Added rudimentary support for freq-envelopes

todo: pfactor'ed amount
todo: support for compiled notes

plus some tiny bugfixes:
  - in Envelope (get_sustain now returns orig_sustain)
  - parser now uses isnum instead of isfloat where appropriate

7 files changed, 97 insertions, 13 deletions

diff --git a/synth/envelope.h b/synth/envelope.h
index be50fa2..a9bb15b 100644
--- a/synth/envelope.h
+++ b/synth/envelope.h
@@ -35,7 +35,7 @@ class Envelope
 		bool get_hold() { return hold; }
 		jack_nframes_t get_attack() { return attack_orig; }
 		jack_nframes_t get_decay() { return decay_orig; }
-		fixed_t get_sustain() { return sustain; }
+		fixed_t get_sustain() { return sustain_orig; }
 		jack_nframes_t get_release() { return release_orig; }
 		
 		
diff --git a/synth/note.cpp b/synth/note.cpp
index 91291d7..046642f 100644
--- a/synth/note.cpp
+++ b/synth/note.cpp
@@ -27,6 +27,7 @@ Note::Note(int n, float v, program_t &prg, jack_nframes_t pf, fixed_t pb, int pr
 	for (int i=0;i<n_oscillators;i++)
 		pfactor.fm[i]=new fixed_t [n_oscillators];
 	
+	freqfactor_factor=new double[n_oscillators];
 	envval=new fixed_t[n_oscillators];
 	oscval=new fixed_t[n_oscillators];
 	old_oscval=new fixed_t[n_oscillators];
@@ -35,9 +36,13 @@ Note::Note(int n, float v, program_t &prg, jack_nframes_t pf, fixed_t pb, int pr
 		envval[i]=oscval[i]=old_oscval[i]=0;
 	
 	envelope=new Envelope*[n_oscillators];
+	factor_env=new Envelope*[n_oscillators];
 	
 	for (int i=0;i<n_oscillators;i++)
+	{
 		envelope[i]=new Envelope(prg.env_settings[i], envelope_update_frames);
+		factor_env[i]=new Envelope(prg.osc_settings[i].freq_env, envelope_update_frames);
+	}
 	
 	oscillator=new oscillator_t[n_oscillators];
 	orig.oscillator=new oscillator_t[n_oscillators];
@@ -106,13 +111,16 @@ Note::~Note()
 	{
 		delete [] oscillator[i].fm_strength;
 		delete envelope[i];
+		delete factor_env[i];
 		
 		delete [] pfactor.fm[i];
 	}
 	
 	delete [] oscillator;
 	delete [] envelope;
+	delete [] factor_env;
 	
+	delete [] freqfactor_factor;
 	delete [] envval;
 	delete [] oscval;
 	delete [] old_oscval;
@@ -166,7 +174,7 @@ void Note::set_param(const parameter_t &p, fixed_t v) //ACHTUNG:
 		case KSR: oscillator[p.osc].ksr=float(v)/ONE; break;
 		case KSL: oscillator[p.osc].ksl=float(v)/ONE; break;
 
-		case FACTOR: oscillator[p.osc].factor=v; break;
+		case FACTOR: orig.oscillator[p.osc].factor=v; oscillator[p.osc].factor=v*freqfactor_factor[p.osc]; break;
 		case MODULATION: orig.oscillator[p.osc].fm_strength[p.index]=v; apply_pfactor(); break;
 		case OUTPUT: orig.oscillator[p.osc].output=v; apply_pfactor(); break;
 		case TREMOLO: oscillator[p.osc].tremolo_depth=v; break;
@@ -220,6 +228,14 @@ void Note::set_param(const parameter_t &p, fixed_t v) //ACHTUNG:
 		case FILTER_TREM_LFO: filter_params.trem_lfo=v; break;
 		
 		case SYNC_FACTOR: sync_factor=v; break;
+
+		case FREQ_ATTACK: factor_env[p.osc]->set_attack(v*samp_rate >>SCALE); break;
+		case FREQ_DECAY: factor_env[p.osc]->set_decay(v*samp_rate >>SCALE); break;
+		case FREQ_SUSTAIN: factor_env[p.osc]->set_sustain(v); break;
+		case FREQ_RELEASE: factor_env[p.osc]->set_release(v*samp_rate >>SCALE); break;
+		case FREQ_HOLD: factor_env[p.osc]->set_hold((v!=0)); break;
+		case FREQ_ENV_AMOUNT: oscillator[p.osc].freq_env_amount=double(v)/ONE; break;
+
 		default: throw string("trying to set an unknown parameter");
 
