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      1 /*
      2  ** Copyright 2003-2010, VisualOn, Inc.
      3  **
      4  ** Licensed under the Apache License, Version 2.0 (the "License");
      5  ** you may not use this file except in compliance with the License.
      6  ** You may obtain a copy of the License at
      7  **
      8  **     http://www.apache.org/licenses/LICENSE-2.0
      9  **
     10  ** Unless required by applicable law or agreed to in writing, software
     11  ** distributed under the License is distributed on an "AS IS" BASIS,
     12  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  ** See the License for the specific language governing permissions and
     14  ** limitations under the License.
     15  */
     16 /*******************************************************************************
     17 	File:		tns_func.h
     18 
     19 	Content:	TNS functions
     20 
     21 *******************************************************************************/
     22 
     23 /*
     24    Temporal noise shaping
     25  */
     26 #ifndef _TNS_FUNC_H
     27 #define _TNS_FUNC_H
     28 #include "typedef.h"
     29 #include "psy_configuration.h"
     30 
     31 Word16 InitTnsConfigurationLong(Word32 bitrate,
     32                                 Word32 samplerate,
     33                                 Word16 channels,
     34                                 TNS_CONFIG *tnsConfig,
     35                                 PSY_CONFIGURATION_LONG *psyConfig,
     36                                 Word16 active);
     37 
     38 Word16 InitTnsConfigurationShort(Word32 bitrate,
     39                                  Word32 samplerate,
     40                                  Word16 channels,
     41                                  TNS_CONFIG *tnsConfig,
     42                                  PSY_CONFIGURATION_SHORT *psyConfig,
     43                                  Word16 active);
     44 
     45 Word32 TnsDetect(TNS_DATA* tnsData,
     46                  TNS_CONFIG tC,
     47                  Word32* pScratchTns,
     48                  const Word16 sfbOffset[],
     49                  Word32* spectrum,
     50                  Word16 subBlockNumber,
     51                  Word16 blockType,
     52                  Word32 * sfbEnergy);
     53 
     54 void TnsSync(TNS_DATA *tnsDataDest,
     55              const TNS_DATA *tnsDataSrc,
     56              const TNS_CONFIG tC,
     57              const Word16 subBlockNumber,
     58              const Word16 blockType);
     59 
     60 Word16 TnsEncode(TNS_INFO* tnsInfo,
     61                  TNS_DATA* tnsData,
     62                  Word16 numOfSfb,
     63                  TNS_CONFIG tC,
     64                  Word16 lowPassLine,
     65                  Word32* spectrum,
     66                  Word16 subBlockNumber,
     67                  Word16 blockType);
     68 
     69 void ApplyTnsMultTableToRatios(Word16 startCb,
     70                                Word16 stopCb,
     71                                TNS_SUBBLOCK_INFO subInfo,
     72                                Word32 *thresholds);
     73 
     74 
     75 #endif /* _TNS_FUNC_H */
     76