Simplify crash

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

src/wmspeed.cc

@@ -215,13 +215,6 @@ SpeedSync::prepare_mags (const SpeedScanParams& scan_params)
   const int sub_frame_size = Params::frame_size / 2;
   const int sub_sync_search_step = Params::sync_search_step / 2;
 
-  vector<float> window = FFTAnalyzer::gen_normalized_window (sub_frame_size);
-
-  FFTProcessor fft_processor (sub_frame_size);
-
-  float *in = fft_processor.in();
-  float *out = fft_processor.out();
-
   /* set mag matrix size */
   int n_sync_rows = 0;
   int n_sync_cols = sync_bits.size();
@@ -229,42 +222,17 @@ SpeedSync::prepare_mags (const SpeedScanParams& scan_params)
     n_sync_rows++;
   sync_matrix.resize (n_sync_rows, n_sync_cols);
 
-  size_t pos = 0;
-  int row = 0;
-  while (pos + sub_frame_size < in_data_sub.n_frames())
+  for (int row = 0; row < n_sync_rows; row++)
     {
-      int col = 0;
-      const std::vector<float>& samples = in_data_sub.samples();
-      vector<float> fft_out_db;
-
-      for (int ch = 0; ch < in_data_sub.n_channels(); ch++)
-        {
-          for (int i = 0; i < sub_frame_size; i++)
-            {
-              in[i] = samples[ch + (pos + i) * in_data_sub.n_channels()] * window[i];
-            }
-          fft_processor.fft();
-
-          for (int i = Params::min_band; i <= Params::max_band; i++)
-            {
-              const float min_db = -96;
-
-              fft_out_db.push_back (db_from_complex (out[i * 2], out[i * 2 + 1], min_db));
-            }
-        }
-      for (const auto& sync_bit : sync_bits)
+      for (int col = 0; col < n_sync_cols; col++)
         {
           float umag = 1, dmag = 1;
 
-          sync_matrix (row, col++) = MagMatrix::Mags {umag, dmag};
+          sync_matrix (row, col) = MagMatrix::Mags {umag, dmag};
           assert (umag != 0);
           assert (dmag != 0);
         }
-      assert (col == n_sync_cols);
-      row++;
-      pos += sub_sync_search_step;
     }
-  assert (row == n_sync_rows);
 }
 
 template<bool B2> void