1 files changed, 139 insertions, 0 deletions
diff --git a/lib/osmosdr/osmosdr_src_c.h b/lib/osmosdr/osmosdr_src_c.h
new file mode 100644
index 0000000..0f62b09
--- /dev/null
+++ b/lib/osmosdr/osmosdr_src_c.h
@@ -0,0 +1,139 @@
+/* -*- 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 <gnuradio/sync_block.h>
+
+#include <gnuradio/thread/thread.h>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/condition_variable.hpp>
+
+#include "source_iface.h"
+
+class osmosdr_src_c;
+typedef struct osmosdr_dev osmosdr_dev_t;
+
+/*
+ * 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_src_c_sptr osmosdr_make_src_c (const std::string & args = "");
+
+/*!
+ * \brief Provides a stream of complex samples.
+ * \ingroup block
+ *
+ * \sa sink for a version that subclasses gr::hier_block2.
+ */
+class osmosdr_src_c :
+    public gr::sync_block,
+    public source_iface
+{
+private:
+  // The friend declaration allows osmosdr_make_src_c to
+  // access the private constructor.
+
+  friend 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
+
+  int work( int noutput_items,
+            gr_vector_const_void_star &input_items,
+            gr_vector_void_star &output_items );
+
+  static std::vector< std::string > get_devices();
+
+  size_t get_num_channels( void );
+
+  osmosdr::meta_range_t get_sample_rates( void );
+  double set_sample_rate( double rate );
+  double get_sample_rate( void );
+
+  osmosdr::freq_range_t get_freq_range( size_t chan = 0 );
+  double set_center_freq( double freq, size_t chan = 0 );
+  double get_center_freq( size_t chan = 0 );
+  double set_freq_corr( double ppm, size_t chan = 0 );
+  double get_freq_corr( size_t chan = 0 );
+
+  std::vector<std::string> get_gain_names( size_t chan = 0 );
+  osmosdr::gain_range_t get_gain_range( size_t chan = 0 );
+  osmosdr::gain_range_t get_gain_range( const std::string & name, size_t chan = 0 );
+  bool set_gain_mode( bool automatic, size_t chan = 0 );
+  bool get_gain_mode( size_t chan = 0 );
+  double set_gain( double gain, size_t chan = 0 );
+  double set_gain( double gain, const std::string & name, size_t chan = 0 );
+  double get_gain( size_t chan = 0 );
+  double get_gain( const std::string & name, size_t chan = 0 );
+
+  double set_if_gain( double gain, size_t chan = 0 );
+
+  std::vector< std::string > get_antennas( size_t chan = 0 );
+  std::string set_antenna( const std::string & antenna, size_t chan = 0 );
+  std::string get_antenna( size_t chan = 0 );
+
+private:
+  static void _osmosdr_callback(unsigned char *buf, uint32_t len, void *ctx);
+  void osmosdr_callback(unsigned char *buf, uint32_t len);
+  static void _osmosdr_wait(osmosdr_src_c *obj);
+  void osmosdr_wait();
+
+  osmosdr_dev_t *_dev;
+  gr::thread::thread _thread;
+  unsigned short **_buf;
+  unsigned int _buf_num;
+  unsigned int _buf_len;
+  unsigned int _buf_head;
+  unsigned int _buf_used;
+  boost::mutex _buf_mutex;
+  boost::condition_variable _buf_cond;
+  bool _running;
+
+  unsigned int _buf_offset;
+  int _samp_avail;
+
+  bool _auto_gain;
+  double _if_gain;
+  unsigned int _skipped;
+};
+
+#endif /* INCLUDED_OSMOSDR_SRC_C_H */