osmosdr: add initial component files

7 files changed, 533 insertions, 0 deletions

diff --git a/lib/osmosdr/CMakeLists.txt b/lib/osmosdr/CMakeLists.txt
new file mode 100644
index 0000000..50275a1
--- /dev/null
+++ b/lib/osmosdr/CMakeLists.txt
@@ -0,0 +1,37 @@
+# Copyright 2012 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.
+
+########################################################################
+# This file included, use CMake directory variables
+########################################################################
+
+include_directories(APPEND ${CMAKE_CURRENT_SOURCE_DIR})
+
+set(osmosdr_srcs
+    ${CMAKE_CURRENT_SOURCE_DIR}/osmosdr_control.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/osmosdr_snk_c.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/osmosdr_src_c.cc
+)
+
+########################################################################
+# Append gnuradio-osmosdr library sources
+########################################################################
+list(APPEND gr_osmosdr_srcs ${osmosdr_srcs})
+list(APPEND gr_osmosdr_libs ${GNURADIO_AUDIO_LIBRARIES})
+
diff --git a/lib/osmosdr/osmosdr_control.cc b/lib/osmosdr/osmosdr_control.cc
new file mode 100644
index 0000000..75f5398
--- /dev/null
+++ b/lib/osmosdr/osmosdr_control.cc
@@ -0,0 +1,105 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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 <fstream>
+#include <string>
+#include <sstream>
+
+#include <boost/assign.hpp>
+
+#include "osmosdr_control.h"
+
+using namespace boost::assign;
+
+osmosdr_control::osmosdr_control(const std::string &args)
+{
+    /* lookup acm control channel device name for a given alsa device name */
+
+    /*
+        if (args.empty())
+            pick first available device or throw an exception();
+    */
+}
+
+osmosdr_control::~osmosdr_control()
+{
+}
+
+/*
+  1 [OsmoSDR        ]: USB-Audio - OsmoSDR
+                       sysmocom OsmoSDR at usb-0000:00:06.1-2, high speed
+*/
+std::vector< std::string > osmosdr_control::find_devices()
+{
+    std::vector< std::string > devices;
+
+    std::string line;
+    std::ifstream cards( "/proc/asound/cards" );
+    if ( cards.is_open() )
+    {
+        while ( cards.good() )
+        {
+            getline (cards, line);
+
+            if ( line.find( "USB-Audio - OsmoSDR" ) != std::string::npos )
+            {
+                int id;
+                std::istringstream( line ) >> id;
+
+                std::ostringstream hw_id;
+                hw_id << "hw:" << id; // build alsa identifier
+
+                devices += hw_id.str();
+            }
+        }
+
+        cards.close();
+    }
+
+    return devices;
+}
+
+std::string osmosdr_control::audio_dev_name()
+{
+    return "hw:1";
+}
+
+std::string osmosdr_control::control_dev_name()
+{
+    return "/dev/ttyUSB0";
+}
+
+osmosdr_rx_control::osmosdr_rx_control(const std::string &args) :
+    osmosdr_control(args)
+{
+}
+
+osmosdr_rx_control::~osmosdr_rx_control()
+{
+}
+
+osmosdr_tx_control::osmosdr_tx_control(const std::string &args) :
+    osmosdr_control(args)
+{
+}
+
+osmosdr_tx_control::~osmosdr_tx_control()
+{
+}
diff --git a/lib/osmosdr/osmosdr_control.h b/lib/osmosdr/osmosdr_control.h
new file mode 100644
index 0000000..ea9b298
--- /dev/null
+++ b/lib/osmosdr/osmosdr_control.h
@@ -0,0 +1,67 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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 OSMOSDR_CONTROL_H
+#define OSMOSDR_CONTROL_H
+
+#include <string>
+#include <complex>
+#include <osmosdr_ranges.h>
+
+/*!
+ * session object to cdc-acm based control channel of the device
+ */
+class osmosdr_control
+{
+public:
+    osmosdr_control(const std::string &args);
+    virtual ~osmosdr_control();
+
+    /*!
+     * Discovers all devices connected to the host computer.
+     * \return a vector of device addresses
+     */
+    static std::vector< std::string > find_devices();
+
+protected:
+    std::string audio_dev_name();
+    std::string control_dev_name();
+};
+
+/*!
