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sm64pc/src/audio/seqplayer.c

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initial commit
2020-05-05 12:15:53 +00:00
#include <ultra64.h>
#include <macros.h>
#include "memory.h"
#include "data.h"
#include "load.h"
#include "seqplayer.h"
#include "external.h"
#include "effects.h"
#define PORTAMENTO_IS_SPECIAL(x) ((x).mode & 0x80)
#define PORTAMENTO_MODE(x) ((x).mode & ~0x80)
#define PORTAMENTO_MODE_1 1
#define PORTAMENTO_MODE_2 2
#define PORTAMENTO_MODE_3 3
#define PORTAMENTO_MODE_4 4
#define PORTAMENTO_MODE_5 5
void seq_channel_layer_process_script(struct SequenceChannelLayer *layer);
void sequence_channel_process_script(struct SequenceChannel *seqChannel);
void sequence_channel_init(struct SequenceChannel *seqChannel) {
s32 i;
seqChannel->enabled = FALSE;
seqChannel->finished = FALSE;
seqChannel->stopScript = FALSE;
seqChannel->stopSomething2 = FALSE;
seqChannel->hasInstrument = FALSE;
seqChannel->stereoHeadsetEffects = FALSE;
seqChannel->transposition = 0;
seqChannel->largeNotes = FALSE;
seqChannel->scriptState.depth = 0;
seqChannel->volume = 1.0f;
seqChannel->volumeScale = 1.0f;
seqChannel->freqScale = 1.0f;
seqChannel->pan = 0.5f;
seqChannel->panChannelWeight = 1.0f;
seqChannel->noteUnused = NULL;
seqChannel->reverb = 0;
seqChannel->notePriority = NOTE_PRIORITY_DEFAULT;
seqChannel->delay = 0;
seqChannel->adsr.envelope = gDefaultEnvelope;
seqChannel->adsr.releaseRate = 0x20;
seqChannel->adsr.sustain = 0;
seqChannel->updatesPerFrameUnused = gAudioUpdatesPerFrame;
seqChannel->vibratoRateTarget = 0x800;
seqChannel->vibratoRateStart = 0x800;
seqChannel->vibratoExtentTarget = 0;
seqChannel->vibratoExtentStart = 0;
seqChannel->vibratoRateChangeDelay = 0;
seqChannel->vibratoExtentChangeDelay = 0;
seqChannel->vibratoDelay = 0;
for (i = 0; i < 8; i++) {
seqChannel->soundScriptIO[i] = -1;
}
seqChannel->unused = FALSE;
init_note_lists(&seqChannel->notePool);
}
s32 seq_channel_set_layer(struct SequenceChannel *seqChannel, s32 layerIndex) {
struct SequenceChannelLayer *layer;
if (seqChannel->layers[layerIndex] == NULL) {
layer = audio_list_pop_back(&gLayerFreeList);
seqChannel->layers[layerIndex] = layer;
if (layer == NULL) {
seqChannel->layers[layerIndex] = NULL;
return -1;
}
} else {
seq_channel_layer_note_decay(seqChannel->layers[layerIndex]);
}
layer = seqChannel->layers[layerIndex];
layer->seqChannel = seqChannel;
layer->adsr = seqChannel->adsr;
layer->adsr.releaseRate = 0;
layer->enabled = TRUE;
layer->stopSomething = FALSE;
layer->continuousNotes = FALSE;
layer->finished = FALSE;
layer->portamento.mode = 0;
layer->scriptState.depth = 0;
layer->status = SOUND_LOAD_STATUS_NOT_LOADED;
layer->noteDuration = 0x80;
layer->transposition = 0;
layer->delay = 0;
layer->duration = 0;
layer->delayUnused = 0;
layer->note = NULL;
layer->instrument = NULL;
layer->velocitySquare = 0.0f;
layer->pan = 0.5f;
return 0;
}
void seq_channel_layer_disable(struct SequenceChannelLayer *layer) {
if (layer != NULL) {
seq_channel_layer_note_decay(layer);
layer->enabled = FALSE;
layer->finished = TRUE;
}
}
void seq_channel_layer_free(struct SequenceChannel *seqChannel, s32 layerIndex) {
struct SequenceChannelLayer *layer = seqChannel->layers[layerIndex];
struct AudioListItem *item;
if (layer != NULL) {
// push to end of list
item = &layer->listItem;
if (item->prev == NULL) {
// TODO: probably a macro?
gLayerFreeList.prev->next = item;
item->prev = gLayerFreeList.prev;
item->next = &gLayerFreeList;
gLayerFreeList.prev = item;
gLayerFreeList.u.count++;
item->pool = gLayerFreeList.pool;
}
seq_channel_layer_disable(layer);
seqChannel->layers[layerIndex] = NULL;
}
}
void sequence_channel_disable(struct SequenceChannel *seqChannel) {
s32 i;
for (i = 0; i < LAYERS_MAX; i++) {
seq_channel_layer_free(seqChannel, i);
}
note_pool_clear(&seqChannel->notePool);
seqChannel->enabled = FALSE;
seqChannel->finished = TRUE;
}
struct SequenceChannel *allocate_sequence_channel(void) {
s32 i;
for (i = 0; i < ARRAY_COUNT(gSequenceChannels); i++) {
if (gSequenceChannels[i].seqPlayer == NULL) {
return gSequenceChannels + i;
}
}
return &gSequenceChannelNone;
}
void sequence_player_init_channels(struct SequencePlayer *seqPlayer, u16 channelBits) {
struct SequenceChannel *seqChannel;
s32 i;
for (i = 0; i < CHANNELS_MAX; i++) {
if (channelBits & 1) {
seqChannel = seqPlayer->channels[i];
if (IS_SEQUENCE_CHANNEL_VALID(seqChannel) == TRUE && seqChannel->seqPlayer == seqPlayer) {
sequence_channel_disable(seqChannel);
seqChannel->seqPlayer = NULL;
}
seqChannel = allocate_sequence_channel();
if (IS_SEQUENCE_CHANNEL_VALID(seqChannel) == FALSE) {
gAudioErrorFlags = i + 0x10000;
seqPlayer->channels[i] = seqChannel;
} else {
sequence_channel_init(seqChannel);
seqPlayer->channels[i] = seqChannel;
seqChannel->seqPlayer = seqPlayer;
seqChannel->bankId = seqPlayer->defaultBank[0];
seqChannel->muteBehavior = seqPlayer->muteBehavior;
seqChannel->noteAllocPolicy = seqPlayer->noteAllocPolicy;
}
}
channelBits >>= 1;
}
}
void sequence_player_disable_channels(struct SequencePlayer *seqPlayer, u16 channelBits) {
struct SequenceChannel *seqChannel;
s32 i;
for (i = 0; i < CHANNELS_MAX; i++) {
if (channelBits & 1) {
