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-rw-r--r--backends/midi/ym2612.cpp141
1 files changed, 56 insertions, 85 deletions
diff --git a/backends/midi/ym2612.cpp b/backends/midi/ym2612.cpp
index fcdfa26f25..69bfef8cc9 100644
--- a/backends/midi/ym2612.cpp
+++ b/backends/midi/ym2612.cpp
@@ -97,9 +97,7 @@ public:
class Voice2612 {
public:
- MidiChannel_YM2612 *_owner;
- Voice2612 *prev, *next;
- bool _in_use;
+ Voice2612 *next;
uint16 _rate;
protected:
@@ -129,18 +127,17 @@ public:
class MidiChannel_YM2612 : public MidiChannel {
protected:
- MidiDriver_YM2612 *_owner;
uint16 _rate;
- byte _instrument[48];
Voice2612 *_voices;
+ Voice2612 *_next_voice;
public:
- void removeVoice (Voice2612 *voice);
+ void removeAllVoices();
void nextTick(int *outbuf, int buflen);
void rate(uint16 r);
public:
- MidiChannel_YM2612 (MidiDriver_YM2612 *owner);
+ MidiChannel_YM2612();
virtual ~MidiChannel_YM2612();
// MidiChannel interface
@@ -160,7 +157,6 @@ public:
class MidiDriver_YM2612 : public MidiDriver {
protected:
MidiChannel_YM2612 *_channel[16];
- Voice2612 *_voices[32];
int _next_voice;
int _volume;
@@ -183,9 +179,6 @@ protected:
static void premix_proc(void *param, int16 *buf, uint len);
public:
- Voice2612 *allocateVoice();
-
-public:
MidiDriver_YM2612(SoundMixer *mixer);
virtual ~MidiDriver_YM2612();
@@ -318,7 +311,7 @@ void Operator2612::frequency(int freq) {
r = _specifiedReleaseRate;
if (r != 0) {
- r = r * 2 + 1; // このタイミングで良いのかわからん
+ r = r * 2 + 1; // (Translated) I cannot know whether the timing is a good choice or not
r = r * 2 + (keyscaleTable[freq/262205] >> (3-_keyScale));
// KS による補正はあるらしい。赤p.206 では記述されてないけど。
if (r >= 64)
@@ -435,9 +428,7 @@ void Operator2612::nextTick(const int *phasebuf, int *outbuf, int buflen) {
////////////////////////////////////////
Voice2612::Voice2612() {
- _owner = 0;
- prev = next = 0;
- _in_use = false;
+ next = 0;
_control7 = 127;
_note = 40;
_frequency = 440;
@@ -513,16 +504,8 @@ void Voice2612::setInstrument(byte const *instrument) {
}
void Voice2612::nextTick(int *outbuf, int buflen) {
- if (!_in_use || _velocity == 0)
+ if (_velocity == 0)
return;
- if (!_opr[0]->inUse() && !_opr[1]->inUse() &&
- !_opr[2]->inUse() && !_opr[3]->inUse())
- {
- _in_use = false;
- if (_owner)
- _owner->removeVoice (this);
- return;
- }
if (_buflen < buflen) {
free(_buffer);
@@ -593,7 +576,6 @@ void Voice2612::noteOn(int n, int onVelo) {
_note = n;
velocity(onVelo);
recalculateFrequency();
- _in_use = true;
int i;
for (i = 0; i < ARRAYSIZE(_opr); i++)
_opr[i]->keyOn();
@@ -645,64 +627,71 @@ void Voice2612::recalculateFrequency() {
//
////////////////////////////////////////
-MidiChannel_YM2612::MidiChannel_YM2612 (MidiDriver_YM2612 *owner) {
-// _voice = new Voice2612();
- _owner = owner;
+MidiChannel_YM2612::MidiChannel_YM2612() {
_voices = 0;
+ _next_voice = 0;
}
MidiChannel_YM2612::~MidiChannel_YM2612() {
-// delete _voice;
+ removeAllVoices();
}
-void MidiChannel_YM2612::noteOn(byte note, byte onVelo) {
- Voice2612 *voice = _owner->allocateVoice();
- if (!voice)
+void MidiChannel_YM2612::removeAllVoices() {
+ if (!_voices)
return;
- voice->_owner = this;
- voice->_rate = _rate;
- voice->next = _voices;
- voice->prev = 0;
- if (_voices)
- _voices->prev = voice;
- _voices = voice;
- voice->setInstrument (_instrument);
- voice->noteOn(note, onVelo);
+ Voice2612 *last, *voice = _voices;
+ for (; voice; voice = last) {
+ last = voice->next;
+ delete voice;
+ }
+ _voices = _next_voice = 0;
}
-void MidiChannel_YM2612::noteOff(byte note) {
- Voice2612 *voice = _voices;
- for (; voice; voice = voice->next) {
- if (voice->noteOff(note))
- removeVoice(voice);
- }
+void MidiChannel_YM2612::noteOn(byte note, byte onVelo) {
+ if (!_voices)
+ return;
+ _next_voice = _next_voice ? _next_voice : _voices;
+ _next_voice->noteOn(note, onVelo);
+ _next_voice = _next_voice->next;
}
-void MidiChannel_YM2612::removeVoice(Voice2612 *voice) {
- // We ASSUME that the voice belongs to us.
