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Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/dec_amr.h')
| -rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/dec_amr.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/dec_amr.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/dec_amr.h new file mode 100644 index 0000000..3066ff7 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/dec_amr.h @@ -0,0 +1,202 @@ +/* ------------------------------------------------------------------ + * 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: dec_amr.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + File : dec_amr.h + Purpose : Speech decoder routine. + +------------------------------------------------------------------------------ +*/ + +/*---------------------------------------------------------------------------- +; CONTINUE ONLY IF NOT ALREADY DEFINED +----------------------------------------------------------------------------*/ +#ifndef DEC_AMR_H +#define DEC_AMR_H "$Id $" + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" +#include "cnst.h" +#include "mode.h" +#include "dtx_dec.h" +#include "d_plsf.h" +#include "gc_pred.h" +#include "ec_gains.h" +#include "ph_disp.h" +#include "c_g_aver.h" +#include "bgnscd.h" +#include "lsp_avg.h" +#include "frame.h" +#include "get_const_tbls.h" + +/*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; MACROS + ; Define module specific macros here + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; Include all pre-processor statements here. + ----------------------------------------------------------------------------*/ +#define EXC_ENERGY_HIST_LEN 9 +#define LTP_GAIN_HISTORY_LEN 9 + /*---------------------------------------------------------------------------- + ; EXTERNAL VARIABLES REFERENCES + ; Declare variables used in this module but defined elsewhere + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + typedef struct + { + /* Excitation vector */ + Word16 old_exc[L_SUBFR + PIT_MAX + L_INTERPOL]; + Word16 *exc; + + /* Lsp (Line spectral pairs) */ + /* Word16 lsp[M]; */ /* Used by CN codec */ + Word16 lsp_old[M]; + + /* Filter's memory */ + Word16 mem_syn[M]; + + /* pitch sharpening */ + Word16 sharp; + Word16 old_T0; + + /* Memories for bad frame handling */ + Word16 prev_bf; + Word16 prev_pdf; + Word16 state; + Word16 excEnergyHist[EXC_ENERGY_HIST_LEN]; + + /* Variable holding received ltpLag, used in background noise and BFI */ + Word16 T0_lagBuff; + + /* Variables for the source characteristic detector (SCD) */ + Word16 inBackgroundNoise; + Word16 voicedHangover; + Word16 ltpGainHistory[LTP_GAIN_HISTORY_LEN]; + + Bgn_scdState background_state; + Word16 nodataSeed; + + Cb_gain_averageState Cb_gain_averState; + lsp_avgState lsp_avg_st; + + D_plsfState lsfState; + ec_gain_pitchState ec_gain_p_st; + ec_gain_codeState ec_gain_c_st; + gc_predState pred_state; + ph_dispState ph_disp_st; + dtx_decState dtxDecoderState; + Flag overflow; + CommonAmrTbls common_amr_tbls; + } Decoder_amrState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + /* + * Function : Decoder_amr_init + * Purpose : Allocates initializes state memory + * Description : Stores pointer to filter status struct in *st. This + * pointer has to be passed to Decoder_amr in each call. + * Returns : 0 on success + */ + Word16 Decoder_amr_init(Decoder_amrState *st); + + /* + * Function : Decoder_amr_reset + * Purpose : Resets state memory + * Returns : 0 on success + */ + Word16 Decoder_amr_reset(Decoder_amrState *st, enum Mode mode); + + /* + * Function : Decoder_amr_exit + * Purpose : The memory used for state memory is freed + * Description : Stores NULL in *s + * Returns : void + */ + void Decoder_amr_exit(Decoder_amrState **st); + + /* + * Function : Decoder_amr + * Purpose : Speech decoder routine. + * Returns : 0 + */ + void Decoder_amr( + Decoder_amrState *st, /* i/o : State variables */ + enum Mode mode, /* i : AMR mode */ + Word16 parm[], /* i : vector of synthesis parameters + (PRM_SIZE) */ + enum RXFrameType frame_type, /* i : received frame type */ + Word16 synth[], /* o : synthesis speech (L_FRAME) */ + Word16 A_t[] /* o : decoded LP filter in 4 subframes + (AZ_SIZE) */ + ); + + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* DEC_AMR_H_ */ + + + |