diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-03-09 09:35:07 -0500 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-03-09 09:35:07 -0500 |
| commit | 21c95a82a495f0cf9dfe511f9ef370bae9ac0eeb (patch) | |
| tree | ae8b5808eb5b03495c3758baf5bb4ab679c68a7a /gr-blocks/lib/wavfile_source_impl.h | |
| parent | 4389b769891283face9aa397bd4d736f478e97e4 (diff) | |
blocks: moved tagged_file_sink and wavfile source/sink/base to gr-blocks.
Diffstat (limited to 'gr-blocks/lib/wavfile_source_impl.h')
| -rw-r--r-- | gr-blocks/lib/wavfile_source_impl.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gr-blocks/lib/wavfile_source_impl.h b/gr-blocks/lib/wavfile_source_impl.h new file mode 100644 index 0000000000..4875731a08 --- /dev/null +++ b/gr-blocks/lib/wavfile_source_impl.h @@ -0,0 +1,70 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004,2008,2013 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_GR_WAVFILE_SOURCE_IMPL_H +#define INCLUDED_GR_WAVFILE_SOURCE_IMPL_H + +#include <blocks/wavfile_source.h> +#include <cstdio> // for FILE + +namespace gr { + namespace blocks { + + class wavfile_source_impl : public wavfile_source + { + private: + FILE *d_fp; + bool d_repeat; + + unsigned d_sample_rate; + int d_nchans; + int d_bytes_per_sample; + int d_first_sample_pos; + unsigned d_samples_per_chan; + unsigned d_sample_idx; + int d_normalize_shift; + int d_normalize_fac; + + /*! + * \brief Convert an integer sample value to a float value within [-1;1] + */ + float convert_to_float(short int sample); + + public: + wavfile_source_impl(const char *filename, bool repeat); + ~wavfile_source_impl(); + + unsigned int sample_rate() const { return d_sample_rate; }; + + int bits_per_sample() const { return d_bytes_per_sample * 8; }; + + int channels() const { return d_nchans; }; + + int work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); + }; + + } /* namespace blocks */ +} /* namespace gr */ + +#endif /* INCLUDED_GR_WAVFILE_SOURCE_IMPL_H */ |