seqChannel = seqPlayer->channels[i];
if (IS_SEQUENCE_CHANNEL_VALID(seqChannel) == TRUE) {
if (seqChannel->seqPlayer == seqPlayer) {
sequence_channel_disable(seqChannel);
seqChannel->seqPlayer = NULL;
}
seqPlayer->channels[i] = &gSequenceChannelNone;
}
}
channelBits >>= 1;
}
}
void sequence_channel_enable(struct SequencePlayer *seqPlayer, u8 channelIndex, void *arg2) {
struct SequenceChannel *seqChannel = seqPlayer->channels[channelIndex];
s32 i;
if (IS_SEQUENCE_CHANNEL_VALID(seqChannel) != FALSE) {
seqChannel->enabled = TRUE;
seqChannel->finished = FALSE;
seqChannel->scriptState.depth = 0;
seqChannel->scriptState.pc = arg2;
seqChannel->delay = 0;
for (i = 0; i < LAYERS_MAX; i++) {
if (seqChannel->layers[i] != NULL) {
seq_channel_layer_free(seqChannel, i);
}
}
}
}
void sequence_player_disable(struct SequencePlayer *seqPlayer) {
sequence_player_disable_channels(seqPlayer, 0xffff);
note_pool_clear(&seqPlayer->notePool);
seqPlayer->finished = TRUE;
seqPlayer->enabled = FALSE;
if (IS_SEQ_LOAD_COMPLETE(seqPlayer->seqId)) {
gSeqLoadStatus[seqPlayer->seqId] = SOUND_LOAD_STATUS_DISCARDABLE;
}
if (IS_BANK_LOAD_COMPLETE(seqPlayer->defaultBank[0])) {
gBankLoadStatus[seqPlayer->defaultBank[0]] = SOUND_LOAD_STATUS_DISCARDABLE;
}
// (Note that if this is called from alloc_bank_or_seq, the side will get swapped
// later in that function. Thus, we signal that we want to load into the slot
// of the bank that we no longer need.)
if (gBankLoadedPool.temporary.entries[0].id == seqPlayer->defaultBank[0]) {
gBankLoadedPool.temporary.nextSide = 1;
} else if (gBankLoadedPool.temporary.entries[1].id == seqPlayer->defaultBank[0]) {
gBankLoadedPool.temporary.nextSide = 0;
}
}
/**
* Add an item to the end of a list, if it's not already in any list.
*/
void audio_list_push_back(struct AudioListItem *list, struct AudioListItem *item) {
if (item->prev == NULL) {
list->prev->next = item;
item->prev = list->prev;
item->next = list;
list->prev = item;
list->u.count++;
item->pool = list->pool;
}
}
/**
* Remove the last item from a list, and return it (or NULL if empty).
*/
void *audio_list_pop_back(struct AudioListItem *list) {
struct AudioListItem *item = list->prev;
if (item == list) {
return NULL;
}
item->prev->next = list;
list->prev = item->prev;
item->prev = NULL;
list->u.count--;
return item->u.value;
}
void init_layer_freelist(void) {
s32 i;
gLayerFreeList.prev = &gLayerFreeList;
gLayerFreeList.next = &gLayerFreeList;
gLayerFreeList.u.count = 0;
gLayerFreeList.pool = NULL;
for (i = 0; i < ARRAY_COUNT(gSequenceLayers); i++) {
gSequenceLayers[i].listItem.u.value = gSequenceLayers + i;
gSequenceLayers[i].listItem.prev = NULL;
audio_list_push_back(&gLayerFreeList, &gSequenceLayers[i].listItem);
}
}
u8 m64_read_u8(struct M64ScriptState *state) {
u8 *midiArg = state->pc++;
return *midiArg;
}
s16 m64_read_s16(struct M64ScriptState *state) {
s16 ret = *(state->pc++) << 8;
ret = *(state->pc++) | ret;
return ret;
}
u16 m64_read_compressed_u16(struct M64ScriptState *state) {
u16 ret = *(state->pc++);
if (ret & 0x80) {
ret = (ret << 8) & 0x7f00;
ret = *(state->pc++) | ret;
}
return ret;
}
#ifdef NON_MATCHING
void seq_channel_layer_process_script(struct SequenceChannelLayer *layer) {
struct SequencePlayer *seqPlayer; // sp5C, t4
struct SequenceChannel *seqChannel; // sp58, t5
struct M64ScriptState *state; // v0
struct AdsrSettings *adsr; // v0
struct Portamento *portamento; // v0
struct Instrument **instOut; // a1
struct Instrument *inst; // a0
struct AudioBankSound *sound; // v0
struct Instrument *instrument; // v1
struct Drum *drum;
u8 sameSound; // sp3F
u8 cmd; // a0
u8 allocNewNote; // sp3D, t0
u8 loBits;
u16 sp3A; // t2, a0, a1
s32 vel; // sp30, t3
f32 freqScale; // sp28, f0
f32 sp24;
u8 temp8;
u8 *old;
u8 *old2;
u8 semitone; // v0
u8 usedSemitone; // a1
f32 temp_f12;
f32 temp_f2;
s32 temp_a0_5;
u8 drumIndex; // t0
s32 cmdBase; // t1
u8 temp_a0_6;
u8 portamentoTargetNote; // t7
s32 bankId; // a3
u8 instId; // v0
s32 cmdSemitone; // v1
f32 tuning; // f0
sameSound = TRUE;
if (layer->enabled == FALSE) {
return;
}
if (layer->delay > 1) {
layer->delay--;
if (!layer->stopSomething && layer->delay <= layer->duration) {
seq_channel_layer_note_decay(layer);
layer->stopSomething = TRUE;
}
return;
}
if (!layer->continuousNotes) {
seq_channel_layer_note_decay(layer);
}
if (PORTAMENTO_MODE(layer->portamento) == PORTAMENTO_MODE_1 ||
PORTAMENTO_MODE(layer->portamento) == PORTAMENTO_MODE_2) {
layer->portamento.mode = 0;
}
seqChannel = layer->seqChannel;
seqPlayer = seqChannel->seqPlayer;
for (;;) {
// (Moving state outside the loop improves initial regalloc, but is wrong)
state = &layer->scriptState;
old2 = state->pc++;
cmd = *old2;
if (cmd <= 0xc0) {
break;
}
switch (cmd) {
case 0xff: // layer_end; function return or end of script
if (state->depth == 0) {
// N.B. this function call is *not* inlined even though it's
// within the same file, unlike in the rest of this function.
seq_channel_layer_disable(layer);
return;
}
state->depth--, state->pc = state->stack[state->depth];
break;
case 0xfc: // layer_call
// Something is wrong with the codegen here... It almost looks like
// it's inlining m64_read_s16, but it lacks a s16 cast.
