shithub: neindaw

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add automatic voice management system on the fs level, for now it's only enabled for the kick drum

--- a/dsp/arch.c

+++ b/dsp/arch.c

@@ -14,6 +14,11 @@

 	return memmove(newmydsp(), dsp, sizeof(*dsp));

 }

+static void *statemydsp(mydsp *dsp, int *sz) {

+	*sz = sizeof(*dsp);

+	return dsp;

+}

+

 #define DSP mydsp

 #include "dspf.h"

@@ -21,6 +26,7 @@

 static DSPf dspf = {

 	.new = newmydsp,

 	.clone = clonemydsp,

+	.state = statemydsp,

 	.init = instanceInitmydsp,

 	.delete = deletemydsp,

 	.metadata = metadatamydsp,

--- a/dsp/dspf.h

+++ b/dsp/dspf.h

@@ -1,6 +1,7 @@

 typedef struct {

 	DSP *(*new)(void);

 	DSP *(*clone)(DSP *dsp);

+	void *(*state)(DSP *dsp, int *sz);

 	void (*init)(DSP *dsp, int sample_rate);

 	void (*delete)(DSP *dsp);

 	void (*metadata)(MetaGlue *glue);

--- a/dsp/kick_drum.c

+++ b/dsp/kick_drum.c

@@ -107,8 +107,6 @@

 typedef struct {

 	FAUSTFLOAT fHslider0;

-	FAUSTFLOAT fButton0;

-	float fVec0[2];

 	int fSampleRate;

 	float fConst0;

 	float fConst1;

@@ -116,6 +114,8 @@

 	FAUSTFLOAT fCheckbox0;

 	FAUSTFLOAT fHslider2;

 	FAUSTFLOAT fHslider3;

+	FAUSTFLOAT fButton0;

+	float fVec0[2];

 	int iRec2[2];

 	FAUSTFLOAT fHslider4;

 	float fRec1[2];

@@ -207,11 +207,11 @@

 void instanceResetUserInterfaceKickDrum(KickDrum* dsp) {

 	USED(dsp);

 	dsp->fHslider0 = (FAUSTFLOAT)1.0f;

-	dsp->fButton0 = (FAUSTFLOAT)0.0f;

 	dsp->fHslider1 = (FAUSTFLOAT)100.0f;

 	dsp->fCheckbox0 = (FAUSTFLOAT)0.0f;

 	dsp->fHslider2 = (FAUSTFLOAT)-5.0f;

 	dsp->fHslider3 = (FAUSTFLOAT)0.001f;

+	dsp->fButton0 = (FAUSTFLOAT)0.0f;

 	dsp->fHslider4 = (FAUSTFLOAT)0.001f;

 	dsp->fHslider5 = (FAUSTFLOAT)0.001f;

 	dsp->fHslider6 = (FAUSTFLOAT)0.001f;

@@ -282,7 +282,7 @@

 	ui_interface->openVerticalBox(ui_interface->uiInterface, "B");

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider2, "0", "");

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider2, "unit", "Hz");

-	ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Frequency", &dsp->fHslider2, -5.0f, -5.0f, 200.0f, 5.0f);

+	ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Frequency", &dsp->fHslider2, -5.0f, -200.0f, 200.0f, 1.0f);

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider3, "1", "");

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider3, "unit", "s");

 	ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Attack", &dsp->fHslider3, 0.00100000005f, 9.99999975e-06f, 0.200000003f, 0.00100000005f);

@@ -297,6 +297,7 @@

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "style", "knob");

 	ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Gain", &dsp->fHslider0, 1.0f, 0.0f, 1.0f, 0.00999999978f);

 	ui_interface->declare(ui_interface->uiInterface, &dsp->fButton0, "1", "");

+	ui_interface->declare(ui_interface->uiInterface, &dsp->fButton0, "autovoice", "");

 	ui_interface->addButton(ui_interface->uiInterface, "Gate", &dsp->fButton0);

 	ui_interface->closeBox(ui_interface->uiInterface);

 	ui_interface->closeBox(ui_interface->uiInterface);

@@ -307,11 +308,11 @@

 	USED(dsp);

 	FAUSTFLOAT* output0 = outputs[0];

 	float fSlow0 = (float)dsp->fHslider0;

