[Discuss-gnuradio] New blocks for agc, uchar-to_float and char-to_float

[Martin Dvh]

Hi all,
I still have a few new blocks laying around which I wrote a while ago but 
haven't commited yet.
They are generic conversion blocks and an agc block.
I need them for tv reception but they can be used for other things.
Especially the char_to_float block can be used in conjunction with the now 
supported 8 bit captures with the usrp.
(We also need an interleaved char to complex block)

With all the conversions between uchar, char, short,float (and complex) we 
might want to use a template for these instead in the future.

Eric, you could apply the patch or just give a call and I do a commit.

Greetings,
Martin

2005-12-19  Martin Dudok van Heel <nldudok1 at olifantasia.com>

       Addded a new blocks to convert from unsigned char to float and for char 
to float.
       Added new agc block gr_agc_ff based on existing gr_agc block (which 
can't be directly used in a flowgraph).
       All needed for tv-reception.

       * src/lib/general/gr_uchar_to_float.{cc,h,i}: new
       * src/lib/general/gri_uchar_to_float.{cc,h}: new
       * src/lib/general/gr_char_to_float.{cc,h,i}: new
       * src/lib/general/gri_char_to_float.{cc,h}: new
       * src/lib/general/gr_agc_ff.cc: new
       * src/lib/general/gr_agc_ff.h: new
       * src/lib/general/gr_agc_ff.i: new
       * src/lib/general/Makefile.am: changed. Added gr_agc_ff, 
gr_(u)char_to_float and gri_(u)char_to_float.
       * src/lib/general/general.i: changed. Added 
gr_agc_ff,gr_(u)char_to_float and gri_(u)char_to_float.

Index: src/lib/general/Makefile.am
===================================================================
RCS file: /cvsroot/gnuradio/gnuradio-core/src/lib/general/Makefile.am,v
retrieving revision 1.69
diff -u -r1.69 Makefile.am
--- src/lib/general/Makefile.am 18 Dec 2005 00:20:23 -0000      1.69
+++ src/lib/general/Makefile.am 18 Dec 2005 22:57:53 -0000
@@ -145,9 +145,12 @@
        gr_remez.cc                     \
        gr_serial_to_parallel.cc        \
        gr_short_to_float.cc            \
+       gr_char_to_float.cc             \
+       gr_uchar_to_float.cc            \
        gr_simple_framer.cc             \
        gr_simple_correlator.cc         \
        gr_simple_squelch_cc.cc         \
+       gr_agc_ff.cc                \
        gr_stream_to_streams.cc         \
        gr_streams_to_stream.cc         \
        gr_streams_to_vector.cc         \
@@ -169,6 +172,8 @@
        gri_float_to_uchar.cc           \
        gri_float_to_short.cc           \
        gri_short_to_float.cc           \
+       gri_char_to_float.cc            \
+       gri_uchar_to_float.cc           \
        gri_interleaved_short_to_complex.cc \
        malloc16.c                      
 
@@ -236,11 +241,14 @@
        gr_reverse.h                    \
        gr_serial_to_parallel.h         \
        gr_short_to_float.h             \
+       gr_char_to_float.h              \
+       gr_uchar_to_float.h             \
        gr_sig_source_waveform.h        \
        gr_simple_correlator.h          \
        gr_simple_framer.h              \
        gr_simple_framer_sync.h         \
        gr_simple_squelch_cc.h          \
+       gr_agc_ff.h                 \
        gr_stream_to_streams.h          \
        gr_streams_to_stream.h          \
        gr_streams_to_vector.h          \
@@ -265,6 +273,8 @@
        gri_lfsr_15_1_0.h               \
        gri_lfsr_32k.h                  \
        gri_short_to_float.h            \
+       gri_char_to_float.h             \
+       gri_uchar_to_float.h            \
        random.h                        
 
