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sarec~.c
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sarec~.c
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#include "MSPd.h"
static t_class *sarec_class;
#define MAXBEATS (256)
#define OBJECT_NAME "sarec~"
#define SAREC_RECORD 1
#define SAREC_OVERDUB 2
#define SAREC_PUNCH 3
#define SAREC_LOCK 4
#define WAVEFORM_UPDATE (22050)
typedef struct _sarec
{
t_object x_obj;
t_float x_f;
long b_valid;
long b_frames;
t_word *b_samples;
long display_counter;
int valid; // status of recording buffer (not yet implemented)
int status; // idle? 0, recording? 1
int mode; // record, overdub or punch
int overdub; // 0 ? write over track, 1: overdub into track
int *armed_chans; // 1, armed, 0, protected
long counter; // sample counter
t_float sync; // position in recording
long start_frame; // start time in samples
long end_frame; // end time in samples
long fadesamps; // number of samples for fades on PUNCH mode
long regionsamps; // use for fade
int channel_count; // number of channels (hopefully!) in buffer
t_float sr;
t_float syncphase;
t_symbol *bufname; // name of recording buffer
t_garray *recbuf;
} t_sarec;
static void *sarec_new(t_symbol *bufname);
// void sarec_region(t_sarec *x, t_symbol *msg, int argc, t_atom *argv);
static void sarec_regionsamps(t_sarec *x, t_floatarg start_frame, t_floatarg end_frame);
static void sarec_region(t_sarec *x, t_floatarg start_time, t_floatarg end_time);
static t_int *sarec_perform(t_int *w);
static void sarec_dsp(t_sarec *x, t_signal **sp);
static void sarec_arm(t_sarec *x, t_floatarg chan);
static void sarec_disarm(t_sarec *x, t_floatarg chan);
static void sarec_attach_buffer(t_sarec *x);
static void sarec_overdub(t_sarec *x);
static void sarec_record(t_sarec *x);
static void sarec_punch(t_sarec *x);
static void sarec_punchfade(t_sarec *x, t_floatarg fadetime);
// static void sarec_tilde_setup(void);
static void sarec_lock(t_sarec *x);
///
void sarec_tilde_setup(void)
{
t_class *c;
c = class_new(gensym("sarec~"),(t_newmethod)sarec_new,0, sizeof(t_sarec),0, A_SYMBOL,0);
CLASS_MAINSIGNALIN(c,t_sarec,x_f);
class_addmethod(c,(t_method)sarec_dsp,gensym("dsp"),A_CANT,0);
class_addmethod(c,(t_method)sarec_arm,gensym("arm"),A_FLOAT,0);
class_addmethod(c,(t_method)sarec_disarm,gensym("disarm"),A_FLOAT,0);
class_addmethod(c,(t_method)sarec_overdub,gensym("overdub"),0);
class_addmethod(c,(t_method)sarec_lock,gensym("lock"),0);
class_addmethod(c,(t_method)sarec_punch,gensym("punch"),0);
class_addmethod(c,(t_method)sarec_punchfade,gensym("punchfade"),A_FLOAT,0);
class_addmethod(c,(t_method)sarec_record,gensym("record"),0);
class_addmethod(c,(t_method)sarec_regionsamps,gensym("regionsamps"),A_FLOAT, A_FLOAT,0);
class_addmethod(c,(t_method)sarec_region,gensym("region"),A_FLOAT, A_FLOAT,0);
sarec_class = c;
potpourri_announce(OBJECT_NAME);
}
void sarec_lock(t_sarec *x)
{
x->mode = SAREC_LOCK;
}
void *sarec_new(t_symbol *bufname)
{
int i;
int chans;
chans = 1; // mono processing only in Pd
t_sarec *x = (t_sarec *)pd_new(sarec_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd,gensym("signal"), gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
x->status = 0;
x->counter = 0;
x->b_valid = 0;
x->bufname = bufname;
x->channel_count = chans;
x->armed_chans = (int *) getbytes(x->channel_count * sizeof(int));
x->display_counter = 0;
x->start_frame = 0;
x->end_frame = 0;
x->overdub = 0;
x->mode = SAREC_RECORD;
x->sr = sys_getsr();
x->fadesamps = x->sr * 0.05; // 50 ms fade time
x->start_frame = -1; // initialize to a bad value
x->end_frame = -1;
x->regionsamps = 0;
for(i = 0; i < x->channel_count; i++) {
x->armed_chans[i] = 1; // all channels armed by default
}
return x;
}
t_int *sarec_perform(t_int *w)
{
