diff src/gb/gbSound.cpp @ 1:f9f4f1b99eed

importing src directory
author Robert McIntyre <rlm@mit.edu>
date Sat, 03 Mar 2012 10:31:27 -0600
parents
children
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     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/gb/gbSound.cpp	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,1139 @@
     1.4 +#ifdef WIN32
     1.5 +#   include "../win32/stdafx.h"
     1.6 +#   include "../win32/VBA.h"
     1.7 +#endif
     1.8 +
     1.9 +#include <cstring>
    1.10 +#include <cassert>
    1.11 +
    1.12 +#include "../common/System.h"
    1.13 +#include "../common/Util.h"
    1.14 +//#include "../Blip_Buffer.h"
    1.15 +#include "gbGlobals.h"
    1.16 +#include "gbSound.h"
    1.17 +
    1.18 +#ifndef countof
    1.19 +#define countof(a)  (sizeof(a) / sizeof(a[0]))
    1.20 +#endif
    1.21 +
    1.22 +extern u8	 soundBuffer[6][735];
    1.23 +extern u16	 soundFinalWave[1470];
    1.24 +extern u16	 soundFrameSound[735 * 30 * 2];
    1.25 +extern int32 soundVolume;
    1.26 +
    1.27 +soundtick_t GB_USE_TICKS_AS = 24; // (1048576.0/44100.0); // FIXME: (4194304.0/70224.0)(fps) vs 60.0fps?
    1.28 +
    1.29 +#define SOUND_MAGIC   0x60000000
    1.30 +#define SOUND_MAGIC_2 0x30000000
    1.31 +#define NOISE_MAGIC   (2097152.0 / 44100.0)
    1.32 +
    1.33 +extern int32 speed;
    1.34 +
    1.35 +extern u8 soundWavePattern[4][32];
    1.36 +
    1.37 +extern u32		   soundBufferLen;
    1.38 +extern u32		   soundBufferTotalLen;
    1.39 +extern int32	   soundQuality;
    1.40 +extern int32	   soundPaused;
    1.41 +extern int32	   soundPlay;
    1.42 +extern soundtick_t soundTicks;
    1.43 +extern soundtick_t SOUND_CLOCK_TICKS;
    1.44 +extern u32		   soundNextPosition;
    1.45 +
    1.46 +extern int32 soundLevel1;
    1.47 +extern int32 soundLevel2;
    1.48 +extern int32 soundBalance;
    1.49 +extern int32 soundMasterOn;
    1.50 +extern u32	 soundIndex;
    1.51 +extern u32	 soundBufferIndex;
    1.52 +extern int32 soundFrameSoundWritten;
    1.53 +int32		 soundVIN = 0;
    1.54 +extern int32 soundDebug;
    1.55 +
    1.56 +extern int32 sound1On;
    1.57 +extern int32 sound1ATL;
    1.58 +extern int32 sound1Skip;
    1.59 +extern int32 sound1Index;
    1.60 +extern int32 sound1Continue;
    1.61 +extern int32 sound1EnvelopeVolume;
    1.62 +extern int32 sound1EnvelopeATL;
    1.63 +extern int32 sound1EnvelopeUpDown;
    1.64 +extern int32 sound1EnvelopeATLReload;
    1.65 +extern int32 sound1SweepATL;
    1.66 +extern int32 sound1SweepATLReload;
    1.67 +extern int32 sound1SweepSteps;
    1.68 +extern int32 sound1SweepUpDown;
    1.69 +extern int32 sound1SweepStep;
    1.70 +extern u8 *	 sound1Wave;
    1.71 +
    1.72 +extern int32 sound2On;
    1.73 +extern int32 sound2ATL;
    1.74 +extern int32 sound2Skip;
    1.75 +extern int32 sound2Index;
    1.76 +extern int32 sound2Continue;
    1.77 +extern int32 sound2EnvelopeVolume;
    1.78 +extern int32 sound2EnvelopeATL;
    1.79 +extern int32 sound2EnvelopeUpDown;
    1.80 +extern int32 sound2EnvelopeATLReload;
    1.81 +extern u8 *	 sound2Wave;
    1.82 +
    1.83 +extern int32 sound3On;
    1.84 +extern int32 sound3ATL;
    1.85 +extern int32 sound3Skip;
    1.86 +extern int32 sound3Index;
    1.87 +extern int32 sound3Continue;
    1.88 +extern int32 sound3OutputLevel;
    1.89 +extern int32 sound3Last;
    1.90 +
    1.91 +extern int32 sound4On;
    1.92 +extern int32 sound4Clock;
    1.93 +extern int32 sound4ATL;
    1.94 +extern int32 sound4Skip;
    1.95 +extern int32 sound4Index;
    1.96 +extern int32 sound4ShiftRight;
    1.97 +extern int32 sound4ShiftSkip;
    1.98 +extern int32 sound4ShiftIndex;
    1.99 +extern int32 sound4NSteps;
   1.100 +extern int32 sound4CountDown;
   1.101 +extern int32 sound4Continue;
   1.102 +extern int32 sound4EnvelopeVolume;
   1.103 +extern int32 sound4EnvelopeATL;
   1.104 +extern int32 sound4EnvelopeUpDown;
   1.105 +extern int32 sound4EnvelopeATLReload;
   1.106 +
   1.107 +extern int32 soundEnableFlag;
   1.108 +extern int32 soundMutedFlag;
   1.109 +
   1.110 +extern int32 soundFreqRatio[8];
   1.111 +extern int32 soundShiftClock[16];
   1.112 +
   1.113 +extern s16	 soundFilter[4000];
   1.114 +extern s16	 soundLeft[5];
   1.115 +extern s16	 soundRight[5];
   1.116 +extern int32 soundEchoIndex;
   1.117 +extern bool8 soundEcho;
   1.118 +extern bool8 soundLowPass;
   1.119 +extern bool8 soundReverse;
   1.120 +extern bool8 soundOffFlag;
   1.121 +
   1.122 +bool8 gbDigitalSound = false;
