1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - Initial contribution

    11 *

    12 * Contributors:

    13 * Ixonos Plc

    14 *

    15 * Description:

    16 *

    17 */

    18 

    19 

    20 /**************************************************************************

    21   tool.h - Interface to AAC core structures.

    22  

    23   Author(s): Juha Ojanpera

    24   Copyright (c) 2000-2004 by Nokia Research Center, Speech and Audio Systems.

    25   *************************************************************************/

    26 

    27 #ifndef    AACTOOL_H_

    28 #define AACTOOL_H_

    29 

    30 /*-- Project Headers. --*/

    31 #include "nok_bits.h"

    32 #include "dec_huf.h"

    33 #include "aacdef.h"

    34 

    35 /*

    36    Purpose:     LTP parameters for MPEG AAC.

    37    Explanation: - */

    38 class CLTP_Info : public CBase

    39 {

    40 

    41 public:

    42 

    43     static CLTP_Info* NewL();

    44     ~CLTP_Info();

    45 

    46     /*-- Max. sfb's used for this channel. --*/

    47     int16 max_sfb;

    48 

    49     /*-- Codebook index. --*/

    50     uint8 cbIdx;

    51 

    52     /*-- Boolean flag to indicate the presence of LTP. --*/

    53     int16 ltp_present;

    54 

    55     /*-- LTP lag. --*/

    56     int16* delay;

    57 

    58     /*-- Prediction status for each sfb. --*/

    59     uint32 sfbflags[2];

    60 

    61 private:

    62 

    63     CLTP_Info();

    64     void ConstructL();

    65 

    66 };

    67 

    68 /*

    69    Purpose:     Structure interface for AAC decoding tools.

    70    Explanation: - */

    71 class CToolInfo : public CBase

    72 {

    73 public:

    74 

    75     static CToolInfo* NewL();

    76     ~CToolInfo();

    77     CLTP_Info *ltp;

    78     int16* quant;

    79  

    80 private:

    81 

    82     void ConstructL();

    83     CToolInfo();

    84 

    85 };

    86 

    87 /*

    88    Purpose:     Structure interface for coupling channel.

    89    Explanation: - */

    90 class CCInfo : public CBase

    91 {

    92 

    93 public:

    94     static CCInfo* NewL();

    95     ~CCInfo();

    96 

    97     CToolInfo* tool;

    98     CWindowInfo* winInfo;

    99 

   100 private:

   101     CCInfo();

   102     void ConstructL();

   103   

   104 };

   105 

   106 /*

   107    Purpose:     Information about the audio channel.

   108    Explanation: - */

   109 class TEleList

   110 {

   111 public:

   112   int16 num_ele;

   113   int16 ele_is_cpe[1 << LEN_TAG];

   114   int16 ele_tag[1 << LEN_TAG];

   115 

   116 };

   117 

   118 /*

   119    Purpose:     Mixing information for downmixing multichannel input

   120                 into two-channel output.

   121    Explanation: - */

   122 class TMIXdown

   123 {

   124 public:

   125   int16 present;

   126   int16 ele_tag;

   127   int16 pseudo_enab;

   128 

   129 };

   130 

   131 

   132 /*

   133    Purpose:     Program configuration element.

   134    Explanation: - */

   135 class TProgConfig

   136 {

   137 public:

   138   int16 tag;

   139   int16 profile;

   140   int16 sample_rate_idx;

   141 

   142   BOOL pce_present;

   143 

   144   TEleList front;

   145   TEleList side;

   146   TEleList back;

   147   TEleList lfe;

   148   TEleList data;

   149   TEleList coupling;

   150 

   151   TMIXdown mono_mix;

   152   TMIXdown stereo_mix;

   153   TMIXdown matrix_mix;

   154 

   155   int16 num_comment_bytes;

   156 

   157 };

   158 

   159 #endif    /*-- AACTOOL_H_ --*/