int i, j;
t_sarec *x = (t_sarec *) (w[1]);
t_float *click_inlet = (t_float *) (w[2]);
t_float *record_inlet;
t_float *sync;
int channel_count = x->channel_count;
int n;
int next_pointer = channel_count + 5;
int status = x->status;
int counter = x->counter;
int *armed_chans = x->armed_chans;
t_word *samples = x->b_samples;
long b_frames = x->b_frames;
long start_frame = x->start_frame;
long end_frame = x->end_frame;
long b_valid = x->b_valid;
//int overdub = x->overdub;
int mode = x->mode;
long fadesamps = x->fadesamps;
long regionsamps = x->regionsamps;
int clickval;
t_float frak;
t_float goin_up, goin_down;
long counter_msf;
sync = (t_float *) (w[3 + channel_count]);
n = (int) w[4 + channel_count];
if(! b_valid)
goto escape;
if(! regionsamps ) {
x->regionsamps = regionsamps = end_frame - start_frame;
}
for(i = 0; i < n; i++) {
// could be record (1) or overdub (2)
if( click_inlet[i] ) {
clickval = (int) click_inlet[i];
if(clickval == -2) {
status = 0;
counter = 0;
garray_redraw(x->recbuf);
}
else {
// arm all channels
if(clickval == -1) {
// just use all armed channels
}
// arm only one channel - protect against fatal bad index
else if(clickval <= channel_count && clickval > 0) {
for(j=0; j < channel_count; j++) {
armed_chans[j] = 0;
};
armed_chans[clickval - 1] = 1;
// post("arming channel %d", clickval);
}
counter = start_frame;
if(!end_frame) {
end_frame = b_frames;
}
status = 1;
}
}
if(counter >= end_frame) {
counter = 0;
status = 0;
garray_redraw(x->recbuf);
}
// write over track
if(status && (mode == SAREC_RECORD) ) {
for(j=0; j < channel_count; j++) {
if( armed_chans[j] ) {
record_inlet = (t_float *) (w[3 + j]);
samples[ (counter * channel_count) + j].w_float = record_inlet[i];
}
}
counter++;
}
// overdub
else if(status && (mode == SAREC_OVERDUB) ) {
for(j=0; j < channel_count; j++) {
if( armed_chans[j] ) {
record_inlet = (t_float *) (w[3 + j]);
samples[ (counter * channel_count) + j].w_float += record_inlet[i];
}
}
counter++;
}
// punch
else if(status && (mode == SAREC_PUNCH)) {
counter_msf = counter - start_frame;
for(j=0; j < channel_count; j++) {
if( armed_chans[j] ) {
record_inlet = (t_float *) (w[3 + j]);
// frak is multiplier for NEW STUFF, (1-frak) is MULTIPLIER for stuff to fade out
// do power fade though
if( counter_msf < fadesamps ) {
// fade in
frak = (t_float)counter_msf / (t_float)fadesamps;
goin_up = sin(PIOVERTWO * frak);
goin_down = cos(PIOVERTWO * frak);
//post("fadein: %d, up: %f, down: %f", counter_msf, goin_up, goin_down);
samples[ (counter * channel_count) + j].w_float =
(samples[ (counter * channel_count) + j].w_float * goin_down)
+ (record_inlet[i] * goin_up);
} else if ( counter_msf >= (regionsamps - fadesamps) ) {
frak = (t_float) (regionsamps - counter_msf) / (t_float) fadesamps;
// fade out
// frak = (t_float)counter_msf / (t_float)fadesamps;
goin_up = cos(PIOVERTWO * frak);
goin_down = sin(PIOVERTWO * frak);
//post("fadeout: %d, up: %f, down: %f", counter_msf, goin_up, goin_down);
samples[ (counter * channel_count) + j].w_float =
(samples[ (counter * channel_count) + j].w_float * goin_up)
+ (record_inlet[i] * goin_down);
} else {
// straight replace
samples[ (counter * channel_count) + j].w_float = record_inlet[i];
}
}
}
counter++;
}
sync[i] = (t_float) counter / (t_float) b_frames;
}
if(status) {
x->display_counter += n;
if(x->display_counter > WAVEFORM_UPDATE) {
garray_redraw(x->recbuf);
x->display_counter = 0;
}
}
x->end_frame = end_frame;
x->status = status;
x->counter = counter;
escape:
return w + next_pointer;
}
void sarec_overdub(t_sarec *x)
{
x->mode = SAREC_OVERDUB;
}
void sarec_record(t_sarec *x)
{
x->mode = SAREC_RECORD;
}
void sarec_punchfade(t_sarec *x, t_floatarg fadetime)
{
x->fadesamps = x->sr * fadetime * 0.001; // read fade in ms.