 	}
@@ -255,7 +271,10 @@ void Note::release_quickly(jack_nframes_t maxt)
 void Note::release()
 {
 	for (int i=0;i<n_oscillators;i++)
+	{
 		envelope[i]->release_key();
+		factor_env[i]->release_key();
+	}
 	
 	if (filter_params.enabled)
 		filter_envelope->release_key();
@@ -264,7 +283,10 @@ void Note::release()
 void Note::reattack()
 {
 	for (int i=0;i<n_oscillators;i++)
+	{
 		envelope[i]->reattack();	
+		factor_env[i]->reattack();
+	}
 
 	if (filter_params.enabled)
 		filter_envelope->reattack();
@@ -343,7 +365,12 @@ fixed_t Note::get_sample()
 	{
 		env_frame_counter=0;
 		for (i=0;i<n_oscillators;i++)
+		{
 			envval[i]=envelope[i]->get_level();
+			
+			freqfactor_factor[i]=pow(2.0, oscillator[i].freq_env_amount*(factor_env[i]->get_level() - factor_env[i]->get_sustain())/ONE);
+			oscillator[i].factor=orig.oscillator[i].factor*freqfactor_factor[i];
+		}
 	}
 	
 	
diff --git a/synth/note.h b/synth/note.h
index cc043e6..7181f6d 100644
--- a/synth/note.h
+++ b/synth/note.h
@@ -35,6 +35,9 @@ class Note : public NoteSkel
 		
 		int env_frame_counter;
 		
+		double *freqfactor_factor;
+		Envelope **factor_env;
+		
 		fixed_t *envval;
 		fixed_t *oscval;
 		fixed_t *old_oscval;
diff --git a/synth/parser.cpp b/synth/parser.cpp
index 10accac..a6f27cb 100644
--- a/synth/parser.cpp
+++ b/synth/parser.cpp
@@ -198,6 +198,13 @@ void init_oscs(int n_osc, oscillator_t *osc)
 		osc[i].vibrato_depth=0;
 		osc[i].vibrato_lfo=0;
 		osc[i].custom_wave=NULL;
+		
+		osc[i].freq_env_amount=0;
+		osc[i].freq_env.attack=0;
+		osc[i].freq_env.decay=0;
+		osc[i].freq_env.sustain=ONE;
+		osc[i].freq_env.release=-1;
+		osc[i].freq_env.hold=true;
 	}
 }
 
@@ -380,7 +387,7 @@ program_t parse(string fn)
 							osc[ind].output=val*ONE;
 							break;
 						case WAVEFORM:
-							if (isfloat(strval))
+							if (isnum(strval))
 							{
 								osc[ind].waveform=int(val);
 							}
@@ -497,6 +504,26 @@ program_t parse(string fn)
 						case SYNC_FACTOR:
 							sync_factor=val*ONE;
 							break;
+
+						case FREQ_ATTACK:
+							osc[ind].freq_env.attack=val*samp_rate;
+							break;
+						case FREQ_DECAY:
+							osc[ind].freq_env.decay=val*samp_rate;
+							break;
+						case FREQ_SUSTAIN:
+							osc[ind].freq_env.sustain=val*ONE;
+							break;
+						case FREQ_RELEASE:
+							osc[ind].freq_env.release=val*samp_rate;
+							break;
+						case FREQ_HOLD:
+							osc[ind].freq_env.hold=(val!=0);
+							break;
+						case FREQ_ENV_AMOUNT:
+							osc[ind].freq_env_amount=val;
+							break;
+
 						default:
 							throw string("unknown variable ('"+array+"')");
 					}
diff --git a/synth/programs.cpp b/synth/programs.cpp
index b896a06..cfbd9a1 100644
--- a/synth/programs.cpp
+++ b/synth/programs.cpp
@@ -174,6 +174,13 @@ void program_t::set_param(const parameter_t &p, fixed_t v) //ACHTUNG:
 		case FILTER_TREM_LFO: filter_settings.trem_lfo=v; break;
 		
