Add missing buffer allocator hint to gr_ofdm_sampler.cc

This change was needed because gr_ofdm_sampler derives directly from
gr_block, but functions (from the runtime's point of view) as a
decimator.  It takes many items in to produce a single output
item.  Without this change, values of fft_size > ~4096 would result
in the scheduler complaining that it could never fullfil the block's
request for samples.

When deriving from gr_sync_interpolator or gr_sync_decimator, their
constructors set the hint automatically.

diff --git a/gnuradio-core/src/lib/general/gr_ofdm_sampler.cc b/gnuradio-core/src/lib/general/gr_ofdm_sampler.cc
index 74bd65a50a688ddae32b3a761f968205664f0296..7f6b2b01c984a6d5064a9d91fbdb5005146989e7 100644 (file)
--- a/gnuradio-core/src/lib/general/gr_ofdm_sampler.cc
+++ b/gnuradio-core/src/lib/general/gr_ofdm_sampler.cc
@@ -1,6 +1,6 @@
 /* -*- c++ -*- */
 /*
- * Copyright 2007,2008 Free Software Foundation, Inc.
+ * Copyright 2007,2008,2010 Free Software Foundation, Inc.
  * 
  * This file is part of GNU Radio
  * 
@@ -45,6 +45,7 @@ gr_ofdm_sampler::gr_ofdm_sampler (unsigned int fft_length,
              gr_make_io_signature2 (2, 2, sizeof (gr_complex)*fft_length, sizeof(char)*fft_length)),
     d_state(STATE_NO_SIG), d_timeout_max(timeout), d_fft_length(fft_length), d_symbol_length(symbol_length)
 {
+  set_relative_rate(1.0/(double) fft_length);   // buffer allocator hint
 }
 
 void