| /* ------------------------------------------------------------------ |
| * 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 : q_plsf.c |
| * Purpose : common part (init, exit, reset) of LSF quantization |
| * module (rest in q_plsf_3.c and q_plsf_5.c) |
| * |
| ******************************************************************************** |
| */ |
| |
| /* |
| ******************************************************************************** |
| * MODULE INCLUDE FILE AND VERSION ID |
| ******************************************************************************** |
| */ |
| |
| #include <stdlib.h> |
| |
| #include "q_plsf.h" |
| |
| /* |
| ******************************************************************************** |
| * INCLUDE FILES |
| ******************************************************************************** |
| */ |
| #include "typedef.h" |
| #include "basic_op.h" |
| |
| |
| /* |
| ******************************************************************************** |
| * PUBLIC PROGRAM CODE |
| ******************************************************************************** |
| */ |
| |
| /* |
| ************************************************************************** |
| * |
| * Function : Q_plsf_init |
| * Purpose : Allocates memory and initializes state variables |
| * |
| ************************************************************************** |
| */ |
| Word16 Q_plsf_init(Q_plsfState **state) |
| { |
| Q_plsfState* s; |
| |
| if (state == (Q_plsfState **) NULL) |
| { |
| /* fprintf(stderr, "Q_plsf_init: invalid parameter\n"); */ |
| return -1; |
| } |
| *state = NULL; |
| |
| /* allocate memory */ |
| if ((s = (Q_plsfState *) malloc(sizeof(Q_plsfState))) == NULL) |
| { |
| /* fprintf(stderr, "Q_plsf_init: can not malloc state structure\n"); */ |
| return -1; |
| } |
| |
| Q_plsf_reset(s); |
| *state = s; |
| |
| return 0; |
| } |
| |
| /* |
| ************************************************************************** |
| * |
| * Function : Q_plsf_reset |
| * Purpose : Resets state memory |
| * |
| ************************************************************************** |
| */ |
| Word16 Q_plsf_reset(Q_plsfState *state) |
| { |
| Word16 i; |
| |
| if (state == (Q_plsfState *) NULL) |
| { |
| /* fprintf(stderr, "Q_plsf_reset: invalid parameter\n"); */ |
| return -1; |
| } |
| |
| for (i = 0; i < M; i++) |
| state->past_rq[i] = 0; |
| |
| return 0; |
| } |
| |
| /* |
| ************************************************************************** |
| * |
| * Function : Q_plsf_exit |
| * Purpose : The memory used for state memory is freed |
| * |
| ************************************************************************** |
| */ |
| void Q_plsf_exit(Q_plsfState **state) |
| { |
| if (state == NULL || *state == NULL) |
| return; |
| |
| /* deallocate memory */ |
| free(*state); |
| *state = NULL; |
| |
| return; |
| } |