   1.123 +
   1.124 +void gbSoundEvent(register u16 address, register int data)
   1.125 +{
   1.126 +	int freq = 0;
   1.127 +
   1.128 +	gbMemory[address] = data;
   1.129 +
   1.130 +#ifndef FINAL_VERSION
   1.131 +	if (soundDebug)
   1.132 +	{
   1.133 +		// don't translate. debug only
   1.134 +		log("Sound event: %08lx %02x\n", address, data);
   1.135 +	}
   1.136 +#endif
   1.137 +	switch (address)
   1.138 +	{
   1.139 +	case NR10:
   1.140 +		sound1SweepATL	  = sound1SweepATLReload = 344 * ((data >> 4) & 7);
   1.141 +		sound1SweepSteps  = data & 7;
   1.142 +		sound1SweepUpDown = data & 0x08;
   1.143 +		sound1SweepStep	  = 0;
   1.144 +		break;
   1.145 +	case NR11:
   1.146 +		sound1Wave = soundWavePattern[data >> 6];
   1.147 +		sound1ATL  = 172 * (64 - (data & 0x3f));
   1.148 +		break;
   1.149 +	case NR12:
   1.150 +		sound1EnvelopeVolume	= data >> 4;
   1.151 +		sound1EnvelopeUpDown	= data & 0x08;
   1.152 +		sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (data & 7);
   1.153 +		break;
   1.154 +	case NR13:
   1.155 +		freq	  = (((int)(gbMemory[NR14] & 7)) << 8) | data;
   1.156 +		sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));
   1.157 +		freq	  = 2048 - freq;
   1.158 +		if (freq)
   1.159 +		{
   1.160 +			sound1Skip = SOUND_MAGIC / freq;
   1.161 +		}
   1.162 +		else
   1.163 +			sound1Skip = 0;
   1.164 +		break;
   1.165 +	case NR14:
   1.166 +		freq = (((int)(data & 7) << 8) | gbMemory[NR13]);
   1.167 +		freq = 2048 - freq;
   1.168 +		sound1ATL	   = 172 * (64 - (gbMemory[NR11] & 0x3f));
   1.169 +		sound1Continue = data & 0x40;
   1.170 +		if (freq)
   1.171 +		{
   1.172 +			sound1Skip = SOUND_MAGIC / freq;
   1.173 +		}
   1.174 +		else
   1.175 +			sound1Skip = 0;
   1.176 +		if (data & 0x80)
   1.177 +		{
   1.178 +			gbMemory[NR52]		|= 1;
   1.179 +			sound1EnvelopeVolume = gbMemory[NR12] >> 4;
   1.180 +			sound1EnvelopeUpDown = gbMemory[NR12] & 0x08;
   1.181 +			sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));
   1.182 +			sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (gbMemory[NR12] & 7);
   1.183 +			sound1SweepATL			= sound1SweepATLReload = 344 * ((gbMemory[NR10] >> 4) & 7);
   1.184 +			sound1SweepSteps		= gbMemory[NR10] & 7;
   1.185 +			sound1SweepUpDown		= gbMemory[NR10] & 0x08;
   1.186 +			sound1SweepStep			= 0;
   1.187 +
   1.188 +			sound1Index = 0;
   1.189 +			sound1On	= 1;
   1.190 +		}
   1.191 +		break;
   1.192 +	case NR21:
   1.193 +		sound2Wave = soundWavePattern[data >> 6];
   1.194 +		sound2ATL  = 172 * (64 - (data & 0x3f));
   1.195 +		break;
   1.196 +	case NR22:
   1.197 +		sound2EnvelopeVolume	= data >> 4;
   1.198 +		sound2EnvelopeUpDown	= data & 0x08;
   1.199 +		sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (data & 7);
   1.200 +		break;
   1.201 +	case NR23:
   1.202 +		freq	  = (((int)(gbMemory[NR24] & 7)) << 8) | data;
   1.203 +		sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));
   1.204 +		freq	  = 2048 - freq;
   1.205 +		if (freq)
   1.206 +		{
   1.207 +			sound2Skip = SOUND_MAGIC / freq;
   1.208 +		}
   1.209 +		else
   1.210 +			sound2Skip = 0;
   1.211 +		break;
   1.212 +	case NR24:
   1.213 +		freq = (((int)(data & 7) << 8) | gbMemory[NR23]);
   1.214 +		freq = 2048 - freq;
   1.215 +		sound2ATL	   = 172 * (64 - (gbMemory[NR21] & 0x3f));
   1.216 +		sound2Continue = data & 0x40;
   1.217 +		if (freq)
   1.218 +		{
   1.219 +			sound2Skip = SOUND_MAGIC / freq;
   1.220 +		}
   1.221 +		else
   1.222 +			sound2Skip = 0;
   1.223 +		if (data & 0x80)
   1.224 +		{
   1.225 +			gbMemory[NR52]		|= 2;
   1.226 +			sound2EnvelopeVolume = gbMemory[NR22] >> 4;
   1.227 +			sound2EnvelopeUpDown = gbMemory[NR22] & 0x08;
   1.228 +			sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));
   1.229 +			sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (gbMemory[NR22] & 7);
   1.230 +
   1.231 +			sound2Index = 0;
   1.232 +			sound2On	= 1;
   1.233 +		}
   1.234 +		break;
   1.235 +	case NR30:
   1.236 +		if (!(data & 0x80))
   1.237 +		{
   1.238 +			gbMemory[NR52] &= 0xfb;
   1.239 +			sound3On		= 0;
   1.240 +		}
   1.241 +		break;
   1.242 +	case NR31:
   1.243 +		sound3ATL = 172 * (256 - data);
   1.244 +		break;
   1.245 +	case NR32:
   1.246 +		sound3OutputLevel = (data >> 5) & 3;
   1.247 +		break;
   1.248 +	case NR33:
   1.249 +		freq = 2048 - (((int)(gbMemory[NR34] & 7) << 8) | data);
   1.250 +		if (freq)
   1.251 +		{
   1.252 +			sound3Skip = SOUND_MAGIC_2 / freq;
   1.253 +		}
   1.254 +		else
