AUDIO: Fix Missing Default Switch Cases

These are flagged by GCC if -Wswitch-default is enabled.

8 files changed, 86 insertions, 21 deletions

diff --git a/audio/softsynth/cms.cpp b/audio/softsynth/cms.cpp
index ce058b515b..4ea2a9c67a 100644
--- a/audio/softsynth/cms.cpp
+++ b/audio/softsynth/cms.cpp
@@ -179,6 +179,7 @@ void CMSEmulator::update(int chip, int16 *buffer, int length) {
 		case 1: saa->noise[ch].freq = 15625.0 * 2; break;
 		case 2: saa->noise[ch].freq =  7812.5 * 2; break;
 		case 3: saa->noise[ch].freq = saa->channels[ch * 3].freq; break;
+		default: break;
 		}
 	}
 
diff --git a/audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp b/audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
index 0cdf18378d..540c1d943a 100644
--- a/audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
+++ b/audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
@@ -230,6 +230,9 @@ void TownsPC98_FmSynthOperator::generateOutput(int32 phasebuf, int32 *feed, int3
 				targetLevel = 1023;
 				levelIncrement = _adTbl[fs_r.rate + ((_tickCount >> fs_r.shift) & 7)];
 				break;
+
+			default:
+				break;
 			}
 			loop = false;
 		}
@@ -1536,6 +1539,8 @@ void TownsPC98_FmSynth::nextTick(int32 *buffer, uint32 bufferSize) {
 				o[3]->generateOutput(0, 0, output);
 				*del = 0;
 				break;
+			default:
+				break;
 			};
 
 			int32 finOut = (output << 2) / ((_numChan + _numSSG - 3) / 3);
diff --git a/audio/softsynth/mt32.cpp b/audio/softsynth/mt32.cpp
index 09a8083f7b..47ac9f1cdc 100644
--- a/audio/softsynth/mt32.cpp
+++ b/audio/softsynth/mt32.cpp
@@ -290,6 +290,8 @@ uint32 MidiDriver_MT32::property(int prop, uint32 param) {
 	case PROP_CHANNEL_MASK:
 		_channelMask = param & 0xFFFF;
 		return 1;
+	default:
+		break;
 	}
 
 	return 0;
diff --git a/audio/softsynth/opl/dbopl.cpp b/audio/softsynth/opl/dbopl.cpp
index 19be94cf69..275a1caa00 100644
--- a/audio/softsynth/opl/dbopl.cpp
+++ b/audio/softsynth/opl/dbopl.cpp
@@ -422,6 +422,8 @@ Bits Operator::TemplateVolume(  ) {
 			return ENV_MAX;
 		}
 		break;
+	default:
+		break;
 	}
 	volume = vol;
 	return vol;
@@ -753,6 +755,8 @@ void Channel::WriteC0( const Chip* chip, Bit8u val ) {
 			case 3:
 				chan0->synthHandler = &Channel::BlockTemplate< sm3AMAM >;
 				break;
+			default:
+				break;
 			}
 		//Disable updating percussion channels
 		} else if ((fourMask & 0x40) && ( chip->regBD & 0x20) ) {
@@ -900,6 +904,8 @@ Channel* Channel::BlockTemplate( Chip* chip, Bit32u samples, Bit32s* output ) {
 		// thus we leave this blank.
 		// TODO: Consider checking this.
 		break;
+	default:
+		break;
 	}
 	//Init the operators with the the current vibrato and tremolo values
 	Op( 0 )->Prepare( chip );
@@ -985,6 +991,8 @@ Channel* Channel::BlockTemplate( Chip* chip, Bit32u samples, Bit32s* output ) {
 			// thus we leave this blank.
 			// TODO: Consider checking this.
 			break;
+		default:
+			break;
 		}
 	}
 	switch( mode ) {
@@ -1011,6 +1019,8 @@ Channel* Channel::BlockTemplate( Chip* chip, Bit32u samples, Bit32s* output ) {
 		// thus we leave this blank.
 		// TODO: Consider checking this.
 		break;
+	default:
+		break;
 	}
 	return 0;
 }
@@ -1203,6 +1213,8 @@ void Chip::WriteReg( Bit32u reg, Bit8u val ) {
 	case 0xf0 >> 4:
 		REGOP( WriteE0 );
 		break;
+	default:
+		break;
 	}
 }
 