 
@@ -320,8 +330,11 @@
        gr_serial_to_parallel.i         \
        gr_short_to_float.i             \
        gr_simple_correlator.i          \
+       gr_char_to_float.i              \
+       gr_uchar_to_float.i             \
        gr_simple_framer.i              \
        gr_simple_squelch_cc.i          \
+       gr_agc_ff.i                 \
        gr_stream_to_streams.i          \
        gr_streams_to_stream.i          \
        gr_streams_to_vector.i          \
Index: src/lib/general/general.i
===================================================================
RCS file: /cvsroot/gnuradio/gnuradio-core/src/lib/general/general.i,v
retrieving revision 1.42
diff -u -r1.42 general.i
--- src/lib/general/general.i   17 Dec 2005 22:35:22 -0000      1.42
+++ src/lib/general/general.i   18 Dec 2005 22:57:53 -0000
@@ -45,6 +45,8 @@
 #include <gr_float_to_char.h>
 #include <gr_float_to_uchar.h>
 #include <gr_short_to_float.h>
+#include <gr_char_to_float.h>
+#include <gr_uchar_to_float.h>
 #include <gr_frequency_modulator_fc.h>
 #include <gr_bytes_to_syms.h>
 #include <gr_simple_correlator.h>
@@ -55,6 +57,7 @@
 #include <gr_interleave.h>
 #include <gr_deinterleave.h>
 #include <gr_simple_squelch_cc.h>
+#include <gr_agc_ff.h>
 #include <gr_rms_cf.h>
 #include <gr_rms_ff.h>
 #include <gr_nlog10_ff.h>
@@ -105,6 +108,8 @@
 %include "gr_float_to_char.i"
 %include "gr_float_to_uchar.i"
 %include "gr_short_to_float.i"
+%include "gr_char_to_float.i"
+%include "gr_uchar_to_float.i"
 %include "gr_frequency_modulator_fc.i"
 %include "gr_bytes_to_syms.i"
 %include "gr_simple_correlator.i"
@@ -115,6 +120,7 @@
 %include "gr_interleave.i"
 %include "gr_deinterleave.i"
 %include "gr_simple_squelch_cc.i"
+%include "gr_agc_ff.i"
 %include "gr_rms_cf.i"
 %include "gr_rms_ff.i"
 %include "gr_nlog10_ff.i"
Index: src/lib/general/gr_agc_ff.cc
===================================================================
RCS file: src/lib/general/gr_agc_ff.cc
diff -N src/lib/general/gr_agc_ff.cc
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_agc_ff.cc        18 Dec 2005 22:57:53 -0000
@@ -0,0 +1,54 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_agc_ff.h>
+#include <gr_io_signature.h>
+#include <gr_agc.h>
+
+gr_agc_ff_sptr
+gr_make_agc_ff (float rate, float reference, float gain)
+{
+  return gr_agc_ff_sptr (new gr_agc_ff (rate, reference, gain));
+}
+
+gr_agc_ff::gr_agc_ff (float rate, float reference, float gain)
+  : gr_sync_block ("gr_agc_ff",
+                  gr_make_io_signature (1, 1, sizeof (float)),
+                  gr_make_io_signature (1, 1, sizeof (float)))
+  , gr_agc (rate,  reference, gain)
+{
+}
+
+int
+gr_agc_ff::work (int noutput_items,
+                        gr_vector_const_void_star &input_items,
+                        gr_vector_void_star &output_items)
+{
+  const float *in = (const float *) input_items[0];
+  float *out = (float *) output_items[0];
+  scaleN (out, in, noutput_items);
+  return noutput_items;
+}
Index: src/lib/general/gr_agc_ff.h
===================================================================
RCS file: src/lib/general/gr_agc_ff.h
diff -N src/lib/general/gr_agc_ff.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_agc_ff.h 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,52 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef INCLUDED_GR_AGC_FF_H
+#define INCLUDED_GR_AGC_FF_H
+
+#include <gr_sync_block.h>
+#include <gr_agc.h>
+class gr_agc_ff;
+//class gr_agc;
+typedef boost::shared_ptr<gr_agc_ff> gr_agc_ff_sptr;
+
+gr_agc_ff_sptr
+gr_make_agc_ff (float rate = 1e-4, float reference = 1.0, float gain = 1.0);
+/*!
+ * \brief high performance Automatic Gain Control class
+ *
+ * Power is approximated by absolute value
+ */
+
+class gr_agc_ff : public gr_sync_block, gr_agc
+{
+  friend gr_agc_ff_sptr gr_make_agc_ff (float rate, float reference, float 
gain);
+  gr_agc_ff (float rate, float reference, float gain);
+
+ public:
+  virtual int work (int noutput_items,
+                   gr_vector_const_void_star &input_items,
+                   gr_vector_void_star &output_items);
+};
+
+
+#endif /* INCLUDED_GR_FLOAT_AGC_FF_H */
Index: src/lib/general/gr_agc_ff.i
===================================================================
RCS file: src/lib/general/gr_agc_ff.i
diff -N src/lib/general/gr_agc_ff.i
