Ticket #171 (enhancement)

gr_float_to_complex_sptr
gr_make_float_to_complex (int vlen)
{
  return gr_float_to_complex_sptr (new gr_float_to_complex (vlen));
}

gr_float_to_complex::gr_float_to_complex (int vlen)
  : gr_sync_block ("gr_float_to_complex",
                   gr_make_io_signature (1, 2, sizeof (float)*vlen),
                   gr_make_io_signature (1, 1, sizeof (gr_complex)*vlen)),
    d_vlen(vlen)
{
}

int
gr_float_to_complex::work (int noutput_items,
                           gr_vector_const_void_star &input_items,
                           gr_vector_void_star &output_items)
{
  float *r = (float *)input_items[0];
  float *i = (float *)input_items[1];
  gr_complex *out = (gr_complex *) output_items[0];

  switch (input_items.size ()){
  case 1:
    for (int j = 0; j < noutput_items*d_vlen; j++)
      out[j] = gr_complex (r[j], 0);
    break;

  case 2:
    for (int j = 0; j < noutput_items*d_vlen; j++)
      out[j] = gr_complex (r[j], i[j]);
    break;

  default:
    assert (0);
  }

  return noutput_items;
}

gr_float_to_complex_sptr
gr_make_float_to_complex (int vlen);

/*!
 * \brief Convert 1 or 2 streams of float to a stream of gr_complex
 * \ingroup converter
 */

class gr_float_to_complex : public gr_sync_block
{
  friend gr_float_to_complex_sptr gr_make_float_to_complex (int vlen);
  gr_float_to_complex (int vlen);
  
  int d_vlen;

 public:
  virtual int work (int noutput_items,
                    gr_vector_const_void_star &input_items,
                    gr_vector_void_star &output_items);
};

GR_SWIG_BLOCK_MAGIC(gr,float_to_complex)

gr_float_to_complex_sptr gr_make_float_to_complex (int vlen);

class gr_float_to_complex : public gr_sync_block
{
private:
  gr_float_to_complex (int vlen);
};