Merge pull request #15 from jackhumbert/master

Merge from qmk

3 files changed, 111 insertions, 9 deletions

diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c
index ead5fbf3e9..2a315fd168 100644
--- a/quantum/audio/audio.c
+++ b/quantum/audio/audio.c
@@ -77,6 +77,7 @@ static bool audio_initialized = false;
 audio_config_t audio_config;
 
 uint16_t envelope_index = 0;
+bool glissando = true;
 
 void audio_init()
 {
@@ -205,13 +206,17 @@ ISR(TIMER3_COMPA_vect)
 					freq = frequencies[voice_place];
 				#endif
 			} else {
-				if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
-					frequency = frequency * pow(2, 440/frequency/12/2);
-				} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
-					frequency = frequency * pow(2, -440/frequency/12/2);
+				if (glissando) {
+					if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
+						frequency = frequency * pow(2, 440/frequency/12/2);
+					} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
+						frequency = frequency * pow(2, -440/frequency/12/2);
+					} else {
+						frequency = frequencies[voices - 1];
+					}
 				} else {
 					frequency = frequencies[voices - 1];
-				}
+				}				
 
 				#ifdef VIBRATO_ENABLE
 					if (vibrato_strength > 0) {
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index 19f7b646ef..8326e91eaa 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -6,6 +6,7 @@
 extern uint16_t envelope_index;
 extern float note_timbre;
 extern float polyphony_rate;
+extern bool glissando;
 
 voice_type voice = default_voice;
 
@@ -27,11 +28,15 @@ float voice_envelope(float frequency) {
 
     switch (voice) {
         case default_voice:
+            glissando = true;
             note_timbre = TIMBRE_50;
             polyphony_rate = 0;
 	        break;
 
+    #ifdef AUDIO_VOICES
+
         case something:
+            glissando = false;
             polyphony_rate = 0;
             switch (compensated_index) {
                 case 0 ... 9:
@@ -43,16 +48,102 @@ float voice_envelope(float frequency) {
                     break;
 
                 case 20 ... 200:
-                    note_timbre = .25 + .125 + pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
+                    note_timbre = .125 + .125;
                     break;
 
                 default:
-                    note_timbre = .25;
+                    note_timbre = .125;
                     break;
             }
             break;
 
+        case drums:
+            glissando = false;
+            polyphony_rate = 0;
+                // switch (compensated_index) {
+                //     case 0 ... 10:
+                //         note_timbre = 0.5;
+                //         break;
+                //     case 11 ... 20:
+                //         note_timbre = 0.5 * (21 - compensated_index) / 10;
+                //         break;
+                //     default:
+                //         note_timbre = 0;
+                //         break;
+                // }
+                // frequency = (rand() % (int)(frequency * 1.2 - frequency)) + (frequency * 0.8);
+
+            if (frequency < 80.0) {
+
+            } else if (frequency < 160.0) {
+
+                // Bass drum: 60 - 100 Hz
+                frequency = (rand() % (int)(40)) + 60;
+                switch (envelope_index) {
+                    case 0 ... 10:
+                        note_timbre = 0.5;
+                        break;
+                    case 11 ... 20:
+                        note_timbre = 0.5 * (21 - envelope_index) / 10;
+                        break;
+                    default:
+                        note_timbre = 0;
+                        break;
+                }
+
+            } else if (frequency < 320.0) {
+
+
+                // Snare drum: 1 - 2 KHz
+                frequency = (rand() % (int)(1000)) + 1000;
+                switch (envelope_index) {
+                    case 0 ... 5:
+                        note_timbre = 0.5;
+                        break;
+                    case 6 ... 20:
+                        note_timbre = 0.5 * (21 - envelope_index) / 15;
+                        break;
+                    default:
+                        note_timbre = 0;
+                        break;
+                }
+
+            } else if (frequency < 640.0) {
+
+                // Closed Hi-hat: 3 - 5 KHz
+                frequency = (rand() % (int)(2000)) + 3000;
+                switch (envelope_index) {
+                    case 0 ... 15:
+                        note_timbre = 0.5;
+                        break;
+                    case 16 ... 20:
+                        note_timbre = 0.5 * (21 - envelope_index) / 5;
+                        break;
+                    default:
+                        note_timbre = 0;
+                        break;
+                }
+
+            } else if (frequency < 1280.0) {
+
+                // Open Hi-hat: 3 - 5 KHz
+                frequency = (rand() % (int)(2000)) + 3000;
+                switch (envelope_index) {
+                    case 0 ... 35:
+                        note_timbre = 0.5;
+                        break;
+                    case 36 ... 50:
+                        note_timbre = 0.5 * (51 - envelope_index) / 15;
+                        break;
+                    default:
+                        note_timbre = 0;
+                        break;
+                }
+
+            }
+            break;
         case butts_fader:
+            glissando = true;
             polyphony_rate = 0;
             switch (compensated_index) {
                 case 0 ... 9:
@@ -100,6 +191,7 @@ float voice_envelope(float frequency) {
 
         case duty_osc:
             // This slows the loop down a substantial amount, so higher notes may freeze
+            glissando = true;
             polyphony_rate = 0;
             switch (compensated_index) {
                 default:
@@ -114,6 +206,7 @@ float voice_envelope(float frequency) {
 	        break;
 
         case duty_octave_down:
+            glissando = true;
             polyphony_rate = 0;
             note_timbre = (envelope_index % 2) * .125 + .375 * 2;
             if ((envelope_index % 4) == 0)
@@ -122,6 +215,7 @@ float voice_envelope(float frequency) {
                 note_timbre = 0;
             break;
         case delayed_vibrato:
+            glissando = true;
             polyphony_rate = 0;
             note_timbre = TIMBRE_50;
             #define VOICE_VIBRATO_DELAY 150
@@ -176,11 +270,11 @@ float voice_envelope(float frequency) {
         //         note_timbre = 0.25;
         //     break;
 
+    #endif
+
 		default:
    			break;
     }
 
     return frequency;
 }
-
-
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index b43def3d7d..52f7e006d6 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -11,7 +11,9 @@ float voice_envelope(float frequency);
 
 typedef enum {
     default_voice,
+    #ifdef AUDIO_VOICES
     something,
+    drums,
     butts_fader,
     octave_crunch,
     duty_osc,
@@ -22,6 +24,7 @@ typedef enum {
     // duty_fourth_down,
     // duty_third_down,
     // duty_fifth_third_down,
+    #endif
     number_of_voices // important that this is last
 } voice_type;