   1.255 +			sound3Skip = 0;
   1.256 +		break;
   1.257 +	case NR34:
   1.258 +		freq = 2048 - (((data & 7) << 8) | (int)gbMemory[NR33]);
   1.259 +		if (freq)
   1.260 +		{
   1.261 +			sound3Skip = SOUND_MAGIC_2 / freq;
   1.262 +		}
   1.263 +		else
   1.264 +		{
   1.265 +			sound3Skip = 0;
   1.266 +		}
   1.267 +		sound3Continue = data & 0x40;
   1.268 +		if ((data & 0x80) && (gbMemory[NR30] & 0x80))
   1.269 +		{
   1.270 +			gbMemory[NR52] |= 4;
   1.271 +			sound3ATL		= 172 * (256 - gbMemory[NR31]);
   1.272 +			sound3Index		= 0;
   1.273 +			sound3On		= 1;
   1.274 +		}
   1.275 +		break;
   1.276 +	case NR41:
   1.277 +		sound4ATL = 172 * (64 - (data & 0x3f));
   1.278 +		break;
   1.279 +	case NR42:
   1.280 +		sound4EnvelopeVolume	= data >> 4;
   1.281 +		sound4EnvelopeUpDown	= data & 0x08;
   1.282 +		sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (data & 7);
   1.283 +		break;
   1.284 +	case NR43:
   1.285 +		freq		 = soundFreqRatio[data & 7];
   1.286 +		sound4NSteps = data & 0x08;
   1.287 +
   1.288 +		sound4Skip = freq * NOISE_MAGIC;
   1.289 +
   1.290 +		sound4Clock = data >> 4;
   1.291 +
   1.292 +		freq = freq / soundShiftClock[sound4Clock];
   1.293 +
   1.294 +		sound4ShiftSkip = freq * NOISE_MAGIC;
   1.295 +
   1.296 +		break;
   1.297 +	case NR44:
   1.298 +		sound4Continue = data & 0x40;
   1.299 +		if (data & 0x80)
   1.300 +		{
   1.301 +			gbMemory[NR52]		|= 8;
   1.302 +			sound4EnvelopeVolume = gbMemory[NR42] >> 4;
   1.303 +			sound4EnvelopeUpDown = gbMemory[NR42] & 0x08;
   1.304 +			sound4ATL = 172 * (64 - (gbMemory[NR41] & 0x3f));
   1.305 +			sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (gbMemory[NR42] & 7);
   1.306 +
   1.307 +			sound4On = 1;
   1.308 +
   1.309 +			sound4Index		 = 0;
   1.310 +			sound4ShiftIndex = 0;
   1.311 +
   1.312 +			freq = soundFreqRatio[gbMemory[NR43] & 7];
   1.313 +
   1.314 +			sound4Skip = freq * NOISE_MAGIC;
   1.315 +
   1.316 +			sound4NSteps = gbMemory[NR43] & 0x08;
   1.317 +
   1.318 +			freq = freq / soundShiftClock[gbMemory[NR43] >> 4];
   1.319 +
   1.320 +			sound4ShiftSkip = freq * NOISE_MAGIC;
   1.321 +			if (sound4NSteps)
   1.322 +				sound4ShiftRight = 0x7f;
   1.323 +			else
   1.324 +				sound4ShiftRight = 0x7fff;
   1.325 +		}
   1.326 +		break;
   1.327 +	case NR50:
   1.328 +		soundVIN	= data & 0x88;
   1.329 +		soundLevel1 = data & 7;
   1.330 +		soundLevel2 = (data >> 4) & 7;
   1.331 +		break;
   1.332 +	case NR51:
   1.333 +		soundBalance	  = (data & soundEnableFlag);
   1.334 +		gbMemory[address] = data;
   1.335 +		break;
   1.336 +	case NR52:
   1.337 +		soundMasterOn = data & 0x80;
   1.338 +		if (!(data & 0x80))
   1.339 +		{
   1.340 +			sound1On = 0;
   1.341 +			sound2On = 0;
   1.342 +			sound3On = 0;
   1.343 +			sound4On = 0;
   1.344 +		}
   1.345 +		break;
   1.346 +	}
   1.347 +
   1.348 +	gbDigitalSound = true;
   1.349 +
   1.350 +	if (sound1On && sound1EnvelopeVolume != 0)
   1.351 +		gbDigitalSound = false;
   1.352 +	if (sound2On && sound2EnvelopeVolume != 0)
   1.353 +		gbDigitalSound = false;
   1.354 +	if (sound3On && sound3OutputLevel != 0)
   1.355 +		gbDigitalSound = false;
   1.356 +	if (sound4On && sound4EnvelopeVolume != 0)
   1.357 +		gbDigitalSound = false;
   1.358 +}
   1.359 +
   1.360 +void gbSoundChannel1()
   1.361 +{
   1.362 +	int vol = sound1EnvelopeVolume;
   1.363 +
   1.364 +	int freq = 0;
   1.365 +
   1.366 +	int value = 0;
   1.367 +
   1.368 +	if (sound1On && (sound1ATL || !sound1Continue))
   1.369 +	{
   1.370 +		sound1Index += soundQuality * sound1Skip;
   1.371 +		sound1Index &= 0x1fffffff;
   1.372 +
   1.373 +		value = ((s8)sound1Wave[sound1Index >> 24]) * vol;
   1.374 +	}
   1.375 +
   1.376 +	soundBuffer[0][soundIndex] = value;
   1.377 +
   1.378 +	if (sound1On)
   1.379 +	{
   1.380 +		if (sound1ATL)
   1.381 +		{
   1.382 +			sound1ATL -= soundQuality;
   1.383 +
   1.384 +			if (sound1ATL <= 0 && sound1Continue)
   1.385 +			{
   1.386 +				gbMemory[NR52] &= 0xfe;
   1.387 +				sound1On		= 0;
   1.388 +			}
   1.389 +		}
   1.390 +
   1.391 +		if (sound1EnvelopeATL)
   1.392 +		{
   1.393 +			sound1EnvelopeATL -= soundQuality;
   1.394 +
   1.395 +			if (sound1EnvelopeATL <= 0)
   1.396 +			{
   1.397 +				if (sound1EnvelopeUpDown)
   1.398 +				{
   1.399 +					if (sound1EnvelopeVolume < 15)
   1.400 +						sound1EnvelopeVolume++;
   1.401 +				}
   1.402 +				else
   1.403 +				{
   1.404 +					if (sound1EnvelopeVolume)
   1.405 +						sound1EnvelopeVolume--;
   1.406 +				}
