Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / gengen / gr_packed_to_unpacked_bb.cc

diff --git a/gnuradio-core/src/lib/gengen/gr_packed_to_unpacked_bb.cc b/gnuradio-core/src/lib/gengen/gr_packed_to_unpacked_bb.cc
new file mode 100644 (file)
index 0000000..dced297
--- /dev/null
+++ b/gnuradio-core/src/lib/gengen/gr_packed_to_unpacked_bb.cc
@@ -0,0 +1,137 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 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.
+ */
+
+// WARNING: this file is machine generated.  Edits will be over written
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_packed_to_unpacked_bb.h>
+#include <gr_io_signature.h>
+#include <assert.h>
+#include <gr_log2_const.h>
+
+static const unsigned int BITS_PER_TYPE = sizeof(unsigned char) * 8;
+static const unsigned int LOG2_L_TYPE = gr_log2_const<sizeof(unsigned char) * 8>();
+
+
+gr_packed_to_unpacked_bb_sptr 
+gr_make_packed_to_unpacked_bb (unsigned int bits_per_chunk, gr_endianness_t endianness)
+{
+  return gr_packed_to_unpacked_bb_sptr 
+    (new gr_packed_to_unpacked_bb (bits_per_chunk,endianness));
+}
+
+gr_packed_to_unpacked_bb::gr_packed_to_unpacked_bb (unsigned int bits_per_chunk, 
+                                                   gr_endianness_t endianness)
+  : gr_block ("packed_to_unpacked_bb",
+             gr_make_io_signature (1, -1, sizeof (unsigned char)),
+             gr_make_io_signature (1, -1, sizeof (unsigned char))),
+    d_bits_per_chunk(bits_per_chunk),d_endianness(endianness),d_index(0)
+{
+  assert (bits_per_chunk <= BITS_PER_TYPE);
+  assert (bits_per_chunk > 0);
+
+  set_relative_rate ((1.0 * BITS_PER_TYPE) / bits_per_chunk);
+}
+
+void
+gr_packed_to_unpacked_bb::forecast(int noutput_items, gr_vector_int &ninput_items_required)
+{
+
+  int input_required = (int) ceil((d_index + noutput_items * d_bits_per_chunk) / (1.0 * BITS_PER_TYPE));
+  unsigned ninputs = ninput_items_required.size();
+  for (unsigned int i = 0; i < ninputs; i++) {
+    ninput_items_required[i] = input_required;
+    //printf("Forecast wants %d needs %d\n",noutput_items,ninput_items_required[i]);
+  }
+}
+
+unsigned int
+get_bit_le (const unsigned char *in_vector,unsigned int bit_addr)
+{
+  unsigned char x = in_vector[bit_addr>>LOG2_L_TYPE];
+  return (x>>(bit_addr&(BITS_PER_TYPE-1)))&1;
+}
+
+unsigned int
+get_bit_be (const unsigned char *in_vector,unsigned int bit_addr)
+{
+  unsigned char x = in_vector[bit_addr>>LOG2_L_TYPE];
+  return (x>>((BITS_PER_TYPE-1)-(bit_addr&(BITS_PER_TYPE-1))))&1;
+}
+
+int
+gr_packed_to_unpacked_bb::general_work (int noutput_items,
+                                       gr_vector_int &ninput_items,
+                                       gr_vector_const_void_star &input_items,
+                                       gr_vector_void_star &output_items)
+{
+  unsigned int index_tmp = d_index;
+
+  assert (input_items.size() == output_items.size());
+  int nstreams = input_items.size();
+
+  for (int m=0; m < nstreams; m++){
+    const unsigned char *in = (unsigned char *) input_items[m];
+    unsigned char *out = (unsigned char *) output_items[m];
+    index_tmp = d_index;
+
+    // per stream processing
+
+    switch (d_endianness){
+
+    case GR_MSB_FIRST:
+      for (int i = 0; i < noutput_items; i++){
+       //printf("here msb %d\n",i);
+       unsigned char x = 0;
+       for(unsigned int j=0; j<d_bits_per_chunk; j++, index_tmp++)
+         x = (x<<1) | get_bit_be(in, index_tmp);
+       out[i] = x;
+      }
+      break;
+
+    case GR_LSB_FIRST:
+      for (int i = 0; i < noutput_items; i++){
+       //printf("here lsb %d\n",i);
+       unsigned char x = 0;
+       for(unsigned int j=0; j<d_bits_per_chunk; j++, index_tmp++)
+         x = (x<<1) | get_bit_le(in, index_tmp);
+       out[i] = x;
+      }
+      break;
+
+    default:
+      assert(0);
+    }
+
+    //printf("almost got to end\n");
+    assert(ninput_items[m] >= (int) ((d_index+(BITS_PER_TYPE-1))>>LOG2_L_TYPE));
+  }
+
+  d_index = index_tmp;
+  consume_each (d_index >> LOG2_L_TYPE);
+  d_index = d_index & (BITS_PER_TYPE-1);
+  //printf("got to end\n");
+  return noutput_items;
+}