From f19687f2bd42e6a147f813407db44c145e7bf7b5 Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Mon, 3 Nov 2008 10:10:12 +0000
Subject: [mtx_unpack~] added to complete [mtx_pack~]

svn path=/trunk/externals/iem/iemmatrix/; revision=10355
---
 src/mtx_unpack~.c | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 src/mtx_unpack~.c

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

diff --git a/src/mtx_unpack~.c b/src/mtx_unpack~.c
new file mode 100644
index 0000000..5f5c294
--- /dev/null
+++ b/src/mtx_unpack~.c
@@ -0,0 +1,159 @@
+#include "iemmatrix.h"
+#define MTX_PACK_MAXCHANNELS 200
+
+static t_class *mtx_unpack_tilde_class;
+
+typedef struct _mtx_unpack_tilde {
+   t_object x_obj;
+   int rows;
+   int cols;
+   int block_size;
+   int num_chan;
+   t_float **sig_out;
+   t_atom *list_in;
+   t_int *(*perform_fcn)(t_int*);
+} mtx_unpack_tilde;
+
+static t_int *mTxUnPackTildePerform (t_int *arg) {
+   mtx_unpack_tilde *x = (mtx_unpack_tilde *) (arg[1]);
+   return (x->perform_fcn(arg));
+}
+
+
+static t_int *mTxUnPackTildePerformInactive (t_int *arg)
+{
+   return(arg+2);
+}
+
+static t_int *mTxUnPackTildePerformSetInactive (t_int *arg)
+{
+   mtx_unpack_tilde *x = (mtx_unpack_tilde *) (arg[1]);
+   int chan;
+   int samp;
+   t_atom *lptr=x->list_in;
+
+   for (chan=0; chan<x->num_chan; chan++) {
+      for (samp=0; samp<x->block_size; samp++) {
+	 x->sig_out[chan][samp]=0;
+      }
+      lptr+=x->cols;
+   }
+   x->perform_fcn=mTxUnPackTildePerformInactive;
+   return(arg+2);
+}
+
+static t_int *mTxUnPackTildePerformActive (t_int *arg)
+{
+   mtx_unpack_tilde *x = (mtx_unpack_tilde *) (arg[1]);
+   int chan;
+   int samp;
+   const int maxchan = (x->rows < x->num_chan)   ? x->rows : x->num_chan;
+   const int maxsamp = (x->cols < x->block_size) ? x->cols : x->block_size;
+   t_atom *lptr=x->list_in;
+
+   for (chan=0; chan<maxchan; chan++) {
+      for (samp=0; samp<maxsamp; samp++) {
+	 x->sig_out[chan][samp]=atom_getfloat(&lptr[samp]);
+      }
+      lptr+=x->cols;
+   }
+
+   // zero missing signal samples
+   lptr=x->list_in;
+   for (chan=0; chan<maxchan; chan++) {
+      for (; samp<x->block_size; samp++) {
+	 x->sig_out[chan][samp]=0;
+      lptr+=x->cols;
+      }
+   }
+   // zero missing channels
+   for (chan=maxchan; chan<x->num_chan; chan++) {
+      for (samp=0; samp<x->block_size; samp++) {
+	 x->sig_out[chan][samp]=0;
+      }
+      lptr+=x->cols;
+   }
+
+   // delete in the next dsp cycle, unless overwritten
+   // by new matrix:
+   x->perform_fcn=mTxUnPackTildePerformSetInactive;
+
+   return(arg+2);
+}
+
+
+void *newMtxUnPackTilde (t_floatarg f)
+{
+   int num_chan=1;
+   mtx_unpack_tilde *x = (mtx_unpack_tilde*) pd_new(mtx_unpack_tilde_class);
+   num_chan=(int)f;
+   if ((num_chan<1) || (num_chan>MTX_PACK_MAXCHANNELS)) {
+      num_chan=1;
+   }
+   x->num_chan=num_chan;
+   x->sig_out=0;
+   x->list_in=0;
+   x->rows=0;
+   x->cols=0;
+   x->perform_fcn=mTxUnPackTildePerformInactive;
+   while (num_chan--) {
+      outlet_new(&x->x_obj, &s_signal);
+   }
+   x->sig_out = (t_float**)getbytes(sizeof(t_float*)*x->num_chan);
+
+   return (void *) x;
+}
+void deleteMtxUnPackTilde (mtx_unpack_tilde *x)
+{
+   if (x->sig_out)
+      freebytes (x->sig_out, x->num_chan * sizeof (t_float));
+}
+static void mTxUnPackTildeMatrix (mtx_unpack_tilde *x, t_symbol *s, int argc, t_atom *argv) {
+   int rows, cols;
+   if (argc<2) {
+      post("[mtx_unpack~]: corrupt matrix passed!");
+      x->rows=0;
+      x->cols=0;
+   }
+   else {
+      rows=(int) atom_getfloat (argv++);
+      cols=(int) atom_getfloat (argv++);
+      argc-=2;
+      if ((rows<1)||(cols<1)||(rows*cols < argc)) {
+	 post("[mtx_unpack~]: corrupt matrix passed!");
+	 x->rows=0;
+	 x->cols=0;
+      }
+      else {
+	 x->rows=rows;
+	 x->cols=cols;
+	 x->list_in=argv;
+	 x->perform_fcn=mTxUnPackTildePerformActive;
+      }
+   }
+}
+
+static void mTxUnPackTildeDsp (mtx_unpack_tilde *x, t_signal **sp)
+{
+   int chan;
+   for (chan=0; chan<x->num_chan; chan++)
+       x->sig_out[chan]=sp[chan]->s_vec;
+
+   x->block_size=sp[0]->s_n;
+   x->perform_fcn=mTxUnPackTildePerformInactive;
+   dsp_add(mTxUnPackTildePerform,1,x);
+}
+
+void mtx_unpack_tilde_setup (void)
+{
+   mtx_unpack_tilde_class = class_new(gensym("mtx_unpack~"), (t_newmethod)newMtxUnPackTilde, (t_method) deleteMtxUnPackTilde, sizeof(mtx_unpack_tilde), CLASS_DEFAULT, A_DEFFLOAT, 0);
+   class_addmethod (mtx_unpack_tilde_class, (t_method) mTxUnPackTildeMatrix, gensym("matrix"),A_GIMME,0);
+   class_addmethod (mtx_unpack_tilde_class, (t_method) mTxUnPackTildeDsp, gensym("dsp"),0);
+}
+
+void iemtx_unpack__setup(void)
+{
+   mtx_unpack_tilde_setup();
+}
+
+
-- 
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