// Maybe they did macro-based inlining since there are more layers
// than channels or sequences, making the code hotter.
sp3A = *(state->pc++) << 8;
sp3A = *(state->pc++) | sp3A;
state->depth++;
state->stack[state->depth - 1] = state->pc;
state->pc = seqPlayer->seqData + sp3A;
break;
case 0xf8: // layer_loop; loop start, N iterations (or 256 if N = 0)
old = state->pc++;
state->remLoopIters[state->depth] = *old;
state->depth++;
state->stack[state->depth - 1] = state->pc;
break;
case 0xf7: // layer_loopend
state->remLoopIters[state->depth - 1]--;
if (state->remLoopIters[state->depth - 1] != 0) {
state->pc = state->stack[state->depth - 1];
} else {
state->depth--;
}
break;
case 0xfb: // layer_jump
sp3A = *(state->pc++) << 8;
sp3A = *(state->pc++) | sp3A;
state->pc = seqPlayer->seqData + sp3A;
break;
case 0xc1: // layer_setshortnotevelocity
case 0xca: // layer_setpan
temp_a0_5 = *(state->pc++);
if (cmd == 0xc1) {
layer->velocitySquare = (f32)(temp_a0_5 * temp_a0_5);
} else {
layer->pan = (f32) temp_a0_5 / US_FLOAT(128.0);
}
break;
case 0xc2: // layer_transpose; set transposition in semitones
case 0xc9: // layer_setshortnoteduration
temp_a0_6 = *(state->pc++);
if (cmd == 0xc9) {
layer->noteDuration = temp_a0_6;
} else {
layer->transposition = temp_a0_6;
}
break;
case 0xc4: // layer_somethingon
case 0xc5: // layer_somethingoff
if (cmd == 0xc4) {
temp8 = TRUE;
} else {
temp8 = FALSE;
}
layer->continuousNotes = temp8;
seq_channel_layer_note_decay(layer);
break;
case 0xc3: // layer_setshortnotedefaultplaypercentage
// This doesn't match very well... sp3A is definitely set here
// (it's falsely preserved until after the loop), but maybe there's
// also inlining going on, with sp3A as a temp variable being used
// for no good reason? Or it could just be a macro.
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
layer->shortNoteDefaultPlayPercentage = sp3A;
break;
case 0xc6: // layer_setinstr
old = state->pc++;
instId = *old;
// The rest of this case is identical to
// if (instId < 0x7f) {
// get_instrument(seqChannel, instId, &layer->instrument, &layer->adsr);
// }
// except without seqChannelCpy...
// interestingly, get_instrument comes just *after* this function,
// which I think wouldn't be the case with __inline (maybe if they
// both inline a common helper?)
if (instId >= 0x7f) {
break;
}
bankId = seqChannel->bankId; // maybe a temp, to match get_instrument
if (instId >= gCtlEntries[bankId].numInstruments) {
instId = gCtlEntries[bankId].numInstruments;
if (instId == 0) {
break;
}
instId--;
}
instOut = &layer->instrument;
inst = gCtlEntries[bankId].instruments[instId];
if (inst == NULL) {
while (instId != 0xff) {
inst = gCtlEntries[bankId].instruments[instId];
if (inst != NULL) {
break;
}
instId--;
}
}
adsr = &layer->adsr;
if (((uintptr_t) gBankLoadedPool.persistent.pool.start <= (uintptr_t) inst
&& (uintptr_t) inst <= (uintptr_t)(gBankLoadedPool.persistent.pool.start
+ gBankLoadedPool.persistent.pool.size))
|| ((uintptr_t) gBankLoadedPool.temporary.pool.start <= (uintptr_t) inst
&& (uintptr_t) inst <= (uintptr_t)(gBankLoadedPool.temporary.pool.start
+ gBankLoadedPool.temporary.pool.size))) {
adsr->envelope = inst->envelope;
adsr->releaseRate = inst->releaseRate;
*instOut = inst;
// instId++;
} else {
gAudioErrorFlags = instId + 0x20000;
*instOut = NULL;
}
break;
case 0xc7: // layer_portamento
old = state->pc++;
layer->portamento.mode = *old;
old = state->pc++;
portamentoTargetNote = *old + seqChannel->transposition +
layer->transposition + seqPlayer->transposition;
if (portamentoTargetNote >= 0x80) {
portamentoTargetNote = 0;
}
layer->portamentoTargetNote = portamentoTargetNote;
// If special, the next param is u8 instead of var
if (PORTAMENTO_IS_SPECIAL(layer->portamento)) {
layer->portamentoTime = *(state->pc++);
break;
}
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
layer->portamentoTime = sp3A;
break;
case 0xc8: // layer_disableportamento
layer->portamento.mode = 0;
break;
default:
loBits = cmd & 0xf;
switch (cmd & 0xf0) {
case 0xd0: // layer_setshortnotevelocityfromtable
sp3A = seqPlayer->shortNoteVelocityTable[loBits];
layer->velocitySquare = (f32)(sp3A * sp3A);
break;
case 0xe0: // layer_setshortnotedurationfromtable
layer->noteDuration = seqPlayer->shortNoteDurationTable[loBits];
break;
}
}
}
state = &layer->scriptState;
if (cmd == 0xc0) // layer_delay
{
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
layer->delay = sp3A;
layer->stopSomething = TRUE;
} else {
layer->stopSomething = FALSE;
if (seqChannel->largeNotes == TRUE) {
cmdBase = cmd & 0xc0;
// phi_a0_3 = sp3A; // real assignment, or same vars?
