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authorN.N. <krzyszcz@users.sourceforge.net>2003-05-27 13:26:00 +0000
committerN.N. <krzyszcz@users.sourceforge.net>2003-05-27 13:26:00 +0000
commit14e404306dd2b8092d59ed3f1720e2d9424f53a9 (patch)
treeff261477efa2907ebf54e84ee4236ada4bf5acd6
parent7d4a9bf63645a4c8d4a1734d2c025b72ef87d90a (diff)
tempo, hook, and delay
svn path=/trunk/externals/miXed/; revision=658
-rw-r--r--cyclone/hammer/seq.c107
1 files changed, 88 insertions, 19 deletions
diff --git a/cyclone/hammer/seq.c b/cyclone/hammer/seq.c
index 503b205..a9d58b6 100644
--- a/cyclone/hammer/seq.c
+++ b/cyclone/hammer/seq.c
@@ -38,6 +38,7 @@ typedef struct _seq
int x_playhead;
float x_tempo;
double x_prevtime;
+ double x_clockdelay;
unsigned char x_status;
int x_evesize;
int x_expectedsize;
@@ -179,7 +180,7 @@ static void seq_stoprecording(t_seq *x)
x->x_isrecording = 0;
}
-static void seq_tick(t_seq *x)
+static void seq_clocktick(t_seq *x)
{
if (x->x_isplaying)
{
@@ -209,7 +210,14 @@ nextevent:
bp = ep->e_bytes;
goto nextevent;
}
- else clock_delay(x->x_clock, ep->e_delta);
+ else
+ {
+ x->x_clockdelay = ep->e_delta * x->x_tempo;
+ if (x->x_clockdelay < 0.)
+ x->x_clockdelay = 0.;
+ clock_delay(x->x_clock, x->x_clockdelay);
+ x->x_prevtime = clock_getlogicaltime();
+ }
}
else
{
@@ -220,14 +228,26 @@ nextevent:
}
}
+static void seq_tick(t_seq *x)
+{
+ /* FIXME */
+}
+
/* CHECKED running status not used in playback */
static void seq_dostart(t_seq *x, float tempo)
{
if (x->x_isplaying)
{
/* CHECKED tempo change */
+ double elapsed = clock_gettimesince(x->x_prevtime);
+ double left = x->x_clockdelay - elapsed;
+ if (left < 0)
+ left = 0;
+ else
+ left *= tempo / x->x_tempo;
+ clock_delay(x->x_clock, x->x_clockdelay = left);
+ x->x_prevtime = clock_getlogicaltime();
x->x_tempo = tempo;
- /* FIXME update the clock */
}
else
{
@@ -241,14 +261,18 @@ static void seq_dostart(t_seq *x, float tempo)
x->x_isplaying = 1;
/* playback data never sent within the scheduler event of
a start message (even for the first delta <= 0), LATER rethink */
- clock_delay(x->x_clock, x->x_sequence->e_delta);
+ x->x_clockdelay = x->x_sequence->e_delta * tempo;
+ if (x->x_clockdelay < 0.)
