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      1 /*
      2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 
     13 #include <stdlib.h>
     14 #include <string.h>
     15 #include "g722_interface.h"
     16 #include "g722_enc_dec.h"
     17 #include "typedefs.h"
     18 
     19 
     20 int16_t WebRtcG722_CreateEncoder(G722EncInst **G722enc_inst)
     21 {
     22     *G722enc_inst=(G722EncInst*)malloc(sizeof(g722_encode_state_t));
     23     if (*G722enc_inst!=NULL) {
     24       return(0);
     25     } else {
     26       return(-1);
     27     }
     28 }
     29 
     30 int16_t WebRtcG722_EncoderInit(G722EncInst *G722enc_inst)
     31 {
     32     // Create and/or reset the G.722 encoder
     33     // Bitrate 64 kbps and wideband mode (2)
     34     G722enc_inst = (G722EncInst *) WebRtc_g722_encode_init(
     35         (g722_encode_state_t*) G722enc_inst, 64000, 2);
     36     if (G722enc_inst == NULL) {
     37         return -1;
     38     } else {
     39         return 0;
     40     }
     41 }
     42 
     43 int16_t WebRtcG722_FreeEncoder(G722EncInst *G722enc_inst)
     44 {
     45     // Free encoder memory
     46     return WebRtc_g722_encode_release((g722_encode_state_t*) G722enc_inst);
     47 }
     48 
     49 int16_t WebRtcG722_Encode(G722EncInst *G722enc_inst,
     50                           int16_t *speechIn,
     51                           int16_t len,
     52                           int16_t *encoded)
     53 {
     54     unsigned char *codechar = (unsigned char*) encoded;
     55     // Encode the input speech vector
     56     return WebRtc_g722_encode((g722_encode_state_t*) G722enc_inst,
     57                        codechar, speechIn, len);
     58 }
     59 
     60 int16_t WebRtcG722_CreateDecoder(G722DecInst **G722dec_inst)
     61 {
     62     *G722dec_inst=(G722DecInst*)malloc(sizeof(g722_decode_state_t));
     63     if (*G722dec_inst!=NULL) {
     64       return(0);
     65     } else {
     66       return(-1);
     67     }
     68 }
     69 
     70 int16_t WebRtcG722_DecoderInit(G722DecInst *G722dec_inst)
     71 {
     72     // Create and/or reset the G.722 decoder
     73     // Bitrate 64 kbps and wideband mode (2)
     74     G722dec_inst = (G722DecInst *) WebRtc_g722_decode_init(
     75         (g722_decode_state_t*) G722dec_inst, 64000, 2);
     76     if (G722dec_inst == NULL) {
     77         return -1;
     78     } else {
     79         return 0;
     80     }
     81 }
     82 
     83 int16_t WebRtcG722_FreeDecoder(G722DecInst *G722dec_inst)
     84 {
     85     // Free encoder memory
     86     return WebRtc_g722_decode_release((g722_decode_state_t*) G722dec_inst);
     87 }
     88 
     89 int16_t WebRtcG722_Decode(G722DecInst *G722dec_inst,
     90                           int16_t *encoded,
     91                           int16_t len,
     92                           int16_t *decoded,
     93                           int16_t *speechType)
     94 {
     95     // Decode the G.722 encoder stream
     96     *speechType=G722_WEBRTC_SPEECH;
     97     return WebRtc_g722_decode((g722_decode_state_t*) G722dec_inst,
     98                               decoded, (uint8_t*) encoded, len);
     99 }
    100 
    101 int16_t WebRtcG722_Version(char *versionStr, short len)
    102 {
    103     // Get version string
    104     char version[30] = "2.0.0\n";
    105     if (strlen(version) < (unsigned int)len)
    106     {
    107         strcpy(versionStr, version);
    108         return 0;
    109     }
    110     else
    111     {
    112         return -1;
    113     }
    114 }
    115 
    116