diff options
Diffstat (limited to 'gr-howto-write-a-block/lib')
| -rw-r--r-- | gr-howto-write-a-block/lib/.gitignore | 11 | ||||
| -rw-r--r-- | gr-howto-write-a-block/lib/Makefile.am | 42 | ||||
| -rw-r--r-- | gr-howto-write-a-block/lib/howto_square2_ff.cc | 92 | ||||
| -rw-r--r-- | gr-howto-write-a-block/lib/howto_square2_ff.h | 77 | ||||
| -rw-r--r-- | gr-howto-write-a-block/lib/howto_square_ff.cc | 98 | ||||
| -rw-r--r-- | gr-howto-write-a-block/lib/howto_square_ff.h | 78 |
6 files changed, 398 insertions, 0 deletions
diff --git a/gr-howto-write-a-block/lib/.gitignore b/gr-howto-write-a-block/lib/.gitignore new file mode 100644 index 000000000..d957a6821 --- /dev/null +++ b/gr-howto-write-a-block/lib/.gitignore @@ -0,0 +1,11 @@ +/Makefile +/Makefile.in +/.la +/.lo +/.deps +/.libs +/*.la +/*.lo +/*.pyc +/howto.cc +/howto.py diff --git a/gr-howto-write-a-block/lib/Makefile.am b/gr-howto-write-a-block/lib/Makefile.am new file mode 100644 index 000000000..e553c193d --- /dev/null +++ b/gr-howto-write-a-block/lib/Makefile.am @@ -0,0 +1,42 @@ +# +# Copyright 2004,2005,2006,2008,2009 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 3, 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., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +include $(top_srcdir)/Makefile.common + +################################### +# howto C++ library + +# C/C++ headers get installed in ${prefix}/include/gnuradio +grinclude_HEADERS = \ + howto_square_ff.h \ + howto_square2_ff.h + +lib_LTLIBRARIES = libgnuradio-howto.la + +libgnuradio_howto_la_SOURCES = \ + howto_square_ff.cc \ + howto_square2_ff.cc + +libgnuradio_howto_la_LIBADD = \ + $(GNURADIO_CORE_LA) + +libgnuradio_howto_la_LDFLAGS = \ + $(NO_UNDEFINED) diff --git a/gr-howto-write-a-block/lib/howto_square2_ff.cc b/gr-howto-write-a-block/lib/howto_square2_ff.cc new file mode 100644 index 000000000..e86db93dd --- /dev/null +++ b/gr-howto-write-a-block/lib/howto_square2_ff.cc @@ -0,0 +1,92 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004 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 3, 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., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + +/* + * config.h is generated by configure. It contains the results + * of probing for features, options etc. It should be the first + * file included in your .cc file. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <howto_square2_ff.h> +#include <gr_io_signature.h> + +/* + * Create a new instance of howto_square2_ff and return + * a boost shared_ptr. This is effectively the public constructor. + */ +howto_square2_ff_sptr +howto_make_square2_ff () +{ + return howto_square2_ff_sptr (new howto_square2_ff ()); +} + +/* + * Specify constraints on number of input and output streams. + * This info is used to construct the input and output signatures + * (2nd & 3rd args to gr_block's constructor). The input and + * output signatures are used by the runtime system to + * check that a valid number and type of inputs and outputs + * are connected to this block. In this case, we accept + * only 1 input and 1 output. + */ +static const int MIN_IN = 1; // mininum number of input streams +static const int MAX_IN = 1; // maximum number of input streams +static const int MIN_OUT = 1; // minimum number of output streams +static const int MAX_OUT = 1; // maximum number of output streams + +/* + * The private constructor + */ +howto_square2_ff::howto_square2_ff () + : gr_sync_block ("square2_ff", + gr_make_io_signature (MIN_IN, MAX_IN, sizeof (float)), + gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (float))) +{ + // nothing else required in this example +} + +/* + * Our virtual destructor. + */ +howto_square2_ff::~howto_square2_ff () +{ + // nothing else required in this example +} + +int +howto_square2_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]; + + for (int i = 0; i < noutput_items; i++){ + out[i] = in[i] * in[i]; + } + + // Tell runtime system how many output items we produced. + return noutput_items; +} diff --git a/gr-howto-write-a-block/lib/howto_square2_ff.h b/gr-howto-write-a-block/lib/howto_square2_ff.h new file mode 100644 index 000000000..536b04fab --- /dev/null +++ b/gr-howto-write-a-block/lib/howto_square2_ff.h @@ -0,0 +1,77 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004 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 3, 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., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ +#ifndef INCLUDED_HOWTO_SQUARE2_FF_H +#define INCLUDED_HOWTO_SQUARE2_FF_H + +#include <gr_sync_block.h> + +class howto_square2_ff; + +/* + * We use boost::shared_ptr's instead of raw pointers for all access + * to gr_blocks (and many other data structures). The shared_ptr gets + * us transparent reference counting, which greatly simplifies storage + * management issues. This is especially helpful in our hybrid + * C++ / Python system. + * + * See http://www.boost.org/libs/smart_ptr/smart_ptr.htm + * + * As a convention, the _sptr suffix indicates a boost::shared_ptr + */ +typedef boost::shared_ptr<howto_square2_ff> howto_square2_ff_sptr; + +/*! + * \brief Return a shared_ptr to a new instance of howto_square2_ff. + * + * To avoid accidental use of raw pointers, howto_square2_ff's + * constructor