+ x->x_clockdelay = 0.;
+ clock_delay(x->x_clock, x->x_clockdelay);
+ x->x_prevtime = clock_getlogicaltime();
}
}
}
static void seq_bang(t_seq *x)
{
- seq_dostart(x, 1.0);
+ seq_dostart(x, 1.);
}
static void seq_float(t_seq *x, t_float f)
@@ -290,12 +314,10 @@ static void seq_list(t_seq *x, t_symbol *s, int ac, t_atom *av)
/* CHECKED anything else/more silently ignored */
}
-static void seq_record(t_seq *x)
+static void seq_dorecord(t_seq *x)
{
- /* CHECKED 'record' resets recording */
- if (x->x_isplaying) /* CHECKED 'record' stops playback */
+ if (x->x_isplaying) /* CHECKED 'record' and 'append' stops playback */
seq_stopplayback(x);
- seq_doclear(x, 0);
x->x_isrecording = 1;
x->x_prevtime = clock_getlogicaltime();
x->x_status = 0;
@@ -303,17 +325,34 @@ static void seq_record(t_seq *x)
x->x_expectedsize = -1; /* LATER rethink */
}
+static void seq_record(t_seq *x)
+{
+ /* CHECKED 'record' resets recording */
+ seq_doclear(x, 0);
+ seq_dorecord(x);
+}
+
static void seq_append(t_seq *x)
{
- if (x->x_isrecording)
- return; /* CHECKME 'append' does not reset recording */
- if (x->x_isplaying) /* CHECKME 'append' stops playback */
- seq_stopplayback(x);
- x->x_isrecording = 1;
- x->x_prevtime = clock_getlogicaltime();
- x->x_status = 0;
- x->x_evesize = 0;
- x->x_expectedsize = -1; /* LATER rethink */
+ /* CHECKED if isrecording, 'append' resets the timer */
+ seq_dorecord(x);
+}
+
+static void seq_start(t_seq *x, t_floatarg f)
+{
+ if (f < 0)
+ {
+ /* FIXME */
+ }
+ else
+ {
+ float tempo = (f == 0 ? 1. : 1024. / f);
+ if (tempo < 1e-20)
+ tempo = 1e-20;
+ else if (tempo > 1e20)
+ tempo = 1e20;
+ seq_dostart(x, tempo);
+ }
}
static void seq_stop(t_seq *x)
@@ -324,6 +363,27 @@ static void seq_stop(t_seq *x)
seq_stoprecording(x);
}
+/* CHECKED first delta time is set permanently (it is stored in a file) */
+static void seq_delay(t_seq *x, t_floatarg f)
+{
+ if (x->x_nevents)
+ /* CHECKED signed/unsigned bug, not emulated */
+ x->x_sequence->e_delta = (f > 0 ? f : 0);
+}
+
+/* CHECKED all delta times are set permanently (they are stored in a file) */
+static void seq_hook(t_seq *x, t_floatarg f)
+{
+ int nevents;
+ if (nevents = x->x_nevents)
+ {
+ t_seqevent *ev = x->x_sequence;
+ if (f < 0)
+ f = 0; /* CHECKED signed/unsigned bug, not emulated */
+ while (nevents--) ev++->e_delta *= f;
+ }
+}
+
static int seq_dogrowing(t_seq *x, int nevents)
{
if (nevents > x->x_size)
@@ -780,6 +840,7 @@ static void *seq_new(t_symbol *s)
x->x_canvas = canvas_getcurrent();
x->x_filehandle = hammerfile_new((t_pd *)x, 0,
seq_readhook, seq_writehook, 0);
+ x->x_tempo = 1.;
x->x_prevtime = 0;
x->x_size = SEQ_INISIZE;
x->x_nevents = 0;
@@ -792,7 +853,7 @@ static void *seq_new(t_symbol *s)
seq_doread(x, s, 1);
}
else x->x_defname = &s_;
- x->x_clock = clock_new(x, (t_method)seq_tick);
+ x->x_clock = clock_new(x, (t_method)seq_clocktick);
return (x);
}
@@ -813,8 +874,16 @@ void seq_setup(void)
gensym("record"), 0);
class_addmethod(seq_class, (t_method)seq_append,
gensym("append"), 0);
+ class_addmethod(seq_class, (t_method)seq_start,
+ gensym("start"), A_DEFFLOAT, 0);
class_addmethod(seq_class, (t_method)seq_stop,
gensym("stop"), 0);
+ class_addmethod(seq_class, (t_method)seq_tick,
+ gensym("tick"), 0);
+ class_addmethod(seq_class, (t_method)seq_delay,
+ gensym("delay"), A_FLOAT, 0); /* CHECKED arg obligatory */
+ class_addmethod(seq_class, (t_method)seq_hook,
+ gensym("hook"), A_FLOAT, 0); /* CHECKED arg obligatory */
class_addmethod(seq_class, (t_method)seq_read,
gensym("read"), A_DEFSYM, 0);
class_addmethod(seq_class, (t_method)seq_write,