A bug with jsgf option in pocketsphinx

[Samuel Kitono]

I have found a bug with the jsgf option.... Apparently the bug causes the
whole program to crash when I do not say anything. However if I stay silent
for more than 2 seconds it doesnt crash. Staying less than 2 secs will cause
the engine to crash.
The log of my program is as follows before it crashes

INFO: fsg_search.c(1015): 0 frames, 0 HMMs (0/fr), 0 senones (0/fr), 10 history entries (0/fr)

and this is the log if i stay silent long enough

INFO: fsg_search.c(1015): 223 frames, 7003 HMMs (31/fr), 13577 senones (60/fr), 6317 history entries (28/fr)

so i reckon the number of frames must have something to do with the bug... Any
solution possible currently?

[Samuel Kitono]

On one more note... it seem my program crashes because pocketsphinx seems to
pass me a null pointer from ps_get_hyp_string if it stays silent too long....

[Nickolay V. Shmyrev]

Dear arckit, NULL is a valid result from ps_get_hyp, see the documentation:

/** 
 * Get hypothesis string and path score. 
 * 
 * @param ps Decoder. 
 * @param out_best_score Output: path score corresponding to returned string. 
 * @param out_uttid Output: utterance ID for this utterance. 
 * @return String containing best hypothesis at this point in 
 *         decoding.  NULL if no hypothesis is available. 
 */
POCKETSPHINX_EXPORT
char const *ps_get_hyp(ps_decoder_t *ps, int32 *out_best_score,
                       char const **out_uttid);

It's the issue in your program that it crashes on NULL result. I suppose you
can easily fix this crash.