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sound.cpp
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#include "game.h"
#include "resource.h"
#include "system.h"
#include "util.h"
enum {
kFlagPlaying = 1 << 0,
kFlagPaused = 1 << 1, // no PCM
kFlagNoCode = 1 << 2 // no bytecode
};
// if x < 90, lut[x] ~= x / 2
// if x > 90, lut[x] ~= 45 + (x - 90) * 2
static const uint8_t _volumeRampTable[129] = {
0x00, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06,
0x06, 0x07, 0x07, 0x07, 0x08, 0x08, 0x09, 0x09, 0x09, 0x0A, 0x0A, 0x0B, 0x0B, 0x0C, 0x0C, 0x0C,
0x0D, 0x0D, 0x0E, 0x0E, 0x0F, 0x0F, 0x10, 0x10, 0x10, 0x11, 0x11, 0x12, 0x12, 0x13, 0x13, 0x14,
0x14, 0x15, 0x15, 0x16, 0x16, 0x17, 0x17, 0x18, 0x18, 0x19, 0x1A, 0x1A, 0x1B, 0x1B, 0x1C, 0x1C,
0x1D, 0x1D, 0x1E, 0x1F, 0x1F, 0x20, 0x20, 0x21, 0x22, 0x22, 0x23, 0x23, 0x24, 0x25, 0x25, 0x26,
0x27, 0x27, 0x28, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2F, 0x30, 0x32, 0x33, 0x35, 0x37, 0x38,
0x3A, 0x3C, 0x3D, 0x3F, 0x41, 0x43, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E, 0x50, 0x52, 0x54, 0x56,
0x59, 0x5B, 0x5D, 0x5F, 0x62, 0x64, 0x66, 0x69, 0x6B, 0x6E, 0x70, 0x73, 0x76, 0x78, 0x7B, 0x7E,
0x80
};
static uint32_t sssGroupValue(uint8_t source, uint8_t mask, const SssInfo *s) {
return (mask << 24) | (source << 20) | ((s->sampleIndex & 15) << 16) | (s->concurrencyMask << 12) | (s->sssBankIndex & 0xFFF);
}
static bool compareSssGroup(uint32_t flags_a, uint32_t flags_b) {
if (0) {
// the x86 code compares the 3 bit fields.
// the original code possibly used a structure with bit fields that was optimized by the compiler as a uint32_t
if (((flags_a >> 20) & 15) == ((flags_b >> 20) & 15)) { // source : 0,1,2 (Andy, monster1, monster2)
if ((flags_a & 0xFFF) == (flags_b & 0xFFF)) { // bank index
return (flags_a >> 24) == (flags_b >> 24); // sample index, used as a mask lut[][] |= 1 << index
}
}
return false;
}
// we can instead simply compare masked integers
return compare_bits(flags_a, flags_b, 0xFFF00FFF);
}
// returns the active samples for the table/source/bank
static uint32_t *getSssGroupPtr(Resource *res, int num, uint32_t flags) {
const int source = (flags >> 20) & 15; // 0,1,2
assert(source < 3);
const int bankIndex = flags & 0xFFF;
assert(bankIndex < res->_sssHdr.banksDataCount);
switch (num) {
case 1:
return &res->_sssGroup1[source][bankIndex];
case 2:
return &res->_sssGroup2[source][bankIndex];
case 3:
return &res->_sssGroup3[source][bankIndex];
}
error("Invalid sssGroup %d", num);
return 0;
}
void Game::muteSound() {
MixerLock ml(&_mix);
_snd_muted = true;
_snd_bufferOffset = _snd_bufferSize = 0;
_mix._mixingQueueSize = 0;
}
void Game::unmuteSound() {
MixerLock ml(&_mix);
_snd_muted = false;
_snd_bufferOffset = _snd_bufferSize = 0;
_mix._mixingQueueSize = 0;
}
void Game::resetSound() {
MixerLock ml(&_mix);
clearSoundObjects();
}
int Game::getSoundPosition(const SssObject *so) {
MixerLock ml(&_mix);
return so->pcm ? so->pcmFramesCount : -1;
}
void Game::setSoundPanning(SssObject *so, int panning) {
MixerLock ml(&_mix);
so->panning = panning;
setSoundObjectPanning(so);
}
SssObject *Game::findLowPrioritySoundObject() const {
SssObject *so = 0;
