work on simplifying buffer queue logic

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/gras_impl/buffer_queue.hpp b/lib/gras_impl/buffer_queue.hpp
new file mode 100644
index 0000000..e9ac220
--- /dev/null
+++ b/lib/gras_impl/buffer_queue.hpp
@@ -0,0 +1,64 @@
+//
+// 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_LIBGRAS_IMPL_BUFFER_QUEUE_HPP
+#define INCLUDED_LIBGRAS_IMPL_BUFFER_QUEUE_HPP
+
+#include <tsbe/buffer.hpp>
+#include <boost/bind.hpp>
+#include <queue>
+
+namespace gnuradio
+{
+
+struct BufferQueue : std::queue<tsbe::Buffer>
+{
+    BufferQueue(void)
+    {
+        tsbe::BufferDeleter deleter = boost::bind(&BufferQueue::push, this, _1);
+        _token = tsbe::BufferToken(new tsbe::BufferDeleter(deleter));
+    }
+
+    ~BufferQueue(void)
+    {
+        _token.reset();
+        this->flush();
+    }
+
+    void flush(void)
+    {
+        while (not this->empty())
+        {
+            this->pop();
+        }
+    }
+
+    void allocate_one(const size_t num_bytes)
+    {
+        tsbe::BufferConfig config;
+        config.memory = NULL;
+        config.length = num_bytes;
+        config.token = _token;
+        tsbe::Buffer buff(config);
+        //buffer derefs here and the token messages it back to the queue
+    }
+
+    tsbe::BufferToken _token;
+};
+
+} //namespace gnuradio
+
+#endif /*INCLUDED_LIBGRAS_IMPL_BUFFER_QUEUE_HPP*/