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-rw-r--r--gr-atsc/src/lib/GrAtscViterbiDecoder.cc135
1 files changed, 0 insertions, 135 deletions
diff --git a/gr-atsc/src/lib/GrAtscViterbiDecoder.cc b/gr-atsc/src/lib/GrAtscViterbiDecoder.cc
deleted file mode 100644
index c89b3556b..000000000
--- a/gr-atsc/src/lib/GrAtscViterbiDecoder.cc
+++ /dev/null
@@ -1,135 +0,0 @@
-/* -*- 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.
- */
-
-#include <GrAtscViterbiDecoder.h>
-#include <iostream>
-
-// typedefs for fundamental i/o types
-
-typedef atsc_soft_data_segment iType;
-typedef atsc_mpeg_packet_rs_encoded oType;
-
-static const int NUMBER_OF_OUTPUTS = 1; // # of output streams (almost always one)
-
-
-GrAtscViterbiDecoder::GrAtscViterbiDecoder ()
- : VrHistoryProc<iType,oType> (NUMBER_OF_OUTPUTS), last_start(-1)
-{
- // 1 + number of extra input elements at which we look. This is
- // used by the superclass's forecast routine to get us the correct
- // range on our inputs.
- //
- // We need our input to be aligned on a 12-segment boundary,
- // to ensure satisfaction, ask for 11 more
- history = 1 + (atsci_viterbi_decoder::NCODERS - 1);
-
- // any other init here.
-
- // Let the bottom end know we must produce output in multiples of 12 segments.
- setOutputSize (atsci_viterbi_decoder::NCODERS);
-}
-
-GrAtscViterbiDecoder::~GrAtscViterbiDecoder ()
-{
- // Anything that isn't automatically cleaned up...
-}
-
-/*
- * This is the real work horse. In general this interface can handle
- * multiple streams of input and output, but we almost always
- * use a single input and output stream.
- */
-
-int
-GrAtscViterbiDecoder::work (VrSampleRange output, void *ao[],
- VrSampleRange inputs[], void *ai[])
-{
- // If we have state that persists across invocations (e.g., we have
- // instance variables that we modify), we must use the sync method
- // to indicate to the scheduler that our output must be computed in
- // order. This doesn't keep other things from being run in
- // parallel, it just means that at any given time, there is only a
- // single thread working this code, and that the scheduler will
- // ensure that we are asked to produce output that is contiguous and
- // that will be presented to us in order of increasing time.
-
- // We have state, the current state of the decoder, hence
- // we must use sync.
-
- sync (output.index);
-
- // construct some nicer i/o pointers to work with.
-
- iType *in = ((iType **) ai)[0];
- oType *out = ((oType **) ao)[0];
-
-
- assert (output.size % atsci_viterbi_decoder::NCODERS == 0);
-
- // find the first mod 12 boundary to begin decoding
- int start;
- for (start = 0; start < atsci_viterbi_decoder::NCODERS; start++){
- assert (in[start].pli.regular_seg_p ());
- if ((in[start].pli.segno () % atsci_viterbi_decoder::NCODERS) == 0)
- break;
- }
-
- if (start == atsci_viterbi_decoder::NCODERS){
- // we didn't find a mod 12 boundary. There's some kind of problem
- // upstream of us (not yet sync'd??)
- cerr << "!!!GrAtscViterbiDecoder: no mod-12 boundary found\7\n";
- start = 0;
- }
- else if (start != last_start){
- cerr << "GrAtscViterbiDecoder: new starting offset = " << start
- << " output.index = " << output.index << endl;
- last_start = start;
- }
-
- // We must produce output.size units of output.
-
- for (unsigned int i = 0; i < output.size; i += atsci_viterbi_decoder::NCODERS){
- // primitive does 12 segments at a time.
- // pipeline info is handled in the primitive.
- decoder.decode (&out[i], &in[i + start]);
- }
-
-#if 0
- // FIXME paranoid check...
- for (unsigned int i = 0; i < output.size; i++){
- plinfo::sanity_check (out[i].pli);
- assert (out[i].pli.regular_seg_p ());
- }
-#endif
-
-#if 0
- cerr << "@@@ GrAtscViterbiDecoder: output.index = " << output.index
- << " output.size = " << output.size
- << " sum = " << output.index + output.size << endl;
-#endif
-
- // Return the number of units we produced.
- // Note that for all intents and purposes, it is an error to
- // produce less than you are asked for.
-
- return output.size;
-}