GNU Radio 3.5.1 C++ API
audio_windows_source.h
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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_SOURCE_H
00024 #define INCLUDED_AUDIO_WINDOWS_SOURCE_H
00025 
00026 #include <gr_audio_source.h>
00027 #include <string>
00028 
00029 /*!
00030  * \brief audio source using winmm mmsystem (win32 only)
00031  * \ingroup audio_blk
00032  *
00033  * Output signature is one or two streams of floats.
00034  * Output samples will be in the range [-1,1].
00035  */
00036 
00037 class audio_windows_source : public audio_source
00038 {
00039 
00040   int           d_sampling_freq;
00041   std::string   d_device_name;
00042   int           d_fd;
00043   short        *d_buffer;
00044   int           d_chunk_size;
00045 
00046 public:
00047   audio_windows_source (int sampling_freq, const std::string device_name = "");
00048 
00049   ~audio_windows_source ();
00050 
00051   int
00052   work (int noutput_items,
00053         gr_vector_const_void_star & input_items,
00054         gr_vector_void_star & output_items);
00055 };
00056 
00057 #endif /* INCLUDED_AUDIO_WINDOWS_SOURCE_H */