile, gbSoundSaveStruct);

  1111 	soundPaused = oldSoundPaused;

  1112 	soundEnableFlag = oldSoundEnableFlag;

  1113 

  1114 	soundBufferIndex = soundIndex * 2;

  1115 

  1116 	utilGzRead(gzFile, soundBuffer, 4 * 735);

  1117 	utilGzRead(gzFile, soundFinalWave, 2 * 735);

  1118 

  1119 	if (version >= 7)

  1120 	{

  1121 		int quality = 1;

  1122 		utilGzRead(gzFile, &quality, sizeof(int32));

  1123 		gbSoundSetQuality(quality);

  1124 	}

  1125 	else

  1126 	{

  1127 		soundQuality = -1;

  1128 		gbSoundSetQuality(1);

  1129 	}

  1130 

  1131 	sound1Wave = soundWavePattern[gbMemory[NR11] >> 6];

  1132 	sound2Wave = soundWavePattern[gbMemory[NR21] >> 6];

  1133 

  1134 	//if(version >= 14) {

  1135 	//  utilReadData(gzFile, gbSoundSaveStructV2);

  1136 	//}

  1137 	//else {

  1138 	soundTicks		  = (soundtick_t) soundTicks_int32;

  1139 	SOUND_CLOCK_TICKS = (soundtick_t) SOUND_CLOCK_TICKS_int32;

  1140 	//}

  1141 }

  1142
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 01 Sep 2012 03:56:30 -0500
parents	fa7676dbf6f2
children