+ * osmosdr_source class derives from this class to be able to control the device
+ */
+class osmosdr_rx_control : public osmosdr_control
+{
+public:
+    osmosdr_rx_control(const std::string &args);
+    virtual ~osmosdr_rx_control();
+};
+
+/*!
+ * osmosdr_sink class derives from this class to be able to control the device
+ */
+class osmosdr_tx_control : public osmosdr_control
+{
+public:
+    osmosdr_tx_control(const std::string &args);
+    virtual ~osmosdr_tx_control();
+};
+
+#endif // OSMOSDR_CONTROL_H
diff --git a/lib/osmosdr/osmosdr_snk_c.cc b/lib/osmosdr/osmosdr_snk_c.cc
new file mode 100644
index 0000000..0a61bc1
--- /dev/null
+++ b/lib/osmosdr/osmosdr_snk_c.cc
@@ -0,0 +1,88 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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 <osmosdr_snk_c.h>
+#include <gr_io_signature.h>
+#include <gr_audio_sink.h>
+#include <gr_complex_to_xxx.h>
+
+/*
+ * Create a new instance of osmosdr_snk_c and return
+ * a boost shared_ptr.  This is effectively the public constructor.
+ */
+osmosdr_snk_c_sptr
+osmosdr_make_snk_c (const std::string &args)
+{
+  return gnuradio::get_initial_sptr(new osmosdr_snk_c (args));
+}
+
+/*
+ * 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 = 0;	// minimum number of output streams
+static const int MAX_OUT = 0;	// maximum number of output streams
+
+/*
+ * The private constructor
+ */
+osmosdr_snk_c::osmosdr_snk_c (const std::string & args)
+  : gr_hier_block2 ("osmosdr_snk_c",
+        gr_make_io_signature (MIN_IN, MAX_IN, sizeof (gr_complex)),
+        gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
+    osmosdr_tx_control(args)
+{
+    throw std::runtime_error("FIXME: OsmoSDR sink is not yet implemented");
+
+    /* Audio sink; sample rate is 96kHz by default */
+    audio_sink::sptr snk = audio_make_sink(96000, audio_dev_name(), true);
+
+    gr_complex_to_real_sptr real_part = gr_make_complex_to_real(1);
+    gr_complex_to_imag_sptr imag_part = gr_make_complex_to_imag(1);
+
+    connect(self(), 0, real_part, 0);
+    connect(self(), 0, imag_part, 0);
+    connect(imag_part, 0, snk, 0); /* Left is I */
+    connect(real_part, 0, snk, 1); /* Right is Q */
+}
+
+/*
+ * Our virtual destructor.
+ */
+osmosdr_snk_c::~osmosdr_snk_c ()
+{
+  // nothing else required in this example
+}
diff --git a/lib/osmosdr/osmosdr_snk_c.h b/lib/osmosdr/osmosdr_snk_c.h
new file mode 100644
index 0000000..d85562f
--- /dev/null
+++ b/lib/osmosdr/osmosdr_snk_c.h
@@ -0,0 +1,76 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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_OSMOSDR_SNK_C_H
+#define INCLUDED_OSMOSDR_SNK_C_H
+
+#include <osmosdr_api.h>
+#include <osmosdr_control.h>
+#include <gr_hier_block2.h>
+
+class osmosdr_snk_c;
+
+/*
+ * 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<osmosdr_snk_c> osmosdr_snk_c_sptr;
+
+/*!
+ * \brief Return a shared_ptr to a new instance of osmosdr_snk_c.
+ *
+ * To avoid accidental use of raw pointers, osmosdr_snk_c's
+ * constructor is private.  osmosdr_make_snk_c is the public
+ * interface for creating new instances.
+ */
+OSMOSDR_API osmosdr_snk_c_sptr osmosdr_make_snk_c (const std::string & args = "");
+
+/*!
+ * \brief Takes a stream of complex samples.
+ * \ingroup block
+ *
+ * This uses the preferred technique: subclassing gr_hier_block2.
+ */
+class OSMOSDR_API osmosdr_snk_c : public gr_hier_block2,
+                                   public osmosdr_tx_control
+{
+private:
+  // The friend declaration allows osmosdr_make_snk_c to
+  // access the private constructor.
