diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
| commit | 3d38e82e7d87dfc01132b199e33b53add8a706fa (patch) | |
| tree | af4545bcf3cea24dc30571601116a3a89381ad5d /gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h | |
| parent | 39ff6d4814c858f2dbaf3c8007940872c46d6c95 (diff) | |
atsc: adjustments to atsc to start to conform to v3.7 structure.
Not going to comply completely with the new structure; just wanted to get it so that it looked more consistent once installed.
Diffstat (limited to 'gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h')
| -rw-r--r-- | gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h b/gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h new file mode 100644 index 0000000000..779f311f4f --- /dev/null +++ b/gr-atsc/include/atsc/GrAtscSegSymSyncImpl.h @@ -0,0 +1,69 @@ +/* -*- c++ -*- */ +/* + * Copyright 2002 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 _GRATSCSEGSYMSYNCIMPL_H_ +#define _GRATSCSEGSYMSYNCIMPL_H_ + +#include <GrAtscSegSymSync.h> +#include <atsc/sssr_impl.h> + + +/*! + * \brief concrete implementation of GrAtscSegSymSync + * + * This class implements data segment sync tracking and symbol timing + * using a variation of the method described in + * "ATSC/VSB Tutorial - Receiver Technology" by Wayne E. Bretl of + * Zenith, pgs 41-45. + */ + +class GrAtscSegSymSyncImpl : public GrAtscSegSymSync { + + atsci_sssr d_sssr; + atsci_interpolator d_interp; + VrSampleIndex d_next_input; + double d_rx_clock_to_symbol_freq; // nominal ratio + +public: + + // the standard methods... + + GrAtscSegSymSyncImpl (double nominal_ratio_of_rx_clock_to_symbol_freq); + virtual ~GrAtscSegSymSyncImpl (); + + virtual const char *name () { return "GrAtscSegSymSyncImpl"; } + + virtual int forecast (VrSampleRange output, + VrSampleRange inputs[]); + + virtual int work (VrSampleRange output, void *o[], + VrSampleRange inputs[], void *i[]); + + void pre_initialize (); + + + // reset on channel change + + virtual void reset (); + +}; + +#endif /* _GRATSCSEGSYMSYNCIMPL_H_ */ |