   1.407 +
   1.408 +				sound1EnvelopeATL += sound1EnvelopeATLReload;
   1.409 +			}
   1.410 +		}
   1.411 +
   1.412 +		if (sound1SweepATL)
   1.413 +		{
   1.414 +			sound1SweepATL -= soundQuality;
   1.415 +
   1.416 +			if (sound1SweepATL <= 0)
   1.417 +			{
   1.418 +				freq = (((int)(gbMemory[NR14] & 7) << 8) | gbMemory[NR13]);
   1.419 +
   1.420 +				int updown = 1;
   1.421 +
   1.422 +				if (sound1SweepUpDown)
   1.423 +					updown = -1;
   1.424 +
   1.425 +				int newfreq = 0;
   1.426 +				if (sound1SweepSteps)
   1.427 +				{
   1.428 +					newfreq = freq + updown * freq / (1 << sound1SweepSteps);
   1.429 +					if (newfreq == freq)
   1.430 +						newfreq = 0;
   1.431 +				}
   1.432 +				else
   1.433 +					newfreq = freq;
   1.434 +
   1.435 +				if (newfreq < 0)
   1.436 +				{
   1.437 +					sound1SweepATL += sound1SweepATLReload;
   1.438 +				}
   1.439 +				else if (newfreq > 2047)
   1.440 +				{
   1.441 +					sound1SweepATL	= 0;
   1.442 +					sound1On		= 0;
   1.443 +					gbMemory[NR52] &= 0xfe;
   1.444 +				}
   1.445 +				else
   1.446 +				{
   1.447 +					sound1SweepATL += sound1SweepATLReload;
   1.448 +					sound1Skip		= SOUND_MAGIC / (2048 - newfreq);
   1.449 +
   1.450 +					gbMemory[NR13] = newfreq & 0xff;
   1.451 +					gbMemory[NR14] = (gbMemory[NR14] & 0xf8) | ((newfreq >> 8) & 7);
   1.452 +				}
   1.453 +			}
   1.454 +		}
   1.455 +	}
   1.456 +}
   1.457 +
   1.458 +void gbSoundChannel2()
   1.459 +{
   1.460 +	//  int freq = 0;
   1.461 +	int vol = sound2EnvelopeVolume;
   1.462 +
   1.463 +	int value = 0;
   1.464 +
   1.465 +	if (sound2On && (sound2ATL || !sound2Continue))
   1.466 +	{
   1.467 +		sound2Index += soundQuality * sound2Skip;
   1.468 +		sound2Index &= 0x1fffffff;
   1.469 +
   1.470 +		value = ((s8)sound2Wave[sound2Index >> 24]) * vol;
   1.471 +	}
   1.472 +
   1.473 +	soundBuffer[1][soundIndex] = value;
   1.474 +
   1.475 +	if (sound2On)
   1.476 +	{
   1.477 +		if (sound2ATL)
   1.478 +		{
   1.479 +			sound2ATL -= soundQuality;
   1.480 +
   1.481 +			if (sound2ATL <= 0 && sound2Continue)
   1.482 +			{
   1.483 +				gbMemory[NR52] &= 0xfd;
   1.484 +				sound2On		= 0;
   1.485 +			}
   1.486 +		}
   1.487 +
   1.488 +		if (sound2EnvelopeATL)
   1.489 +		{
   1.490 +			sound2EnvelopeATL -= soundQuality;
   1.491 +
   1.492 +			if (sound2EnvelopeATL <= 0)
   1.493 +			{
   1.494 +				if (sound2EnvelopeUpDown)
   1.495 +				{
   1.496 +					if (sound2EnvelopeVolume < 15)
   1.497 +						sound2EnvelopeVolume++;
   1.498 +				}
   1.499 +				else
   1.500 +				{
   1.501 +					if (sound2EnvelopeVolume)
   1.502 +						sound2EnvelopeVolume--;
   1.503 +				}
   1.504 +				sound2EnvelopeATL += sound2EnvelopeATLReload;
   1.505 +			}
   1.506 +		}
   1.507 +	}
   1.508 +}
   1.509 +
   1.510 +void gbSoundChannel3()
   1.511 +{
   1.512 +	int value = sound3Last;
   1.513 +
   1.514 +	if (sound3On && (sound3ATL || !sound3Continue))
   1.515 +	{
   1.516 +		sound3Index += soundQuality * sound3Skip;
   1.517 +		sound3Index &= 0x1fffffff;
   1.518 +
   1.519 +		value = gbMemory[0xff30 + (sound3Index >> 25)];
   1.520 +
   1.521 +		if ((sound3Index & 0x01000000))
   1.522 +		{
   1.523 +			value &= 0x0f;
   1.524 +		}
   1.525 +		else
   1.526 +		{
   1.527 +			value >>= 4;
   1.528 +		}
   1.529 +
   1.530 +		value -= 8;
   1.531 +		value *= 2;
   1.532 +
   1.533 +		switch (sound3OutputLevel)
   1.534 +		{
   1.535 +		case 0:
   1.536 +			value = 0;
   1.537 +			break;
   1.538 +		case 1:
   1.539 +			break;
   1.540 +		case 2:
   1.541 +			value = (value >> 1);
   1.542 +			break;
   1.543 +		case 3:
   1.544 +			value = (value >> 2);
   1.545 +			break;
   1.546 +		}
   1.547 +		//value += 1;
   1.548 +		sound3Last = value;
   1.549 +	}
   1.550 +
   1.551 +	soundBuffer[2][soundIndex] = value;
   1.552 +
   1.553 +	if (sound3On)
   1.554 +	{
   1.555 +		if (sound3ATL)
   1.556 +		{
   1.557 +			sound3ATL -= soundQuality;
   1.558 +
   1.559 +			if (sound3ATL <= 0 && sound3Continue)
   1.560 +			{
   1.561 +				gbMemory[NR52] &= 0xfb;
   1.562 +				sound3On		= 0;
   1.563 +			}
   1.564 +		}
   1.565 +	}
   1.566 +}
   1.567 +
   1.568 +void gbSoundChannel4()
   1.569 +{
   1.570 +	int vol = sound4EnvelopeVolume;
   1.571 +
   1.572 +	int value = 0;
   1.573 +
   1.574 +	if (sound4Clock <= 0x0c)
   1.575 +	{
   1.576 +		if (sound4On && (sound4ATL || !sound4Continue))
   1.577 +		{
   1.578 +	  #define NOISE_ONE_SAMP_SCALE  0x200000
   1.579 +
   1.580 +			sound4Index		 += soundQuality * sound4Skip;
