GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2004-2011 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 00023 #ifndef INCLUDED_AUDIO_WINDOWS_SINK_H 00024 #define INCLUDED_AUDIO_WINDOWS_SINK_H 00025 00026 #define WIN32_LEAN_AND_MEAN 00027 #define NOMINMAX // stops windef.h defining max/min under cygwin 00028 00029 #include <windows.h> 00030 #include <mmsystem.h> 00031 00032 #include <gr_audio_sink.h> 00033 #include <string> 00034 00035 /*! 00036 * \brief audio sink using winmm mmsystem (win32 only) 00037 * \ingroup audio_blk 00038 * 00039 * input signature is one or two streams of floats. 00040 * Input samples must be in the range [-1,1]. 00041 */ 00042 00043 class audio_windows_sink : public audio_sink 00044 { 00045 int d_sampling_freq; 00046 std::string d_device_name; 00047 int d_fd; 00048 short *d_buffer; 00049 int d_chunk_size; 00050 HWAVEOUT d_h_waveout; 00051 HGLOBAL d_h_wave_hdr; 00052 LPWAVEHDR d_lp_wave_hdr; 00053 HANDLE d_wave_write_event; 00054 00055 protected: 00056 int 00057 string_to_int (const std::string & s); 00058 int 00059 open_waveout_device (void); 00060 int 00061 write_waveout (HPSTR lp_data, DWORD dw_data_size); 00062 00063 public: 00064 audio_windows_sink (int sampling_freq, const std::string device_name = ""); 00065 ~audio_windows_sink (); 00066 00067 int 00068 work (int noutput_items, 00069 gr_vector_const_void_star & input_items, 00070 gr_vector_void_star & output_items); 00071 }; 00072 00073 #endif /* INCLUDED_AUDIO_WINDOWS_SINK_H */