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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/cl_ltp.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/cl_ltp.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/cl_ltp.h b/media/libstagefright/codecs/amrnb/enc/src/cl_ltp.h new file mode 100644 index 0000000..3e9b587 --- /dev/null +++ b/media/libstagefright/codecs/amrnb/enc/src/cl_ltp.h @@ -0,0 +1,163 @@ +/* ------------------------------------------------------------------ + * 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: /audio/gsm_amr/c/include/cl_ltp.h + + Date: 02/05/2002 + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Placed header file in the proper template format. Added + parameter pOverflow for the basic math ops. + + Description: Replaced "int" and/or "char" with OSCL defined types. + + Description: Moved _cplusplus #ifdef after Include section. + + Description: + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This file contains all the constant definitions and prototype definitions + needed by the cl_ltp.c + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; CONTINUE ONLY IF NOT ALREADY DEFINED +----------------------------------------------------------------------------*/ +#ifndef cl_ltp_h +#define cl_ltp_h "$Id $" + + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" +#include "mode.h" +#include "pitch_fr.h" +#include "ton_stab.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 + ----------------------------------------------------------------------------*/ + + /* state variable */ + typedef struct + { + Pitch_frState *pitchSt; + } clLtpState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + Word16 cl_ltp_init(clLtpState **st); + /* initialize one instance of the pre processing state. + Stores pointer to filter status struct in *st. This pointer has to + be passed to cl_ltp in each call. + returns 0 on success + */ + + Word16 cl_ltp_reset(clLtpState *st); + /* reset of pre processing state (i.e. set state memory to zero) + returns 0 on success + */ + void cl_ltp_exit(clLtpState **st); + /* de-initialize pre processing state (i.e. free status struct) + stores NULL in *st + */ + + void cl_ltp( + clLtpState *clSt, /* i/o : State struct */ + tonStabState *tonSt, /* i/o : State struct */ + enum Mode mode, /* i : coder mode */ + Word16 frameOffset, /* i : Offset to subframe */ + Word16 T_op[], /* i : Open loop pitch lags */ + Word16 *h1, /* i : Impulse response vector Q12 */ + Word16 *exc, /* i/o : Excitation vector Q0 */ + Word16 res2[], /* i/o : Long term prediction residual Q0 */ + Word16 xn[], /* i : Target vector for pitch search Q0 */ + Word16 lsp_flag, /* i : LSP resonance flag */ + Word16 xn2[], /* o : Target vector for codebook search Q0 */ + Word16 y1[], /* o : Filtered adaptive excitation Q0 */ + Word16 *T0, /* o : Pitch delay (integer part) */ + Word16 *T0_frac, /* o : Pitch delay (fractional part) */ + Word16 *gain_pit, /* o : Pitch gain Q14 */ + Word16 g_coeff[], /* o : Correlations between xn, y1, & y2 */ + Word16 **anap, /* o : Analysis parameters */ + Word16 *gp_limit, /* o : pitch gain limit */ + Flag *pOverflow /* o : overflow indicator */ + ); + + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* _CL_LTP_H_ */ + |