   1.581 +			sound4ShiftIndex += soundQuality * sound4ShiftSkip;
   1.582 +
   1.583 +			if (sound4NSteps)
   1.584 +			{
   1.585 +				while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)
   1.586 +				{
   1.587 +					sound4ShiftRight = (((sound4ShiftRight << 6) ^
   1.588 +					                     (sound4ShiftRight << 5)) & 0x40) |
   1.589 +					                   (sound4ShiftRight >> 1);
   1.590 +					sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;
   1.591 +				}
   1.592 +			}
   1.593 +			else
   1.594 +			{
   1.595 +				while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)
   1.596 +				{
   1.597 +					sound4ShiftRight = (((sound4ShiftRight << 14) ^
   1.598 +					                     (sound4ShiftRight << 13)) & 0x4000) |
   1.599 +					                   (sound4ShiftRight >> 1);
   1.600 +
   1.601 +					sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;
   1.602 +				}
   1.603 +			}
   1.604 +
   1.605 +			sound4Index		 %= NOISE_ONE_SAMP_SCALE;
   1.606 +			sound4ShiftIndex %= NOISE_ONE_SAMP_SCALE;
   1.607 +
   1.608 +			value = ((sound4ShiftRight & 1) * 2 - 1) * vol;
   1.609 +		}
   1.610 +		else
   1.611 +		{
   1.612 +			value = 0;
   1.613 +		}
   1.614 +	}
   1.615 +
   1.616 +	soundBuffer[3][soundIndex] = value;
   1.617 +
   1.618 +	if (sound4On)
   1.619 +	{
   1.620 +		if (sound4ATL)
   1.621 +		{
   1.622 +			sound4ATL -= soundQuality;
   1.623 +
   1.624 +			if (sound4ATL <= 0 && sound4Continue)
   1.625 +			{
   1.626 +				gbMemory[NR52] &= 0xfd;
   1.627 +				sound4On		= 0;
   1.628 +			}
   1.629 +		}
   1.630 +
   1.631 +		if (sound4EnvelopeATL)
   1.632 +		{
   1.633 +			sound4EnvelopeATL -= soundQuality;
   1.634 +
   1.635 +			if (sound4EnvelopeATL <= 0)
   1.636 +			{
   1.637 +				if (sound4EnvelopeUpDown)
   1.638 +				{
   1.639 +					if (sound4EnvelopeVolume < 15)
   1.640 +						sound4EnvelopeVolume++;
   1.641 +				}
   1.642 +				else
   1.643 +				{
   1.644 +					if (sound4EnvelopeVolume)
   1.645 +						sound4EnvelopeVolume--;
   1.646 +				}
   1.647 +				sound4EnvelopeATL += sound4EnvelopeATLReload;
   1.648 +			}
   1.649 +		}
   1.650 +	}
   1.651 +}
   1.652 +
   1.653 +void gbSoundMix()
   1.654 +{
   1.655 +	int res = 0;
   1.656 +
   1.657 +	if (gbMemory)
   1.658 +		soundBalance = (gbMemory[NR51] & soundEnableFlag & ~soundMutedFlag);
   1.659 +
   1.660 +	if (soundBalance & 16)
   1.661 +	{
   1.662 +		res += ((s8)soundBuffer[0][soundIndex]);
   1.663 +	}
   1.664 +	if (soundBalance & 32)
   1.665 +	{
   1.666 +		res += ((s8)soundBuffer[1][soundIndex]);
   1.667 +	}
   1.668 +	if (soundBalance & 64)
   1.669 +	{
   1.670 +		res += ((s8)soundBuffer[2][soundIndex]);
   1.671 +	}
   1.672 +	if (soundBalance & 128)
   1.673 +	{
   1.674 +		res += ((s8)soundBuffer[3][soundIndex]);
   1.675 +	}
   1.676 +
   1.677 +	if (gbDigitalSound)
   1.678 +		res = soundLevel1 * 256;
   1.679 +	else
   1.680 +		res *= soundLevel1 * 60;
   1.681 +
   1.682 +	if (soundEcho)
   1.683 +	{
   1.684 +		res *= 2;
   1.685 +		res += soundFilter[soundEchoIndex];
   1.686 +		res /= 2;
   1.687 +		soundFilter[soundEchoIndex++] = res;
   1.688 +	}
   1.689 +
   1.690 +	if (soundLowPass)
   1.691 +	{
   1.692 +		soundLeft[4] = soundLeft[3];
   1.693 +		soundLeft[3] = soundLeft[2];
   1.694 +		soundLeft[2] = soundLeft[1];
   1.695 +		soundLeft[1] = soundLeft[0];
   1.696 +		soundLeft[0] = res;
   1.697 +		res = (soundLeft[4] + 2 * soundLeft[3] + 8 * soundLeft[2] + 2 * soundLeft[1] +
   1.698 +		       soundLeft[0]) / 14;
   1.699 +	}
   1.700 +
   1.701 +	bool noSpecialEffects = false;
   1.702 +#if (defined(WIN32) && !defined(SDL))
   1.703 +	if (theApp.soundRecording || theApp.aviRecording || theApp.nvAudioLog)
   1.704 +		noSpecialEffects = true;
   1.705 +#endif
   1.706 +
   1.707 +	if (!noSpecialEffects)
   1.708 +	{
   1.709 +		switch (soundVolume)
   1.710 +		{
   1.711 +		case 0:
   1.712 +		case 1:
   1.713 +		case 2:
   1.714 +		case 3:
   1.715 +			res *= (soundVolume + 1);
   1.716 +			break;
   1.717 +		case 4:
   1.718 +			res >>= 2;
   1.719 +			break;
   1.720 +		case 5:
   1.721 +			res >>= 1;
   1.722 +			break;
   1.723 +		}
   1.724 +	}
   1.725 +
   1.726 +	if (res > 32767)
   1.727 +		res = 32767;
   1.728 +	if (res < -32768)
   1.729 +		res = -32768;
   1.730 +
   1.731 +	if (soundReverse && !noSpecialEffects)
   1.732 +	{
   1.733 +		soundFinalWave[++soundBufferIndex] = res;
   1.734 +		if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