 		case SYNC_FACTOR: sync_factor=v; break;
+
+		case FREQ_ATTACK: osc_settings[p.osc].freq_env.attack=v*samp_rate >>SCALE; break;
+		case FREQ_DECAY: osc_settings[p.osc].freq_env.decay=v*samp_rate >>SCALE; break;
+		case FREQ_SUSTAIN: osc_settings[p.osc].freq_env.sustain=v; break;
+		case FREQ_RELEASE: osc_settings[p.osc].freq_env.release=v*samp_rate >>SCALE; break;
+		case FREQ_HOLD: osc_settings[p.osc].freq_env.hold=(v!=0); break;
+		case FREQ_ENV_AMOUNT: osc_settings[p.osc].freq_env_amount=double(v)/ONE; break;
 		
 		default: throw string("trying to set an unknown parameter");
 	}
diff --git a/synth/programs.h b/synth/programs.h
index 1ed9d6f..6a24db3 100644
--- a/synth/programs.h
+++ b/synth/programs.h
@@ -48,7 +48,12 @@ enum parameter_enum
 	FILTER_TREMOLO,
 	FILTER_TREM_LFO,
 	SYNC_FACTOR,
-
+	FREQ_ATTACK,
+	FREQ_DECAY,
+	FREQ_SUSTAIN,
+	FREQ_RELEASE,
+	FREQ_HOLD,
+	FREQ_ENV_AMOUNT,
 
 	PARAMETER_N_ENTRIES,
 	UNKNOWN=-1
@@ -113,12 +118,24 @@ struct custom_wave_t
 };
 
 
+struct env_settings_t
+{
+	jack_nframes_t attack;
+	jack_nframes_t decay;
+	fixed_t sustain;
+	signed int release;
+	bool hold;
+};
+
 struct oscillator_t
 {
 	fixed_t *fm_strength; //this osc gets modulated by osc #i by fm_strength[i].
 	fixed_t output;       //NOT: osc #i gets modulated by this osc!
 	int waveform;
 	fixed_t factor;
+	float freq_env_amount;
+	env_settings_t freq_env;
+	
 	fixed_t phase;
 	
 	fixed_t tremolo_depth;
@@ -139,15 +156,6 @@ struct oscillator_t
 	oscillator_t& operator=(const oscillator_t &that);
 };
 
-struct env_settings_t
-{
-	jack_nframes_t attack;
-	jack_nframes_t decay;
-	fixed_t sustain;
-	signed int release;
-	bool hold;
-};
-
 struct filter_params_t
 {
 	bool enabled;
diff --git a/synth/util.cpp b/synth/util.cpp
index 2862fdb..c54f2d5 100644
--- a/synth/util.cpp
+++ b/synth/util.cpp
@@ -171,6 +171,18 @@ parameter_enum param_to_enum(string param)
 		return FILTER_TREM_LFO;
 	else if (param=="sync_factor")
 		return SYNC_FACTOR;
+	else if (param=="freq.env_amount")
+		return FREQ_ENV_AMOUNT;
+	else if (param=="freq.attack")
+		return FREQ_ATTACK;
+	else if (param=="freq.decay")
+		return FREQ_DECAY;
+	else if (param=="freq.sustain")
+		return FREQ_SUSTAIN;
+	else if (param=="freq.release")
+		return FREQ_RELEASE;
+	else if (param=="freq.hold")
+		return FREQ_HOLD;
 	else
 		return UNKNOWN;
 }