state = &layer->scriptState;
switch (cmdBase) {
case 0x00: // layer_note0 (play percentage, velocity, duration)
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
vel = *(state->pc++);
layer->noteDuration = *(state->pc++);
layer->playPercentage = sp3A;
break;
case 0x40: // layer_note1 (play percentage, velocity)
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
vel = *(state->pc++);
layer->noteDuration = 0;
layer->playPercentage = sp3A;
break;
case 0x80: // layer_note2 (velocity, duration; uses last play percentage)
vel = *(state->pc++);
layer->noteDuration = *(state->pc++);
sp3A = layer->playPercentage;
break;
}
layer->velocitySquare = vel * vel;
cmdSemitone = cmd - cmdBase;
} else {
cmdBase = cmd & 0xc0;
state = &layer->scriptState;
// phi_a0_3 = sp3A;
switch (cmdBase) {
case 0x00: // play note, type 0 (play percentage)
sp3A = *(state->pc++);
if (sp3A & 0x80) {
sp3A = (sp3A << 8) & 0x7f00;
sp3A = *(state->pc++) | sp3A;
}
layer->playPercentage = sp3A;
break;
case 0x40: // play note, type 1 (uses default play percentage)
sp3A = layer->shortNoteDefaultPlayPercentage;
break;
case 0x80: // play note, type 2 (uses last play percentage)
sp3A = layer->playPercentage;
break;
}
cmdSemitone = cmd - cmdBase;
}
layer->delay = sp3A;
layer->duration = layer->noteDuration * sp3A / 256;
if ((seqPlayer->muted && (seqChannel->muteBehavior & MUTE_BEHAVIOR_STOP_NOTES) != 0)
|| seqChannel->stopSomething2 || !seqChannel->hasInstrument) {
layer->stopSomething = TRUE;
} else {
if (seqChannel->instOrWave == 0) { // drum
drumIndex = cmdSemitone + seqChannel->transposition + layer->transposition;
if (drumIndex >= gCtlEntries[seqChannel->bankId].numDrums) {
drumIndex = gCtlEntries[seqChannel->bankId].numDrums;
if (drumIndex == 0) {
// this goto looks a bit like a function return...
layer->stopSomething = TRUE;
goto skip;
}
drumIndex--;
}
drum = gCtlEntries[seqChannel->bankId].drums[drumIndex];
if (drum == NULL) {
layer->stopSomething = TRUE;
} else {
layer->adsr.envelope = drum->envelope;
layer->adsr.releaseRate = drum->releaseRate;
layer->pan = FLOAT_CAST(drum->pan) / US_FLOAT(128.0);
layer->sound = &drum->sound;
layer->freqScale = layer->sound->tuning;
}
skip:;
} else { // instrument
semitone = cmdSemitone + seqPlayer->transposition + seqChannel->transposition
+ layer->transposition;
if (semitone >= 0x80) {
layer->stopSomething = TRUE;
} else {
instrument = layer->instrument;
if (layer->instrument == NULL) {
instrument = seqChannel->instrument;
}
if (layer->portamento.mode != 0) {
usedSemitone = layer->portamentoTargetNote;
if (usedSemitone < semitone) {
usedSemitone = semitone;
}
if (instrument != NULL) {
if (usedSemitone < instrument->normalRangeLo) {
sound = &instrument->lowNotesSound;
} else if (usedSemitone <= instrument->normalRangeHi) {
sound = &instrument->normalNotesSound;
} else {
sound = &instrument->highNotesSound;
}
sameSound = (sound == layer->sound);
layer->sound = sound;
tuning = sound->tuning;
} else {
layer->sound = NULL;
tuning = 1.0f;
}
temp_f2 = gNoteFrequencies[semitone] * tuning;
temp_f12 = gNoteFrequencies[layer->portamentoTargetNote] * tuning;
portamento = &layer->portamento;
switch (PORTAMENTO_MODE(layer->portamento)) {
case PORTAMENTO_MODE_1:
case PORTAMENTO_MODE_3:
case PORTAMENTO_MODE_5:
sp24 = temp_f2;
freqScale = temp_f12;
break;
case PORTAMENTO_MODE_2:
case PORTAMENTO_MODE_4:
sp24 = temp_f12;
freqScale = temp_f2;
break;
}
portamento->extent = sp24 / freqScale - US_FLOAT(1.0);
if (PORTAMENTO_IS_SPECIAL(layer->portamento)) {
portamento->speed = US_FLOAT(32512.0) * FLOAT_CAST(seqPlayer->tempo)
/ ((f32) layer->delay * (f32) gTempoInternalToExternal
* FLOAT_CAST(layer->portamentoTime));
} else {
portamento->speed = US_FLOAT(127.0) / FLOAT_CAST(layer->portamentoTime);
}
portamento->cur = 0.0f;
layer->freqScale = freqScale;
if (PORTAMENTO_MODE(layer->portamento) == PORTAMENTO_MODE_5) {
layer->portamentoTargetNote = semitone;
}
} else if (instrument != NULL) {
if (semitone < instrument->normalRangeLo) {
sound = &instrument->lowNotesSound;
} else if (semitone <= instrument->normalRangeHi) {
sound = &instrument->normalNotesSound;
} else {
sound = &instrument->highNotesSound;
}
sameSound = (sound == layer->sound);
layer->sound = sound;
layer->freqScale = sound->tuning * gNoteFrequencies[semitone];
} else {
layer->sound = NULL;
layer->freqScale = gNoteFrequencies[semitone];
}
}
}
layer->delayUnused = layer->delay;
}
}
if (layer->stopSomething == TRUE) {
if (layer->note != NULL || layer->continuousNotes) {
seq_channel_layer_note_decay(layer);
}
return;
}
if (!layer->continuousNotes) {
allocNewNote = TRUE;
} else if (layer->note == NULL || layer->status == SOUND_LOAD_STATUS_NOT_LOADED) {
allocNewNote = TRUE;
} else if (sameSound == FALSE) {
seq_channel_layer_note_decay(layer);
allocNewNote = TRUE;
} else {
allocNewNote = FALSE;
if (layer->sound == NULL) {
init_synthetic_wave(layer->note, layer);
}
}
if (allocNewNote != FALSE) {
layer->note = alloc_note(layer);
}