   1.735 +			/*assert(false)*/;
   1.736 +		else
   1.737 +			soundFrameSound[++soundFrameSoundWritten] = res;
   1.738 +	}
   1.739 +	else
   1.740 +	{
   1.741 +		soundFinalWave[soundBufferIndex++] = res;
   1.742 +		if (soundFrameSoundWritten >= countof(soundFrameSound))
   1.743 +			/*assert(false)*/;
   1.744 +		else
   1.745 +			soundFrameSound[soundFrameSoundWritten++] = res;
   1.746 +	}
   1.747 +
   1.748 +	res = 0;
   1.749 +
   1.750 +	if (soundBalance & 1)
   1.751 +	{
   1.752 +		res += ((s8)soundBuffer[0][soundIndex]);
   1.753 +	}
   1.754 +	if (soundBalance & 2)
   1.755 +	{
   1.756 +		res += ((s8)soundBuffer[1][soundIndex]);
   1.757 +	}
   1.758 +	if (soundBalance & 4)
   1.759 +	{
   1.760 +		res += ((s8)soundBuffer[2][soundIndex]);
   1.761 +	}
   1.762 +	if (soundBalance & 8)
   1.763 +	{
   1.764 +		res += ((s8)soundBuffer[3][soundIndex]);
   1.765 +	}
   1.766 +
   1.767 +	if (gbDigitalSound)
   1.768 +		res = soundLevel2 * 256;
   1.769 +	else
   1.770 +		res *= soundLevel2 * 60;
   1.771 +
   1.772 +	if (soundEcho)
   1.773 +	{
   1.774 +		res *= 2;
   1.775 +		res += soundFilter[soundEchoIndex];
   1.776 +		res /= 2;
   1.777 +		soundFilter[soundEchoIndex++] = res;
   1.778 +
   1.779 +		if (soundEchoIndex >= 4000)
   1.780 +			soundEchoIndex = 0;
   1.781 +	}
   1.782 +
   1.783 +	if (soundLowPass)
   1.784 +	{
   1.785 +		soundRight[4] = soundRight[3];
   1.786 +		soundRight[3] = soundRight[2];
   1.787 +		soundRight[2] = soundRight[1];
   1.788 +		soundRight[1] = soundRight[0];
   1.789 +		soundRight[0] = res;
   1.790 +		res = (soundRight[4] + 2 * soundRight[3] + 8 * soundRight[2] + 2 * soundRight[1] +
   1.791 +		       soundRight[0]) / 14;
   1.792 +	}
   1.793 +
   1.794 +	if (!noSpecialEffects)
   1.795 +	{
   1.796 +		switch (soundVolume)
   1.797 +		{
   1.798 +		case 0:
   1.799 +		case 1:
   1.800 +		case 2:
   1.801 +		case 3:
   1.802 +			res *= (soundVolume + 1);
   1.803 +			break;
   1.804 +		case 4:
   1.805 +			res >>= 2;
   1.806 +			break;
   1.807 +		case 5:
   1.808 +			res >>= 1;
   1.809 +			break;
   1.810 +		}
   1.811 +	}
   1.812 +
   1.813 +	if (res > 32767)
   1.814 +		res = 32767;
   1.815 +	if (res < -32768)
   1.816 +		res = -32768;
   1.817 +
   1.818 +	if (soundReverse && !noSpecialEffects)
   1.819 +	{
   1.820 +		soundFinalWave[-1 + soundBufferIndex++]		   = res;
   1.821 +		if ((soundFrameSoundWritten) >= countof(soundFrameSound))
   1.822 +			/*assert(false)*/;
   1.823 +		else
   1.824 +			soundFrameSound[-1 + soundFrameSoundWritten++] = res;
   1.825 +	}
   1.826 +	else
   1.827 +	{
   1.828 +		soundFinalWave[soundBufferIndex++]			  = res;
   1.829 +		if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
   1.830 +			/*assert(false)*/;
   1.831 +		else
   1.832 +			soundFrameSound[soundFrameSoundWritten++] = res;
   1.833 +	}
   1.834 +}
   1.835 +
   1.836 +void gbSoundTick()
   1.837 +{
   1.838 +	if (systemSoundOn)
   1.839 +	{
   1.840 +		if (soundMasterOn)
   1.841 +		{
   1.842 +			gbSoundChannel1();
   1.843 +			gbSoundChannel2();
   1.844 +			gbSoundChannel3();
   1.845 +			gbSoundChannel4();
   1.846 +
   1.847 +			gbSoundMix();
   1.848 +		}
   1.849 +		else
   1.850 +		{
   1.851 +			soundFinalWave[soundBufferIndex++] = 0;
   1.852 +			soundFinalWave[soundBufferIndex++] = 0;
   1.853 +			if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
   1.854 +				/*assert(false)*/;
   1.855 +			else
   1.856 +			{
   1.857 +				soundFrameSound[soundFrameSoundWritten++] = 0;
   1.858 +				soundFrameSound[soundFrameSoundWritten++] = 0;
   1.859 +			}
   1.860 +		}
   1.861 +
   1.862 +		soundIndex++;
   1.863 +
   1.864 +		if (2 * soundBufferIndex >= soundBufferLen)
   1.865 +		{
   1.866 +			if (systemSoundOn)
   1.867 +			{
   1.868 +				if (soundPaused)
   1.869 +				{
   1.870 +					extern void soundResume();
   1.871 +					soundResume();
   1.872 +				}
   1.873 +
   1.874 +				systemSoundWriteToBuffer();
   1.875 +			}
   1.876 +			soundIndex		 = 0;
   1.877 +			soundBufferIndex = 0;
   1.878 +		}
   1.879 +	}
   1.880 +}
   1.881 +
   1.882 +void gbSoundReset()
   1.883 +{
   1.884 +	soundPaused		  = 1;
   1.885 +	soundPlay		  = 0;
   1.886 +	SOUND_CLOCK_TICKS = soundQuality * GB_USE_TICKS_AS;
   1.887 +//  soundTicks = SOUND_CLOCK_TICKS;
   1.888 +	soundTicks		  = 0;
   1.889 +	soundNextPosition = 0;
   1.890 +	soundMasterOn	  = 1;
   1.891 +	soundIndex		  = 0;
   1.892 +	soundBufferIndex  = 0;
   1.893 +	soundLevel1		  = 7;
   1.894 +	soundLevel2		  = 7;
