X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=gr-atsc%2Fsrc%2Flib%2FGrAtscRSEncoder.cc;fp=gr-atsc%2Fsrc%2Flib%2FGrAtscRSEncoder.cc;h=2954779a1223cc0f0ea735de8c6809fe3438afde;hb=35e43e8d8c271e6842191cac3fc3f2f88a861183;hp=0000000000000000000000000000000000000000;hpb=ea29b08aeb54227e6628f655ccfdb96fe4d8c378;p=debian%2Fgnuradio

diff --git a/gr-atsc/src/lib/GrAtscRSEncoder.cc b/gr-atsc/src/lib/GrAtscRSEncoder.cc
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+++ b/gr-atsc/src/lib/GrAtscRSEncoder.cc
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+/* -*- 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 <GrAtscRSEncoder.h>
+
+// typedefs for fundamental i/o types
+
+typedef atsc_mpeg_packet_no_sync	iType;
+typedef atsc_mpeg_packet_rs_encoded	oType;
+
+static const int NUMBER_OF_OUTPUTS = 1;	// # of output streams (almost always one)
+
+
+GrAtscRSEncoder::GrAtscRSEncoder ()
+  : VrHistoryProc<iType,oType> (NUMBER_OF_OUTPUTS)
+{
+  // 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're one-to-one input-to-output so set it to 1.
+  history = 1;	
+
+  // any other init here.
+}
+
+GrAtscRSEncoder::~GrAtscRSEncoder ()
+{
+  // 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 
+GrAtscRSEncoder::work (VrSampleRange output, void *ao[],
+			VrSampleRange inputs[], void *ai[])
+{
+  // construct some nicer i/o pointers to work with.
+
+  iType *in  = ((iType **) ai)[0];
+  oType *out = ((oType **) ao)[0];
+
+
+  // We must produce output.size units of output.
+
+  for (unsigned int i = 0; i < output.size; i++){
+
+    // ensure that on the way in, the error bit is clear
+    // [assertion is not valid, because the randomizer has already scrambled the bits]
+    // assert ((in[i].data[0] & MPEG_TRANSPORT_ERROR_BIT) == 0);
+
+    assert (in[i].pli.regular_seg_p ());
+    out[i].pli = in[i].pli;			// copy pipeline info...
+    rs_encoder.encode (out[i], in[i]);
+  }
+
+  // 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;	
+}