Ticket #8637: softsynth.patch

ym2612.cpp

@@ -90 +90 @@
         _specifiedSustainRate = instrument[24] & 31;
         _specifiedSustainLevel = (instrument[28] >> 4) & 15;
         _specifiedReleaseRate = instrument[28] & 15;
-        _state = _s_ready; // ËÜʪ¤Ç¤Ï¤É¤¦¤Ê¤Î¤«¤Ê?
+        _state = _s_ready;
         velocity(_velocity);
 }
 
 void Operator2612::keyOn() {
         _state = _s_attacking;
         _tickCount = 0;
-        _phase = 0;                     // ¤É¤¦¤â¡¢¼ÂºÝ¤³¤¦¤é¤·¤¤
-        _currentLevel = ((int32)0x7f << 15); // ¤³¤ì¤â¡¢¼ÂºÝ¤³¤¦¤é¤·¤¤
+        _phase = 0;                     
+        _currentLevel = ((int32)0x7f << 15); 
 }
 
 void Operator2612::keyOff() {
@@ -116 +116 @@
         if (r != 0) {
                 r = r * 2 + (keyscaleTable[freq/262205] >> (3-_keyScale));
                 if (r >= 64)
-                r = 63; // ¤¹¤ë¤Ù¤­¤Ê¤ó¤À¤í¤¦¤È¤Ï»×¤¦¤ó¤À¤±¤É (ÀÖp.207)
+                r = 63;
         }
 
         r = 63 - r;
@@ -125 +125 @@
         else {
                 value = powtbl[(r&3) << 7];
                 value *= 1 << (r >> 2);
-                value *= 41; // r == 20 ¤Î¤È¤­¡¢0-96[db] ¤¬ 10.01[ms] == 41.00096
+                value *= 41; 
                 value /= 1 << (15 + 5);
                 value *= 127 - _specifiedTotalLevel;
                 value /= 127;
@@ -156 +156 @@
         if (r != 0) {
                 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 ¤Ë¤è¤ëÊäÀµ¤Ï¤¢¤ë¤é¤·¤¤¡£ÀÖp.206 ¤Ç¤Ïµ­½Ò¤µ¤ì¤Æ¤Ê¤¤¤±¤É¡£
+                // KS
                 if (r >= 64)
                         r = 63;
         }
@@ -229 +229 @@
                         }
 
                         if (level < zero_level) {
-                                int phaseShift = *phasebuf >> 2; // Àµ¤·¤¤ÊÑÄ´Î̤Ï?  3 ¤¸¤ã¾®¤µ¤¹¤®¤Ç 2 ¤¸¤ãÂ礭¤¤¤è¤¦¤Ê¡£
+                                int phaseShift = *phasebuf >> 2; 
                                 if (_feedbackLevel)
                                         phaseShift += (output << (_feedbackLevel - 1)) / 1024;
                                 output = sintbl[((_phase >> 7) + phaseShift) & 0x7ff];
-                                output >>= (level >> 18);       // Àµ¤·¤¤¸º¿êÎ̤Ï?
+                                output >>= (level >> 18);       
                                 // Here is the original code, which requires 64-bit ints
 //                              output *= powtbl[511 - ((level>>25)&511)];
 //                              output >>= 16;
@@ -438 +438 @@
 }
 
 void Voice2612::recalculateFrequency() {
-        // MIDI ¤È¤â°ã¤¦¤·....
-        // ¤É¤¦¤¤¤¦»ÅÍͤʤó¤À¤í¤¦¤«?
-        // ¤È»×¤Ã¤¿¤é¡¢¤Ê¤ó¤È¡¢¤³¤ì (¢­) ¤¬Àµ²ò¤é¤·¤¤¡£
+        // 
+        // 
+        // 
         int32 basefreq = frequencyTable[_note];
         int cfreq = frequencyTable[_note - (_note % 12)];
         int oct = _note / 12;
-        int fnum = (int) (((double)basefreq * (1 << 13)) / cfreq); // OPL ¤Î fnum ¤ÈƱ¤¸¤è¤¦¤Ê¤â¤Î¡£
+        int fnum = (int) (((double)basefreq * (1 << 13)) / cfreq);
         fnum += _frequencyOffs - 0x2000;
         if (fnum < 0x2000) {
                 fnum += 0x2000;
@@ -455 +455 @@
                 oct++;
         }
 
-        // _frequency ¤ÏºÇ½ªÅª¤Ë¥Ð¥¤¥¢¥¹ 256*1024 ÇÜ
+        //
         _frequency = (int) ((frequencyTable[oct*12] * (double)fnum) / 8);
 
         int i;
@@ -515 +515 @@
 }
 
 void MidiChannel_YM2612::controlChange(byte control, byte value) {
-        // ¤¤¤¤¤Î¤«¤³¤ì¤Ç?
+        //
         if (control == 121) {
                 // Reset controller
                 removeAllVoices();
@@ -537 +537 @@
 }
 
 void MidiChannel_YM2612::pitchBend(int16 value) {
-  // ¤¤¤¤¤Î¤«¤³¤ì¤Ç?
+  //
         Voice2612 *voice = _voices;
         for (; voice; voice = voice->next)
                 voice->pitchBend(value);
@@ -696 +696 @@
                         0x03d5, 0x0410, 0x044e, 0x048f,
                 };
 
-                // (int)(880.0 * 256.0 * pow(2.0, (note-0x51)/12.0)); // ¥Ð¥¤¥¢¥¹ 256 ÇÜ
-                // 0x45 ¤¬ 440Hz (a4)¡¢0x51 ¤¬ 880Hz (a5) ¤é¤·¤¤
+                // (int)(880.0 * 256.0 * pow(2.0, (note-0x51)/12.0))
+                // 
                 frequencyTable = new int [120];
                 for (block = -1; block < 9; block++) {
                         for (i = 0; i < 12; i++) {
@@ -707 +707 @@
                 }
 
                 keycodeTable = new int [120];
-                // detune Î̤η׻»¤ä KS ¤Ë¤è¤ë rate ÊÑ´¹¤Ë»È¤¦¤ó¤¸¤ã¤Ê¤¤¤«¤Ê
+                // detune 
                 for (block = -1; block < 9; block++) {
                         for (i = 0; i < 12; i++) {
                                 // see p.204
@@ -730 +730 @@
                 keyscaleTable[0] = 0;
                 for (freq = 1; freq < 8192; freq++) {
                         keyscaleTable[freq] = (int)(log((double)freq) / 9.03 * 32.0) - 1;
-                        // 8368[Hz] (o9c) ¤Ç 32¤¯¤é¤¤¡£9.03 =:= ln 8368
+                        // 8368[Hz] (o9c)
                 }
         }