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_agc_ff.i 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,37 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,agc_ff)
+//class gr_agc;
+#include <gr_agc.h>
+//class gr_agc {
+//
+// public:
+//  gr_agc (float rate = 1e-4, float reference = 1.0, float gain = 1.0)
+//  };
+gr_agc_ff_sptr
+gr_make_agc_ff (float rate = 1e-4, float reference = 1.0, float gain = 1.0);
+
+class gr_agc_ff : public gr_sync_block, gr_agc
+{
+  gr_agc_ff (float rate, float reference, float gain);
+};
Index: src/lib/general/gr_char_to_float.cc
===================================================================
RCS file: src/lib/general/gr_char_to_float.cc
diff -N src/lib/general/gr_char_to_float.cc
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_char_to_float.cc 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,55 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_char_to_float.h>
+#include <gr_io_signature.h>
+#include <gri_char_to_float.h>
+
+gr_char_to_float_sptr
+gr_make_char_to_float ()
+{
+  return gr_char_to_float_sptr (new gr_char_to_float ());
+}
+
+gr_char_to_float::gr_char_to_float ()
+  : gr_sync_block ("gr_char_to_float",
+                  gr_make_io_signature (1, 1, sizeof (char)),
+                  gr_make_io_signature (1, 1, sizeof (float)))
+{
+}
+
+int
+gr_char_to_float::work (int noutput_items,
+                        gr_vector_const_void_star &input_items,
+                        gr_vector_void_star &output_items)
+{
+  const char *in = (const char *) input_items[0];
+  float *out = (float *) output_items[0];
+
+  gri_char_to_float (in, out, noutput_items);
+  
+  return noutput_items;
+}
Index: src/lib/general/gr_char_to_float.h
===================================================================
RCS file: src/lib/general/gr_char_to_float.h
diff -N src/lib/general/gr_char_to_float.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_char_to_float.h  18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,51 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef INCLUDED_GR_CHAR_TO_FLOAT_H
+#define INCLUDED_GR_CHAR_TO_FLOAT_H
+
+#include <gr_sync_block.h>
+
+class gr_char_to_float;
+typedef boost::shared_ptr<gr_char_to_float> gr_char_to_float_sptr;
+
+gr_char_to_float_sptr
+gr_make_char_to_float ();
+
+/*!
+ * \brief Convert stream of chars to a stream of float
+ * \ingroup converter
+ */
+
+class gr_char_to_float : public gr_sync_block
+{
+  friend gr_char_to_float_sptr gr_make_char_to_float ();
+  gr_char_to_float ();
+
+ public:
+  virtual int work (int noutput_items,
+                   gr_vector_const_void_star &input_items,
+                   gr_vector_void_star &output_items);
+};
+
+
+#endif /* INCLUDED_GR_CHAR_TO_FLOAT_H */
Index: src/lib/general/gr_char_to_float.i
===================================================================
RCS file: src/lib/general/gr_char_to_float.i
diff -N src/lib/general/gr_char_to_float.i
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_char_to_float.i  18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,30 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,char_to_float)
+
+gr_char_to_float_sptr gr_make_char_to_float ();
+
+class gr_char_to_float : public gr_sync_block
+{
+  gr_char_to_float ();
+};
Index: src/lib/general/gr_uchar_to_float.cc
===================================================================
RCS file: src/lib/general/gr_uchar_to_float.cc
diff -N src/lib/general/gr_uchar_to_float.cc
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_uchar_to_float.cc        18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,55 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_uchar_to_float.h>
+#include <gr_io_signature.h>
+#include <gri_uchar_to_float.h>
+
+gr_uchar_to_float_sptr
+gr_make_uchar_to_float ()
+{
+  return gr_uchar_to_float_sptr (new gr_uchar_to_float ());
+}
+
+gr_uchar_to_float::gr_uchar_to_float ()
+  : gr_sync_block ("gr_uchar_to_float",
+                  gr_make_io_signature (1, 1, sizeof (unsigned char)),
+                  gr_make_io_signature (1, 1, sizeof (float)))
+{
+}
+
+int
+gr_uchar_to_float::work (int noutput_items,
+                        gr_vector_const_void_star &input_items,
+                        gr_vector_void_star &output_items)
+{
+  const unsigned char *in = (const unsigned char *) input_items[0];
+  float *out = (float *) output_items[0];
+
+  gri_uchar_to_float (in, out, noutput_items);