is private. howto_make_square2_ff is the public + * interface for creating new instances. + */ +howto_square2_ff_sptr howto_make_square2_ff (); + +/*! + * \brief square2 a stream of floats. + * \ingroup block + * + * This uses the preferred technique: subclassing gr_sync_block. + */ +class howto_square2_ff : public gr_sync_block +{ +private: + // The friend declaration allows howto_make_square2_ff to + // access the private constructor. + + friend howto_square2_ff_sptr howto_make_square2_ff (); + + howto_square2_ff (); // private constructor + + public: + ~howto_square2_ff (); // public destructor + + // Where all the action really happens + + int work (int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); +}; + +#endif /* INCLUDED_HOWTO_SQUARE2_FF_H */ diff --git a/gr-howto-write-a-block/lib/howto_square_ff.cc b/gr-howto-write-a-block/lib/howto_square_ff.cc new file mode 100644 index 000000000..5ab45d1f2 --- /dev/null +++ b/gr-howto-write-a-block/lib/howto_square_ff.cc @@ -0,0 +1,98 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004 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 3, 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., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + +/* + * config.h is generated by configure. It contains the results + * of probing for features, options etc. It should be the first + * file included in your .cc file. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <howto_square_ff.h> +#include <gr_io_signature.h> + +/* + * Create a new instance of howto_square_ff and return + * a boost shared_ptr. This is effectively the public constructor. + */ +howto_square_ff_sptr +howto_make_square_ff () +{ + return howto_square_ff_sptr (new howto_square_ff ()); +} + +/* + * Specify constraints on number of input and output streams. + * This info is used to construct the input and output signatures + * (2nd & 3rd args to gr_block's constructor). The input and + * output signatures are used by the runtime system to + * check that a valid number and type of inputs and outputs + * are connected to this block. In this case, we accept + * only 1 input and 1 output. + */ +static const int MIN_IN = 1; // mininum number of input streams +static const int MAX_IN = 1; // maximum number of input streams +static const int MIN_OUT = 1; // minimum number of output streams +static const int MAX_OUT = 1; // maximum number of output streams + +/* + * The private constructor + */ +howto_square_ff::howto_square_ff () + : gr_block ("square_ff", + gr_make_io_signature (MIN_IN, MAX_IN, sizeof (float)), + gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (float))) +{ + // nothing else required in this example +} + +/* + * Our virtual destructor. + */ +howto_square_ff::~howto_square_ff () +{ + // nothing else required in this example +} + +int +howto_square_ff::general_work (int noutput_items, + gr_vector_int &ninput_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]; + + for (int i = 0; i < noutput_items; i++){ + out[i] = in[i] * in[i]; + } + + // Tell runtime system how many input items we consumed on + // each input stream. + + consume_each (noutput_items); + + // Tell runtime system how many output items we produced. + return noutput_items; +} diff --git a/gr-howto-write-a-block/lib/howto_square_ff.h b/gr-howto-write-a-block/lib/howto_square_ff.h new file mode 100644 index 000000000..092b93698 --- /dev/null +++ b/gr-howto-write-a-block/lib/howto_square_ff.h @@ -0,0 +1,78 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004 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 3, 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., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ +#ifndef INCLUDED_HOWTO_SQUARE_FF_H +#define INCLUDED_HOWTO_SQUARE_FF_H + +#include <gr_block.h> + +class howto_square_ff; + +/* + * We use boost::shared_ptr's instead of raw pointers for all access + * to gr_blocks (and many other data structures). The shared_ptr gets + * us transparent reference counting, which greatly simplifies storage + * management issues. This is especially helpful in our hybrid + * C++ / Python system. + * + * See http://www.boost.org/libs/smart_ptr/smart_ptr.htm + * + * As a convention, the _sptr suffix indicates a boost::shared_ptr + */ +typedef boost::shared_ptr<howto_square_ff> howto_square_ff_sptr; + +/*! + * \brief Return a shared_ptr to a new instance of howto_square_ff. + * + * To avoid accidental use of raw pointers, howto_square_ff's + * constructor is private. howto_make_square_ff is the public + * interface for creating new instances. + */ +howto_square_ff_sptr howto_make_square_ff (); + +/*! + * \brief square a stream of floats. + * \ingroup block + * + * \sa howto_square2_ff for a version that subclasses gr_sync_block. + */ +class howto_square_ff : public gr_block +{ +private: + // The friend declaration allows howto_make_square_ff to + // access the private constructor. + + friend howto_square_ff_sptr howto_make_square_ff (); + + howto_square_ff (); // private constructor + + public: + ~howto_square_ff (); // public destructor + + // Where all the action really happens + + int general_work (int noutput_items, + gr_vector_int &ninput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); +}; + +#endif /* INCLUDED_HOWTO_SQUARE_FF_H */ |