if (_playingSssObjectsCount >= _playingSssObjectsMax && _sssObjectsList1) {
so = _sssObjectsList1;
for (SssObject *current = so->nextPtr; current; current = current->nextPtr) {
if (so->currentPriority > current->currentPriority) {
so = current;
}
}
}
return so;
}
void Game::removeSoundObjectFromList(SssObject *so) {
debug(kDebug_SOUND, "removeSoundObjectFromList so %p flags 0x%x", so, so->flags);
so->pcm = 0;
if ((so->flags & kFlagPlaying) != 0) {
// remove from linked list1
SssObject *next = so->nextPtr;
SssObject *prev = so->prevPtr;
if (next) {
next->prevPtr = prev;
}
if (prev) {
prev->nextPtr = next;
} else {
assert(so == _sssObjectsList1);
_sssObjectsList1 = next;
}
--_playingSssObjectsCount;
if (_playingSssObjectsMax > 0) {
if (_lowPrioritySssObject == so || (_playingSssObjectsCount < _playingSssObjectsMax && _lowPrioritySssObject)) {
_lowPrioritySssObject = findLowPrioritySoundObject();
}
}
} else {
// remove from linked list2
SssObject *next = so->nextPtr;
SssObject *prev = so->prevPtr;
if (next) {
next->prevPtr = prev;
}
if (prev) {
prev->nextPtr = next;
} else {
assert(so == _sssObjectsList2);
_sssObjectsList2 = next;
}
}
}
void Game::updateSoundObject(SssObject *so) {
_sssUpdatedObjectsTable[so->num] = true;
_sssObjectsChanged = so->filter->changed;
if ((so->flags & kFlagNoCode) == 0) {
if (so->pcm == 0) {
if (so->codeDataStage1) {
so->codeDataStage1 = executeSssCode(so, so->codeDataStage1);
}
if (so->pcm == 0) {
return;
}
if (so->codeDataStage4) {
so->codeDataStage4 = executeSssCode(so, so->codeDataStage4);
}
if (so->pcm == 0) {
return;
}
} else {
if (so->codeDataStage1) {
so->codeDataStage1 = executeSssCode(so, so->codeDataStage1);
}
if (so->pcm == 0) {
return;
}
if (so->panningPtr) {
const int panning = getSoundObjectPanning(so);
if (panning != so->panning) {
so->panning = panning;
_sssObjectsChanged = true;
}
} else {
if (so->codeDataStage2) {
so->codeDataStage2 = executeSssCode(so, so->codeDataStage2);
}
}
if (so->pcm == 0) {
return;
}
if (so->codeDataStage3) {
so->codeDataStage3 = executeSssCode(so, so->codeDataStage3);
}
if (so->pcm == 0) {
return;
}
if (so->codeDataStage4) {
so->codeDataStage4 = executeSssCode(so, so->codeDataStage4);
}
if (so->pcm == 0) {
return;
}
if (_sssObjectsChanged && (so->flags & kFlagPlaying) != 0) {
setSoundObjectPanning(so);
}
}
} else if ((so->flags & kFlagPlaying) != 0) {
if (so->panningPtr) {
const int panning = getSoundObjectPanning(so);
if (panning != so->panning) {
so->panning = panning;
_sssObjectsChanged = true;
setSoundObjectPanning(so);
}
} else if (_sssObjectsChanged) {
setSoundObjectPanning(so);
}
}
if (so->pcmFramesCount != 0) {
--so->pcmFramesCount;
if ((so->flags & kFlagPaused) == 0) {
++so->currentPcmFrame;
}
} else {
const uint32_t flags = so->flags0;
removeSoundObjectFromList(so);
if (so->nextSoundBank != -1) {
LvlObject *tmp = _currentSoundLvlObject;
_currentSoundLvlObject = so->lvlObject;
createSoundObject(so->nextSoundBank, so->nextSoundSample, flags);
_currentSoundLvlObject = tmp;
return;
}
updateSssGroup2(flags);
}
}
void Game::sssOp12_removeSounds2(int num, uint8_t source, uint8_t sampleIndex) {
assert(source < 3);
assert(num < _res->_sssHdr.banksDataCount);
assert(sampleIndex < 32);
