1 files changed, 57 insertions, 0 deletions
diff --git a/include/gnuradio/gr_sync_block.h b/include/gnuradio/gr_sync_block.h
index e69de29..335840e 100644
--- a/include/gnuradio/gr_sync_block.h
+++ b/include/gnuradio/gr_sync_block.h
@@ -0,0 +1,57 @@
+//
+// Copyright 2012 Josh Blum
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with io_sig program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef INCLUDED_GNURADIO_GR_SYNC_BLOCK_H
+#define INCLUDED_GNURADIO_GR_SYNC_BLOCK_H
+
+#include <gnuradio/runtime_api.h>
+#include <gr_block.h>
+
+struct GR_RUNTIME_API gr_sync_block : gr_block
+{
+
+    gr_sync_block(void);
+
+    gr_sync_block(
+        const std::string &name,
+        gr_io_signature_sptr input_signature,
+        gr_io_signature_sptr output_signature
+    );
+
+    //! implements work -> calls work
+    int general_work (int noutput_items,
+                gr_vector_int &ninput_items,
+                gr_vector_const_void_star &input_items,
+                gr_vector_void_star &output_items);
+    void forecast (int noutput_items, gr_vector_int &ninput_items_required);
+
+    void set_alignment(const size_t alignment);
+    bool is_unaligned(void);
+
+   /*!
+    * \brief just like gr_block::general_work, only this arranges to call consume_each for you
+    *
+    * The user must override work to define the signal processing code
+    */
+    virtual int work(
+        int noutput_items,
+        gr_vector_const_void_star &input_items,
+        gr_vector_void_star &output_items
+    ) = 0;
+
+};
+
+#endif /*INCLUDED_GNURADIO_GR_SYNC_BLOCK_H*/