1 files changed, 75 insertions, 0 deletions
diff --git a/gr-audio/lib/windows/windows_sink.h b/gr-audio/lib/windows/windows_sink.h
new file mode 100644
index 0000000000..2a33af3532
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+++ b/gr-audio/lib/windows/windows_sink.h
@@ -0,0 +1,75 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004-2011,2013 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_AUDIO_WINDOWS_SINK_H
+#define INCLUDED_AUDIO_WINDOWS_SINK_H
+
+#define WIN32_LEAN_AND_MEAN
+#define NOMINMAX		// stops windef.h defining max/min under cygwin
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <audio/sink.h>
+#include <string>
+
+namespace gr {
+  namespace audio {
+
+    /*!
+     * \brief audio sink using winmm mmsystem (win32 only)
+     * \ingroup audio_blk
+     *
+     * input signature is one or two streams of floats.
+     * Input samples must be in the range [-1,1].
+     */
+    class windows_sink : public audio_sink
+    {
+      int         d_sampling_freq;
+      std::string d_device_name;
+      int         d_fd;
+      short      *d_buffer;
+      int         d_chunk_size;
+      HWAVEOUT    d_h_waveout;
+      HGLOBAL     d_h_wave_hdr;
+      LPWAVEHDR   d_lp_wave_hdr;
+      HANDLE      d_wave_write_event;
+
+    protected:
+      int string_to_int(const std::string & s);
+      int open_waveout_device(void);
+      int write_waveout(HPSTR lp_data, DWORD dw_data_size);
+
+    public:
+      windows_sink(int sampling_freq,
+                   const std::string device_name = "");
+      ~windows_sink();
+
+      int work(int noutput_items,
+               gr_vector_const_void_star & input_items,
+               gr_vector_void_star & output_items);
+    };
+
+  } /* namespace audio */
+} /* namespace gr */
+
+#endif /* INCLUDED_AUDIO_WINDOWS_SINK_H */