if (layer->note != NULL && layer->note->parentLayer == layer) {
note_vibrato_init(layer->note);
}
}
#elif defined(VERSION_JP)
GLOBAL_ASM("asm/non_matchings/seq_channel_layer_process_script_jp.s")
#else
GLOBAL_ASM("asm/non_matchings/seq_channel_layer_process_script_us.s")
#endif
u8 get_instrument(struct SequenceChannel *seqChannel, u8 instId, struct Instrument **instOut,
struct AdsrSettings *adsr) {
struct Instrument *inst;
UNUSED u32 pad;
if (instId >= gCtlEntries[seqChannel->bankId].numInstruments) {
instId = gCtlEntries[seqChannel->bankId].numInstruments;
if (instId == 0) {
return 0;
}
instId--;
}
inst = gCtlEntries[seqChannel->bankId].instruments[instId];
if (inst == NULL) {
struct SequenceChannel seqChannelCpy = *seqChannel;
while (instId != 0xff) {
inst = gCtlEntries[seqChannelCpy.bankId].instruments[instId];
if (inst != NULL) {
break;
}
instId--;
}
}
if (((uintptr_t) gBankLoadedPool.persistent.pool.start <= (uintptr_t) inst
&& (uintptr_t) inst <= (uintptr_t)(gBankLoadedPool.persistent.pool.start
+ gBankLoadedPool.persistent.pool.size))
|| ((uintptr_t) gBankLoadedPool.temporary.pool.start <= (uintptr_t) inst
&& (uintptr_t) inst <= (uintptr_t)(gBankLoadedPool.temporary.pool.start
+ gBankLoadedPool.temporary.pool.size))) {
adsr->envelope = inst->envelope;
adsr->releaseRate = inst->releaseRate;
*instOut = inst;
instId++;
return instId;
}
gAudioErrorFlags = instId + 0x20000;
*instOut = NULL;
return 0;
}
void set_instrument(struct SequenceChannel *seqChannel, u8 instId) {
if (instId >= 0x80) {
seqChannel->instOrWave = instId;
seqChannel->instrument = NULL;
} else if (instId == 0x7f) {
seqChannel->instOrWave = 0;
seqChannel->instrument = (struct Instrument *) 1;
} else {
seqChannel->instOrWave =
get_instrument(seqChannel, instId, &seqChannel->instrument, &seqChannel->adsr);
if (seqChannel->instOrWave == 0) {
seqChannel->hasInstrument = FALSE;
return;
}
}
seqChannel->hasInstrument = TRUE;
}
void sequence_channel_set_volume(struct SequenceChannel *seqChannel, u8 volume) {
seqChannel->volume = FLOAT_CAST(volume) / US_FLOAT(127.0);
}
#ifdef NON_MATCHING
void sequence_channel_process_script(struct SequenceChannel *seqChannel) {
u16 sp5A;
s8 value; // sp53
u8 sp38;
u8 cmd; // v1, s1
u8 loBits; // t0, a0
struct M64ScriptState *state;
struct SequencePlayer *seqPlayer;
u8 temp;
s8 tempSigned;
s32 offset;
s32 i;
u8 temp2;
if (!seqChannel->enabled) {
return;
}
if (seqChannel->stopScript) {
for (i = 0; i < LAYERS_MAX; i++) {
if (seqChannel->layers[i] != NULL) {
seq_channel_layer_process_script(seqChannel->layers[i]);
}
}
return;
}
seqPlayer = seqChannel->seqPlayer;
if (seqPlayer->muted && (seqChannel->muteBehavior & MUTE_BEHAVIOR_STOP_SCRIPT) != 0) {
return;
}
if (seqChannel->delay != 0) {
seqChannel->delay--;
}
state = &seqChannel->scriptState;
if (seqChannel->delay == 0) {
for (;;) {
cmd = m64_read_u8(state);
if (cmd == 0xff) // chan_end
{
// This fixes a reordering in 'case 0x90', somehow
sp5A = state->depth;
if (sp5A == 0) {
sequence_channel_disable(seqChannel);
break;
}
state->depth--, state->pc = state->stack[state->depth];
}
if (cmd == 0xfe) // chan_delay1
{
break;
}
if (cmd == 0xfd) // chan_delay
{
seqChannel->delay = m64_read_compressed_u16(state);
break;
}
if (cmd == 0xf3) // chan_hang
{
seqChannel->stopScript = TRUE;
break;
}
// (new_var = cmd fixes order of s1/s2, but causes a reordering
// towards the bottom of the function)
if (cmd > 0xc0) {
switch (cmd) {
case 0xfc: // chan_call
sp5A = m64_read_s16(state);
state->depth++, state->stack[state->depth - 1] = state->pc;
state->pc = seqPlayer->seqData + sp5A;
break;
case 0xf8: // chan_loop; loop start, N iterations (or 256 if N = 0)
state->remLoopIters[state->depth] = m64_read_u8(state);
state->depth++, state->stack[state->depth - 1] = state->pc;
break;
case 0xf7: // chan_loopend
state->remLoopIters[state->depth - 1]--;
if (state->remLoopIters[state->depth - 1] != 0) {
state->pc = state->stack[state->depth - 1];
} else {
state->depth--;
}
break;
case 0xf6: // chan_break; break loop, if combined with jump
state->depth--;
break;
case 0xfb: // chan_jump
case 0xfa: // chan_beqz
case 0xf9: // chan_bltz
case 0xf5: // chan_bgez
sp5A = m64_read_s16(state);
if (cmd == 0xfa && value != 0)
break;
if (cmd == 0xf9 && value >= 0)
break;
if (cmd == 0xf5 && value < 0)
break;
state->pc = seqPlayer->seqData + sp5A;
break;
case 0xf2: // chan_reservenotes
// seqChannel->notePool should live in a saved register
note_pool_clear(&seqChannel->notePool);
temp = m64_read_u8(state);
note_pool_fill(&seqChannel->notePool, temp);
break;
case 0xf1: // chan_unreservenotes
note_pool_clear(&seqChannel->notePool);
break;
case 0xc2: // chan_setdyntable
sp5A = m64_read_s16(state);
seqChannel->dynTable = (void *) (seqPlayer->seqData + sp5A);
break;
case 0xc5: // chan_dynsetdyntable
if (value != -1) {
sp5A = (*seqChannel->dynTable)[value][1]
+ ((*seqChannel->dynTable)[value][0] << 8);
seqChannel->dynTable = (void *) (seqPlayer->seqData + sp5A);
}
break;
case 0xc1: // chan_setinstr ("set program"?)