const uint32_t mask = (1 << sampleIndex);
_res->_sssGroup1[source][num] &= ~mask;
for (SssObject *so = _sssObjectsList1; so; so = so->nextPtr) {
if (so->bankIndex == num && ((so->flags1 >> 20) & 15) == source && (so->flags1 >> 24) == sampleIndex) {
so->codeDataStage3 = 0;
if (so->codeDataStage4 == 0) {
removeSoundObjectFromList(so);
}
so->nextSoundBank = -1;
so->delayCounter = -2;
}
}
for (SssObject *so = _sssObjectsList2; so; so = so->nextPtr) {
if (so->bankIndex == num && ((so->flags1 >> 20) & 15) == source && (so->flags1 >> 24) == sampleIndex) {
so->codeDataStage3 = 0;
if (so->codeDataStage4 == 0) {
removeSoundObjectFromList(so);
}
so->nextSoundBank = -1;
so->delayCounter = -2;
}
}
while (_sssObjectsCount > 0 && _sssObjectsTable[_sssObjectsCount - 1].pcm == 0) {
--_sssObjectsCount;
}
}
void Game::sssOp16_resumeSound(SssObject *so) {
debug(kDebug_SOUND, "sssOp16_resumeSound so %p flags 0x%x", so, so->flags);
if ((so->flags & kFlagPaused) != 0) {
SssObject *next = so->nextPtr;
SssObject *prev = so->prevPtr;
SssPcm *pcm = so->pcm;
so->pcm = 0;
if (next) {
next->prevPtr = prev;
}
if (prev) {
prev->nextPtr = next;
} else {
assert(so == _sssObjectsList2);
_sssObjectsList2 = next;
}
so->pcm = pcm;
so->flags &= ~kFlagPaused;
prependSoundObjectToList(so);
}
}
void Game::sssOp17_pauseSound(SssObject *so) {
debug(kDebug_SOUND, "sssOp17_pauseSound so %p flags 0x%x", so, so->flags);
if ((so->flags & kFlagPaused) == 0) {
SssPcm *pcm = so->pcm;
SssObject *prev = so->prevPtr;
SssObject *next = so->nextPtr;
so->pcm = 0;
if ((so->flags & kFlagPlaying) != 0) {
if (next) {
next->prevPtr = prev;
}
if (prev) {
prev->nextPtr = next;
} else {
assert(so == _sssObjectsList1);
_sssObjectsList1 = next;
}
--_playingSssObjectsCount;
if (_playingSssObjectsMax > 0) {
if (so == _lowPrioritySssObject || (_playingSssObjectsCount < _playingSssObjectsMax && _lowPrioritySssObject)) {
_lowPrioritySssObject = findLowPrioritySoundObject();
}
}
} else {
if (next) {
next->prevPtr = prev;
}
if (prev) {
prev->nextPtr = next;
} else {
assert(so == _sssObjectsList2);
_sssObjectsList2 = next;
}
}
so->pcm = pcm;
so->flags = (so->flags & ~kFlagPlaying) | kFlagPaused;
prependSoundObjectToList(so);
}
}
void Game::sssOp4_removeSounds(uint32_t flags) {
const uint32_t mask = 1 << (flags >> 24);
*getSssGroupPtr(_res, 1, flags) &= ~mask;
for (SssObject *so = _sssObjectsList1; so; so = so->nextPtr) {
if (compare_bits(so->flags1, flags, 0xFFFF0FFF)) {
so->codeDataStage3 = 0;
if (so->codeDataStage4 == 0) {
removeSoundObjectFromList(so);
}
so->nextSoundBank = -1;
so->delayCounter = -2;
}
}
for (SssObject *so = _sssObjectsList2; so; so = so->nextPtr) {
if (compare_bits(so->flags1, flags, 0xFFFF0FFF)) {
so->codeDataStage3 = 0;
if (so->codeDataStage4 == 0) {
removeSoundObjectFromList(so);
}
so->nextSoundBank = -1;
so->delayCounter = -2;
}
}
while (_sssObjectsCount > 0 && _sssObjectsTable[_sssObjectsCount - 1].pcm == 0) {
--_sssObjectsCount;
}
}
const uint8_t *Game::executeSssCode(SssObject *so, const uint8_t *code, bool tempSssObject) {
while (1) {
debug(kDebug_SOUND, "executeSssCode() code %d", *code);
switch (*code) {
case 0:
return 0;
case 2: // add_sound
if (so->delayCounter >= -1) {