+
+  friend OSMOSDR_API osmosdr_snk_c_sptr osmosdr_make_snk_c (const std::string & args);
+
+  /*!
+   * \brief Takes a stream of complex samples.
+   */
+  osmosdr_snk_c (const std::string & args);  	// private constructor
+
+ public:
+  ~osmosdr_snk_c ();	// public destructor
+
+};
+
+#endif /* INCLUDED_OSMOSDR_SNK_C_H */
diff --git a/lib/osmosdr/osmosdr_src_c.cc b/lib/osmosdr/osmosdr_src_c.cc
new file mode 100644
index 0000000..b239237
--- /dev/null
+++ b/lib/osmosdr/osmosdr_src_c.cc
@@ -0,0 +1,84 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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 "osmosdr_src_c.h"
+#include <gr_io_signature.h>
+#include <gr_audio_source.h>
+#include <gr_float_to_complex.h>
+
+/*
+ * Create a new instance of osmosdr_src_c and return
+ * a boost shared_ptr.  This is effectively the public constructor.
+ */
+osmosdr_src_c_sptr
+osmosdr_make_src_c (const std::string &args)
+{
+  return gnuradio::get_initial_sptr(new osmosdr_src_c (args));
+}
+
+/*
+ * 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 = 0;	// mininum number of input streams
+static const int MAX_IN = 0;	// 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
+ */
+osmosdr_src_c::osmosdr_src_c (const std::string &args)
+  : gr_hier_block2 ("osmosdr_src_c",
+        gr_make_io_signature (MIN_IN, MAX_IN, sizeof (gr_complex)),
+        gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
+    osmosdr_rx_control(args)
+{
+    /* Audio source; sample rate is 500kHz by default */
+    audio_source::sptr src = audio_make_source(500000, audio_dev_name(), true);
+
+    /* block to convert stereo audio to a complex stream */
+    gr_float_to_complex_sptr f2c = gr_make_float_to_complex(1);
+
+    connect(src, 0, f2c, 0); /* Left is I */
+    connect(src, 1, f2c, 1); /* Right is Q */
+    connect(f2c, 0, self(), 0);
+}
+
+/*
+ * Our virtual destructor.
+ */
+osmosdr_src_c::~osmosdr_src_c ()
+{
+  // nothing else required in this example
+}
diff --git a/lib/osmosdr/osmosdr_src_c.h b/lib/osmosdr/osmosdr_src_c.h
new file mode 100644
index 0000000..5b639b2
--- /dev/null
+++ b/lib/osmosdr/osmosdr_src_c.h
@@ -0,0 +1,76 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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_OSMOSDR_SRC_C_H
+#define INCLUDED_OSMOSDR_SRC_C_H
+
+#include <osmosdr_api.h>
+#include <osmosdr_control.h>
+#include <gr_hier_block2.h>
+
+class osmosdr_src_c;
+
+/*
+ * 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<osmosdr_src_c> osmosdr_src_c_sptr;
+
+/*!
+ * \brief Return a shared_ptr to a new instance of osmosdr_src_c.
+ *
+ * To avoid accidental use of raw pointers, osmosdr_src_c's
+ * constructor is private.  osmosdr_make_src_c is the public
+ * interface for creating new instances.
+ */
+OSMOSDR_API osmosdr_src_c_sptr osmosdr_make_src_c (const std::string & args = "");
+
+/*!
+ * \brief Provides a stream of complex samples.
+ * \ingroup block
+ *
+ * \sa osmosdr_sink_c for a version that subclasses gr_hier_block2.
+ */
+class OSMOSDR_API osmosdr_src_c : public gr_hier_block2,
+                                     public osmosdr_rx_control
+{
+private:
+  // The friend declaration allows osmosdr_make_src_c to
+  // access the private constructor.
+
+  friend OSMOSDR_API osmosdr_src_c_sptr osmosdr_make_src_c (const std::string & args);
+
+  /*!
+   * \brief Provides a stream of complex samples.
+   */
+  osmosdr_src_c (const std::string & args);  	// private constructor
+
+ public:
+  ~osmosdr_src_c ();	// public destructor
+
+};
+
+#endif /* INCLUDED_OSMOSDR_SRC_C_H */