+  
+  return noutput_items;
+}
Index: src/lib/general/gr_uchar_to_float.h
===================================================================
RCS file: src/lib/general/gr_uchar_to_float.h
diff -N src/lib/general/gr_uchar_to_float.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_uchar_to_float.h 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,51 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef INCLUDED_GR_UCHAR_TO_FLOAT_H
+#define INCLUDED_GR_UCHAR_TO_FLOAT_H
+
+#include <gr_sync_block.h>
+
+class gr_uchar_to_float;
+typedef boost::shared_ptr<gr_uchar_to_float> gr_uchar_to_float_sptr;
+
+gr_uchar_to_float_sptr
+gr_make_uchar_to_float ();
+
+/*!
+ * \brief Convert stream of unsigned chars to a stream of float
+ * \ingroup converter
+ */
+
+class gr_uchar_to_float : public gr_sync_block
+{
+  friend gr_uchar_to_float_sptr gr_make_uchar_to_float ();
+  gr_uchar_to_float ();
+
+ public:
+  virtual int work (int noutput_items,
+                   gr_vector_const_void_star &input_items,
+                   gr_vector_void_star &output_items);
+};
+
+
+#endif /* INCLUDED_GR_UCHAR_TO_FLOAT_H */
Index: src/lib/general/gr_uchar_to_float.i
===================================================================
RCS file: src/lib/general/gr_uchar_to_float.i
diff -N src/lib/general/gr_uchar_to_float.i
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gr_uchar_to_float.i 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,30 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,uchar_to_float)
+
+gr_uchar_to_float_sptr gr_make_uchar_to_float ();
+
+class gr_uchar_to_float : public gr_sync_block
+{
+  gr_uchar_to_float ();
+};
Index: src/lib/general/gri_char_to_float.cc
===================================================================
RCS file: src/lib/general/gri_char_to_float.cc
diff -N src/lib/general/gri_char_to_float.cc
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gri_char_to_float.cc        18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,40 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gri_char_to_float.h>
+
+void 
+gri_char_to_float (const char *in, float *out, int nsamples)
+{
+  while (nsamples >= 4){
+    out[0] = in[0];
+    out[1] = in[1];
+    out[2] = in[2];
+    out[3] = in[3];
+    out += 4;
+    in += 4;
+    nsamples -= 4;
+  }
+
+  while (nsamples-- > 0)
+    *out++ = *in++;
+}
Index: src/lib/general/gri_char_to_float.h
===================================================================
RCS file: src/lib/general/gri_char_to_float.h
diff -N src/lib/general/gri_char_to_float.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gri_char_to_float.h 18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,32 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef INCLUDED_GRI_CHAR_TO_FLOAT_H
+#define INCLUDED_GRI_CHAR_TO_FLOAT_H
+
+/*
+ * convert array of chars to floats
+ */
+void gri_char_to_float (const char *in, float *out, int nsamples);
+
+
+#endif /* INCLUDED_GRI_CHAR_TO_FLOAT_H */
Index: src/lib/general/gri_uchar_to_float.cc
===================================================================
RCS file: src/lib/general/gri_uchar_to_float.cc
diff -N src/lib/general/gri_uchar_to_float.cc
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gri_uchar_to_float.cc       18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,40 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gri_uchar_to_float.h>
+
+void 
+gri_uchar_to_float (const unsigned char *in, float *out, int nsamples)
+{
+  while (nsamples >= 4){
+    out[0] = in[0];
+    out[1] = in[1];
+    out[2] = in[2];
+    out[3] = in[3];
+    out += 4;
+    in += 4;
+    nsamples -= 4;
+  }
+
+  while (nsamples-- > 0)
+    *out++ = *in++;
+}
Index: src/lib/general/gri_uchar_to_float.h
===================================================================
RCS file: src/lib/general/gri_uchar_to_float.h
diff -N src/lib/general/gri_uchar_to_float.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ src/lib/general/gri_uchar_to_float.h        18 Dec 2005 22:57:54 -0000
@@ -0,0 +1,32 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef INCLUDED_GRI_UCHAR_TO_FLOAT_H
+#define INCLUDED_GRI_UCHAR_TO_FLOAT_H
+
+/*
+ * convert array of unsigned chars to floats
+ */
+void gri_uchar_to_float (const unsigned char *in, float *out, int nsamples);
+
+
+#endif /* INCLUDED_GRI_UCHAR_TO_FLOAT_H */