set_instrument(seqChannel, m64_read_u8(state));
break;
case 0xc3: // chan_largenotesoff
seqChannel->largeNotes = FALSE;
break;
case 0xc4: // chan_largenoteson
seqChannel->largeNotes = TRUE;
break;
case 0xdf: // chan_setvol
sequence_channel_set_volume(seqChannel, m64_read_u8(state));
break;
case 0xe0: // chan_setvolscale
seqChannel->volumeScale = FLOAT_CAST(m64_read_u8(state)) / US_FLOAT(128.0);
break;
case 0xde: // chan_freqscale; pitch bend using raw frequency multiplier N/2^15 (N is u16)
sp5A = m64_read_s16(state);
seqChannel->freqScale = FLOAT_CAST(sp5A) / US_FLOAT(32768.0);
break;
case 0xd3: // chan_pitchbend; pitch bend by <= 1 octave in either direction (-127..127)
// (m64_read_u8(state) is really s8 here)
temp = m64_read_u8(state) + 127;
seqChannel->freqScale = gPitchBendFrequencyScale[temp];
break;
case 0xdd: // chan_setpan
seqChannel->pan = FLOAT_CAST(m64_read_u8(state)) / US_FLOAT(128.0);
break;
case 0xdc: // chan_setpanmix; set proportion of pan to come from channel (0..128)
seqChannel->panChannelWeight = FLOAT_CAST(m64_read_u8(state)) / US_FLOAT(128.0);
break;
case 0xdb: // chan_transpose; set transposition in semitones
tempSigned = *state->pc;
state->pc++;
seqChannel->transposition = tempSigned;
break;
case 0xda: // chan_setenvelope
sp5A = m64_read_s16(state);
seqChannel->adsr.envelope = (struct AdsrEnvelope *) (seqPlayer->seqData + sp5A);
break;
case 0xd9: // chan_setdecayrelease
seqChannel->adsr.releaseRate = m64_read_u8(state);
break;
case 0xd8: // chan_setvibratoextent
seqChannel->vibratoExtentTarget = m64_read_u8(state) * 8;
seqChannel->vibratoExtentStart = 0;
seqChannel->vibratoExtentChangeDelay = 0;
break;
case 0xd7: // chan_setvibratorate
seqChannel->vibratoRateStart = seqChannel->vibratoRateTarget =
m64_read_u8(state) * 32;
seqChannel->vibratoRateChangeDelay = 0;
break;
case 0xe2: // chan_setvibratoextentlinear
seqChannel->vibratoExtentStart = m64_read_u8(state) * 8;
seqChannel->vibratoExtentTarget = m64_read_u8(state) * 8;
seqChannel->vibratoExtentChangeDelay = m64_read_u8(state) * 16;
break;
case 0xe1: // chan_setvibratoratelinear
seqChannel->vibratoRateStart = m64_read_u8(state) * 32;
seqChannel->vibratoRateTarget = m64_read_u8(state) * 32;
seqChannel->vibratoRateChangeDelay = m64_read_u8(state) * 16;
break;
case 0xe3: // chan_setvibratodelay
seqChannel->vibratoDelay = m64_read_u8(state) * 16;
break;
case 0xd6: // chan_setupdatesperframe_unimplemented
temp = m64_read_u8(state);
if (temp == 0) {
temp = gAudioUpdatesPerFrame;
}
seqChannel->updatesPerFrameUnused = temp;
break;
case 0xd4: // chan_setreverb
seqChannel->reverb = m64_read_u8(state);
break;
case 0xc6: // chan_setbank; switch bank within set
temp = m64_read_u8(state);
// Switch to the temp's (0-indexed) bank in this sequence's
// bank set. Note that in the binary format (not in the JSON!)
// the banks are listed backwards, so we counts from the back.
// (gAlBankSets[offset] is number of banks)
offset = ((u16 *) gAlBankSets)[seqPlayer->seqId];
temp = gAlBankSets[offset + gAlBankSets[offset] - temp];
// temp should be in a saved register across this call
if (get_bank_or_seq(&gBankLoadedPool, 2, temp) != NULL) {
seqChannel->bankId = temp;
}
break;
case 0xc7: // chan_writeseq; write to sequence data (!)
// sp38 doesn't go on the stack
sp38 = value;
temp2 = m64_read_u8(state);
sp5A = m64_read_s16(state);
seqPlayer->seqData[sp5A] = sp38 + temp2;
break;
case 0xc8: // chan_subtract
case 0xc9: // chan_bitand
case 0xcc: // chan_setval
temp = m64_read_u8(state);
if (cmd == 0xc8) {
value -= temp;
} else if (cmd == 0xcc) {
value = temp;
} else {
value &= temp;
}
break;
case 0xca: // chan_setmutebhv
seqChannel->muteBehavior = m64_read_u8(state);
break;
case 0xcb: // chan_readseq
sp5A = m64_read_s16(state);
value = seqPlayer->seqData[sp5A + value];
break;
case 0xd0: // chan_stereoheadseteffects
seqChannel->stereoHeadsetEffects = m64_read_u8(state);
break;
case 0xd1: // chan_setnoteallocationpolicy
seqChannel->noteAllocPolicy = m64_read_u8(state);
break;
case 0xd2: // chan_setsustain
seqChannel->adsr.sustain = m64_read_u8(state) << 8;
break;
case 0xe4: // chan_dyncall
if (value != -1) {
u8(*thingy)[2] = *seqChannel->dynTable;
state->depth++, state->stack[state->depth - 1] = state->pc;
sp5A = thingy[value][1] + (thingy[value][0] << 8);
state->pc = seqPlayer->seqData + sp5A;
}
break;
}
} else {
// loBits is recomputed a lot
loBits = cmd & 0xf;
// #define loBits (cmd & 0xf)
switch (cmd & 0xf0) {
case 0x00: // chan_testlayerfinished
if (seqChannel->layers[loBits] != NULL) {
value = seqChannel->layers[loBits]->finished;
}
break;
case 0x70: // chan_iowriteval; write data back to audio lib
seqChannel->soundScriptIO[loBits] = value;
break;
case 0x80: // chan_ioreadval; read data from audio lib
value = seqChannel->soundScriptIO[loBits];
if (loBits < 4) {
seqChannel->soundScriptIO[loBits] = -1;
}
break;
case 0x50: // chan_ioreadvalsub; subtract with read data from audio lib
value -= seqChannel->soundScriptIO[loBits];
break;
case 0x90: // chan_setlayer
sp5A = m64_read_s16(state);
if (seq_channel_set_layer(seqChannel, loBits) == 0) {
seqChannel->layers[loBits]->scriptState.pc = seqPlayer->seqData + sp5A;
}
break;
case 0xa0: // chan_freelayer
seq_channel_layer_free(seqChannel, loBits);
break;