   1.895 +	soundVIN = 0;
   1.896 +
   1.897 +	sound1On = 0;
   1.898 +	sound1ATL = 0;
   1.899 +	sound1Skip = 0;
   1.900 +	sound1Index = 0;
   1.901 +	sound1Continue = 0;
   1.902 +	sound1EnvelopeVolume	= 0;
   1.903 +	sound1EnvelopeATL		= 0;
   1.904 +	sound1EnvelopeUpDown	= 0;
   1.905 +	sound1EnvelopeATLReload = 0;
   1.906 +	sound1SweepATL			= 0;
   1.907 +	sound1SweepATLReload	= 0;
   1.908 +	sound1SweepSteps		= 0;
   1.909 +	sound1SweepUpDown		= 0;
   1.910 +	sound1SweepStep			= 0;
   1.911 +	sound1Wave				= soundWavePattern[2];
   1.912 +
   1.913 +	sound2On = 0;
   1.914 +	sound2ATL = 0;
   1.915 +	sound2Skip = 0;
   1.916 +	sound2Index = 0;
   1.917 +	sound2Continue = 0;
   1.918 +	sound2EnvelopeVolume	= 0;
   1.919 +	sound2EnvelopeATL		= 0;
   1.920 +	sound2EnvelopeUpDown	= 0;
   1.921 +	sound2EnvelopeATLReload = 0;
   1.922 +	sound2Wave				= soundWavePattern[2];
   1.923 +
   1.924 +	sound3On = 0;
   1.925 +	sound3ATL		  = 0;
   1.926 +	sound3Skip		  = 0;
   1.927 +	sound3Index		  = 0;
   1.928 +	sound3Continue	  = 0;
   1.929 +	sound3OutputLevel = 0;
   1.930 +
   1.931 +	sound4On = 0;
   1.932 +	sound4Clock = 0;
   1.933 +	sound4ATL = 0;
   1.934 +	sound4Skip = 0;
   1.935 +	sound4Index = 0;
   1.936 +	sound4ShiftRight		= 0x7f;
   1.937 +	sound4NSteps			= 0;
   1.938 +	sound4CountDown			= 0;
   1.939 +	sound4Continue			= 0;
   1.940 +	sound4EnvelopeVolume	= 0;
   1.941 +	sound4EnvelopeATL		= 0;
   1.942 +	sound4EnvelopeUpDown	= 0;
   1.943 +	sound4EnvelopeATLReload = 0;
   1.944 +
   1.945 +	// don't translate
   1.946 +	if (soundDebug)
   1.947 +	{
   1.948 +		log("*** Sound Init ***\n");
   1.949 +	}
   1.950 +
   1.951 +	gbSoundEvent(0xff10, 0x80);
   1.952 +	gbSoundEvent(0xff11, 0xbf);
   1.953 +	gbSoundEvent(0xff12, 0xf3);
   1.954 +	gbSoundEvent(0xff14, 0xbf);
   1.955 +	gbSoundEvent(0xff16, 0x3f);
   1.956 +	gbSoundEvent(0xff17, 0x00);
   1.957 +	gbSoundEvent(0xff19, 0xbf);
   1.958 +
   1.959 +	gbSoundEvent(0xff1a, 0x7f);
   1.960 +	gbSoundEvent(0xff1b, 0xff);
   1.961 +	gbSoundEvent(0xff1c, 0xbf);
   1.962 +	gbSoundEvent(0xff1e, 0xbf);
   1.963 +
   1.964 +	gbSoundEvent(0xff20, 0xff);
   1.965 +	gbSoundEvent(0xff21, 0x00);
   1.966 +	gbSoundEvent(0xff22, 0x00);
   1.967 +	gbSoundEvent(0xff23, 0xbf);
   1.968 +	gbSoundEvent(0xff24, 0x77);
   1.969 +	gbSoundEvent(0xff25, 0xf3);
   1.970 +
   1.971 +	gbSoundEvent(0xff26, 0xf0);
   1.972 +
   1.973 +	// don't translate
   1.974 +	if (soundDebug)
   1.975 +	{
   1.976 +		log("*** Sound Init Complete ***\n");
   1.977 +	}
   1.978 +
   1.979 +	sound1On = 0;
   1.980 +	sound2On = 0;
   1.981 +	sound3On = 0;
   1.982 +	sound4On = 0;
   1.983 +
   1.984 +	int addr = 0xff30;
   1.985 +
   1.986 +	while (addr < 0xff40)
   1.987 +	{
   1.988 +		gbMemory[addr++] = 0x00;
   1.989 +		gbMemory[addr++] = 0xff;
   1.990 +	}
   1.991 +
   1.992 +	memset(soundFinalWave, 0x00, soundBufferLen);
   1.993 +
   1.994 +	memset(soundFilter, 0, sizeof(soundFilter));
   1.995 +	soundEchoIndex = 0;
   1.996 +}
   1.997 +
   1.998 +extern bool soundInit();
   1.999 +extern void soundShutdown();
  1.1000 +
  1.1001 +void gbSoundSetQuality(int quality)
  1.1002 +{
  1.1003 +	if (soundQuality != quality && systemSoundCanChangeQuality())
  1.1004 +	{
  1.1005 +		if (!soundOffFlag)
  1.1006 +			soundShutdown();
  1.1007 +		soundQuality	  = quality;
  1.1008 +		soundNextPosition = 0;
  1.1009 +		if (!soundOffFlag)
  1.1010 +			soundInit();
  1.1011 +		SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;
  1.1012 +		soundIndex		  = 0;
  1.1013 +		soundBufferIndex  = 0;
  1.1014 +	}
  1.1015 +	else
  1.1016 +	{
  1.1017 +		soundNextPosition = 0;
  1.1018 +		SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;
  1.1019 +		soundIndex		  = 0;
  1.1020 +		soundBufferIndex  = 0;
  1.1021 +	}
  1.1022 +}
  1.1023 +
  1.1024 +static int32 soundTicks_int32;
  1.1025 +static int32 SOUND_CLOCK_TICKS_int32;
  1.1026 +variable_desc gbSoundSaveStruct[] = {
  1.1027 +	{ &soundPaused,				sizeof(int32)					  },
  1.1028 +	{ &soundPlay,				sizeof(int32)					  },
  1.1029 +	{ &soundTicks_int32,		sizeof(int32)					  },
  1.1030 +	{ &SOUND_CLOCK_TICKS_int32, sizeof(int32)					  },
  1.1031 +	{ &soundLevel1,				sizeof(int32)					  },
  1.1032 +	{ &soundLevel2,				sizeof(int32)					  },
  1.1033 +	{ &soundBalance,			sizeof(int32)					  },
  1.1034 +	{ &soundMasterOn,			sizeof(int32)					  },
  1.1035 +	{ &soundIndex,				sizeof(int32)					  },
  1.1036 +	{ &soundVIN,				sizeof(int32)					  },
  1.1037 +	{ &sound1On,				sizeof(int32)					  },