LvlObject *tmp = _currentSoundLvlObject;
_currentSoundLvlObject = so->lvlObject;
createSoundObject(READ_LE_UINT16(code + 2), (int8_t)code[1], so->flags0);
_currentSoundLvlObject = tmp;
}
code += 4;
if (so->pcm == 0) {
return code;
}
break;
case 4: { // remove_sound
const uint8_t sampleIndex = code[1];
const uint16_t bankIndex = READ_LE_UINT16(code + 2);
uint32_t flags = (so->flags0 & 0xFFF0F000);
flags |= ((sampleIndex & 0xF) << 16) | (bankIndex & 0xFFF);
sssOp4_removeSounds(flags);
code += 4;
}
break;
case 5: { // seek_forward
const int32_t frame = READ_LE_UINT32(code + 4);
if (so->currentPcmFrame < frame) {
so->currentPcmFrame = frame;
if (so->pcm) {
const int16_t *ptr = so->pcm->ptr;
if (ptr) {
so->currentPcmPtr = ptr + READ_LE_UINT32(code + 8) / sizeof(int16_t);
}
}
}
code += 12;
}
break;
case 6: { // repeat_jge
--so->repeatCounter;
if (so->repeatCounter < 0) {
code += 8;
} else {
const int32_t offset = READ_LE_UINT32(code + 4);
code -= offset;
}
}
break;
case 8: { // seek_backward_delay
const int32_t frame = READ_LE_UINT32(code + 12);
if (so->currentPcmFrame > frame) {
--so->pauseCounter;
if (so->pauseCounter < 0) {
code += 16;
break;
}
so->currentPcmFrame = READ_LE_UINT32(code + 8);
if (so->pcm) {
const int16_t *ptr = so->pcm->ptr;
if (ptr) {
so->currentPcmPtr = ptr + READ_LE_UINT32(code + 4) / sizeof(int16_t);
}
}
}
return code;
}
break;
case 9: { // modulate_panning
so->panningModulateCurrent += so->panningModulateDelta;
const int panning = (so->panningModulateCurrent + 0x8000) >> 16;
if (panning != so->panning) {
so->panning = panning;
_sssObjectsChanged = true;
}
--so->panningModulateSteps;
if (so->panningModulateSteps >= 0) {
return code;
}
code += 4;
}
break;
case 10: { // modulate_volume
if (so->volumeModulateSteps >= 0) {
so->volumeModulateCurrent += so->volumeModulateDelta;
const int volume = (so->volumeModulateCurrent + 0x8000) >> 16;
if (volume != so->volume) {
so->volume = volume;
_sssObjectsChanged = true;
}
--so->volumeModulateSteps;
if (so->volumeModulateSteps >= 0) {
return code;
}
}
code += 4;
}
break;
case 11: { // set_volume
if (so->volume != code[1]) {
so->volume = code[1];
_sssObjectsChanged = true;
}
code += 4;
}
break;
case 12: { // remove_sounds2
uint32_t va = so->flags1 >> 24;
uint32_t vd = (so->flags1 >> 20) & 0xF;
uint16_t vc = READ_LE_UINT16(code + 2);
sssOp12_removeSounds2(vc, vd, va);
code += 4;
}
break;
case 13: { // init_volume_modulation
const int count = READ_LE_UINT32(code + 4);
so->volumeModulateSteps = count - 1;
const int16_t value = READ_LE_UINT16(code + 2);
if (value == -1) {
so->volumeModulateCurrent = so->volume << 16;
} else {
assert(value >= 0);
so->volumeModulateCurrent = value << 16;
so->volume = value;
_sssObjectsChanged = true;
}
so->volumeModulateDelta = ((code[1] << 16) - so->volumeModulateCurrent) / count;
return code + 8;
}
break;
case 14: { // init_panning_modulation
const int count = READ_LE_UINT32(code + 8);
so->panningModulateSteps = count - 1;
const int16_t value = READ_LE_UINT16(code + 2);
if (value == -1) {
so->panningModulateCurrent = so->panning << 16;
} else {
assert(value >= 0);
so->panningModulateCurrent = value << 16;
so->panning = value;
_sssObjectsChanged = true;