-	float fSlow1 = (float)dsp->fButton0;

-	float fSlow2 = (float)dsp->fHslider1;

-	float fSlow3 = ((float)dsp->fCheckbox0 * (float)dsp->fHslider2);

-	float fSlow4 = max(1.0f, (dsp->fConst0 * (float)dsp->fHslider3));

-	float fSlow5 = (1.0f / fSlow4);

+	float fSlow1 = (float)dsp->fHslider1;

+	float fSlow2 = ((float)dsp->fCheckbox0 * (float)dsp->fHslider2);

+	float fSlow3 = max(1.0f, (dsp->fConst0 * (float)dsp->fHslider3));

+	float fSlow4 = (1.0f / fSlow3);

+	float fSlow5 = (float)dsp->fButton0;

 	float fSlow6 = (1.0f / max(1.0f, (dsp->fConst0 * (float)dsp->fHslider4)));

 	float fSlow7 = max(1.0f, (dsp->fConst0 * (float)dsp->fHslider5));

 	float fSlow8 = (1.0f / fSlow7);

@@ -320,12 +321,13 @@

 	{

 		int i;

 		for (i = 0; (i < count); i = (i + 1)) {

-			dsp->fVec0[0] = fSlow1;

-			int iTemp0 = (fSlow1 > dsp->fVec0[1]);

-			dsp->iRec2[0] = (iTemp0 + ((fSlow1 <= dsp->fVec0[1]) * (dsp->iRec2[1] + (dsp->iRec2[1] > 0))));

+			dsp->fVec0[0] = fSlow5;

+			int iTemp0 = (fSlow5 > dsp->fVec0[1]);

+			dsp->iRec2[0] = (iTemp0 + ((fSlow5 <= dsp->fVec0[1]) * (dsp->iRec2[1] + (dsp->iRec2[1] > 0))));

 			float fTemp1 = (float)dsp->iRec2[0];

-			float fTemp2 = ((dsp->fRec1[1] * (1.0f - (float)(iTemp0 > 0))) + (dsp->fConst1 * (fSlow2 + (fSlow3 * max(0.0f, min((fSlow5 * fTemp1), (1.0f - (fSlow6 * (fTemp1 - fSlow4)))))))));

-			dsp->fRec1[0] = (fTemp2 - floorf(fTemp2));

+			float fTemp2 = (dsp->fConst1 * (fSlow1 + (fSlow2 * max(0.0f, min((fSlow4 * fTemp1), (1.0f - (fSlow6 * (fTemp1 - fSlow3))))))));

+			float fTemp3 = (dsp->fRec1[1] * ((float)(iTemp0 > 0) + -1.0f));

+			dsp->fRec1[0] = (fTemp2 - (fTemp3 + floorf((fTemp2 - fTemp3))));

 			output0[i] = (FAUSTFLOAT)(fSlow0 * (ftbl0KickDrumSIG0[(int)(65536.0f * dsp->fRec1[0])] * max(0.0f, min((fSlow8 * fTemp1), ((fSlow9 * (fSlow7 - fTemp1)) + 1.0f)))));

 			dsp->fVec0[1] = dsp->fVec0[0];

 			dsp->iRec2[1] = dsp->iRec2[0];

@@ -342,6 +344,11 @@

 	return memmove(newKickDrum(), dsp, sizeof(*dsp));

 }

+static void *stateKickDrum(KickDrum *dsp, int *sz) {

+	*sz = sizeof(*dsp);

+	return dsp;

+}

+

 #define DSP KickDrum

 #include "dspf.h"

@@ -349,6 +356,7 @@

 static DSPf dspf = {

 	.new = newKickDrum,

 	.clone = cloneKickDrum,

+	.state = stateKickDrum,

 	.init = instanceInitKickDrum,

 	.delete = deleteKickDrum,

 	.metadata = metadataKickDrum,

--- a/dsp/kick_drum.dsp

+++ b/dsp/kick_drum.dsp

@@ -8,9 +8,9 @@

 aR = hslider("v:A/[3]Release[unit:s]", 0.001, 0.00001, 1.0, 0.001);

 bA = hslider("v:B/[1]Attack[unit:s]", 0.001, 0.00001, 0.2, 0.001);

 bR = hslider("v:B/[2]Release[unit:s]", 0.001, 0.00001, 1, 0.001);

