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Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/include/weight_a.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/common/include/weight_a.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/include/weight_a.h b/media/libstagefright/codecs/amrnb/common/include/weight_a.h new file mode 100644 index 0000000..0358c85 --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/include/weight_a.h @@ -0,0 +1,81 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 1998-2009 PacketVideo + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either + * express or implied. + * See the License for the specific language governing permissions + * and limitations under the License. + * ------------------------------------------------------------------- + */ +/**************************************************************************************** +Portions of this file are derived from the following 3GPP standard: + + 3GPP TS 26.073 + ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec + Available from http://www.3gpp.org + +(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) +Permission to distribute, modify and use this file under the standard license +terms listed above has been obtained from the copyright holder. +****************************************************************************************/ +/* +******************************************************************************** +* +* GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001 +* R99 Version 3.2.0 +* REL-4 Version 4.0.0 +* +******************************************************************************** +* +* File : weight_a.h +* Purpose : Spectral expansion of LP coefficients. (order==10) +* Description : a_exp[i] = a[i] * fac[i-1] ,i=1,10 +* +* +******************************************************************************** +*/ +#ifndef weight_a_h +#define weight_a_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + + /* + ******************************************************************************** + * DEFINITION OF DATA TYPES + ******************************************************************************** + */ + + /* + ******************************************************************************** + * DECLARATION OF PROTOTYPES + ******************************************************************************** + */ + void Weight_Ai( + Word16 a[], /* (i) : a[m+1] LPC coefficients (m=10) */ + const Word16 fac[],/* (i) : Spectral expansion factors. */ + Word16 a_exp[] /* (o) : Spectral expanded LPC coefficients */ + ); + +#ifdef __cplusplus +} +#endif + +#endif |