}
so->panningModulateDelta = ((code[1] << 16) - so->panningModulateCurrent) / count;
return code + 12;
}
break;
case 16: { // resume_sound
if (tempSssObject) {
// 'tempSssObject' is allocated on the stack, it must not be added to the linked list
warning("Invalid call to .sss opcode 16 with temporary SssObject");
return 0;
}
--so->pauseCounter;
if (so->pauseCounter >= 0) {
return code;
}
sssOp16_resumeSound(so);
code += 4;
if (so->pcm == 0) {
return code;
}
_sssObjectsChanged = true;
}
break;
case 17: { // pause_sound
if (tempSssObject) {
// 'tempSssObject' is allocated on the stack, it must not be added to the linked list
warning("Invalid call to .sss opcode 17 with temporary SssObject");
return 0;
}
sssOp17_pauseSound(so);
so->pauseCounter = READ_LE_UINT32(code + 4);
return code + 8;
}
break;
case 18: { // decrement_repeat_counter
if (so->repeatCounter < 0) {
so->repeatCounter = READ_LE_UINT32(code + 4);
}
code += 8;
}
break;
case 19: { // set_panning
if (so->panning != code[1]) {
so->panning = code[1];
_sssObjectsChanged = true;
}
code += 4;
}
break;
case 20: { // set_pause_counter
so->pauseCounter = READ_LE_UINT16(code + 2);
code += 4;
}
break;
case 21: { // decrement_delay_counter
--so->delayCounter;
if (so->delayCounter >= 0) {
return code;
}
code += 4;
}
break;
case 22: { // set_delay_counter
so->delayCounter = READ_LE_UINT32(code + 4);
return code + 8;
}
break;
case 23: { // decrement_volume_modulate_steps
--so->volumeModulateSteps;
if (so->volumeModulateSteps >= 0) {
return code;
}
code += 4;
}
break;
case 24: { // set_volume_modulate_steps
so->volumeModulateSteps = READ_LE_UINT32(code + 4);
return code + 8;
}
break;
case 25: { // decrement_panning_modulate_steps
--so->panningModulateSteps;
if (so->panningModulateSteps >= 0) {
return code;
}
code += 4;
}
break;
case 26: { // set_panning_modulate_steps
so->panningModulateSteps = READ_LE_UINT32(code + 4);
return code + 8;
}
break;
case 27: { // seek_backward
const int32_t frame = READ_LE_UINT32(code + 12);
if (so->currentPcmFrame > frame) {
so->currentPcmFrame = READ_LE_UINT32(code + 8);
if (so->pcm) {
const int16_t *ptr = so->pcm->ptr;
if (ptr) {
so->currentPcmPtr = ptr + READ_LE_UINT32(code + 4) / sizeof(int16_t);
}
}
}
return code;
}
break;
case 28: { // jump
const int32_t offset = READ_LE_UINT32(code + 4);
code -= offset;
}
break;
case 29: // end
so->pcmFramesCount = 0;
return 0;
default:
error("Invalid .sss opcode %d", *code);
break;
}
}
return code;
}
SssObject *Game::addSoundObject(SssPcm *pcm, int priority, uint32_t flags_a, uint32_t flags_b) {
int minIndex = -1;
int minPriority = -1;
for (int i = 0; i < kMaxSssObjects; ++i) {
if (!_sssObjectsTable[i].pcm) {
minPriority = 0;
minIndex = i;
break;
}
if (_sssObjectsTable[i].currentPriority < minPriority) {
minPriority = _sssObjectsTable[i].currentPriority;
minIndex = i;
}
}
if (minIndex == -1) {
return 0;
}
assert(minIndex != -1);
SssObject *so = &_sssObjectsTable[minIndex];
if (so->pcm && minPriority >= priority) {
return 0;
}
if (so->pcm) {
removeSoundObjectFromList(so);
}
so->flags1 = flags_a;
so->currentPriority = priority;
so->pcm = pcm;
so->volume = kDefaultSoundVolume;
so->panning = kDefaultSoundPanning;