- voice->_owner = 0;
- if (voice->next)
- voice->next->prev = voice->prev;
- if (voice->prev)
- voice->prev->next = voice->next;
- else
- _voices = voice->next;
+void MidiChannel_YM2612::noteOff(byte note) {
+ if (!_voices)
+ return;
+ if (_next_voice == _voices)
+ _next_voice = 0;
+ Voice2612 *voice = _next_voice;
+ do {
+ if (!voice)
+ voice = _voices;
+ if (voice->noteOff(note)) {
+ _next_voice = voice;
+ break;
+ }
+ voice = voice->next;
+ } while (voice != _next_voice);
}
void MidiChannel_YM2612::controlChange(byte control, byte value) {
- // いいのかこれで?
- Voice2612 *voice = _voices;
- for (; voice; voice = voice->next)
- voice->setControlParameter(control, value);
+ // いいのかこれで?
+ if (control == 121) {
+ // Reset controller
+ removeAllVoices();
+ } else {
+ Voice2612 *voice = _voices;
+ for (; voice; voice = voice->next)
+ voice->setControlParameter(control, value);
+ }
}
void MidiChannel_YM2612::sysEx_customInstrument(uint32 type, byte *fmInst) {
if (type != 'EUP ')
return;
- memcpy (_instrument, fmInst, 48);
- Voice2612 *voice = _voices;
- for (; voice; voice = voice->next)
- voice->setInstrument(fmInst);
+ Voice2612 *voice = new Voice2612;
+ voice->next = _voices;
+ _voices = voice;
+ voice->_rate = _rate;
+ voice->setInstrument(fmInst);
}
void MidiChannel_YM2612::pitchBend(int16 value) {
@@ -744,10 +733,8 @@ _mixer(mixer)
createLookupTables();
_volume = 256;
int i;
- for (i = 0; i < ARRAYSIZE(_voices); i++)
- _voices[i] = new Voice2612;
for (i = 0; i < ARRAYSIZE(_channel); i++)
- _channel[i] = new MidiChannel_YM2612 (this);
+ _channel[i] = new MidiChannel_YM2612;
rate(_mixer->getOutputRate());
}
@@ -755,8 +742,6 @@ MidiDriver_YM2612::~MidiDriver_YM2612() {
int i;
for (i = 0; i < ARRAYSIZE(_channel); i++)
delete _channel[i];
- for (i = 0; i < ARRAYSIZE(_voices); i++)
- delete _voices[i];
delete sintbl;
delete powtbl;
delete frequencyTable;
@@ -865,8 +850,8 @@ void MidiDriver_YM2612::nextTick(int16 *buf1, int buflen) {
int *buf0 = (int *)buf1;
int i;
- for (i = 0; i < ARRAYSIZE(_voices); i++)
- _voices[i]->nextTick(buf0, buflen);
+ for (i = 0; i < ARRAYSIZE(_channel); i++)
+ _channel[i]->nextTick(buf0, buflen);
for (i = 0; i < buflen; ++i)
buf1[i*2+1] = buf1[i*2] = ((buf0[i] * volume()) >> 10) & 0xffff;
@@ -951,20 +936,6 @@ void MidiDriver_YM2612::createLookupTables() {
}
}
-Voice2612 *MidiDriver_YM2612::allocateVoice() {
- _next_voice %= ARRAYSIZE(_voices);
- int oldStart = _next_voice;
- do {
- if (!_voices[_next_voice++]->_in_use)
- return _voices[_next_voice-1];
- _next_voice %= ARRAYSIZE(_voices);
- } while (_next_voice != oldStart);
- Voice2612 *voice = _voices[_next_voice++];
- if (voice->_owner)
- voice->_owner->removeVoice (voice);
- return voice;
-}
-
////////////////////////////////////////
//
// MidiDriver_YM2612 factory
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 06:31:12 +0000