From c91acb086ab4c95cef4feb0da4265a09f73a1201 Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Wed, 22 Oct 2008 12:38:10 +0000
Subject: added [mtx_sndfile] which reads blocks of an audiofile and  
 [mtx_pack~]   which packs the sample vectors of its signal inputs into a
 matrix.

svn path=/trunk/externals/iem/iemmatrix/; revision=10336
---
 src/mtx_pack~.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 src/mtx_pack~.c

(limited to 'src/mtx_pack~.c')

diff --git a/src/mtx_pack~.c b/src/mtx_pack~.c
new file mode 100644
index 0000000..c935d10
--- /dev/null
+++ b/src/mtx_pack~.c
@@ -0,0 +1,80 @@
+#include "m_pd.h"
+#define MTX_PACK_MAXCHANNELS 200
+
+static t_class *mtx_pack_tilde_class;
+
+typedef struct _mtx_pack_tilde {
+   t_object x_obj;
+   int block_size;
+   int num_chan;
+   t_float **sig_in;
+   t_atom *list_out;
+   t_outlet *message_outlet;
+} mtx_pack_tilde;
+
+void *newMtxPackTilde (t_floatarg f)
+{
+   int num_chan=1;
+   mtx_pack_tilde *x = (mtx_pack_tilde*) pd_new(mtx_pack_tilde_class);
+   num_chan=(int)f;
+   if ((num_chan<0) || (num_chan>MTX_PACK_MAXCHANNELS)) {
+      num_chan=1;
+   }
+   x->num_chan=num_chan;
+   x->sig_in=0;
+   x->list_out=0;
+   while (num_chan--) {
+      inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+   }
+   x->sig_in = (t_float**)getbytes(sizeof(t_float*)*x->num_chan);
+   x->message_outlet=(t_outlet*)outlet_new(&x->x_obj,&s_list);
+
+   return (void *) x;
+}
+void deleteMtxPackTilde (mtx_pack_tilde *x)
+{
+   if (x->sig_in)
+      freebytes (x->sig_in, x->num_chan * sizeof (t_float));
+   if (x->list_out)
+      freebytes (x->list_out, (x->num_chan * x->block_size + 2)*sizeof(t_atom));
+}
+static t_int *mTxPackTildePerform (t_int *arg)
+{
+   mtx_pack_tilde *x = (mtx_pack_tilde *) (arg[1]);
+   int chan;
+   int samp;
+   t_atom *lptr=x->list_out+2;
+   SETFLOAT(x->list_out,(t_float)x->num_chan);
+   SETFLOAT(x->list_out+1,(t_float)x->block_size);
+
+   for (chan=0; chan<x->num_chan; chan++) {
+      for (samp=0; samp<x->block_size; samp++,lptr++) {
+         SETFLOAT(lptr, x->sig_in[chan][samp]);
+      }
+   }
+
+   outlet_anything(x->message_outlet,gensym("matrix"),
+         x->block_size*x->num_chan+2,x->list_out);
+
+   return(arg+2);
+
+}
+
+static void mTxPackTildeDsp (mtx_pack_tilde *x, t_signal **sp)
+{
+   int chan;
+   for (chan=0; chan<x->num_chan; chan++)
+       x->sig_in[chan]=sp[chan]->s_vec;
+
+   x->block_size=sp[0]->s_n;
+   x->list_out = (t_atom*) getbytes ((x->num_chan * x->block_size + 2) *sizeof(t_atom));
+   dsp_add(mTxPackTildePerform,1,x);
+}
+
+void mtx_pack_tilde_setup (void)
+{
+   mtx_pack_tilde_class = class_new(gensym("mtx_pack~"), (t_newmethod)newMtxPackTilde, (t_method) deleteMtxPackTilde, sizeof(mtx_pack_tilde), CLASS_NOINLET, A_DEFFLOAT, 0);
+   class_addmethod (mtx_pack_tilde_class, (t_method) mTxPackTildeDsp, gensym("dsp"),0);
+}
+
+
-- 
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