so->stereo = (pcm->flags & 1) != 0;
so->nextSoundBank = -1;
so->currentPcmFrame = 0;
so->flags = 0;
so->pcmFramesCount = pcm->strideCount;
so->currentPcmPtr = pcm->ptr;
if (!so->currentPcmPtr) {
so->flags |= kFlagPaused;
}
so->flags0 = flags_b;
prependSoundObjectToList(so);
return so->pcm ? so : 0;
}
void Game::prependSoundObjectToList(SssObject *so) {
if (!so->pcm || !so->pcm->ptr) {
so->flags = (so->flags & ~kFlagPlaying) | kFlagPaused;
}
debug(kDebug_SOUND, "prependSoundObjectToList so %p flags 0x%x", so, so->flags);
if (so->flags & kFlagPaused) {
debug(kDebug_SOUND, "Adding so %p to list2 flags 0x%x", so, so->flags);
so->prevPtr = 0;
so->nextPtr = _sssObjectsList2;
if (_sssObjectsList2) {
_sssObjectsList2->prevPtr = so;
}
_sssObjectsList2 = so;
} else {
debug(kDebug_SOUND, "Adding so %p to list1 flags 0x%x", so, so->flags);
SssObject *stopSo = so;
if (so->pcm && so->pcm->ptr) {
if (_playingSssObjectsMax > 0 && _playingSssObjectsCount >= _playingSssObjectsMax) {
if (so->currentPriority > _lowPrioritySssObject->currentPriority) {
stopSo = _lowPrioritySssObject;
debug(kDebug_SOUND, "Removing so %p priority %d", stopSo, stopSo->priority);
SssObject *next = _lowPrioritySssObject->nextPtr;
SssObject *prev = _lowPrioritySssObject->prevPtr;
so->nextPtr = next;
so->prevPtr = prev;
if (next) {
next->prevPtr = so;
}
if (prev) {
prev->nextPtr = so;
} else {
assert(stopSo == _sssObjectsList1);
_sssObjectsList1 = so;
}
_lowPrioritySssObject = findLowPrioritySoundObject();
}
} else {
stopSo = 0;
++_playingSssObjectsCount;
so->nextPtr = _sssObjectsList1;
so->prevPtr = 0;
if (_sssObjectsList1) {
_sssObjectsList1->prevPtr = so;
}
_sssObjectsList1 = so;
if (_playingSssObjectsMax > 0) {
if (_playingSssObjectsCount < _playingSssObjectsMax) {
_lowPrioritySssObject = 0;
} else if (!_lowPrioritySssObject) {
_lowPrioritySssObject = findLowPrioritySoundObject();
} else if (so->currentPriority < _lowPrioritySssObject->currentPriority) {
_lowPrioritySssObject = so;
}
}
}
so->flags |= kFlagPlaying;
}
if (stopSo) {
stopSo->flags &= ~kFlagPlaying;
stopSo->pcm = 0;
updateSssGroup2(stopSo->flags0);
}
}
if (so->num >= _sssObjectsCount) {
_sssObjectsCount = so->num + 1;
}
}
void Game::updateSssGroup2(uint32_t flags) {
const uint32_t mask = 1 << (flags >> 24);
uint32_t *sssGroupPtr = getSssGroupPtr(_res, 2, flags);
if ((*sssGroupPtr & mask) != 0) {
for (SssObject *so = _sssObjectsList1; so; so = so->nextPtr) {
if (compareSssGroup(so->flags0, flags)) {
return;
}
}
for (SssObject *so = _sssObjectsList2; so; so = so->nextPtr) {
if (compareSssGroup(so->flags0, flags)) {
return;
}
}
*sssGroupPtr &= ~mask;
}
}
SssObject *Game::createSoundObject(int bankIndex, int sampleIndex, uint32_t flags) {
debug(kDebug_SOUND, "createSoundObject bank %d sample %d c 0x%x", bankIndex, sampleIndex, flags);
SssObject *ret = 0;
SssBank *bank = &_res->_sssBanksData[bankIndex];
if (sampleIndex < 0) {
if ((bank->flags & 1) != 0) {
if (bank->count <= 0) {
return 0;
}
const int firstSampleIndex = bank->firstSampleIndex;
const SssSample *sample = &_res->_sssSamplesData[firstSampleIndex];
int framesCount = 0;
for (int i = 0; i < bank->count; ++i) {
if (sample->pcm != 0xFFFF) {
