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/* -*- c++ -*- */
/*
* Copyright 2004 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 2, 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 <gr_sync_block.h>
#include <string>
class audio_windows_sink;
typedef boost::shared_ptr <audio_windows_sink> audio_windows_sink_sptr;
audio_windows_sink_sptr
audio_windows_make_sink (int sampling_freq, const std::string dev = "");
/*!
* \brief audio sink using winmm mmsystem (win32 only)
*
* input signature is one or two streams of floats.
* Input samples must be in the range [-1,1].
*/
class audio_windows_sink : public gr_sync_block
{
friend
audio_windows_sink_sptr
audio_windows_make_sink (int sampling_freq, const std::string device_name);
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);
audio_windows_sink (int sampling_freq, const std::string device_name = "");
int
open_waveout_device (void);
int
write_waveout (HPSTR lp_data, DWORD dw_data_size);
public:
~audio_windows_sink ();
int
work (int noutput_items,
gr_vector_const_void_star & input_items,
gr_vector_void_star & output_items);
};
#endif /* INCLUDED_AUDIO_WINDOWS_SINK_H */
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