-bFreq = checkbox("v:B/[3]Enable") * hslider("v:B/[0]Frequency[unit:Hz]", -5, -5, 200, 5);

+bFreq = checkbox("v:B/[3]Enable") * hslider("v:B/[0]Frequency[unit:Hz]", -5, -200, 200, 1);

 gain = hslider("v:Control/[0]Gain[style:knob]", 1, 0, 1, 0.01);

-gate = button("v:Control/[1]Gate");

+gate = button("v:Control/[1]Gate[autovoice]");

 process = os.hs_oscsin(aFreq + bFreq*en.ar(bA, bR, gate), gate : ba.impulsify) * gain * en.ar(aA, aR, gate);

--- a/dsp/main.c

+++ b/dsp/main.c

@@ -10,6 +10,7 @@

 #include "fs.h"

 #include "ui.h"

+/* FIXME figure out how to get the buffering right */

 enum {

 	Inmax = 2048, /* float = 8192 bytes */

 	Outmax = 2048, /* float = 8192 bytes */

@@ -26,7 +27,7 @@

 static DSPf *dspf;

 static Auxdsp *

-dspnew(void)

+dspwrap(void *p)

 {

 	Auxdsp *dsp;

 	int i;

@@ -34,8 +35,7 @@

 	if ((dsp = calloc(1, sizeof(*dsp))) == nil)

 		return nil;

-	dsp->dsp = dspf->new();

-

+	dsp->dsp = p;

 	dsp->in = dsp->out = nil;

 	if ((dsp->numin = dspf->num_in(dsp->dsp)) > 0) {

 		dsp->in = malloc(sizeof(*dsp->in) * dsp->numin);

@@ -50,6 +50,15 @@

 			dsp->out[i] = malloc(sizeof(**dsp->out) * dsp->outmax);

 	}

+	return dsp;

+}

+

+static Auxdsp *

+dspnew(void)

+{

+	Auxdsp *dsp;

+

+	dsp = dspwrap(dspf->new());

 	dspf->init(dsp->dsp, rate);

 	dspf->build_ui(dsp->dsp, &uiglue);

@@ -56,6 +65,29 @@

 	return dsp;

 }

+static Auxdsp *

+dspclone(Auxdsp *dsp)

+{

+	Auxdsp *clone;

+	int i;

+

+	clone = dspwrap(dspf->clone(dsp->dsp));

+	if (clone->in != nil) {

+		/* copy input data */

+		/* FIXME need to set the valid data size when the processing is in */

+		for (i = 0; i < dsp->numin; i++)

+			memmove(clone->in[i], dsp->in[i], sizeof(**dsp->in)*dsp->inmax);

+	}

+

+	return clone;

+}

+

+static void *

+dspstate(Auxdsp *dsp, int *sz)

+{

+	return dspf->state(dsp->dsp, sz);

+}

+

 static void

 dspfree(Auxdsp *dsp)

 {

@@ -102,6 +134,8 @@

 static Fs fs = {

 	.dsp = {

 		.new = dspnew,

+		.clone = dspclone,

+		.state = dspstate,

 		.free = dspfree,

 		.reset = dspreset,

 		.read = dspread,

--- a/fs.c

+++ b/fs.c

@@ -7,6 +7,9 @@

 #include "ui.h"

 #include "fs.h"

+#define MAX(a,b) ((a)>=(b)?(a):(b))

+#define MIN(a,b) ((a)<=(b)?(a):(b))

+

 enum {

 	Maxobjs = 32,

 };

@@ -20,6 +23,7 @@

 };

 extern File *uif;

+extern State *uis;

 static Fs *fs;

@@ -56,7 +60,10 @@

 	closefile(createfile(f, "data", nil, mode, &o->data));

 	uif = f;

-	o->dsp = fs->dsp.new();

+	o->state = uis = calloc(1, sizeof(State));

+	o->state->voice = calloc(1, sizeof(Auxdsp*));

+	o->state->voice[o->state->nvoice++] = fs->dsp.new();

+	o->state->silent = 1;

 	closefile(f);

 	return o;

@@ -65,12 +72,17 @@

 static void

 freeobj(Aux *o)

 {

+	int i;

