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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 /****************************************************************************************
     19 Portions of this file are derived from the following 3GPP standard:
     20 
     21     3GPP TS 26.073
     22     ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
     23     Available from http://www.3gpp.org
     24 
     25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
     26 Permission to distribute, modify and use this file under the standard license
     27 terms listed above has been obtained from the copyright holder.
     28 ****************************************************************************************/
     29 /*
     30 ********************************************************************************
     31 *
     32 *      GSM AMR-NB speech codec   R98   Version 7.5.0   March 2, 2001
     33 *                                R99   Version 3.2.0
     34 *                                REL-4 Version 4.0.0
     35 *
     36 ********************************************************************************
     37 *
     38 *      File             : q_plsf.c
     39 *      Purpose          : common part (init, exit, reset) of LSF quantization
     40 *                         module (rest in q_plsf_3.c and q_plsf_5.c)
     41 *
     42 ********************************************************************************
     43 */
     44 
     45 /*
     46 ********************************************************************************
     47 *                         MODULE INCLUDE FILE AND VERSION ID
     48 ********************************************************************************
     49 */
     50 
     51 #include <stdlib.h>
     52 
     53 #include "q_plsf.h"
     54 
     55 /*
     56 ********************************************************************************
     57 *                         INCLUDE FILES
     58 ********************************************************************************
     59 */
     60 #include "typedef.h"
     61 #include "basic_op.h"
     62 
     63 
     64 /*
     65 ********************************************************************************
     66 *                         PUBLIC PROGRAM CODE
     67 ********************************************************************************
     68 */
     69 
     70 /*
     71 **************************************************************************
     72 *
     73 *  Function    : Q_plsf_init
     74 *  Purpose     : Allocates memory and initializes state variables
     75 *
     76 **************************************************************************
     77 */
     78 Word16 Q_plsf_init(Q_plsfState **state)
     79 {
     80     Q_plsfState* s;
     81 
     82     if (state == (Q_plsfState **) NULL)
     83     {
     84         /* fprintf(stderr, "Q_plsf_init: invalid parameter\n"); */
     85         return -1;
     86     }
     87     *state = NULL;
     88 
     89     /* allocate memory */
     90     if ((s = (Q_plsfState *) malloc(sizeof(Q_plsfState))) == NULL)
     91     {
     92         /* fprintf(stderr, "Q_plsf_init: can not malloc state structure\n"); */
     93         return -1;
     94     }
     95 
     96     Q_plsf_reset(s);
     97     *state = s;
     98 
     99     return 0;
    100 }
    101 
    102 /*
    103 **************************************************************************
    104 *
    105 *  Function    : Q_plsf_reset
    106 *  Purpose     : Resets state memory
    107 *
    108 **************************************************************************
    109 */
    110 Word16 Q_plsf_reset(Q_plsfState *state)
    111 {
    112     Word16 i;
    113 
    114     if (state == (Q_plsfState *) NULL)
    115     {
    116         /* fprintf(stderr, "Q_plsf_reset: invalid parameter\n"); */
    117         return -1;
    118     }
    119 
    120     for (i = 0; i < M; i++)
    121         state->past_rq[i] = 0;
    122 
    123     return 0;
    124 }
    125 
    126 /*
    127 **************************************************************************
    128 *
    129 *  Function    : Q_plsf_exit
    130 *  Purpose     : The memory used for state memory is freed
    131 *
    132 **************************************************************************
    133 */
    134 void Q_plsf_exit(Q_plsfState **state)
    135 {
    136     if (state == NULL || *state == NULL)
    137         return;
    138 
    139     /* deallocate memory */
    140     free(*state);
    141     *state = NULL;
    142 
    143     return;
    144 }
    145