test_sig_double_complex.c

This a framework to test new ideas in transmission technology. Actual development is a LDPC-coder in

/***************************************************************************
              test_sig_double_complex.c  -  Double-precision complex signals
                            -------------------
    begin                :  2003
    authors              :  selvan
    emails               :  e-mail
 ***************************************************************************/

/***************************************************************************
                                 Changes
                                 -------
 date - name - description
 03/08/x - selvan - begin
 04/03/03 - ineiti - added a small description
 
 **************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

char desc[] =
"Description:\n"
"Well, performance-wise it's really not optimal, but with Pentium IV\n"
"being not even twice as fast with integers compared to double-precision\n"
"signals, we put also double-precision complex signals in the software-\n"
"radio.\n"
"The output should be 100 random double-precision complex numbers\n"
"between (-10,-10) and (10,10).\n\n";

/**
 * This is a module to write a test for some sort of SPC. Usually
 * you just create one or two chains in here, and they will be
 * tested afterwards.
 */

#include "spc.h"
#include "std.h"
#include <complex.h>

#define DBG_LVL 4


struct chain_t *test_chain;

void *start_it( void *arg ) {
  swr_sdb_id rnd, sink;
  complex double range= 10 + 10 * I;

  test_chain = swr_chain_create( NEW_SPC_VAR_OUT( "rnddouble", rnd, 1 ),
                                 NEW_SPC_VAR_IN( "sink", sink, 3 ),
                                 CHAIN_END );

  // Set the range to -10..10 and show the doubles
  swr_sdb_set_config_complex( rnd, "range_complex", range);
  swr_sdb_set_config_int( sink, "size", 100 );
  swr_sdb_set_config_int( sink, "flag_double_complex", 1 );

  swr_sdb_send_msg( rnd, SUBS_MSG_USER, NULL, -1 );

  return 0;
}

swr_spc_id_t spm_id;

struct thread start;
/**
 * This function is called upon "insmod" and is used to register the
 * different parts of the module to the SPM.
 */
int um_module_init(void) {

  PR_CL( desc );
  test_chain = NULL;
  if ( swr_thread_init( &start, start_it, NULL ) < 0 )
    goto first_no_stack;
  return 0;

 first_no_stack:
  PR_DBG( 0, "Couldn't allocate stack\n" );
  return -1;
}

void um_module_exit( void ) {

  swr_thread_free( &start, NULL );
  swr_chain_destroy( test_chain );

}


module_init( um_module_init );
module_exit( um_module_exit );