+

 	if (o == nil)

 		return;

 	if (o->type == Xdsp) {

 		objs[o->id] = nil;

-		fs->dsp.free(o->dsp);

+		for (i = 0; i < o->state->nvoice; i++)

+			fs->dsp.free(o->state->voice[i]);

+		free(o->state->voice);

+		free(o->state);

 	}

 	free(o);

@@ -100,7 +112,68 @@

 	respond(r, nil);

 }

+static int

+auxreaddsp(Aux *a, float *b, int n)

+{

+	State *s;

+	float *m, level;

+	int i, j, x;

+

+	s = a->state;

+	n = fs->dsp.read(s->voice[0], b, n);

+	for (i = 0; i < n && b[i] == 0.0f; i++);

+	s->silent = i != n;

+

+	/* simple case: error, no data, or just one voice */

+	if (n < 1 || s->nvoice < 2)

+		return n;

+

+	/* otherwise need to mix all the voices together */

+	m = s->mixer;

+	if (s->mixersz < n) {

+		s->mixersz = n;

+		if ((m = realloc(m, n*sizeof(float))) == nil) {

+			fprint(2, "no memory for mixer, giving up\n");

+			return n;

+		}

+		s->mixer = m;

+	}

+

+	for (i = 1; i < s->nvoice; i++) {

+		if ((x = fs->dsp.read(s->voice[i], m, n)) != n) /* well that's weird... why wouldn't it work? */

+			fprint(2, "voice %d returned %d samples instead of %d\n", i, x, n);

+

+		level = 0.0f;

+		for (x--; x >= 0; x--) { /* FIXME this could be faster */

+			level = MAX(level, m[x]);

+			b[x] = b[x]+m[x] - b[x]*m[x];

+		}

+		if (level <= 0.0f) { /* this one is silent, delete it */

+			fs->dsp.free(s->voice[i]);

+			s->voice[i] = nil;

+		}

+	}

+

+	/* relocate the voices */

+	for (i = j = 1; i < s->nvoice; i++) {

+		if (s->voice[i] != nil)

+			s->voice[j++] = s->voice[i];

+	}

+	s->nvoice = j;

+

+	return n;

+}

+

 static void

+auxreset(Aux *a)

+{

+	int i;

+

+	for (i = 0; i < a->state->nvoice; i++)

+		fs->dsp.reset(a->state->voice[i]);

+}

+

+static void

 fsread(Req *r)

 {

 	Aux *a, *o;

@@ -136,7 +209,7 @@

 		break;

 	case Xdspdata:

 		o = auxtype2obj(&a->type);

-		r->ofcall.count = fs->dsp.read(o->dsp, (float*)r->ofcall.data, r->ifcall.count/sizeof(float))*sizeof(float);

+		r->ofcall.count = auxreaddsp(o, (float*)r->ofcall.data, r->ifcall.count/sizeof(float))*sizeof(float);

 		respond(r, nil);

 		break;

 	default:

@@ -145,6 +218,48 @@

 	}

 }

+static int

+auxwrite(Aux *a, int type, char *data)

+{

+	State *s;

+	Auxdsp *clone;

+	void *so, *sc;

+	u8int *tmp;

+	int r, sz;

+

+	if (a->ui->writestr == nil) {

+		werrstr("not implemented");

+		return -1;

+	}

+

+	s = a->state;

+	/* autovoice means every write needs to use (possibly) a new instance */

+	if (a->ui->autovoice && !s->silent && fs->dsp.clone != nil && fs->dsp.state != nil) {

+		/* now do the impossible */

+		so = fs->dsp.state(s->voice[0], &sz);

+		tmp = malloc(sz);

+		memmove(tmp, so, sz); /* save the original state */

+		/* write to the original and check if a new voice has to be created */

+		if ((r = a->ui->writestr(a->ui, type, data)) < 0 || *a->ui->zone == 0.0f) {

+			free(tmp);

+			return r;

+		}

+		clone = fs->dsp.clone(s->voice[0]); /* clone the original */

+		sc = fs->dsp.state(clone, &sz);

+		memmove(sc, so, sz); /* copy the changed state to the clone */

+		memmove(so, tmp, sz); /* revert the original state */

+		free(tmp);

+		/* now we have the original dsp intact, with a cloned dsp actually having the changed state */