@@ -1216,6 +1228,9 @@ Bit32u Chip::WriteAddr( Bit32u port, Bit8u val ) {
 			return 0x100 | val;
 		else
 			return val;
+		break;
+	default:
+		break;
 	}
 	return 0;
 }
diff --git a/audio/softsynth/opl/dosbox.cpp b/audio/softsynth/opl/dosbox.cpp
index 3d90ec93d0..91e81d6bf2 100644
--- a/audio/softsynth/opl/dosbox.cpp
+++ b/audio/softsynth/opl/dosbox.cpp
@@ -92,36 +92,40 @@ bool Chip::write(uint32 reg, uint8 val) {
 		timer[1].counter = val;
 		return true;
 	case 0x04:
-		double time = g_system->getMillis() / 1000.0;
+		{
+			double time = g_system->getMillis() / 1000.0;
 
-		if (val & 0x80) {
-			timer[0].reset(time);
-			timer[1].reset(time);
-		} else {
-			timer[0].update(time);
-			timer[1].update(time);
+			if (val & 0x80) {
+				timer[0].reset(time);
+				timer[1].reset(time);
+			} else {
+				timer[0].update(time);
+				timer[1].update(time);
 
-			if (val & 0x1)
-				timer[0].start(time, 80);
-			else
-				timer[0].stop();
+				if (val & 0x1)
+					timer[0].start(time, 80);
+				else
+					timer[0].stop();
 
-			timer[0].masked = (val & 0x40) > 0;
+				timer[0].masked = (val & 0x40) > 0;
 
-			if (timer[0].masked)
-				timer[0].overflow = false;
+				if (timer[0].masked)
+					timer[0].overflow = false;
 
-			if (val & 0x2)
-				timer[1].start(time, 320);
-			else
-				timer[1].stop();
+				if (val & 0x2)
+					timer[1].start(time, 320);
+				else
+					timer[1].stop();
 
-			timer[1].masked = (val & 0x20) > 0;
+				timer[1].masked = (val & 0x20) > 0;
 
-			if (timer[1].masked)
-				timer[1].overflow = false;
+				if (timer[1].masked)
+					timer[1].overflow = false;
+			}
 		}
 		return true;
+	default:
+		break;
 	}
 	return false;
 }
@@ -203,6 +207,8 @@ void OPL::write(int port, int val) {
 				dualWrite(1, _reg.dual[1], val);
 			}
 			break;
+		default:
+			break;
 		}
 	} else {
 		// Ask the handler to write the address
@@ -224,6 +230,8 @@ void OPL::write(int port, int val) {
 				_reg.dual[1] = val & 0xff;
 			}
 			break;
+		default:
+			break;
 		}
 	}
 }
@@ -245,6 +253,8 @@ byte OPL::read(int port) {
 			return 0xff;
 		// Make sure the low bits are 6 on opl2
 		return _chip[(port >> 1) & 1].read() | 0x6;
+	default:
+		break;
 	}
 	return 0;
 }
@@ -282,6 +292,8 @@ void OPL::writeReg(int r, int v) {
 			write(0x388, tempReg);
 		}
 		break;
+	default:
+		break;
 	};
 }
 
diff --git a/audio/softsynth/opl/mame.cpp b/audio/softsynth/opl/mame.cpp
index 0903f335cf..6574b46497 100644
--- a/audio/softsynth/opl/mame.cpp
+++ b/audio/softsynth/opl/mame.cpp
@@ -409,6 +409,8 @@ inline uint OPL_CALC_SLOT(OPL_SLOT *SLOT) {
 			SLOT->eve = EG_OFF + 1;
 			SLOT->evs = 0;
 			break;
+		default:
+			break;
 		}
 	}
 	/* calcrate envelope */
@@ -859,6 +861,8 @@ void OPLWriteReg(FM_OPL *OPL, int r, int v) {
 				}
 			}
 			return;
+		default:
+			break;
 		}
 		break;
 	case 0x20:	/* am,vib,ksr,eg type,mul */
@@ -995,6 +999,8 @@ void OPLWriteReg(FM_OPL *OPL, int r, int v) {
 			CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v & 0x03) * SIN_ENT];
 		}
 		return;
+	default:
+		break;
 	}
 }
 