//post("punch mode");
}
void sarec_punch(t_sarec *x)
{
x->mode = SAREC_PUNCH;
// post("punch mode");
}
void sarec_disarm(t_sarec *x, t_floatarg chan)
{
// int i;
int ichan = (int) chan;
if(chan <= x->channel_count && chan > 0) {
x->armed_chans[ichan - 1] = 0;
}
}
void sarec_arm(t_sarec *x, t_floatarg chan)
{
int i;
int ichan = (int) chan;
if(ichan == -1) {
for(i = 0; i < x->channel_count; i++) {
x->armed_chans[i] = 1;
}
} else if(ichan == 0)
{
for(i = 0; i < x->channel_count; i++) {
x->armed_chans[i] = 0;
}
} else if(chan <= x->channel_count && chan > 0) {
x->armed_chans[ichan - 1] = 1;
}
}
void sarec_region(t_sarec *x, t_floatarg start_time, t_floatarg end_time)
{
long b_frames = x->b_frames;
long start_frame, end_frame;
t_float sr = x->sr;
// convert milliseconds to samples:
start_frame = (long) (sr * 0.001 * start_time );
end_frame = (long) (sr * 0.001 * end_time );
start_frame = start_frame < 0 || start_frame > b_frames - 1 ? 0 : start_frame;
end_frame = end_frame > b_frames ? b_frames : end_frame;
x->end_frame = end_frame;
x->start_frame = start_frame;
x->regionsamps = end_frame - start_frame;
}
void sarec_regionsamps(t_sarec *x, t_floatarg start_frame, t_floatarg end_frame)
{
long b_frames = x->b_frames;
// long start_frame, end_frame;
//start_frame = (long) atom_getfloatarg(0, argc, argv);
//end_frame = (long) atom_getfloatarg(1, argc, argv);
start_frame = start_frame < 0 || start_frame > b_frames - 1 ? 0 : start_frame;
end_frame = end_frame > b_frames ? b_frames : end_frame;
x->end_frame = (long)end_frame;
x->start_frame = (long)start_frame;
x->regionsamps = end_frame - start_frame;
}
void sarec_attach_buffer(t_sarec *x)
{
t_garray *a;
t_symbol *bufname = x->bufname;
int b_frames;
// t_word *b_samples = x->b_samples;
if (!(a = (t_garray *)pd_findbyclass(bufname, garray_class))) {
if (*bufname->s_name) pd_error(x, "%s: %s: no such array",OBJECT_NAME,bufname->s_name);
x->b_valid = 0;
}
else if (!garray_getfloatwords(a, &b_frames, &x->b_samples)) {
pd_error(x, "%s: bad array for %s", bufname->s_name,OBJECT_NAME);
x->b_valid = 0;
x->b_samples = 0;
}
else {
x->recbuf = a;
x->b_valid = 1; // a->a_valid; ???
x->b_frames = b_frames;
// x->b_samples = b_samples;
garray_usedindsp(a);
}
}
void sarec_dsp(t_sarec *x, t_signal **sp)
{
long i;
t_int **sigvec;
int pointer_count;
pointer_count = x->channel_count + 4;
/* all channels, 1 inlet, 1 sync outlet, the object pointer, vector size N */
sarec_attach_buffer(x);
if( x->start_frame < 0 && x->end_frame < 0) {
x->start_frame = 0;
x->end_frame = x->b_frames;
}
sigvec = (t_int **) getbytes(pointer_count * sizeof(t_int *));
for(i = 0; i < pointer_count; i++) {
sigvec[i] = (t_int *) getbytes(sizeof(t_int) * 1);
}
sigvec[0] = (t_int *)x; // first pointer is to the object
sigvec[pointer_count - 1] = (t_int *)sp[0]->s_n; // last pointer is to vector size (N)
for(i = 1; i < pointer_count - 1; i++){ // now attach the inlet and all outlets
sigvec[i] = (t_int *)sp[i-1]->s_vec;
}
x->sr = sp[0]->s_sr;
dsp_addv(sarec_perform, pointer_count, (t_int *) sigvec);
freebytes(sigvec, pointer_count * sizeof(t_int *));
}