int CA_SeekStartOfUtterance(CA_Utterance *hUtt)
{
TRY_CA_EXCEPT
int gap = 0;
ASSERT(hUtt);
if (utterance_started(&hUtt->data))
{
if ((gap = getBlockGap(hUtt->data.gen_utt.frame)) > 0)
(void) setRECframePtr(hUtt->data.gen_utt.frame, gap, 1);
if (hUtt->data.gen_utt.frame->holdOffPeriod > 0)
setRECframePtr(hUtt->data.gen_utt.frame, -MIN(hUtt->data.gen_utt.frame->holdOffPeriod, getFrameGap(hUtt->data.gen_utt.frame)), 1);
while (!(rec_frame_voicing_status(hUtt->data.gen_utt.frame) & VOICE_BIT))
{
incRECframePtr(hUtt->data.gen_utt.frame);
if (getFrameGap(hUtt->data.gen_utt.frame) == 0)
break;
}
setRECframePtr(hUtt->data.gen_utt.frame, MIN(hUtt->data.gen_utt.start_windback, getBlockGap(hUtt->data.gen_utt.frame)), 1);
#ifdef SREC_ENGINE_VERBOSE_LOGGING
PLogMessage("L: Frame start rewound to %d (%d, %d)", hUtt->data.gen_utt.frame->pullTime,
hUtt->data.gen_utt.start_windback,
getBlockGap(hUtt->data.gen_utt.frame));
#endif
hUtt->data.gen_utt.last_push = NULL;
return hUtt->data.gen_utt.start_windback;
}
else
return 0;
BEG_CATCH_CA_EXCEPT
END_CATCH_CA_EXCEPT(hUtt)
}
int retreat_utterance_frame(utterance_info *utt)
/*
** To get a frame amount of data
*/
{
ASSERT(utt);
if (getBlockGap(utt->gen_utt.frame) > 0)
{
if (decRECframePtr(utt->gen_utt.frame) != False)
return (0);
return (1);
}
return (0);
}