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Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/enc_lag3.h')
| -rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/enc_lag3.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/enc_lag3.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/enc_lag3.h new file mode 100644 index 0000000..b3dbaa4 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/enc_lag3.h @@ -0,0 +1,116 @@ +/* ------------------------------------------------------------------ + * 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. +****************************************************************************************/ +/* +------------------------------------------------------------------------------ + + + + Filename: enc_lag3.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + File : enc_lag3.h + Purpose : Encoding of fractional pitch lag with 1/3 resolution. + +------------------------------------------------------------------------------ +*/ + +#ifndef _ENC_LAG3_H_ +#define _ENC_LAG3_H_ +#define enc_lag3_h "$Id $" + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" + +/*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; MACROS + ; [Define module specific macros here] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; [Include all pre-processor statements here.] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; EXTERNAL VARIABLES REFERENCES + ; [Declare variables used in this module but defined elsewhere] + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + typedef struct + { + Word16 past_gain; + } agcState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; [List function prototypes here] + ----------------------------------------------------------------------------*/ + Word16 + Enc_lag3( /* o : Return index of encoding */ + Word16 T0, /* i : Pitch delay */ + Word16 T0_frac, /* i : Fractional pitch delay */ + Word16 T0_prev, /* i : Integer pitch delay of last subframe */ + Word16 T0_min, /* i : minimum of search range */ + Word16 T0_max, /* i : maximum of search range */ + Word16 delta_flag, /* i : Flag for 1st (or 3rd) subframe */ + Word16 flag4, /* i : Flag for encoding with 4 bits */ + Flag *pOverflow + ); + + + + +#ifdef __cplusplus +} +#endif + +#endif /* _ENC_LAG3_H_ */ + + |