case 0xb0: // chan_dynsetlayer
if (value != -1 && seq_channel_set_layer(seqChannel, loBits) != -1) {
temp = (*seqChannel->dynTable)[value][0]
+ ((*seqChannel->dynTable)[value][1] << 8);
seqChannel->layers[loBits]->scriptState.pc = seqPlayer->seqData + temp;
}
break;
case 0x60: // chan_setnotepriority (arg must be >= 2)
seqChannel->notePriority = loBits;
break;
case 0x10: // chan_startchannel
sp5A = m64_read_s16(state);
sequence_channel_enable(seqPlayer, loBits, seqPlayer->seqData + sp5A);
break;
case 0x20: // chan_disablechannel
sequence_channel_disable(seqPlayer->channels[loBits]);
break;
case 0x30: // chan_iowriteval2; write data back to audio lib for another channel
seqPlayer->channels[loBits]->soundScriptIO[m64_read_u8(state)] = value;
break;
case 0x40: // chan_ioreadval2; read data from audio lib from another channel
value = seqPlayer->channels[loBits]->soundScriptIO[m64_read_u8(state)];
break;
}
}
}
}
for (i = 0; i < LAYERS_MAX; i++) {
if (seqChannel->layers[i] != 0) {
seq_channel_layer_process_script(seqChannel->layers[i]);
}
}
}
#elif defined(VERSION_JP)
GLOBAL_ASM("asm/non_matchings/sequence_channel_process_script_jp.s")
#else
GLOBAL_ASM("asm/non_matchings/sequence_channel_process_script_us.s")
#endif
void sequence_player_process_sequence(struct SequencePlayer *seqPlayer) {
u8 cmd;
u8 loBits;
u8 temp;
s8 tempSigned;
s32 value;
s32 i;
u16 u16v;
u8 *tempPtr;
struct M64ScriptState *state;
if (seqPlayer->enabled == FALSE) {
return;
}
if (seqPlayer->bankDmaInProgress == TRUE) {
if (seqPlayer->bankDmaMesg == NULL) {
return;
}
if (seqPlayer->bankDmaRemaining == 0) {
seqPlayer->bankDmaInProgress = FALSE;
patch_audio_bank(seqPlayer->loadingBank, gAlTbl->seqArray[seqPlayer->loadingBankId].offset,
seqPlayer->loadingBankNumInstruments, seqPlayer->loadingBankNumDrums);
gCtlEntries[seqPlayer->loadingBankId].numInstruments = seqPlayer->loadingBankNumInstruments;
gCtlEntries[seqPlayer->loadingBankId].numDrums = seqPlayer->loadingBankNumDrums;
gCtlEntries[seqPlayer->loadingBankId].instruments = seqPlayer->loadingBank->instruments;
gCtlEntries[seqPlayer->loadingBankId].drums = seqPlayer->loadingBank->drums;
gBankLoadStatus[seqPlayer->loadingBankId] = SOUND_LOAD_STATUS_COMPLETE;
} else {
osCreateMesgQueue(&seqPlayer->bankDmaMesgQueue, &seqPlayer->bankDmaMesg, 1);
seqPlayer->bankDmaMesg = NULL;
audio_dma_partial_copy_async(&seqPlayer->bankDmaCurrDevAddr, &seqPlayer->bankDmaCurrMemAddr,
&seqPlayer->bankDmaRemaining, &seqPlayer->bankDmaMesgQueue,
&seqPlayer->bankDmaIoMesg);
}
return;
}
if (seqPlayer->seqDmaInProgress == TRUE) {
if (seqPlayer->seqDmaMesg == NULL) {
return;
}
seqPlayer->seqDmaInProgress = FALSE;
gSeqLoadStatus[seqPlayer->seqId] = SOUND_LOAD_STATUS_COMPLETE;
}
// If discarded, bail out.
if (IS_SEQ_LOAD_COMPLETE(seqPlayer->seqId) == FALSE
|| IS_BANK_LOAD_COMPLETE(seqPlayer->defaultBank[0]) == FALSE) {
sequence_player_disable(seqPlayer);
return;
}
// Remove possible SOUND_LOAD_STATUS_DISCARDABLE marks.
gSeqLoadStatus[seqPlayer->seqId] = SOUND_LOAD_STATUS_COMPLETE;
gBankLoadStatus[seqPlayer->defaultBank[0]] = SOUND_LOAD_STATUS_COMPLETE;
if (seqPlayer->muted && (seqPlayer->muteBehavior & MUTE_BEHAVIOR_STOP_SCRIPT) != 0) {
return;
}
// Check if we surpass the number of ticks needed for a tatum, else stop.
seqPlayer->tempoAcc += seqPlayer->tempo;
if (seqPlayer->tempoAcc < gTempoInternalToExternal) {
return;
}
seqPlayer->tempoAcc -= (u16) gTempoInternalToExternal;
state = &seqPlayer->scriptState;
if (seqPlayer->delay > 1) {
seqPlayer->delay--;
} else {
for (;;) {
cmd = m64_read_u8(state);
if (cmd == 0xff) // seq_end
{
if (state->depth == 0) {
sequence_player_disable(seqPlayer);
break;
}
state->depth--, state->pc = state->stack[state->depth];
}
if (cmd == 0xfd) // seq_delay
{
seqPlayer->delay = m64_read_compressed_u16(state);
break;
}
if (cmd == 0xfe) // seq_delay1
{
seqPlayer->delay = 1;
break;
}
if (cmd >= 0xc0) {
switch (cmd) {
case 0xff: // seq_end
break;
case 0xfc: // seq_call
u16v = m64_read_s16(state);
state->depth++, state->stack[state->depth - 1] = state->pc;
state->pc = seqPlayer->seqData + u16v;
break;
case 0xf8: // seq_loop; loop start, N iterations (or 256 if N = 0)
state->remLoopIters[state->depth] = m64_read_u8(state);
state->depth++, state->stack[state->depth - 1] = state->pc;
break;
case 0xf7: // seq_loopend
state->remLoopIters[state->depth - 1]--;
if (state->remLoopIters[state->depth - 1] != 0) {
state->pc = state->stack[state->depth - 1];
} else {
state->depth--;
}
break;
case 0xfb: // seq_jump
case 0xfa: // seq_beqz; jump if == 0
case 0xf9: // seq_bltz; jump if < 0
case 0xf5: // seq_bgez; jump if >= 0
u16v = m64_read_s16(state);
if (cmd == 0xfa && value != 0) {
break;
}
if (cmd == 0xf9 && value >= 0) {
break;
}
if (cmd == 0xf5 && value < 0) {
break;
}
state->pc = seqPlayer->seqData + u16v;
break;
case 0xf2: // seq_reservenotes
note_pool_clear(&seqPlayer->notePool);
note_pool_fill(&seqPlayer->notePool, m64_read_u8(state));
break;
case 0xf1: // seq_unreservenotes
note_pool_clear(&seqPlayer->notePool);
break;
case 0xdf: // seq_transpose; set transposition in semitones
seqPlayer->transposition = 0;
// fallthrough
case 0xde: // seq_transposerel; add transposition
seqPlayer->transposition += (s8) m64_read_u8(state);
break;
case 0xdd: // seq_settempo (bpm)