+

+		s->voice = realloc(s->voice, (s->nvoice+1)*sizeof(*s->voice));

+		s->voice[s->nvoice++] = clone;

+		return r;

+	}

+

+	/* in any other case, just write to the original */

+	return a->ui->writestr(a->ui, type, data);

+}

+

 static void

 fswrite(Req *r)

 {

@@ -164,9 +279,7 @@

 	switch (a->type) {

 	case Xuictl:

 		o = auxtype2obj(&a->type);

-		if (o->ui->writestr == nil)

-			respond(r, "not implemented");

-		else if (o->ui->writestr(o->ui, a->type, b) >= 0)

+		if (auxwrite(o, a->type, b) >= 0)

 			respond(r, nil);

 		else

 			responderror(r);

@@ -174,7 +287,7 @@

 	case Xdspctl: /* FIXME changing sampling rate */

 		o = auxtype2obj(&a->type);

 		if (strncmp(b, "reset", 5) == 0) /* FIXME ui needs to be reset as well */

-			fs->dsp.reset(o->dsp);

+			auxreset(o);

 		respond(r, nil);

 		break;

 	case Xmetadata: /* FIXME should be possible to add new key/value */

--- a/fs.h

+++ b/fs.h

@@ -1,6 +1,7 @@

 typedef struct Aux Aux;

 typedef struct Auxdsp Auxdsp;

 typedef struct Fs Fs;

+typedef struct State State;

 typedef enum {

 	Xclone,

@@ -25,8 +26,8 @@

 	int data;

 	int metadata;

-	Auxdsp *dsp;

 	struct UI *ui;

+	State *state;

 };

 struct Fs {

@@ -38,6 +39,11 @@

 		void (*free)(Auxdsp *dsp);

 		void (*reset)(Auxdsp *dsp);

+		/* optional, atm this one is needed only for autovoicing to work */

+		Auxdsp *(*clone)(Auxdsp *dsp);

+		/* optional, for autovoicing. this is ugly */

+		void *(*state)(Auxdsp *dsp, int *sz);

+

 		/* optional, n is always modulo number of channels */

 		int (*read)(Auxdsp *dsp, float *b, int n);

@@ -44,6 +50,16 @@

 		/* optional, n is always modulo number of channels */

 		int (*write)(Auxdsp *dsp, float *b, int n);

 	}dsp;

+};

+

+struct State {

+	float *mixer;

+	int mixersz;

+

+	Auxdsp **voice;

+	int nvoice;

+

+	int silent; /* that's about the first voice only */

 };

 void fsinit(void *fs);

--- a/ui.c

+++ b/ui.c

@@ -12,9 +12,11 @@

 	float *zone;

 	Meta *meta;

 	int nummeta;

+	int autovoice;

 }decl;

 File *uif;

+State *uis;

 char *

 ui_readstr(UI *ui, int auxtype, char *s, int sz)

@@ -125,7 +127,9 @@

 	memmove(a->ui->meta, decl.meta, sizeof(Meta)*decl.nummeta);

 	a->ctl = Xuictl;

 	a->metadata = Xuimeta;

+	a->state = uis;

 	a->ui->zone = decl.zone;

+	a->ui->autovoice = decl.autovoice;

 	a->ui->label = label;

 	a->ui->readstr = ui_readstr;

 	a->ui->writestr = ui_writestr;

@@ -143,6 +147,7 @@

 	decl.zone = nil;

 	decl.meta = nil;

 	decl.nummeta = 0;

+	decl.autovoice = 0;

 	if (type == UITGroup || type == UIHGroup || type == UIVGroup)

 		uif = d;

@@ -286,4 +291,6 @@

 	decl.meta[decl.nummeta].k = key;

 	decl.meta[decl.nummeta].v = value;

 	decl.nummeta++;

+	if (strcmp(key, "autovoice") == 0)

+		decl.autovoice = 1;

 }

--- a/ui.h

+++ b/ui.h

@@ -18,6 +18,8 @@

 	Meta *meta;

 	int nummeta;

+	int autovoice;

+

 	/* optional */

 	char *(*readstr)(UI *ui, int auxtype, char *s, int sz);

 	int (*writestr)(UI *ui, int auxtype, char *s);