  1.1038 +	{ &sound1ATL,				sizeof(int32)					  },
  1.1039 +	{ &sound1Skip,				sizeof(int32)					  },
  1.1040 +	{ &sound1Index,				sizeof(int32)					  },
  1.1041 +	{ &sound1Continue,			sizeof(int32)					  },
  1.1042 +	{ &sound1EnvelopeVolume,	sizeof(int32)					  },
  1.1043 +	{ &sound1EnvelopeATL,		sizeof(int32)					  },
  1.1044 +	{ &sound1EnvelopeATLReload, sizeof(int32)					  },
  1.1045 +	{ &sound1EnvelopeUpDown,	sizeof(int32)					  },
  1.1046 +	{ &sound1SweepATL,			sizeof(int32)					  },
  1.1047 +	{ &sound1SweepATLReload,	sizeof(int32)					  },
  1.1048 +	{ &sound1SweepSteps,		sizeof(int32)					  },
  1.1049 +	{ &sound1SweepUpDown,		sizeof(int32)					  },
  1.1050 +	{ &sound1SweepStep,			sizeof(int32)					  },
  1.1051 +	{ &sound2On,				sizeof(int32)					  },
  1.1052 +	{ &sound2ATL,				sizeof(int32)					  },
  1.1053 +	{ &sound2Skip,				sizeof(int32)					  },
  1.1054 +	{ &sound2Index,				sizeof(int32)					  },
  1.1055 +	{ &sound2Continue,			sizeof(int32)					  },
  1.1056 +	{ &sound2EnvelopeVolume,	sizeof(int32)					  },
  1.1057 +	{ &sound2EnvelopeATL,		sizeof(int32)					  },
  1.1058 +	{ &sound2EnvelopeATLReload, sizeof(int32)					  },
  1.1059 +	{ &sound2EnvelopeUpDown,	sizeof(int32)					  },
  1.1060 +	{ &sound3On,				sizeof(int32)					  },
  1.1061 +	{ &sound3ATL,				sizeof(int32)					  },
  1.1062 +	{ &sound3Skip,				sizeof(int32)					  },
  1.1063 +	{ &sound3Index,				sizeof(int32)					  },
  1.1064 +	{ &sound3Continue,			sizeof(int32)					  },
  1.1065 +	{ &sound3OutputLevel,		sizeof(int32)					  },
  1.1066 +	{ &sound4On,				sizeof(int32)					  },
  1.1067 +	{ &sound4ATL,				sizeof(int32)					  },
  1.1068 +	{ &sound4Skip,				sizeof(int32)					  },
  1.1069 +	{ &sound4Index,				sizeof(int32)					  },
  1.1070 +	{ &sound4Clock,				sizeof(int32)					  },
  1.1071 +	{ &sound4ShiftRight,		sizeof(int32)					  },
  1.1072 +	{ &sound4ShiftSkip,			sizeof(int32)					  },
  1.1073 +	{ &sound4ShiftIndex,		sizeof(int32)					  },
  1.1074 +	{ &sound4NSteps,			sizeof(int32)					  },
  1.1075 +	{ &sound4CountDown,			sizeof(int32)					  },
  1.1076 +	{ &sound4Continue,			sizeof(int32)					  },
  1.1077 +	{ &sound4EnvelopeVolume,	sizeof(int32)					  },
  1.1078 +	{ &sound4EnvelopeATL,		sizeof(int32)					  },
  1.1079 +	{ &sound4EnvelopeATLReload, sizeof(int32)					  },
  1.1080 +	{ &sound4EnvelopeUpDown,	sizeof(int32)					  },
  1.1081 +	{ &soundEnableFlag,			sizeof(int32)					  },
  1.1082 +	{ NULL,						0								  }
  1.1083 +};
  1.1084 +
  1.1085 +//variable_desc gbSoundSaveStructV2[] = {
  1.1086 +//  { &soundTicks, sizeof(soundtick_t) },
  1.1087 +//  { &SOUND_CLOCK_TICKS, sizeof(soundtick_t) },
  1.1088 +//  { &GB_USE_TICKS_AS, sizeof(soundtick_t) },
  1.1089 +//  { NULL, 0 }
  1.1090 +//};
  1.1091 +
  1.1092 +void gbSoundSaveGame(gzFile gzFile)
  1.1093 +{
  1.1094 +	soundTicks_int32		= (int32) soundTicks;
  1.1095 +	SOUND_CLOCK_TICKS_int32 = (int32) SOUND_CLOCK_TICKS;
  1.1096 +
  1.1097 +	utilWriteData(gzFile, gbSoundSaveStruct);
  1.1098 +
  1.1099 +	utilGzWrite(gzFile, soundBuffer, 4 * 735);
  1.1100 +	utilGzWrite(gzFile, soundFinalWave, 2 * 735);
  1.1101 +	utilGzWrite(gzFile, &soundQuality, sizeof(int32));
  1.1102 +
  1.1103 +	//utilWriteData(gzFile, gbSoundSaveStructV2);
  1.1104 +}
  1.1105 +
  1.1106 +void gbSoundReadGame(int version, gzFile gzFile)
  1.1107 +{
  1.1108 +	int32 oldSoundPaused = soundPaused;
  1.1109 +	int32 oldSoundEnableFlag = soundEnableFlag;
  1.1110 +	utilReadData(gzFile, gbSoundSaveStruct);
  1.1111 +	soundPaused = oldSoundPaused;
  1.1112 +	soundEnableFlag = oldSoundEnableFlag;
  1.1113 +
  1.1114 +	soundBufferIndex = soundIndex * 2;
  1.1115 +
  1.1116 +	utilGzRead(gzFile, soundBuffer, 4 * 735);
  1.1117 +	utilGzRead(gzFile, soundFinalWave, 2 * 735);
  1.1118 +
  1.1119 +	if (version >= 7)
  1.1120 +	{
  1.1121 +		int quality = 1;
  1.1122 +		utilGzRead(gzFile, &quality, sizeof(int32));
  1.1123 +		gbSoundSetQuality(quality);
  1.1124 +	}
  1.1125 +	else
  1.1126 +	{
  1.1127 +		soundQuality = -1;
  1.1128 +		gbSoundSetQuality(1);
  1.1129 +	}
  1.1130 +
  1.1131 +	sound1Wave = soundWavePattern[gbMemory[NR11] >> 6];
  1.1132 +	sound2Wave = soundWavePattern[gbMemory[NR21] >> 6];
  1.1133 +
  1.1134 +	//if(version >= 14) {
  1.1135 +	//  utilReadData(gzFile, gbSoundSaveStructV2);
  1.1136 +	//}
  1.1137 +	//else {
  1.1138 +	soundTicks		  = (soundtick_t) soundTicks_int32;
  1.1139 +	SOUND_CLOCK_TICKS = (soundtick_t) SOUND_CLOCK_TICKS_int32;
  1.1140 +	//}
  1.1141 +}
  1.1142 +