case 0xdc: // seq_addtempo (bpm)
temp = m64_read_u8(state);
if (cmd == 0xdd) {
seqPlayer->tempo = temp * TEMPO_SCALE;
} else {
seqPlayer->tempo += (s8) temp * TEMPO_SCALE;
}
if (seqPlayer->tempo > gTempoInternalToExternal) {
seqPlayer->tempo = gTempoInternalToExternal;
}
if ((s16) seqPlayer->tempo <= 0) {
seqPlayer->tempo = 1;
}
break;
case 0xdb: // seq_setvol
temp = m64_read_u8(state);
switch (seqPlayer->state) {
case SEQUENCE_PLAYER_STATE_2:
if (seqPlayer->fadeTimer != 0) {
f32 targetVolume = FLOAT_CAST(temp) / US_FLOAT(127.0);
seqPlayer->fadeVelocity = (targetVolume - seqPlayer->fadeVolume)
/ FLOAT_CAST(seqPlayer->fadeTimer);
break;
}
// fallthrough
case SEQUENCE_PLAYER_STATE_0:
seqPlayer->fadeVolume = FLOAT_CAST(temp) / US_FLOAT(127.0);
break;
case SEQUENCE_PLAYER_STATE_FADE_OUT:
case SEQUENCE_PLAYER_STATE_4:
seqPlayer->volume = FLOAT_CAST(temp) / US_FLOAT(127.0);
break;
}
break;
case 0xda: // seq_changevol
tempSigned = m64_read_u8(state);
seqPlayer->fadeVolume =
seqPlayer->fadeVolume + (f32) tempSigned / US_FLOAT(127.0);
break;
case 0xd7: // seq_initchannels
u16v = m64_read_s16(state);
sequence_player_init_channels(seqPlayer, u16v);
break;
case 0xd6: // seq_disablechannels
u16v = m64_read_s16(state);
sequence_player_disable_channels(seqPlayer, u16v);
break;
case 0xd5: // seq_setmutescale
tempSigned = m64_read_u8(state);
seqPlayer->muteVolumeScale = (f32) tempSigned / US_FLOAT(127.0);
break;
case 0xd4: // seq_mute
seqPlayer->muted = TRUE;
break;
case 0xd3: // seq_setmutebhv
seqPlayer->muteBehavior = m64_read_u8(state);
break;
case 0xd2: // seq_setshortnotevelocitytable
case 0xd1: // seq_setshortnotedurationtable
u16v = m64_read_s16(state);
tempPtr = seqPlayer->seqData + u16v;
if (cmd == 0xd2) {
seqPlayer->shortNoteVelocityTable = tempPtr;
} else {
seqPlayer->shortNoteDurationTable = tempPtr;
}
break;
case 0xd0: // seq_setnoteallocationpolicy
seqPlayer->noteAllocPolicy = m64_read_u8(state);
break;
case 0xcc: // seq_setval
value = m64_read_u8(state);
break;
case 0xc9: // seq_bitand
value = m64_read_u8(state) & value;
break;
case 0xc8: // seq_subtract
value = value - m64_read_u8(state);
break;
}
} else {
loBits = cmd & 0xf;
switch (cmd & 0xf0) {
case 0x00: // seq_testchdisabled
if (IS_SEQUENCE_CHANNEL_VALID(seqPlayer->channels[loBits]) == TRUE) {
value = seqPlayer->channels[loBits]->finished;
}
break;
case 0x10:
break;
case 0x20:
break;
case 0x40:
break;
case 0x50: // seq_subvariation
value -= seqPlayer->seqVariation;
break;
case 0x60:
break;
case 0x70: // seq_setvariation
seqPlayer->seqVariation = value;
break;
case 0x80: // seq_getvariation
value = seqPlayer->seqVariation;
break;
case 0x90: // seq_startchannel
u16v = m64_read_s16(state);
sequence_channel_enable(seqPlayer, loBits, seqPlayer->seqData + u16v);
break;
case 0xa0:
break;
case 0xd8: // (this makes no sense)
break;
case 0xd9:
break;
}
}
}
}
for (i = 0; i < CHANNELS_MAX; i++) {
if (seqPlayer->channels[i] != &gSequenceChannelNone) {
sequence_channel_process_script(seqPlayer->channels[i]);
}
}
}
// This runs 240 times per second.
void process_sequences(UNUSED s32 iterationsRemaining) {
s32 i;
for (i = 0; i < SEQUENCE_PLAYERS; i++) {
if (gSequencePlayers[i].enabled == TRUE) {
sequence_player_process_sequence(gSequencePlayers + i);
sequence_player_process_sound(gSequencePlayers + i);
}
}
reclaim_notes();
process_notes();
}
void init_sequence_player(u32 player) {
struct SequencePlayer *seqPlayer = &gSequencePlayers[player];
seqPlayer->muted = FALSE;
seqPlayer->delay = 0;
seqPlayer->state = SEQUENCE_PLAYER_STATE_0;
seqPlayer->fadeTimer = 0;
seqPlayer->tempoAcc = 0;
seqPlayer->tempo = 120 * TEMPO_SCALE; // 120 BPM
seqPlayer->transposition = 0;
seqPlayer->muteBehavior = MUTE_BEHAVIOR_STOP_SCRIPT | MUTE_BEHAVIOR_STOP_NOTES | MUTE_BEHAVIOR_SOFTEN;
seqPlayer->noteAllocPolicy = 0;
seqPlayer->shortNoteVelocityTable = gDefaultShortNoteVelocityTable;
seqPlayer->shortNoteDurationTable = gDefaultShortNoteDurationTable;
seqPlayer->fadeVolume = 1.0f;
seqPlayer->fadeVelocity = 0.0f;
seqPlayer->volume = 0.0f;
seqPlayer->muteVolumeScale = 0.5f;
}
void init_sequence_players(void) {
// Initialization function, called from audio_init
s32 i, j;
for (i = 0; i < ARRAY_COUNT(gSequenceChannels); i++) {
gSequenceChannels[i].seqPlayer = NULL;
gSequenceChannels[i].enabled = FALSE;
}
for (i = 0; i < ARRAY_COUNT(gSequenceChannels); i++) {
// @bug Size of wrong array. Zeroes out second half of gSequenceChannels[0],
// all of gSequenceChannels[1..31], and part of gSequenceLayers[0].
// However, this is only called at startup, so it's harmless.
#ifdef AVOID_UB
#define LAYERS_SIZE LAYERS_MAX
#else
#define LAYERS_SIZE ARRAY_COUNT(gSequenceLayers)
#endif
for (j = 0; j < LAYERS_SIZE; j++) {
gSequenceChannels[i].layers[j] = NULL;
}
}
init_layer_freelist();
for (i = 0; i < ARRAY_COUNT(gSequenceLayers); i++) {
gSequenceLayers[i].seqChannel = NULL;
gSequenceLayers[i].enabled = FALSE;
}
for (i = 0; i < SEQUENCE_PLAYERS; i++) {
for (j = 0; j < CHANNELS_MAX; j++) {
gSequencePlayers[i].channels[j] = &gSequenceChannelNone;
}
gSequencePlayers[i].seqVariation = -1;
gSequencePlayers[i].bankDmaInProgress = FALSE;
gSequencePlayers[i].seqDmaInProgress = FALSE;
init_note_lists(&gSequencePlayers[i].notePool);
init_sequence_player(i);
}
}