SssObject *so = startSoundObject(bankIndex, i, flags);
if (so && so->pcmFramesCount >= framesCount) {
framesCount = so->pcmFramesCount;
ret = so;
}
}
++sample;
}
} else {
uint32_t mask = 1 << (_rnd.update() & 31);
SssUnk6 *s6 = &_res->_sssDataUnk6[bankIndex];
if ((s6->mask & mask) == 0) {
if (mask > s6->mask) {
do {
mask >>= 1;
} while ((s6->mask & mask) == 0);
} else {
do {
mask <<= 1;
} while ((s6->mask & mask) == 0);
}
}
int b = 0;
for (; b < bank->count; ++b) {
if ((s6->unk0[b] & mask) != 0) {
break;
}
}
if ((bank->flags & 2) != 0) {
s6->mask &= ~s6->unk0[b];
if (s6->mask == 0 && bank->count > 0) {
for (int i = 0; i < bank->count; ++i) {
s6->mask |= s6->unk0[i];
}
}
}
ret = startSoundObject(bankIndex, b, flags);
}
if (ret && (bank->flags & 4) != 0) {
ret->nextSoundBank = bankIndex;
ret->nextSoundSample = -1;
}
} else {
ret = startSoundObject(bankIndex, sampleIndex, flags);
if (ret && (bank->flags & 4) != 0) {
ret->nextSoundBank = bankIndex;
ret->nextSoundSample = sampleIndex;
}
}
return ret;
}
SssObject *Game::startSoundObject(int bankIndex, int sampleIndex, uint32_t flags) {
debug(kDebug_SOUND, "startSoundObject bank %d sample %d flags 0x%x", bankIndex, sampleIndex, flags);
SssBank *bank = &_res->_sssBanksData[bankIndex];
const int sampleNum = bank->firstSampleIndex + sampleIndex;
debug(kDebug_SOUND, "startSoundObject sample %d", sampleNum);
const SssSample *sample = &_res->_sssSamplesData[sampleNum];
SssPcm *pcm = &_res->_sssPcmTable[sample->pcm];
if (sample->framesCount != 0) {
SssFilter *filter = &_res->_sssFilters[bank->sssFilter];
const int priority = CLIP(filter->priorityCurrent + sample->initPriority, 0, 7);
uint32_t flags1 = flags & 0xFFF0F000;
flags1 |= ((sampleIndex & 0xF) << 16) | (bankIndex & 0xFFF);
SssObject *so = addSoundObject(pcm, priority, flags1, flags);
if (so) {
if (sample->codeOffset1 == kNone && sample->codeOffset2 == kNone && sample->codeOffset3 == kNone && sample->codeOffset4 == kNone) {
so->flags |= kFlagNoCode;
}
so->codeDataStage1 = (sample->codeOffset1 == kNone) ? 0 : _res->_sssCodeData + sample->codeOffset1;
so->codeDataStage2 = (sample->codeOffset2 == kNone) ? 0 : _res->_sssCodeData + sample->codeOffset2;
so->codeDataStage3 = (sample->codeOffset3 == kNone) ? 0 : _res->_sssCodeData + sample->codeOffset3;
so->codeDataStage4 = (sample->codeOffset4 == kNone) ? 0 : _res->_sssCodeData + sample->codeOffset4;
so->lvlObject = _currentSoundLvlObject;
so->repeatCounter = -1;
so->pauseCounter = -1;
so->delayCounter = -1;
so->volumeModulateSteps = -100;
so->panningModulateSteps = -1;
so->volumeModulateDelta = 0;
so->panningModulateDelta = 0;
so->flags0 = flags;
so->pcmFramesCount = sample->framesCount;
so->bankIndex = bankIndex;
so->priority = sample->initPriority;
so->filter = filter;
so->volume = sample->initVolume;
so->panning = sample->initPanning;
if (sample->initPanning == -1) {
if (_currentSoundLvlObject) {
_currentSoundLvlObject->sssObject = so;
so->panningPtr = &_snd_masterPanning;
so->panning = getSoundObjectPanning(so);
} else {
so->panningPtr = 0;
so->panning = kDefaultSoundPanning;
}
} else {
so->panningPtr = 0;
}
setSoundObjectPanning(so);
if (so->pcm) {
updateSoundObject(so);
return so;
}
}
return 0;
}
