diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
|---|---|---|
| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
| commit | 5d69a524f81f234b3fbc41d49ba18d6f6886baba (patch) | |
| tree | b71312bf7f1e8d10fef0f3ac6f28784065e73e72 /gr-atsc/src/lib/atsci_trellis_encoder.h | |
Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gr-atsc/src/lib/atsci_trellis_encoder.h')
| -rw-r--r-- | gr-atsc/src/lib/atsci_trellis_encoder.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/gr-atsc/src/lib/atsci_trellis_encoder.h b/gr-atsc/src/lib/atsci_trellis_encoder.h new file mode 100644 index 000000000..429d3d105 --- /dev/null +++ b/gr-atsc/src/lib/atsci_trellis_encoder.h @@ -0,0 +1,66 @@ +/* -*- 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 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 _ATSC_TRELLIS_ENCODER_H_ +#define _ATSC_TRELLIS_ENCODER_H_ + +#include <atsci_basic_trellis_encoder.h> +#include <atsc_types.h> + +/*! + * \brief fancy, schmancy 12-way interleaved trellis encoder for ATSC + */ + +class atsci_trellis_encoder { + public: + static const int NCODERS = 12; + + atsci_trellis_encoder (); + ~atsci_trellis_encoder (); + + //! reset all encoder states + void reset (); + + /*! + * Take 12 RS encoded, convolutionally interleaved segments and + * produce 12 trellis coded data segments. We work in groups of 12 + * because that's the smallest number of segments that composes a + * single full cycle of the encoder mux. + */ + void encode (atsc_data_segment out[NCODERS], + const atsc_mpeg_packet_rs_encoded in[NCODERS]); + + + protected: + static const int SEGMENT_SIZE = ATSC_MPEG_RS_ENCODED_LENGTH; // 207 + static const int INPUT_SIZE = (SEGMENT_SIZE * 12); + static const int OUTPUT_SIZE = (ATSC_DATA_SEGMENT_LENGTH * 12); + + void encode_helper (unsigned char out[OUTPUT_SIZE], + const unsigned char in[INPUT_SIZE]); + + atsci_basic_trellis_encoder enc[NCODERS]; + bool debug; +}; + + +#endif /* _ATSC_TRELLIS_ENCODER_H_ */ |