diff --git a/audio/softsynth/opl/nuked.cpp b/audio/softsynth/opl/nuked.cpp
index 273cbdfa18..ce81926ae6 100644
--- a/audio/softsynth/opl/nuked.cpp
+++ b/audio/softsynth/opl/nuked.cpp
@@ -403,6 +403,8 @@ static void OPL3_EnvelopeCalc(opl3_slot *slot)
         case envelope_gen_num_release:
             reg_rate = slot->reg_rr;
             break;
+        default:
+            break;
         }
     }
     slot->pg_reset = reset;
@@ -498,6 +500,8 @@ static void OPL3_EnvelopeCalc(opl3_slot *slot)
             eg_inc = 1 << (shift - 1);
         }
         break;
+    default:
+        break;
     }
     slot->eg_rout = (eg_rout + eg_inc) & 0x1ff;
     // Key off
@@ -845,6 +849,8 @@ static void OPL3_ChannelSetupAlg(opl3_channel *channel)
             channel->slots[0]->mod = &channel->slots[0]->fbmod;
             channel->slots[1]->mod = &channel->chip->zeromod;
             break;
+        default:
+            break;
         }
         return;
     }
@@ -900,6 +906,8 @@ static void OPL3_ChannelSetupAlg(opl3_channel *channel)
             channel->out[2] = &channel->slots[1]->out;
             channel->out[3] = &channel->chip->zeromod;
             break;
+        default:
+            break;
         }
     }
     else
@@ -922,6 +930,8 @@ static void OPL3_ChannelSetupAlg(opl3_channel *channel)
             channel->out[2] = &channel->chip->zeromod;
             channel->out[3] = &channel->chip->zeromod;
             break;
+        default:
+            break;
         }
     }
 }
@@ -1262,6 +1272,8 @@ void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v)
             case 0x05:
                 chip->newm = v & 0x01;
                 break;
+            default:
+                break;
             }
         }
         else
@@ -1271,6 +1283,8 @@ void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v)
             case 0x08:
                 chip->nts = (v >> 6) & 0x01;
                 break;
+            default:
+                break;
             }
         }
         break;
@@ -1341,6 +1355,8 @@ void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v)
             OPL3_ChannelWriteC0(&chip->channel[9 * high + (regm & 0x0f)], v);
         }
         break;
+    default:
+        break;
     }
 }
 
@@ -1424,6 +1440,8 @@ void OPL::write(int port, int val) {
 				dualWrite(1, address[1], val);
 			}
 			break;
+		default:
+			break;
 		}
 	} else {
 		switch (_type) {
@@ -1444,6 +1462,8 @@ void OPL::write(int port, int val) {
 		case Config::kOpl3:
 			address[0] = (val & 0xff) | ((port << 7) & 0x100);
 			break;
+		default:
+			break;
 		}
 	}
 }
diff --git a/audio/softsynth/sid.cpp b/audio/softsynth/sid.cpp
index ac26922514..760916f1d6 100644
--- a/audio/softsynth/sid.cpp
+++ b/audio/softsynth/sid.cpp
@@ -951,6 +951,8 @@ RESID_INLINE void EnvelopeGenerator::updateClock(cycle_count delta_t) {
 				//
 				--envelope_counter &= 0xff;
 				break;
+			default:
+				break;
 			}
 
 			// Check for change of exponential counter period.
@@ -980,6 +982,8 @@ RESID_INLINE void EnvelopeGenerator::updateClock(cycle_count delta_t) {
 				// This has been verified by sampling ENV3.
 				hold_zero = true;
 				break;
+			default:
+				break;
 			}
 		}