1 files changed, 53 insertions, 0 deletions
diff --git a/gr-blocks/lib/stream_demux_impl.h b/gr-blocks/lib/stream_demux_impl.h
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+++ b/gr-blocks/lib/stream_demux_impl.h
@@ -0,0 +1,53 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2020 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_BLOCKS_STREAM_DEMUX_IMPL_H
+#define INCLUDED_BLOCKS_STREAM_DEMUX_IMPL_H
+
+#include <gnuradio/blocks/stream_demux.h>
+
+namespace gr {
+namespace blocks {
+
+class BLOCKS_API stream_demux_impl : public stream_demux
+{
+private:
+    const size_t d_itemsize;
+    unsigned int d_stream{ 0 };    // index of currently selected stream
+    int d_residual{ 0 };           // number of items left to put into current stream
+    const gr_vector_int d_lengths; // number of items to pack per stream
+
+public:
+    stream_demux_impl(size_t itemsize, const std::vector<int>& lengths);
+
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+
+    int general_work(int noutput_items,
+                     gr_vector_int& ninput_items,
+                     gr_vector_const_void_star& input_items,
+                     gr_vector_void_star& output_items);
+};
+
+} // namespace blocks
+} // namespace gr
+
+#endif /* INCLUDED_BLOCKS_STREAM_DEMUX_IMPL_H */