X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=gnuradio-core%2Fsrc%2Flib%2Ffilter%2Fgri_fir_filter_with_buffer_XXX.cc.t;fp=gnuradio-core%2Fsrc%2Flib%2Ffilter%2Fgri_fir_filter_with_buffer_XXX.cc.t;h=1540688403c555c11cd4cf389dbfe5ff909eeaa7;hb=2924c0e740bbb9106bfed602345daaee5606d62a;hp=0000000000000000000000000000000000000000;hpb=94d315e556805fb75784964499472977664809c4;p=debian%2Fgnuradio

diff --git a/gnuradio-core/src/lib/filter/gri_fir_filter_with_buffer_XXX.cc.t b/gnuradio-core/src/lib/filter/gri_fir_filter_with_buffer_XXX.cc.t
new file mode 100644
index 00000000..15406884
--- /dev/null
+++ b/gnuradio-core/src/lib/filter/gri_fir_filter_with_buffer_XXX.cc.t
@@ -0,0 +1,121 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <@NAME@.h>
+
+@NAME@::@NAME@(const std::vector<@TAP_TYPE@> &taps)
+{
+  d_buffer = NULL;
+  set_taps(taps);
+}
+
+@NAME@::~@NAME@()
+{
+  if(d_buffer != NULL)
+    free(d_buffer);
+}
+
+void
+@NAME@::set_taps (const std::vector<@TAP_TYPE@> &taps)
+{
+  d_taps = gr_reverse(taps);
+  
+  if(d_buffer != NULL) {
+    free(d_buffer);
+    d_buffer = NULL;
+  }
+  
+  // FIXME: memalign this to 16-byte boundaries for SIMD later
+  size_t t = sizeof(@I_TYPE@) * 2 * d_taps.size();
+  d_buffer = (@I_TYPE@*)malloc(t);
+  memset(d_buffer, 0x00, t);
+  d_idx = 0;
+}
+
+@O_TYPE@
+@NAME@::filter (@I_TYPE@ input)
+{
+  unsigned int i;
+
+  d_buffer[d_idx] = input;
+  d_buffer[d_idx+ntaps()] = input;
+
+  // using the later for the case when ntaps=0;
+  // profiling shows this doesn't make a difference
+  //d_idx = (d_idx + 1) % ntaps();
+  d_idx++;
+  if(d_idx >= ntaps())
+    d_idx = 0;
+
+  @ACC_TYPE@ out = 0;
+  for(i = 0; i < ntaps(); i++) {
+    out += @INPUT_CAST@ d_buffer[d_idx + i] * d_taps[i];
+  }
+  return (@O_TYPE@)out;
+}
+
+@O_TYPE@
+@NAME@::filter (const @I_TYPE@ input[], unsigned long dec)
+{
+  unsigned int i;
+
+  for(i = 0; i < dec; i++) {
+    d_buffer[d_idx] = input[i];
+    d_buffer[d_idx+ntaps()] = input[i];
+    d_idx++;
+    if(d_idx >= ntaps())
+      d_idx = 0;
+  }
+
+  @ACC_TYPE@ out = 0;
+  for(i = 0; i < ntaps(); i++) {
+    out += @INPUT_CAST@ d_buffer[d_idx + i] * d_taps[i];
+  }
+  return (@O_TYPE@)out;
+}
+
+void
+@NAME@::filterN (@O_TYPE@ output[],
+		 const @I_TYPE@ input[],
+		 unsigned long n)
+{
+  for(unsigned long i = 0; i < n; i++) {
+    output[i] = filter(input[i]);
+  }
+}
+
+void
+@NAME@::filterNdec (@O_TYPE@ output[],
+		    const @I_TYPE@ input[],
+		    unsigned long n,
+		    unsigned long decimate)
+{
+  unsigned long j = 0;
+  for(unsigned long i = 0; i < n; i++) {
+    output[i] = filter(&input[j], decimate);
+    j += decimate;
+  }
+}