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      1 /*---------------------------------------------------------------------------*
      2  *  srec_eosd.h  *
      3  *                                                                           *
      4  *  Copyright 2007, 2008 Nuance Communciations, Inc.                               *
      5  *                                                                           *
      6  *  Licensed under the Apache License, Version 2.0 (the 'License');          *
      7  *  you may not use this file except in compliance with the License.         *
      8  *                                                                           *
      9  *  You may obtain a copy of the License at                                  *
     10  *      http://www.apache.org/licenses/LICENSE-2.0                           *
     11  *                                                                           *
     12  *  Unless required by applicable law or agreed to in writing, software      *
     13  *  distributed under the License is distributed on an 'AS IS' BASIS,        *
     14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
     15  *  See the License for the specific language governing permissions and      *
     16  *  limitations under the License.                                           *
     17  *                                                                           *
     18  *---------------------------------------------------------------------------*/
     19 
     20 #ifndef __SREC_EOSD_H__
     21 #define __SREC_EOSD_H__
     22 
     23 #include"sizes.h"
     24 /* all values <=0 will continue recognition. >0 stops it */
     25 typedef enum { VALID_SPEECH_NOT_YET_DETECTED = -1, VALID_SPEECH_CONTINUING = 0, SPEECH_ENDED, SPEECH_ENDED_WITH_ERROR, SPEECH_TOO_LONG, SPEECH_MAYBE_ENDED, SPEECH_ENDED_BY_LEVEL_TIMEOUT } EOSrc;
     26 
     27 typedef struct srec_eos_detector_parms_t
     28 {
     29   costdata eos_costdelta;
     30   costdata opt_eos_costdelta;
     31 
     32   frameID endnode_timeout;
     33   frameID optendnode_timeout;
     34   frameID internalnode_timeout;
     35   frameID inspeech_timeout;
     36 }
     37 srec_eos_detector_parms;
     38 
     39 typedef struct srec_eos_detector_state_t
     40 {
     41   frameID endnode_frmcnt;
     42   frameID optendnode_frmcnt;
     43   frameID internalnode_frmcnt;
     44   frameID inspeech_frmcnt;
     45 
     46   nodeID  internalnode_node_index;
     47 }
     48 srec_eos_detector_state;
     49 
     50 void srec_eosd_allocate(srec_eos_detector_parms** eosd_parms,
     51                         int eos_costdelta,
     52                         int opt_eos_costdelta,
     53                         int endnode_timeout,
     54                         int optendnode_timeout,
     55                         int internalnode_timeout,
     56                         int inspeech_timeout);
     57 
     58 void srec_eosd_destroy(srec_eos_detector_parms* eosd_parms);
     59 
     60 void srec_eosd_state_reset(srec_eos_detector_state* eosd_state);
     61 EOSrc srec_check_end_of_speech(srec_eos_detector_parms* eosd_parms, srec* rec);
     62 EOSrc srec_check_end_of_speech_end(srec* rec);
     63 
     64 #endif
     65