text: #include <pocketsphinx.h>
  #include <stdio.h>
  #include <string.h>
  #include <time.h>
  
  #include "pocketsphinx_internal.h"
  #include "fsg_search_internal.h"
  #include "ps_lattice_internal.h"
  #include "test_macros.h"
  
  int
  main(int argc, char *argv[])
  {
  	ps_decoder_t *ps;
  	cmd_ln_t *config;
  	acmod_t *acmod;
  	fsg_search_t *fsgs;
  	ps_lattice_t *dag;
  	ps_seg_t *seg;
  	int32 score;
  
  	TEST_ASSERT(config =
  		    cmd_ln_init(NULL, ps_args(), TRUE,
  				"-hmm", MODELDIR "/hmm/en_US/hub4wsj_sc_8k",
  				"-fsg", DATADIR "/goforward.fsg",
  				"-dict", MODELDIR "/lm/en/turtle.dic",
  				"-bestpath", "no",
  				"-input_endian", "little",
  				"-samprate", "16000", NULL));
  	TEST_ASSERT(ps = ps_init(config));
  
  	fsgs = (fsg_search_t *)ps->search;
  	acmod = ps->acmod;
  
  	setbuf(stdout, NULL);
  	{
  		FILE *rawfh;
  		int16 buf[2048];
  		size_t nread;
  		int16 const *bptr;
  		char const *hyp;
  		int nfr;
  
  		TEST_ASSERT(rawfh = fopen(DATADIR "/goforward.raw", "rb"));
  		TEST_EQUAL(0, acmod_start_utt(acmod));
  		fsg_search_start(ps_search_base(fsgs));
  		while (!feof(rawfh)) {
  			nread = fread(buf, sizeof(*buf), 2048, rawfh);
  			bptr = buf;
  			while ((nfr = acmod_process_raw(acmod, &bptr, &nread, FALSE)) > 0) {
  				while (acmod->n_feat_frame > 0) {
  					fsg_search_step(ps_search_base(fsgs),
  							acmod->output_frame);
  					acmod_advance(acmod);
  				}
  			}
  		}
  		fsg_search_finish(ps_search_base(fsgs));
  		hyp = fsg_search_hyp(ps_search_base(fsgs), &score);
  		printf("FSG: %s (%d)\n", hyp, score);
  
  		TEST_ASSERT(acmod_end_utt(acmod) >= 0);
  		fclose(rawfh);
  	}
  	TEST_EQUAL(0, strcmp("go forward ten meters",
  			     fsg_search_hyp(ps_search_base(fsgs), &score)));
  	for (seg = ps_seg_iter(ps, &score); seg;
  	     seg = ps_seg_next(seg)) {
  		char const *word;
  		int sf, ef;
  		int32 post, lscr, ascr, lback;
  
  		word = ps_seg_word(seg);
  		ps_seg_frames(seg, &sf, &ef);
  		if (sf == ef)
  			continue;
  		post = ps_seg_prob(seg, &ascr, &lscr, &lback);
  		printf("%s (%d:%d) P(w|o) = %f ascr = %d lscr = %d lback = %d\n", word, sf, ef,
  		       logmath_exp(ps_get_logmath(ps), post), ascr, lscr, lback);
  	}
  
  	/* Now get the DAG and play with it. */
  	dag = ps_get_lattice(ps);
  	ps_lattice_write(dag, "test_fsg.lat");
  	printf("BESTPATH: %s\n",
  	       ps_lattice_hyp(dag, ps_lattice_bestpath(dag, NULL, 1.0, 15.0)));
  	ps_lattice_posterior(dag, NULL, 15.0);
  	ps_free(ps);
  
  	return 0;
  }
  