SssObject tmpObj;
memset(&tmpObj, 0, sizeof(tmpObj));
tmpObj.flags0 = flags;
tmpObj.flags1 = flags;
tmpObj.bankIndex = bankIndex;
tmpObj.repeatCounter = -1;
tmpObj.pauseCounter = -1;
tmpObj.lvlObject = _currentSoundLvlObject;
tmpObj.panningPtr = 0;
debug(kDebug_SOUND, "startSoundObject dpcm %d", sample->pcm);
tmpObj.pcm = pcm;
if (sample->codeOffset1 != kNone) {
const uint8_t *code = _res->_sssCodeData + sample->codeOffset1;
executeSssCode(&tmpObj, code, true);
}
updateSssGroup2(flags);
return 0;
}
SssObject *Game::playSoundObject(SssInfo *s, int source, int mask) {
debug(kDebug_SOUND, "playSoundObject num %d lut 0x%x mask 0x%x", s->sssBankIndex, source, mask);
if (_sssDisabled) {
return 0;
}
const int filterIndex = _res->_sssBanksData[s->sssBankIndex].sssFilter;
SssFilter *filter = &_res->_sssFilters[filterIndex];
bool found = false;
for (int i = 0; i < _sssObjectsCount; ++i) {
SssObject *so = &_sssObjectsTable[i];
if (so->pcm != 0 && so->filter == filter) {
found = true;
break;
}
}
int va, vc;
va = s->targetVolume << 16;
vc = filter->volumeCurrent;
if (vc != va) {
if (!found) {
filter->volumeCurrent = va;
} else {
filter->volumeSteps = 4;
filter->changed = true;
filter->volumeDelta = (va - vc) / 4;
}
}
va = s->targetPanning << 16;
vc = filter->panningCurrent;
if (vc != va) {
if (!found) {
filter->panningCurrent = va;
} else {
filter->panningSteps = 4;
filter->changed = true;
filter->panningDelta = (va - vc) / 4;
}
}
va = s->targetPriority;
vc = filter->priorityCurrent;
if (vc != va) {
filter->priorityCurrent = va;
for (int i = 0; i < _sssObjectsCount; ++i) {
SssObject *so = &_sssObjectsTable[i];
if (so->pcm != 0 && so->filter == filter) {
so->currentPriority = CLIP(va + so->priority, 0, 7);
if (_playingSssObjectsMax > 0) {
setLowPrioritySoundObject(so);
}
}
}
}
const uint32_t ve = sssGroupValue(source, mask, s);
const uint8_t _al = s->concurrencyMask;
if (_al & 2) {
const uint32_t mask = 1 << (ve >> 24);
uint32_t *sssGroupPtr3 = getSssGroupPtr(_res, 3, ve);
*sssGroupPtr3 |= mask;
uint32_t *sssGroupPtr2 = getSssGroupPtr(_res, 2, ve);
if (*sssGroupPtr2 & mask) {
return 0;
}
*sssGroupPtr2 |= mask;
} else if (_al & 1) {
const uint32_t mask = 1 << (ve >> 24);
uint32_t *sssGroupPtr1 = getSssGroupPtr(_res, 1, ve);
if (*sssGroupPtr1 & mask) {
return 0;
}
*sssGroupPtr1 |= mask;
} else if (_al & 4) {
for (SssObject *so = _sssObjectsList1; so; so = so->nextPtr) {
if (compareSssGroup(so->flags0, ve)) {
return 0;
}
}
for (SssObject *so = _sssObjectsList2; so; so = so->nextPtr) {
if (compareSssGroup(so->flags0, ve)) {
return 0;
}
}
}
return createSoundObject(s->sssBankIndex, s->sampleIndex, ve);
}
void Game::clearSoundObjects() {
memset(_sssObjectsTable, 0, sizeof(_sssObjectsTable));
_sssObjectsList1 = 0;
_sssObjectsList2 = 0;
_lowPrioritySssObject = 0;
for (int i = 0; i < kMaxSssObjects; ++i) {
_sssObjectsTable[i].num = i;
}
_sssObjectsCount = 0;
_playingSssObjectsCount = 0;
_snd_bufferOffset = _snd_bufferSize = 0;
_mix._mixingQueueSize = 0;
if (_res->_sssHdr.infosDataCount != 0) {
const int size = _res->_sssHdr.banksDataCount * sizeof(uint32_t);
for (int i = 0; i < 3; ++i) {
memset(_res->_sssGroup1[i], 0, size);
memset(_res->_sssGroup2[i], 0, size);